./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe014_pso.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_c35cc531-b884-4af3-a0e5-b397783ba154/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_c35cc531-b884-4af3-a0e5-b397783ba154/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_c35cc531-b884-4af3-a0e5-b397783ba154/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_c35cc531-b884-4af3-a0e5-b397783ba154/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe014_pso.oepc.i -s /tmp/vcloud-vcloud-master/worker/run_dir_c35cc531-b884-4af3-a0e5-b397783ba154/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_c35cc531-b884-4af3-a0e5-b397783ba154/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 09cc37004f61233243127b1a254be8b536d0c1f6 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 03:07:21,753 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:07:21,756 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:07:21,835 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:07:21,844 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:07:21,852 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:07:21,854 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:07:21,857 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:07:21,859 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:07:21,861 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:07:21,862 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:07:21,864 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:07:21,865 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:07:21,867 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:07:21,868 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:07:21,870 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:07:21,871 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:07:21,873 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:07:21,875 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:07:21,878 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:07:21,881 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:07:21,886 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:07:21,888 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:07:21,889 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:07:21,894 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:07:21,894 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:07:21,895 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:07:21,896 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:07:21,897 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:07:21,898 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:07:21,899 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:07:21,907 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:07:21,910 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:07:21,911 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:07:21,913 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:07:21,913 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:07:21,914 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:07:21,915 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:07:21,915 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:07:21,916 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:07:21,917 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:07:21,921 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_c35cc531-b884-4af3-a0e5-b397783ba154/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-28 03:07:21,967 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:07:21,973 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:07:21,975 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:07:21,975 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:07:21,976 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:07:21,976 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:07:21,976 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 03:07:21,977 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:07:21,977 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 03:07:21,977 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:07:21,978 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 03:07:21,979 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 03:07:21,979 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 03:07:21,979 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 03:07:21,980 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 03:07:21,980 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:07:21,980 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 03:07:21,981 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:07:21,981 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:07:21,981 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 03:07:21,981 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 03:07:21,982 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:07:21,982 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:07:21,982 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 03:07:21,983 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 03:07:21,983 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 03:07:21,983 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 03:07:21,984 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 03:07:21,984 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:07:21,984 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_c35cc531-b884-4af3-a0e5-b397783ba154/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_c35cc531-b884-4af3-a0e5-b397783ba154/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 09cc37004f61233243127b1a254be8b536d0c1f6 [2020-11-28 03:07:22,376 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:07:22,429 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:07:22,433 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:07:22,434 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:07:22,435 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:07:22,437 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_c35cc531-b884-4af3-a0e5-b397783ba154/bin/uautomizer/../../sv-benchmarks/c/pthread-wmm/safe014_pso.oepc.i [2020-11-28 03:07:22,543 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c35cc531-b884-4af3-a0e5-b397783ba154/bin/uautomizer/data/25549bd3b/1a1768df0f85442792e5acb2acc4d62b/FLAGe2734929c [2020-11-28 03:07:23,216 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:07:23,217 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_c35cc531-b884-4af3-a0e5-b397783ba154/sv-benchmarks/c/pthread-wmm/safe014_pso.oepc.i [2020-11-28 03:07:23,247 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c35cc531-b884-4af3-a0e5-b397783ba154/bin/uautomizer/data/25549bd3b/1a1768df0f85442792e5acb2acc4d62b/FLAGe2734929c [2020-11-28 03:07:23,456 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_c35cc531-b884-4af3-a0e5-b397783ba154/bin/uautomizer/data/25549bd3b/1a1768df0f85442792e5acb2acc4d62b [2020-11-28 03:07:23,459 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:07:23,461 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 03:07:23,467 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:07:23,467 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:07:23,471 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:07:23,472 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:07:23" (1/1) ... [2020-11-28 03:07:23,475 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@250b8392 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:07:23, skipping insertion in model container [2020-11-28 03:07:23,475 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:07:23" (1/1) ... [2020-11-28 03:07:23,484 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:07:23,535 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:07:24,073 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:07:24,085 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:07:24,157 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:07:24,253 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:07:24,254 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:07:24 WrapperNode [2020-11-28 03:07:24,255 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:07:24,257 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 03:07:24,257 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 03:07:24,257 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 03:07:24,268 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:07:24" (1/1) ... [2020-11-28 03:07:24,311 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:07:24" (1/1) ... [2020-11-28 03:07:24,339 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 03:07:24,340 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:07:24,340 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:07:24,340 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:07:24,350 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:07:24" (1/1) ... [2020-11-28 03:07:24,350 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:07:24" (1/1) ... [2020-11-28 03:07:24,354 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:07:24" (1/1) ... [2020-11-28 03:07:24,354 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:07:24" (1/1) ... [2020-11-28 03:07:24,363 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:07:24" (1/1) ... [2020-11-28 03:07:24,365 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:07:24" (1/1) ... [2020-11-28 03:07:24,367 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:07:24" (1/1) ... [2020-11-28 03:07:24,371 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:07:24,372 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:07:24,372 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:07:24,373 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:07:24,374 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:07:24" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c35cc531-b884-4af3-a0e5-b397783ba154/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 03:07:24,489 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-28 03:07:24,489 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-28 03:07:24,490 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 03:07:24,491 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 03:07:24,491 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-28 03:07:24,492 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-28 03:07:24,493 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-28 03:07:24,493 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-28 03:07:24,493 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-11-28 03:07:24,494 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-11-28 03:07:24,495 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 03:07:24,495 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-28 03:07:24,495 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:07:24,495 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:07:24,497 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 03:07:25,041 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:07:25,041 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-28 03:07:25,044 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:07:25 BoogieIcfgContainer [2020-11-28 03:07:25,044 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:07:25,046 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 03:07:25,046 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 03:07:25,049 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 03:07:25,050 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:07:23" (1/3) ... [2020-11-28 03:07:25,050 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dbe950e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:07:25, skipping insertion in model container [2020-11-28 03:07:25,051 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:07:24" (2/3) ... [2020-11-28 03:07:25,051 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dbe950e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:07:25, skipping insertion in model container [2020-11-28 03:07:25,051 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:07:25" (3/3) ... [2020-11-28 03:07:25,052 INFO L111 eAbstractionObserver]: Analyzing ICFG safe014_pso.oepc.i [2020-11-28 03:07:25,063 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-28 03:07:25,073 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 03:07:25,079 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 03:07:25,080 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-28 03:07:25,125 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:07:25,126 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:07:25,126 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:07:25,126 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:07:25,127 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:07:25,127 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:07:25,127 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:07:25,128 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:07:25,128 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:07:25,128 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:07:25,128 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:07:25,129 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:07:25,129 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:07:25,130 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:07:25,130 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:07:25,130 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:07:25,131 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:07:25,131 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:07:25,133 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:07:25,134 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:07:25,134 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:07:25,134 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:07:25,148 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:07:25,149 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:07:25,149 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:07:25,149 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:07:25,162 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:07:25,162 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:07:25,163 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:07:25,163 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:07:25,169 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-28 03:07:25,183 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-28 03:07:25,223 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 03:07:25,228 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 03:07:25,228 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 03:07:25,229 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:07:25,229 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:07:25,229 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 03:07:25,229 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:07:25,230 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 03:07:25,249 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-11-28 03:07:25,251 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 86 places, 79 transitions, 173 flow [2020-11-28 03:07:25,254 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 86 places, 79 transitions, 173 flow [2020-11-28 03:07:25,256 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 86 places, 79 transitions, 173 flow [2020-11-28 03:07:25,307 INFO L129 PetriNetUnfolder]: 3/76 cut-off events. [2020-11-28 03:07:25,307 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-11-28 03:07:25,312 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 03:07:25,316 INFO L116 LiptonReduction]: Number of co-enabled transitions 1440 [2020-11-28 03:07:27,466 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 43 [2020-11-28 03:07:28,116 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2020-11-28 03:07:28,238 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-11-28 03:07:28,254 INFO L131 LiptonReduction]: Checked pairs total: 2779 [2020-11-28 03:07:28,254 INFO L133 LiptonReduction]: Total number of compositions: 70 [2020-11-28 03:07:28,260 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-11-28 03:07:28,293 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-11-28 03:07:28,296 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-11-28 03:07:28,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-28 03:07:28,303 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:07:28,304 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:07:28,305 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:07:28,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:07:28,318 INFO L82 PathProgramCache]: Analyzing trace with hash -460323677, now seen corresponding path program 1 times [2020-11-28 03:07:28,335 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:07:28,335 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255144080] [2020-11-28 03:07:28,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:07:28,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:07:28,606 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 03:07:28,607 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255144080] [2020-11-28 03:07:28,608 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:07:28,608 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 03:07:28,608 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029100514] [2020-11-28 03:07:28,617 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 03:07:28,617 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:07:28,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 03:07:28,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 03:07:28,639 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-11-28 03:07:28,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:07:28,694 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-11-28 03:07:28,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 03:07:28,695 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-11-28 03:07:28,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:07:28,727 INFO L225 Difference]: With dead ends: 362 [2020-11-28 03:07:28,727 INFO L226 Difference]: Without dead ends: 298 [2020-11-28 03:07:28,728 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 [2020-11-28 03:07:28,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-11-28 03:07:28,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-11-28 03:07:28,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-11-28 03:07:28,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-11-28 03:07:28,853 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-11-28 03:07:28,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:07:28,854 INFO L481 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-11-28 03:07:28,854 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 03:07:28,855 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-11-28 03:07:28,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-28 03:07:28,860 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:07:28,860 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:07:28,861 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 03:07:28,861 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:07:28,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:07:28,861 INFO L82 PathProgramCache]: Analyzing trace with hash -1385173359, now seen corresponding path program 1 times [2020-11-28 03:07:28,862 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:07:28,862 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542978415] [2020-11-28 03:07:28,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:07:28,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:07:29,082 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 03:07:29,083 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542978415] [2020-11-28 03:07:29,083 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:07:29,083 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:07:29,083 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278181868] [2020-11-28 03:07:29,084 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:07:29,085 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:07:29,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:07:29,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:07:29,086 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 5 states. [2020-11-28 03:07:29,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:07:29,185 INFO L93 Difference]: Finished difference Result 330 states and 912 transitions. [2020-11-28 03:07:29,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 03:07:29,187 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-11-28 03:07:29,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:07:29,192 INFO L225 Difference]: With dead ends: 330 [2020-11-28 03:07:29,192 INFO L226 Difference]: Without dead ends: 266 [2020-11-28 03:07:29,193 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-11-28 03:07:29,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-11-28 03:07:29,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2020-11-28 03:07:29,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-11-28 03:07:29,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 752 transitions. [2020-11-28 03:07:29,219 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 752 transitions. Word has length 9 [2020-11-28 03:07:29,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:07:29,219 INFO L481 AbstractCegarLoop]: Abstraction has 266 states and 752 transitions. [2020-11-28 03:07:29,219 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:07:29,220 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 752 transitions. [2020-11-28 03:07:29,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-28 03:07:29,227 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:07:29,227 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:07:29,227 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 03:07:29,228 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:07:29,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:07:29,228 INFO L82 PathProgramCache]: Analyzing trace with hash 585999155, now seen corresponding path program 1 times [2020-11-28 03:07:29,228 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:07:29,229 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652280784] [2020-11-28 03:07:29,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:07:29,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:07:29,337 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 03:07:29,337 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652280784] [2020-11-28 03:07:29,337 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:07:29,338 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:07:29,338 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27300228] [2020-11-28 03:07:29,338 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 03:07:29,338 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:07:29,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 03:07:29,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:07:29,340 INFO L87 Difference]: Start difference. First operand 266 states and 752 transitions. Second operand 6 states. [2020-11-28 03:07:29,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:07:29,517 INFO L93 Difference]: Finished difference Result 344 states and 924 transitions. [2020-11-28 03:07:29,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-28 03:07:29,520 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-11-28 03:07:29,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:07:29,522 INFO L225 Difference]: With dead ends: 344 [2020-11-28 03:07:29,522 INFO L226 Difference]: Without dead ends: 170 [2020-11-28 03:07:29,523 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-11-28 03:07:29,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-11-28 03:07:29,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2020-11-28 03:07:29,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2020-11-28 03:07:29,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 428 transitions. [2020-11-28 03:07:29,534 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 428 transitions. Word has length 10 [2020-11-28 03:07:29,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:07:29,534 INFO L481 AbstractCegarLoop]: Abstraction has 170 states and 428 transitions. [2020-11-28 03:07:29,535 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 03:07:29,535 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 428 transitions. [2020-11-28 03:07:29,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-28 03:07:29,543 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:07:29,543 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:07:29,543 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 03:07:29,543 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:07:29,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:07:29,545 INFO L82 PathProgramCache]: Analyzing trace with hash 229025079, now seen corresponding path program 1 times [2020-11-28 03:07:29,546 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:07:29,546 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106150637] [2020-11-28 03:07:29,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:07:29,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:07:29,657 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 03:07:29,658 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106150637] [2020-11-28 03:07:29,658 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:07:29,658 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 03:07:29,658 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262532118] [2020-11-28 03:07:29,659 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:07:29,659 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:07:29,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:07:29,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:07:29,660 INFO L87 Difference]: Start difference. First operand 170 states and 428 transitions. Second operand 4 states. [2020-11-28 03:07:29,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:07:29,704 INFO L93 Difference]: Finished difference Result 182 states and 442 transitions. [2020-11-28 03:07:29,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:07:29,705 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-11-28 03:07:29,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:07:29,707 INFO L225 Difference]: With dead ends: 182 [2020-11-28 03:07:29,707 INFO L226 Difference]: Without dead ends: 158 [2020-11-28 03:07:29,707 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 03:07:29,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-11-28 03:07:29,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2020-11-28 03:07:29,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-11-28 03:07:29,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 390 transitions. [2020-11-28 03:07:29,715 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 390 transitions. Word has length 12 [2020-11-28 03:07:29,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:07:29,715 INFO L481 AbstractCegarLoop]: Abstraction has 158 states and 390 transitions. [2020-11-28 03:07:29,715 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:07:29,715 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 390 transitions. [2020-11-28 03:07:29,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-28 03:07:29,716 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:07:29,716 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:07:29,716 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-28 03:07:29,717 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:07:29,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:07:29,717 INFO L82 PathProgramCache]: Analyzing trace with hash 1697755731, now seen corresponding path program 1 times [2020-11-28 03:07:29,717 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:07:29,718 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272210125] [2020-11-28 03:07:29,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:07:29,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:07:29,865 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 03:07:29,866 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272210125] [2020-11-28 03:07:29,866 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:07:29,866 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 03:07:29,866 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989701946] [2020-11-28 03:07:29,867 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-28 03:07:29,867 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:07:29,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-28 03:07:29,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-11-28 03:07:29,868 INFO L87 Difference]: Start difference. First operand 158 states and 390 transitions. Second operand 7 states. [2020-11-28 03:07:30,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:07:30,014 INFO L93 Difference]: Finished difference Result 172 states and 412 transitions. [2020-11-28 03:07:30,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-28 03:07:30,016 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2020-11-28 03:07:30,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:07:30,018 INFO L225 Difference]: With dead ends: 172 [2020-11-28 03:07:30,018 INFO L226 Difference]: Without dead ends: 130 [2020-11-28 03:07:30,018 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2020-11-28 03:07:30,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-11-28 03:07:30,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 128. [2020-11-28 03:07:30,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-11-28 03:07:30,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 316 transitions. [2020-11-28 03:07:30,030 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 316 transitions. Word has length 13 [2020-11-28 03:07:30,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:07:30,030 INFO L481 AbstractCegarLoop]: Abstraction has 128 states and 316 transitions. [2020-11-28 03:07:30,030 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-28 03:07:30,030 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 316 transitions. [2020-11-28 03:07:30,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-28 03:07:30,031 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:07:30,031 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:07:30,031 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-28 03:07:30,032 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:07:30,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:07:30,032 INFO L82 PathProgramCache]: Analyzing trace with hash 1286592520, now seen corresponding path program 1 times [2020-11-28 03:07:30,032 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:07:30,033 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739489090] [2020-11-28 03:07:30,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:07:30,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:07:30,118 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 03:07:30,119 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739489090] [2020-11-28 03:07:30,119 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:07:30,119 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:07:30,119 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236339017] [2020-11-28 03:07:30,120 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:07:30,120 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:07:30,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:07:30,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:07:30,121 INFO L87 Difference]: Start difference. First operand 128 states and 316 transitions. Second operand 4 states. [2020-11-28 03:07:30,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:07:30,163 INFO L93 Difference]: Finished difference Result 134 states and 317 transitions. [2020-11-28 03:07:30,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:07:30,164 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-11-28 03:07:30,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:07:30,166 INFO L225 Difference]: With dead ends: 134 [2020-11-28 03:07:30,166 INFO L226 Difference]: Without dead ends: 116 [2020-11-28 03:07:30,166 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:07:30,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-11-28 03:07:30,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2020-11-28 03:07:30,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-11-28 03:07:30,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 278 transitions. [2020-11-28 03:07:30,172 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 278 transitions. Word has length 13 [2020-11-28 03:07:30,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:07:30,172 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 278 transitions. [2020-11-28 03:07:30,172 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:07:30,172 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 278 transitions. [2020-11-28 03:07:30,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-28 03:07:30,173 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:07:30,174 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:07:30,174 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-28 03:07:30,174 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:07:30,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:07:30,175 INFO L82 PathProgramCache]: Analyzing trace with hash -1405608924, now seen corresponding path program 1 times [2020-11-28 03:07:30,175 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:07:30,175 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912176209] [2020-11-28 03:07:30,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:07:30,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:07:30,259 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 03:07:30,259 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912176209] [2020-11-28 03:07:30,260 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:07:30,260 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:07:30,260 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036280466] [2020-11-28 03:07:30,260 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:07:30,261 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:07:30,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:07:30,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:07:30,262 INFO L87 Difference]: Start difference. First operand 116 states and 278 transitions. Second operand 4 states. [2020-11-28 03:07:30,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:07:30,297 INFO L93 Difference]: Finished difference Result 137 states and 301 transitions. [2020-11-28 03:07:30,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 03:07:30,298 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-11-28 03:07:30,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:07:30,299 INFO L225 Difference]: With dead ends: 137 [2020-11-28 03:07:30,300 INFO L226 Difference]: Without dead ends: 97 [2020-11-28 03:07:30,300 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:07:30,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-11-28 03:07:30,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2020-11-28 03:07:30,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-11-28 03:07:30,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 208 transitions. [2020-11-28 03:07:30,305 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 208 transitions. Word has length 14 [2020-11-28 03:07:30,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:07:30,305 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 208 transitions. [2020-11-28 03:07:30,305 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:07:30,305 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 208 transitions. [2020-11-28 03:07:30,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-28 03:07:30,306 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:07:30,306 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:07:30,306 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-28 03:07:30,306 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:07:30,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:07:30,307 INFO L82 PathProgramCache]: Analyzing trace with hash -27259733, now seen corresponding path program 1 times [2020-11-28 03:07:30,307 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:07:30,307 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530503684] [2020-11-28 03:07:30,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:07:30,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:07:30,420 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 03:07:30,420 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530503684] [2020-11-28 03:07:30,421 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:07:30,421 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:07:30,421 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217448712] [2020-11-28 03:07:30,421 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:07:30,422 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:07:30,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:07:30,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:07:30,423 INFO L87 Difference]: Start difference. First operand 97 states and 208 transitions. Second operand 5 states. [2020-11-28 03:07:30,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:07:30,487 INFO L93 Difference]: Finished difference Result 95 states and 185 transitions. [2020-11-28 03:07:30,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:07:30,489 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-11-28 03:07:30,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:07:30,490 INFO L225 Difference]: With dead ends: 95 [2020-11-28 03:07:30,490 INFO L226 Difference]: Without dead ends: 70 [2020-11-28 03:07:30,490 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-11-28 03:07:30,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-11-28 03:07:30,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2020-11-28 03:07:30,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-11-28 03:07:30,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 129 transitions. [2020-11-28 03:07:30,495 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 129 transitions. Word has length 15 [2020-11-28 03:07:30,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:07:30,495 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 129 transitions. [2020-11-28 03:07:30,495 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:07:30,495 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 129 transitions. [2020-11-28 03:07:30,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-28 03:07:30,496 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:07:30,499 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:07:30,500 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-28 03:07:30,500 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:07:30,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:07:30,500 INFO L82 PathProgramCache]: Analyzing trace with hash -1628487690, now seen corresponding path program 1 times [2020-11-28 03:07:30,501 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:07:30,501 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926290185] [2020-11-28 03:07:30,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:07:30,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:07:30,600 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 03:07:30,600 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926290185] [2020-11-28 03:07:30,601 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:07:30,601 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 03:07:30,601 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435585524] [2020-11-28 03:07:30,602 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 03:07:30,602 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:07:30,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 03:07:30,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:07:30,603 INFO L87 Difference]: Start difference. First operand 70 states and 129 transitions. Second operand 6 states. [2020-11-28 03:07:30,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:07:30,691 INFO L93 Difference]: Finished difference Result 63 states and 113 transitions. [2020-11-28 03:07:30,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 03:07:30,692 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-11-28 03:07:30,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:07:30,692 INFO L225 Difference]: With dead ends: 63 [2020-11-28 03:07:30,693 INFO L226 Difference]: Without dead ends: 55 [2020-11-28 03:07:30,693 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-11-28 03:07:30,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-11-28 03:07:30,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-11-28 03:07:30,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-11-28 03:07:30,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 99 transitions. [2020-11-28 03:07:30,695 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 99 transitions. Word has length 16 [2020-11-28 03:07:30,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:07:30,695 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 99 transitions. [2020-11-28 03:07:30,695 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 03:07:30,695 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 99 transitions. [2020-11-28 03:07:30,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-28 03:07:30,696 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:07:30,696 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:07:30,696 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-28 03:07:30,696 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:07:30,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:07:30,696 INFO L82 PathProgramCache]: Analyzing trace with hash -1397206146, now seen corresponding path program 1 times [2020-11-28 03:07:30,697 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:07:30,697 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025833713] [2020-11-28 03:07:30,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:07:30,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:07:30,787 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 03:07:30,787 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025833713] [2020-11-28 03:07:30,787 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:07:30,787 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:07:30,788 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493381412] [2020-11-28 03:07:30,788 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:07:30,788 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:07:30,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:07:30,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:07:30,789 INFO L87 Difference]: Start difference. First operand 55 states and 99 transitions. Second operand 5 states. [2020-11-28 03:07:30,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:07:30,847 INFO L93 Difference]: Finished difference Result 65 states and 113 transitions. [2020-11-28 03:07:30,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:07:30,848 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-11-28 03:07:30,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:07:30,849 INFO L225 Difference]: With dead ends: 65 [2020-11-28 03:07:30,849 INFO L226 Difference]: Without dead ends: 39 [2020-11-28 03:07:30,849 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-28 03:07:30,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-11-28 03:07:30,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-11-28 03:07:30,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-11-28 03:07:30,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 63 transitions. [2020-11-28 03:07:30,851 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 63 transitions. Word has length 18 [2020-11-28 03:07:30,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:07:30,852 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 63 transitions. [2020-11-28 03:07:30,852 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:07:30,852 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 63 transitions. [2020-11-28 03:07:30,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-28 03:07:30,852 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:07:30,853 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:07:30,853 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-28 03:07:30,853 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:07:30,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:07:30,853 INFO L82 PathProgramCache]: Analyzing trace with hash 1171950116, now seen corresponding path program 2 times [2020-11-28 03:07:30,854 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:07:30,854 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414322830] [2020-11-28 03:07:30,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:07:30,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:07:30,929 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 03:07:30,930 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414322830] [2020-11-28 03:07:30,930 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:07:30,930 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:07:30,930 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269541596] [2020-11-28 03:07:30,932 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:07:30,932 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:07:30,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:07:30,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:07:30,933 INFO L87 Difference]: Start difference. First operand 39 states and 63 transitions. Second operand 5 states. [2020-11-28 03:07:30,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:07:30,981 INFO L93 Difference]: Finished difference Result 53 states and 85 transitions. [2020-11-28 03:07:30,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 03:07:30,982 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-11-28 03:07:30,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:07:30,983 INFO L225 Difference]: With dead ends: 53 [2020-11-28 03:07:30,983 INFO L226 Difference]: Without dead ends: 31 [2020-11-28 03:07:30,983 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-28 03:07:30,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-11-28 03:07:30,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-11-28 03:07:30,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-11-28 03:07:30,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 45 transitions. [2020-11-28 03:07:30,985 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 45 transitions. Word has length 18 [2020-11-28 03:07:30,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:07:30,985 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 45 transitions. [2020-11-28 03:07:30,986 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:07:30,986 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 45 transitions. [2020-11-28 03:07:30,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-28 03:07:30,986 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:07:30,986 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:07:30,986 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-28 03:07:30,987 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:07:30,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:07:30,987 INFO L82 PathProgramCache]: Analyzing trace with hash 1333208262, now seen corresponding path program 3 times [2020-11-28 03:07:30,987 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:07:30,988 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091105224] [2020-11-28 03:07:30,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:07:31,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:07:31,057 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 03:07:31,058 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091105224] [2020-11-28 03:07:31,058 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:07:31,058 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:07:31,058 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805193068] [2020-11-28 03:07:31,059 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:07:31,059 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:07:31,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:07:31,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:07:31,060 INFO L87 Difference]: Start difference. First operand 31 states and 45 transitions. Second operand 5 states. [2020-11-28 03:07:31,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:07:31,096 INFO L93 Difference]: Finished difference Result 30 states and 44 transitions. [2020-11-28 03:07:31,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:07:31,097 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-11-28 03:07:31,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:07:31,097 INFO L225 Difference]: With dead ends: 30 [2020-11-28 03:07:31,097 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 03:07:31,097 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-28 03:07:31,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 03:07:31,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 03:07:31,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 03:07:31,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 03:07:31,098 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-11-28 03:07:31,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:07:31,098 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 03:07:31,099 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:07:31,099 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 03:07:31,099 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 03:07:31,099 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-11-28 03:07:31,103 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:07:31 BasicIcfg [2020-11-28 03:07:31,103 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 03:07:31,104 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:07:31,104 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:07:31,104 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:07:31,105 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:07:25" (3/4) ... [2020-11-28 03:07:31,110 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 03:07:31,118 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-11-28 03:07:31,118 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-11-28 03:07:31,118 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-11-28 03:07:31,126 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-11-28 03:07:31,126 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-28 03:07:31,126 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 03:07:31,126 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 03:07:31,206 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_c35cc531-b884-4af3-a0e5-b397783ba154/bin/uautomizer/witness.graphml [2020-11-28 03:07:31,206 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:07:31,208 INFO L168 Benchmark]: Toolchain (without parser) took 7746.24 ms. Allocated memory was 111.1 MB in the beginning and 138.4 MB in the end (delta: 27.3 MB). Free memory was 74.2 MB in the beginning and 38.2 MB in the end (delta: 36.0 MB). Peak memory consumption was 62.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:07:31,208 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 111.1 MB. Free memory was 83.7 MB in the beginning and 83.7 MB in the end (delta: 31.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:07:31,209 INFO L168 Benchmark]: CACSL2BoogieTranslator took 788.12 ms. Allocated memory is still 111.1 MB. Free memory was 74.1 MB in the beginning and 66.2 MB in the end (delta: 7.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-28 03:07:31,210 INFO L168 Benchmark]: Boogie Procedure Inliner took 82.49 ms. Allocated memory is still 111.1 MB. Free memory was 66.2 MB in the beginning and 64.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:07:31,210 INFO L168 Benchmark]: Boogie Preprocessor took 31.27 ms. Allocated memory is still 111.1 MB. Free memory was 64.1 MB in the beginning and 62.8 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:07:31,211 INFO L168 Benchmark]: RCFGBuilder took 672.03 ms. Allocated memory is still 111.1 MB. Free memory was 62.8 MB in the beginning and 41.1 MB in the end (delta: 21.7 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:07:31,214 INFO L168 Benchmark]: TraceAbstraction took 6057.54 ms. Allocated memory was 111.1 MB in the beginning and 138.4 MB in the end (delta: 27.3 MB). Free memory was 40.6 MB in the beginning and 41.3 MB in the end (delta: -681.6 kB). Peak memory consumption was 28.5 MB. Max. memory is 16.1 GB. [2020-11-28 03:07:31,214 INFO L168 Benchmark]: Witness Printer took 102.34 ms. Allocated memory is still 138.4 MB. Free memory was 41.3 MB in the beginning and 38.2 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:07:31,219 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 111.1 MB. Free memory was 83.7 MB in the beginning and 83.7 MB in the end (delta: 31.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 788.12 ms. Allocated memory is still 111.1 MB. Free memory was 74.1 MB in the beginning and 66.2 MB in the end (delta: 7.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 82.49 ms. Allocated memory is still 111.1 MB. Free memory was 66.2 MB in the beginning and 64.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 31.27 ms. Allocated memory is still 111.1 MB. Free memory was 64.1 MB in the beginning and 62.8 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 672.03 ms. Allocated memory is still 111.1 MB. Free memory was 62.8 MB in the beginning and 41.1 MB in the end (delta: 21.7 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6057.54 ms. Allocated memory was 111.1 MB in the beginning and 138.4 MB in the end (delta: 27.3 MB). Free memory was 40.6 MB in the beginning and 41.3 MB in the end (delta: -681.6 kB). Peak memory consumption was 28.5 MB. Max. memory is 16.1 GB. * Witness Printer took 102.34 ms. Allocated memory is still 138.4 MB. Free memory was 41.3 MB in the beginning and 38.2 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 962 VarBasedMoverChecksPositive, 32 VarBasedMoverChecksNegative, 6 SemBasedMoverChecksPositive, 26 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 66 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.0s, 86 PlacesBefore, 32 PlacesAfterwards, 79 TransitionsBefore, 23 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 5 FixpointIterations, 18 TrivialSequentialCompositions, 41 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 2 ChoiceCompositions, 70 TotalNumberOfCompositions, 2779 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: 5.8s, OverallIterations: 12, TraceHistogramMax: 1, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.0s, HoareTripleCheckerStatistics: 228 SDtfs, 325 SDslu, 408 SDs, 0 SdLazy, 222 SolverSat, 64 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 67 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred 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, 12 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 164 NumberOfCodeBlocks, 164 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 152 ConstructedInterpolants, 0 QuantifiedInterpolants, 6560 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 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...