./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe016_pso.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 69874e26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_ff793442-bc1f-4238-94f0-14924bb93a33/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_ff793442-bc1f-4238-94f0-14924bb93a33/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_ff793442-bc1f-4238-94f0-14924bb93a33/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_ff793442-bc1f-4238-94f0-14924bb93a33/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe016_pso.oepc.i -s /tmp/vcloud-vcloud-master/worker/run_dir_ff793442-bc1f-4238-94f0-14924bb93a33/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_ff793442-bc1f-4238-94f0-14924bb93a33/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 d652d9f3fdf88a4a943ccd902b0488ac0eab24b5 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-69874e2 [2020-12-01 15:34:01,324 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-01 15:34:01,328 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-01 15:34:01,428 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-01 15:34:01,429 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-01 15:34:01,433 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-01 15:34:01,435 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-01 15:34:01,438 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-01 15:34:01,441 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-01 15:34:01,442 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-01 15:34:01,444 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-01 15:34:01,450 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-01 15:34:01,450 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-01 15:34:01,461 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-01 15:34:01,464 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-01 15:34:01,467 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-01 15:34:01,469 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-01 15:34:01,477 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-01 15:34:01,481 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-01 15:34:01,488 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-01 15:34:01,494 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-01 15:34:01,496 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-01 15:34:01,499 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-01 15:34:01,501 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-01 15:34:01,510 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-01 15:34:01,510 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-01 15:34:01,511 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-01 15:34:01,514 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-01 15:34:01,515 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-01 15:34:01,517 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-01 15:34:01,517 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-01 15:34:01,519 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-01 15:34:01,522 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-01 15:34:01,524 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-01 15:34:01,525 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-01 15:34:01,526 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-01 15:34:01,527 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-01 15:34:01,528 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-01 15:34:01,528 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-01 15:34:01,529 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-01 15:34:01,530 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-01 15:34:01,537 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_ff793442-bc1f-4238-94f0-14924bb93a33/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-12-01 15:34:01,591 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-01 15:34:01,592 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-01 15:34:01,595 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-01 15:34:01,596 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-01 15:34:01,596 INFO L138 SettingsManager]: * Use SBE=true [2020-12-01 15:34:01,596 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-01 15:34:01,597 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-01 15:34:01,597 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-01 15:34:01,597 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-01 15:34:01,598 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-01 15:34:01,599 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-01 15:34:01,599 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-01 15:34:01,600 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-01 15:34:01,600 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-01 15:34:01,600 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-01 15:34:01,601 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-01 15:34:01,601 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-01 15:34:01,601 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-01 15:34:01,602 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-01 15:34:01,602 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-01 15:34:01,602 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-01 15:34:01,603 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-01 15:34:01,603 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-01 15:34:01,603 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-01 15:34:01,604 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-01 15:34:01,604 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-01 15:34:01,604 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-01 15:34:01,605 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-01 15:34:01,605 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-01 15:34:01,605 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_ff793442-bc1f-4238-94f0-14924bb93a33/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_ff793442-bc1f-4238-94f0-14924bb93a33/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d652d9f3fdf88a4a943ccd902b0488ac0eab24b5 [2020-12-01 15:34:01,986 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-01 15:34:02,029 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-01 15:34:02,035 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-01 15:34:02,037 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-01 15:34:02,038 INFO L275 PluginConnector]: CDTParser initialized [2020-12-01 15:34:02,040 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_ff793442-bc1f-4238-94f0-14924bb93a33/bin/uautomizer/../../sv-benchmarks/c/pthread-wmm/safe016_pso.oepc.i [2020-12-01 15:34:02,153 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ff793442-bc1f-4238-94f0-14924bb93a33/bin/uautomizer/data/b1494698a/292cc19346704b8d90a2b0b99b5e8281/FLAG5a3fc57a0 [2020-12-01 15:34:03,068 INFO L306 CDTParser]: Found 1 translation units. [2020-12-01 15:34:03,068 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_ff793442-bc1f-4238-94f0-14924bb93a33/sv-benchmarks/c/pthread-wmm/safe016_pso.oepc.i [2020-12-01 15:34:03,087 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ff793442-bc1f-4238-94f0-14924bb93a33/bin/uautomizer/data/b1494698a/292cc19346704b8d90a2b0b99b5e8281/FLAG5a3fc57a0 [2020-12-01 15:34:03,254 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_ff793442-bc1f-4238-94f0-14924bb93a33/bin/uautomizer/data/b1494698a/292cc19346704b8d90a2b0b99b5e8281 [2020-12-01 15:34:03,258 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-01 15:34:03,266 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-01 15:34:03,272 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-01 15:34:03,273 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-01 15:34:03,277 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-01 15:34:03,281 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 03:34:03" (1/1) ... [2020-12-01 15:34:03,284 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15c86b3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:34:03, skipping insertion in model container [2020-12-01 15:34:03,284 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 03:34:03" (1/1) ... [2020-12-01 15:34:03,295 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-01 15:34:03,375 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-01 15:34:04,043 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 15:34:04,058 INFO L203 MainTranslator]: Completed pre-run [2020-12-01 15:34:04,161 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 15:34:04,290 INFO L208 MainTranslator]: Completed translation [2020-12-01 15:34:04,292 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:34:04 WrapperNode [2020-12-01 15:34:04,292 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-01 15:34:04,294 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-01 15:34:04,295 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-01 15:34:04,295 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-01 15:34:04,308 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:34:04" (1/1) ... [2020-12-01 15:34:04,346 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:34:04" (1/1) ... [2020-12-01 15:34:04,392 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-01 15:34:04,396 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-01 15:34:04,397 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-01 15:34:04,397 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-01 15:34:04,409 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:34:04" (1/1) ... [2020-12-01 15:34:04,410 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:34:04" (1/1) ... [2020-12-01 15:34:04,433 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:34:04" (1/1) ... [2020-12-01 15:34:04,433 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:34:04" (1/1) ... [2020-12-01 15:34:04,442 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:34:04" (1/1) ... [2020-12-01 15:34:04,445 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:34:04" (1/1) ... [2020-12-01 15:34:04,464 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:34:04" (1/1) ... [2020-12-01 15:34:04,469 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-01 15:34:04,470 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-01 15:34:04,470 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-01 15:34:04,471 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-01 15:34:04,485 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:34:04" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ff793442-bc1f-4238-94f0-14924bb93a33/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 [2020-12-01 15:34:04,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-01 15:34:04,565 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-12-01 15:34:04,565 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-01 15:34:04,566 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-01 15:34:04,566 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-12-01 15:34:04,566 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-12-01 15:34:04,566 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-12-01 15:34:04,567 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-12-01 15:34:04,567 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-12-01 15:34:04,567 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-12-01 15:34:04,567 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2020-12-01 15:34:04,568 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2020-12-01 15:34:04,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-01 15:34:04,568 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-12-01 15:34:04,568 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-01 15:34:04,569 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-01 15:34:04,571 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-12-01 15:34:05,245 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-01 15:34:05,245 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-12-01 15:34:05,250 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:34:05 BoogieIcfgContainer [2020-12-01 15:34:05,250 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-01 15:34:05,252 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-01 15:34:05,252 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-01 15:34:05,256 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-01 15:34:05,257 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 03:34:03" (1/3) ... [2020-12-01 15:34:05,258 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c6f6803 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 03:34:05, skipping insertion in model container [2020-12-01 15:34:05,258 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:34:04" (2/3) ... [2020-12-01 15:34:05,259 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c6f6803 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 03:34:05, skipping insertion in model container [2020-12-01 15:34:05,259 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:34:05" (3/3) ... [2020-12-01 15:34:05,261 INFO L111 eAbstractionObserver]: Analyzing ICFG safe016_pso.oepc.i [2020-12-01 15:34:05,282 WARN L169 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-01 15:34:05,282 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-01 15:34:05,288 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-01 15:34:05,289 INFO L354 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-01 15:34:05,361 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:34:05,361 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:34:05,361 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:34:05,362 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:34:05,362 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:34:05,362 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:34:05,363 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:34:05,363 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:34:05,363 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:34:05,364 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:34:05,370 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:34:05,371 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:34:05,372 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:34:05,372 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:34:05,372 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:34:05,373 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:34:05,374 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:34:05,374 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:34:05,374 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:34:05,374 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:34:05,375 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:34:05,376 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:34:05,377 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:34:05,377 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:34:05,380 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:34:05,380 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:34:05,381 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:34:05,381 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:34:05,381 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:34:05,381 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:34:05,382 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:34:05,383 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:34:05,383 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:34:05,384 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:34:05,384 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:34:05,384 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:34:05,385 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:34:05,386 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:34:05,386 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:34:05,387 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:34:05,388 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:34:05,388 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:34:05,388 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:34:05,388 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:34:05,389 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:34:05,389 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:34:05,389 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:34:05,390 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:34:05,395 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:34:05,396 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:34:05,396 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:34:05,396 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:34:05,431 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:34:05,431 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:34:05,431 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:34:05,431 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:34:05,443 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:34:05,443 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:34:05,444 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:34:05,444 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:34:05,451 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:34:05,451 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:34:05,452 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:34:05,452 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:34:05,458 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-12-01 15:34:05,475 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-12-01 15:34:05,521 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-01 15:34:05,521 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-01 15:34:05,521 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-01 15:34:05,521 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-01 15:34:05,522 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-01 15:34:05,522 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-01 15:34:05,522 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-01 15:34:05,522 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-01 15:34:05,554 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-12-01 15:34:05,556 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 99 places, 89 transitions, 198 flow [2020-12-01 15:34:05,562 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 99 places, 89 transitions, 198 flow [2020-12-01 15:34:05,565 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 99 places, 89 transitions, 198 flow [2020-12-01 15:34:05,675 INFO L129 PetriNetUnfolder]: 3/85 cut-off events. [2020-12-01 15:34:05,676 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-12-01 15:34:05,682 INFO L84 FinitePrefix]: Finished finitePrefix Result has 98 conditions, 85 events. 3/85 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 72 event pairs, 0 based on Foata normal form. 0/81 useless extension candidates. Maximal degree in co-relation 72. Up to 2 conditions per place. [2020-12-01 15:34:05,690 INFO L116 LiptonReduction]: Number of co-enabled transitions 2042 [2020-12-01 15:34:09,706 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 44 [2020-12-01 15:34:09,920 WARN L197 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 44 [2020-12-01 15:34:11,757 WARN L197 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-12-01 15:34:11,896 WARN L197 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-12-01 15:34:12,170 WARN L197 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-12-01 15:34:12,321 WARN L197 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-12-01 15:34:12,473 WARN L197 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 46 [2020-12-01 15:34:12,693 WARN L197 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 50 [2020-12-01 15:34:12,884 INFO L131 LiptonReduction]: Checked pairs total: 4334 [2020-12-01 15:34:12,884 INFO L133 LiptonReduction]: Total number of compositions: 82 [2020-12-01 15:34:12,893 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 38 places, 26 transitions, 72 flow [2020-12-01 15:34:12,955 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 706 states. [2020-12-01 15:34:12,958 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states. [2020-12-01 15:34:12,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-01 15:34:12,970 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:34:12,971 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:34:12,972 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:34:12,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:34:12,979 INFO L82 PathProgramCache]: Analyzing trace with hash -782796091, now seen corresponding path program 1 times [2020-12-01 15:34:12,992 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:34:12,993 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657706996] [2020-12-01 15:34:12,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:34:13,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:34:13,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:34:13,365 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657706996] [2020-12-01 15:34:13,367 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:34:13,368 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-12-01 15:34:13,369 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583681711] [2020-12-01 15:34:13,375 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-01 15:34:13,376 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:34:13,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-01 15:34:13,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-01 15:34:13,401 INFO L87 Difference]: Start difference. First operand 706 states. Second operand 3 states. [2020-12-01 15:34:13,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:34:13,512 INFO L93 Difference]: Finished difference Result 670 states and 2295 transitions. [2020-12-01 15:34:13,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-01 15:34:13,514 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-12-01 15:34:13,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:34:13,554 INFO L225 Difference]: With dead ends: 670 [2020-12-01 15:34:13,554 INFO L226 Difference]: Without dead ends: 526 [2020-12-01 15:34:13,556 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-01 15:34:13,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2020-12-01 15:34:13,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 526. [2020-12-01 15:34:13,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 526 states. [2020-12-01 15:34:13,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 1743 transitions. [2020-12-01 15:34:13,747 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 1743 transitions. Word has length 10 [2020-12-01 15:34:13,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:34:13,748 INFO L481 AbstractCegarLoop]: Abstraction has 526 states and 1743 transitions. [2020-12-01 15:34:13,749 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-01 15:34:13,749 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 1743 transitions. [2020-12-01 15:34:13,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-01 15:34:13,752 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:34:13,756 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:34:13,757 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-01 15:34:13,757 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:34:13,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:34:13,758 INFO L82 PathProgramCache]: Analyzing trace with hash 1488897790, now seen corresponding path program 1 times [2020-12-01 15:34:13,759 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:34:13,759 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355558257] [2020-12-01 15:34:13,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:34:13,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:34:13,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:34:13,968 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355558257] [2020-12-01 15:34:13,969 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:34:13,969 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-01 15:34:13,969 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081832971] [2020-12-01 15:34:13,971 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 15:34:13,971 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:34:13,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 15:34:13,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 15:34:13,975 INFO L87 Difference]: Start difference. First operand 526 states and 1743 transitions. Second operand 4 states. [2020-12-01 15:34:14,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:34:14,029 INFO L93 Difference]: Finished difference Result 748 states and 2407 transitions. [2020-12-01 15:34:14,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-01 15:34:14,030 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-12-01 15:34:14,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:34:14,039 INFO L225 Difference]: With dead ends: 748 [2020-12-01 15:34:14,040 INFO L226 Difference]: Without dead ends: 460 [2020-12-01 15:34:14,041 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 [2020-12-01 15:34:14,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2020-12-01 15:34:14,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 460. [2020-12-01 15:34:14,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 460 states. [2020-12-01 15:34:14,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 1467 transitions. [2020-12-01 15:34:14,101 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 1467 transitions. Word has length 11 [2020-12-01 15:34:14,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:34:14,104 INFO L481 AbstractCegarLoop]: Abstraction has 460 states and 1467 transitions. [2020-12-01 15:34:14,104 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 15:34:14,104 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 1467 transitions. [2020-12-01 15:34:14,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-01 15:34:14,114 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:34:14,115 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:34:14,115 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-01 15:34:14,115 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:34:14,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:34:14,122 INFO L82 PathProgramCache]: Analyzing trace with hash -647802977, now seen corresponding path program 1 times [2020-12-01 15:34:14,122 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:34:14,122 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719156669] [2020-12-01 15:34:14,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:34:14,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:34:14,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:34:14,184 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719156669] [2020-12-01 15:34:14,184 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:34:14,185 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-12-01 15:34:14,185 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642945280] [2020-12-01 15:34:14,185 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-01 15:34:14,186 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:34:14,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-01 15:34:14,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-01 15:34:14,187 INFO L87 Difference]: Start difference. First operand 460 states and 1467 transitions. Second operand 3 states. [2020-12-01 15:34:14,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:34:14,207 INFO L93 Difference]: Finished difference Result 442 states and 1398 transitions. [2020-12-01 15:34:14,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-01 15:34:14,209 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-12-01 15:34:14,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:34:14,214 INFO L225 Difference]: With dead ends: 442 [2020-12-01 15:34:14,214 INFO L226 Difference]: Without dead ends: 442 [2020-12-01 15:34:14,215 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-01 15:34:14,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2020-12-01 15:34:14,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 442. [2020-12-01 15:34:14,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 442 states. [2020-12-01 15:34:14,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 1398 transitions. [2020-12-01 15:34:14,238 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 1398 transitions. Word has length 12 [2020-12-01 15:34:14,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:34:14,239 INFO L481 AbstractCegarLoop]: Abstraction has 442 states and 1398 transitions. [2020-12-01 15:34:14,239 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-01 15:34:14,239 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 1398 transitions. [2020-12-01 15:34:14,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-01 15:34:14,241 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:34:14,241 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:34:14,242 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-01 15:34:14,242 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:34:14,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:34:14,244 INFO L82 PathProgramCache]: Analyzing trace with hash -912860165, now seen corresponding path program 1 times [2020-12-01 15:34:14,244 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:34:14,244 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097554103] [2020-12-01 15:34:14,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:34:14,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:34:14,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:34:14,369 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097554103] [2020-12-01 15:34:14,370 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:34:14,372 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-01 15:34:14,372 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39421483] [2020-12-01 15:34:14,373 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 15:34:14,374 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:34:14,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 15:34:14,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 15:34:14,377 INFO L87 Difference]: Start difference. First operand 442 states and 1398 transitions. Second operand 4 states. [2020-12-01 15:34:14,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:34:14,436 INFO L93 Difference]: Finished difference Result 788 states and 2333 transitions. [2020-12-01 15:34:14,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-01 15:34:14,445 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-12-01 15:34:14,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:34:14,451 INFO L225 Difference]: With dead ends: 788 [2020-12-01 15:34:14,451 INFO L226 Difference]: Without dead ends: 412 [2020-12-01 15:34:14,452 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 [2020-12-01 15:34:14,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2020-12-01 15:34:14,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 376. [2020-12-01 15:34:14,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 376 states. [2020-12-01 15:34:14,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 1087 transitions. [2020-12-01 15:34:14,473 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 1087 transitions. Word has length 13 [2020-12-01 15:34:14,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:34:14,474 INFO L481 AbstractCegarLoop]: Abstraction has 376 states and 1087 transitions. [2020-12-01 15:34:14,474 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 15:34:14,474 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 1087 transitions. [2020-12-01 15:34:14,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-01 15:34:14,475 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:34:14,476 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:34:14,476 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-01 15:34:14,476 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:34:14,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:34:14,477 INFO L82 PathProgramCache]: Analyzing trace with hash 1787336884, now seen corresponding path program 1 times [2020-12-01 15:34:14,477 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:34:14,478 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076865025] [2020-12-01 15:34:14,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:34:14,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:34:14,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:34:14,587 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076865025] [2020-12-01 15:34:14,587 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:34:14,588 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-01 15:34:14,588 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30788913] [2020-12-01 15:34:14,589 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 15:34:14,589 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:34:14,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 15:34:14,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 15:34:14,591 INFO L87 Difference]: Start difference. First operand 376 states and 1087 transitions. Second operand 4 states. [2020-12-01 15:34:14,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:34:14,621 INFO L93 Difference]: Finished difference Result 494 states and 1370 transitions. [2020-12-01 15:34:14,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-01 15:34:14,622 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-12-01 15:34:14,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:34:14,625 INFO L225 Difference]: With dead ends: 494 [2020-12-01 15:34:14,625 INFO L226 Difference]: Without dead ends: 254 [2020-12-01 15:34:14,626 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 [2020-12-01 15:34:14,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2020-12-01 15:34:14,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 254. [2020-12-01 15:34:14,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2020-12-01 15:34:14,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 707 transitions. [2020-12-01 15:34:14,643 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 707 transitions. Word has length 13 [2020-12-01 15:34:14,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:34:14,643 INFO L481 AbstractCegarLoop]: Abstraction has 254 states and 707 transitions. [2020-12-01 15:34:14,643 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 15:34:14,643 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 707 transitions. [2020-12-01 15:34:14,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-01 15:34:14,645 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:34:14,645 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:34:14,645 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-01 15:34:14,645 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:34:14,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:34:14,646 INFO L82 PathProgramCache]: Analyzing trace with hash 238144508, now seen corresponding path program 1 times [2020-12-01 15:34:14,647 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:34:14,647 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187997564] [2020-12-01 15:34:14,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:34:14,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:34:14,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:34:14,797 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187997564] [2020-12-01 15:34:14,799 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:34:14,799 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-01 15:34:14,799 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164177439] [2020-12-01 15:34:14,800 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 15:34:14,800 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:34:14,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 15:34:14,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 15:34:14,801 INFO L87 Difference]: Start difference. First operand 254 states and 707 transitions. Second operand 4 states. [2020-12-01 15:34:14,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:34:14,878 INFO L93 Difference]: Finished difference Result 315 states and 812 transitions. [2020-12-01 15:34:14,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-01 15:34:14,879 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-12-01 15:34:14,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:34:14,882 INFO L225 Difference]: With dead ends: 315 [2020-12-01 15:34:14,882 INFO L226 Difference]: Without dead ends: 230 [2020-12-01 15:34:14,883 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 [2020-12-01 15:34:14,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2020-12-01 15:34:14,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 230. [2020-12-01 15:34:14,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-12-01 15:34:14,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 601 transitions. [2020-12-01 15:34:14,896 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 601 transitions. Word has length 14 [2020-12-01 15:34:14,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:34:14,897 INFO L481 AbstractCegarLoop]: Abstraction has 230 states and 601 transitions. [2020-12-01 15:34:14,897 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 15:34:14,897 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 601 transitions. [2020-12-01 15:34:14,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-01 15:34:14,899 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:34:14,899 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:34:14,899 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-01 15:34:14,899 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:34:14,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:34:14,900 INFO L82 PathProgramCache]: Analyzing trace with hash 243922642, now seen corresponding path program 1 times [2020-12-01 15:34:14,900 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:34:14,900 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170465229] [2020-12-01 15:34:14,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:34:14,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:34:15,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:34:15,014 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170465229] [2020-12-01 15:34:15,016 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:34:15,016 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-01 15:34:15,017 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653565917] [2020-12-01 15:34:15,018 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-01 15:34:15,019 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:34:15,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-01 15:34:15,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-01 15:34:15,021 INFO L87 Difference]: Start difference. First operand 230 states and 601 transitions. Second operand 5 states. [2020-12-01 15:34:15,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:34:15,107 INFO L93 Difference]: Finished difference Result 246 states and 585 transitions. [2020-12-01 15:34:15,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-01 15:34:15,108 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-12-01 15:34:15,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:34:15,112 INFO L225 Difference]: With dead ends: 246 [2020-12-01 15:34:15,112 INFO L226 Difference]: Without dead ends: 178 [2020-12-01 15:34:15,113 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-01 15:34:15,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-12-01 15:34:15,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2020-12-01 15:34:15,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-12-01 15:34:15,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 414 transitions. [2020-12-01 15:34:15,145 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 414 transitions. Word has length 15 [2020-12-01 15:34:15,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:34:15,145 INFO L481 AbstractCegarLoop]: Abstraction has 178 states and 414 transitions. [2020-12-01 15:34:15,147 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-01 15:34:15,147 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 414 transitions. [2020-12-01 15:34:15,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-01 15:34:15,148 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:34:15,148 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:34:15,149 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-01 15:34:15,149 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:34:15,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:34:15,149 INFO L82 PathProgramCache]: Analyzing trace with hash -1046603743, now seen corresponding path program 1 times [2020-12-01 15:34:15,150 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:34:15,150 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91090879] [2020-12-01 15:34:15,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:34:15,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:34:15,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:34:15,276 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91090879] [2020-12-01 15:34:15,276 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:34:15,276 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-01 15:34:15,276 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533820210] [2020-12-01 15:34:15,277 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-01 15:34:15,277 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:34:15,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-01 15:34:15,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-01 15:34:15,278 INFO L87 Difference]: Start difference. First operand 178 states and 414 transitions. Second operand 6 states. [2020-12-01 15:34:15,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:34:15,376 INFO L93 Difference]: Finished difference Result 171 states and 376 transitions. [2020-12-01 15:34:15,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-01 15:34:15,377 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-12-01 15:34:15,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:34:15,379 INFO L225 Difference]: With dead ends: 171 [2020-12-01 15:34:15,379 INFO L226 Difference]: Without dead ends: 137 [2020-12-01 15:34:15,381 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-12-01 15:34:15,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-12-01 15:34:15,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2020-12-01 15:34:15,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-12-01 15:34:15,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 301 transitions. [2020-12-01 15:34:15,388 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 301 transitions. Word has length 16 [2020-12-01 15:34:15,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:34:15,389 INFO L481 AbstractCegarLoop]: Abstraction has 137 states and 301 transitions. [2020-12-01 15:34:15,389 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-01 15:34:15,389 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 301 transitions. [2020-12-01 15:34:15,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-01 15:34:15,390 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:34:15,390 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:34:15,390 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-01 15:34:15,390 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:34:15,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:34:15,391 INFO L82 PathProgramCache]: Analyzing trace with hash 1563997083, now seen corresponding path program 1 times [2020-12-01 15:34:15,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:34:15,396 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892726711] [2020-12-01 15:34:15,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:34:15,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:34:15,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:34:15,527 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892726711] [2020-12-01 15:34:15,528 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:34:15,528 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-01 15:34:15,529 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497649972] [2020-12-01 15:34:15,529 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-01 15:34:15,529 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:34:15,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-01 15:34:15,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-01 15:34:15,530 INFO L87 Difference]: Start difference. First operand 137 states and 301 transitions. Second operand 7 states. [2020-12-01 15:34:15,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:34:15,633 INFO L93 Difference]: Finished difference Result 132 states and 289 transitions. [2020-12-01 15:34:15,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-01 15:34:15,634 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2020-12-01 15:34:15,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:34:15,635 INFO L225 Difference]: With dead ends: 132 [2020-12-01 15:34:15,635 INFO L226 Difference]: Without dead ends: 51 [2020-12-01 15:34:15,641 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-12-01 15:34:15,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-12-01 15:34:15,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2020-12-01 15:34:15,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-12-01 15:34:15,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 97 transitions. [2020-12-01 15:34:15,645 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 97 transitions. Word has length 18 [2020-12-01 15:34:15,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:34:15,645 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 97 transitions. [2020-12-01 15:34:15,645 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-01 15:34:15,645 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 97 transitions. [2020-12-01 15:34:15,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-01 15:34:15,646 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:34:15,646 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:34:15,646 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-01 15:34:15,647 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:34:15,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:34:15,647 INFO L82 PathProgramCache]: Analyzing trace with hash -299924038, now seen corresponding path program 1 times [2020-12-01 15:34:15,647 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:34:15,648 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544489949] [2020-12-01 15:34:15,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:34:15,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:34:15,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:34:15,691 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544489949] [2020-12-01 15:34:15,691 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:34:15,691 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-01 15:34:15,691 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353788509] [2020-12-01 15:34:15,692 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-01 15:34:15,692 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:34:15,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-01 15:34:15,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-01 15:34:15,693 INFO L87 Difference]: Start difference. First operand 51 states and 97 transitions. Second operand 3 states. [2020-12-01 15:34:15,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:34:15,702 INFO L93 Difference]: Finished difference Result 50 states and 96 transitions. [2020-12-01 15:34:15,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-01 15:34:15,703 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-12-01 15:34:15,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:34:15,706 INFO L225 Difference]: With dead ends: 50 [2020-12-01 15:34:15,706 INFO L226 Difference]: Without dead ends: 0 [2020-12-01 15:34:15,706 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-01 15:34:15,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-01 15:34:15,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-01 15:34:15,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-01 15:34:15,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-01 15:34:15,707 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2020-12-01 15:34:15,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:34:15,707 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-01 15:34:15,707 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-01 15:34:15,708 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-01 15:34:15,711 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-01 15:34:15,711 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-01 15:34:15,715 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.12 03:34:15 BasicIcfg [2020-12-01 15:34:15,715 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-01 15:34:15,716 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-01 15:34:15,716 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-01 15:34:15,716 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-01 15:34:15,717 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:34:05" (3/4) ... [2020-12-01 15:34:15,722 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-01 15:34:15,731 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-12-01 15:34:15,731 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-12-01 15:34:15,731 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-12-01 15:34:15,732 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P3 [2020-12-01 15:34:15,741 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2020-12-01 15:34:15,741 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-01 15:34:15,742 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-01 15:34:15,742 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-01 15:34:15,820 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_ff793442-bc1f-4238-94f0-14924bb93a33/bin/uautomizer/witness.graphml [2020-12-01 15:34:15,821 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-01 15:34:15,822 INFO L168 Benchmark]: Toolchain (without parser) took 12556.03 ms. Allocated memory was 86.0 MB in the beginning and 172.0 MB in the end (delta: 86.0 MB). Free memory was 53.0 MB in the beginning and 90.4 MB in the end (delta: -37.3 MB). Peak memory consumption was 48.6 MB. Max. memory is 16.1 GB. [2020-12-01 15:34:15,823 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 86.0 MB. Free memory was 43.3 MB in the beginning and 43.2 MB in the end (delta: 75.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 15:34:15,823 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1021.15 ms. Allocated memory was 86.0 MB in the beginning and 117.4 MB in the end (delta: 31.5 MB). Free memory was 53.0 MB in the beginning and 73.1 MB in the end (delta: -20.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-12-01 15:34:15,824 INFO L168 Benchmark]: Boogie Procedure Inliner took 98.62 ms. Allocated memory is still 117.4 MB. Free memory was 73.1 MB in the beginning and 71.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 15:34:15,824 INFO L168 Benchmark]: Boogie Preprocessor took 73.11 ms. Allocated memory is still 117.4 MB. Free memory was 71.0 MB in the beginning and 69.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 15:34:15,825 INFO L168 Benchmark]: RCFGBuilder took 780.10 ms. Allocated memory is still 117.4 MB. Free memory was 69.6 MB in the beginning and 45.6 MB in the end (delta: 24.0 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2020-12-01 15:34:15,825 INFO L168 Benchmark]: TraceAbstraction took 10463.31 ms. Allocated memory was 117.4 MB in the beginning and 172.0 MB in the end (delta: 54.5 MB). Free memory was 45.6 MB in the beginning and 92.5 MB in the end (delta: -46.9 MB). Peak memory consumption was 9.2 MB. Max. memory is 16.1 GB. [2020-12-01 15:34:15,826 INFO L168 Benchmark]: Witness Printer took 105.02 ms. Allocated memory is still 172.0 MB. Free memory was 92.5 MB in the beginning and 90.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 15:34:15,828 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 86.0 MB. Free memory was 43.3 MB in the beginning and 43.2 MB in the end (delta: 75.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 1021.15 ms. Allocated memory was 86.0 MB in the beginning and 117.4 MB in the end (delta: 31.5 MB). Free memory was 53.0 MB in the beginning and 73.1 MB in the end (delta: -20.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 98.62 ms. Allocated memory is still 117.4 MB. Free memory was 73.1 MB in the beginning and 71.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 73.11 ms. Allocated memory is still 117.4 MB. Free memory was 71.0 MB in the beginning and 69.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 780.10 ms. Allocated memory is still 117.4 MB. Free memory was 69.6 MB in the beginning and 45.6 MB in the end (delta: 24.0 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 10463.31 ms. Allocated memory was 117.4 MB in the beginning and 172.0 MB in the end (delta: 54.5 MB). Free memory was 45.6 MB in the beginning and 92.5 MB in the end (delta: -46.9 MB). Peak memory consumption was 9.2 MB. Max. memory is 16.1 GB. * Witness Printer took 105.02 ms. Allocated memory is still 172.0 MB. Free memory was 92.5 MB in the beginning and 90.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1489 VarBasedMoverChecksPositive, 67 VarBasedMoverChecksNegative, 13 SemBasedMoverChecksPositive, 54 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.9s, 106 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 7.3s, 99 PlacesBefore, 38 PlacesAfterwards, 89 TransitionsBefore, 26 TransitionsAfterwards, 2042 CoEnabledTransitionPairs, 7 FixpointIterations, 17 TrivialSequentialCompositions, 49 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 14 ConcurrentYvCompositions, 2 ChoiceCompositions, 82 TotalNumberOfCompositions, 4334 MoverChecksTotal - PositiveResult [Line: 17]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 87 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 10.1s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 7.4s, HoareTripleCheckerStatistics: 222 SDtfs, 227 SDslu, 318 SDs, 0 SdLazy, 183 SolverSat, 45 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 32 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=706occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 10 MinimizatonAttempts, 36 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 142 NumberOfCodeBlocks, 142 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 132 ConstructedInterpolants, 0 QuantifiedInterpolants, 5238 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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...