./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe014_pso.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 69874e26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_b982ad6a-9ea1-49c2-9834-eda3f953131b/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_b982ad6a-9ea1-49c2-9834-eda3f953131b/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_b982ad6a-9ea1-49c2-9834-eda3f953131b/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_b982ad6a-9ea1-49c2-9834-eda3f953131b/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe014_pso.oepc.i -s /tmp/vcloud-vcloud-master/worker/run_dir_b982ad6a-9ea1-49c2-9834-eda3f953131b/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_b982ad6a-9ea1-49c2-9834-eda3f953131b/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 09cc37004f61233243127b1a254be8b536d0c1f6 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-69874e2 [2020-12-01 15:46:29,296 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-01 15:46:29,299 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-01 15:46:29,392 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-01 15:46:29,393 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-01 15:46:29,409 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-01 15:46:29,411 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-01 15:46:29,414 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-01 15:46:29,421 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-01 15:46:29,422 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-01 15:46:29,423 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-01 15:46:29,425 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-01 15:46:29,425 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-01 15:46:29,427 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-01 15:46:29,428 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-01 15:46:29,430 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-01 15:46:29,432 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-01 15:46:29,433 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-01 15:46:29,435 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-01 15:46:29,438 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-01 15:46:29,441 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-01 15:46:29,442 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-01 15:46:29,444 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-01 15:46:29,445 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-01 15:46:29,450 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-01 15:46:29,450 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-01 15:46:29,451 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-01 15:46:29,452 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-01 15:46:29,453 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-01 15:46:29,454 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-01 15:46:29,455 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-01 15:46:29,456 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-01 15:46:29,460 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-01 15:46:29,461 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-01 15:46:29,463 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-01 15:46:29,463 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-01 15:46:29,464 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-01 15:46:29,465 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-01 15:46:29,465 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-01 15:46:29,466 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-01 15:46:29,468 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-01 15:46:29,476 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_b982ad6a-9ea1-49c2-9834-eda3f953131b/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-12-01 15:46:29,520 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-01 15:46:29,520 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-01 15:46:29,522 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-01 15:46:29,522 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-01 15:46:29,523 INFO L138 SettingsManager]: * Use SBE=true [2020-12-01 15:46:29,523 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-01 15:46:29,523 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-01 15:46:29,524 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-01 15:46:29,524 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-01 15:46:29,524 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-01 15:46:29,525 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-01 15:46:29,525 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-01 15:46:29,526 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-01 15:46:29,526 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-01 15:46:29,526 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-01 15:46:29,526 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-01 15:46:29,527 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-01 15:46:29,527 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-01 15:46:29,527 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-01 15:46:29,527 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-01 15:46:29,528 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-01 15:46:29,528 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-01 15:46:29,528 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-01 15:46:29,528 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-01 15:46:29,528 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-01 15:46:29,529 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-01 15:46:29,529 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-01 15:46:29,529 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-01 15:46:29,529 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-01 15:46:29,530 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_b982ad6a-9ea1-49c2-9834-eda3f953131b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_b982ad6a-9ea1-49c2-9834-eda3f953131b/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 09cc37004f61233243127b1a254be8b536d0c1f6 [2020-12-01 15:46:29,869 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-01 15:46:29,907 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-01 15:46:29,910 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-01 15:46:29,911 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-01 15:46:29,912 INFO L275 PluginConnector]: CDTParser initialized [2020-12-01 15:46:29,914 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_b982ad6a-9ea1-49c2-9834-eda3f953131b/bin/uautomizer/../../sv-benchmarks/c/pthread-wmm/safe014_pso.oepc.i [2020-12-01 15:46:29,988 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b982ad6a-9ea1-49c2-9834-eda3f953131b/bin/uautomizer/data/d2f9697ee/9c7d20e05c5147468ea2e74fd0cc33d3/FLAGfd1f4e3bd [2020-12-01 15:46:30,711 INFO L306 CDTParser]: Found 1 translation units. [2020-12-01 15:46:30,712 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_b982ad6a-9ea1-49c2-9834-eda3f953131b/sv-benchmarks/c/pthread-wmm/safe014_pso.oepc.i [2020-12-01 15:46:30,744 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b982ad6a-9ea1-49c2-9834-eda3f953131b/bin/uautomizer/data/d2f9697ee/9c7d20e05c5147468ea2e74fd0cc33d3/FLAGfd1f4e3bd [2020-12-01 15:46:30,901 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_b982ad6a-9ea1-49c2-9834-eda3f953131b/bin/uautomizer/data/d2f9697ee/9c7d20e05c5147468ea2e74fd0cc33d3 [2020-12-01 15:46:30,905 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-01 15:46:30,908 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-01 15:46:30,912 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-01 15:46:30,913 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-01 15:46:30,917 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-01 15:46:30,919 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 03:46:30" (1/1) ... [2020-12-01 15:46:30,921 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@362c1faf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:46:30, skipping insertion in model container [2020-12-01 15:46:30,922 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 03:46:30" (1/1) ... [2020-12-01 15:46:30,932 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-01 15:46:31,013 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-01 15:46:31,538 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 15:46:31,553 INFO L203 MainTranslator]: Completed pre-run [2020-12-01 15:46:31,651 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 15:46:31,767 INFO L208 MainTranslator]: Completed translation [2020-12-01 15:46:31,769 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:46:31 WrapperNode [2020-12-01 15:46:31,770 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-01 15:46:31,771 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-01 15:46:31,771 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-01 15:46:31,772 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-01 15:46:31,781 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:46:31" (1/1) ... [2020-12-01 15:46:31,827 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:46:31" (1/1) ... [2020-12-01 15:46:31,859 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-01 15:46:31,861 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-01 15:46:31,862 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-01 15:46:31,862 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-01 15:46:31,872 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:46:31" (1/1) ... [2020-12-01 15:46:31,873 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:46:31" (1/1) ... [2020-12-01 15:46:31,887 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:46:31" (1/1) ... [2020-12-01 15:46:31,889 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:46:31" (1/1) ... [2020-12-01 15:46:31,896 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:46:31" (1/1) ... [2020-12-01 15:46:31,907 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:46:31" (1/1) ... [2020-12-01 15:46:31,910 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:46:31" (1/1) ... [2020-12-01 15:46:31,923 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-01 15:46:31,924 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-01 15:46:31,932 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-01 15:46:31,933 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-01 15:46:31,934 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:46:31" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b982ad6a-9ea1-49c2-9834-eda3f953131b/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 15:46:32,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-01 15:46:32,023 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-12-01 15:46:32,023 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-01 15:46:32,023 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-01 15:46:32,024 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-12-01 15:46:32,024 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-12-01 15:46:32,024 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-12-01 15:46:32,024 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-12-01 15:46:32,025 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-12-01 15:46:32,025 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-12-01 15:46:32,025 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-01 15:46:32,025 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-12-01 15:46:32,026 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-01 15:46:32,026 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-01 15:46:32,028 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 15:46:32,607 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-01 15:46:32,607 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-12-01 15:46:32,611 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:46:32 BoogieIcfgContainer [2020-12-01 15:46:32,612 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-01 15:46:32,614 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-01 15:46:32,614 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-01 15:46:32,618 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-01 15:46:32,618 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 03:46:30" (1/3) ... [2020-12-01 15:46:32,619 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64c6b29a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 03:46:32, skipping insertion in model container [2020-12-01 15:46:32,619 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:46:31" (2/3) ... [2020-12-01 15:46:32,619 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64c6b29a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 03:46:32, skipping insertion in model container [2020-12-01 15:46:32,620 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:46:32" (3/3) ... [2020-12-01 15:46:32,621 INFO L111 eAbstractionObserver]: Analyzing ICFG safe014_pso.oepc.i [2020-12-01 15:46:32,638 WARN L169 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-01 15:46:32,638 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-01 15:46:32,642 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-01 15:46:32,643 INFO L354 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-01 15:46:32,690 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:46:32,691 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:46:32,691 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:46:32,691 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:46:32,691 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:46:32,692 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:46:32,692 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:46:32,692 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:46:32,693 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:46:32,693 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:46:32,693 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:46:32,693 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:46:32,694 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:46:32,694 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:46:32,695 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:46:32,695 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:46:32,695 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:46:32,695 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:46:32,696 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:46:32,696 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:46:32,696 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:46:32,696 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:46:32,697 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:46:32,697 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:46:32,700 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:46:32,700 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:46:32,701 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:46:32,701 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:46:32,702 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:46:32,702 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:46:32,702 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:46:32,706 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:46:32,707 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:46:32,708 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:46:32,708 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:46:32,709 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:46:32,716 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:46:32,717 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:46:32,717 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:46:32,717 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:46:32,728 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:46:32,728 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:46:32,729 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:46:32,729 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:46:32,732 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:46:32,733 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:46:32,733 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:46:32,733 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:46:32,736 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-12-01 15:46:32,750 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-12-01 15:46:32,789 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-01 15:46:32,792 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-01 15:46:32,793 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-01 15:46:32,793 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-01 15:46:32,793 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-01 15:46:32,793 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-01 15:46:32,793 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-01 15:46:32,793 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-01 15:46:32,819 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-12-01 15:46:32,821 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 86 places, 79 transitions, 173 flow [2020-12-01 15:46:32,823 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 86 places, 79 transitions, 173 flow [2020-12-01 15:46:32,825 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 86 places, 79 transitions, 173 flow [2020-12-01 15:46:32,873 INFO L129 PetriNetUnfolder]: 3/76 cut-off events. [2020-12-01 15:46:32,873 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-12-01 15:46:32,878 INFO L84 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 76 events. 3/76 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 57 event pairs, 0 based on Foata normal form. 0/72 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2020-12-01 15:46:32,881 INFO L116 LiptonReduction]: Number of co-enabled transitions 1440 [2020-12-01 15:46:35,791 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 43 [2020-12-01 15:46:36,834 WARN L197 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2020-12-01 15:46:36,954 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-12-01 15:46:37,198 WARN L197 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2020-12-01 15:46:37,314 INFO L131 LiptonReduction]: Checked pairs total: 2779 [2020-12-01 15:46:37,315 INFO L133 LiptonReduction]: Total number of compositions: 70 [2020-12-01 15:46:37,321 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-12-01 15:46:37,351 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-12-01 15:46:37,353 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-12-01 15:46:37,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-01 15:46:37,361 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:46:37,362 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:46:37,362 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:46:37,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:46:37,368 INFO L82 PathProgramCache]: Analyzing trace with hash -460323677, now seen corresponding path program 1 times [2020-12-01 15:46:37,378 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:46:37,378 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896655678] [2020-12-01 15:46:37,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:46:37,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:46:37,586 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 15:46:37,586 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896655678] [2020-12-01 15:46:37,587 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:46:37,588 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-01 15:46:37,588 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84006192] [2020-12-01 15:46:37,593 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-01 15:46:37,593 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:46:37,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-01 15:46:37,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-01 15:46:37,613 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-12-01 15:46:37,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:46:37,669 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-12-01 15:46:37,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-01 15:46:37,671 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-12-01 15:46:37,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:46:37,698 INFO L225 Difference]: With dead ends: 362 [2020-12-01 15:46:37,698 INFO L226 Difference]: Without dead ends: 298 [2020-12-01 15:46:37,699 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-01 15:46:37,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-12-01 15:46:37,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-12-01 15:46:37,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-12-01 15:46:37,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-12-01 15:46:37,773 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-12-01 15:46:37,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:46:37,774 INFO L481 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-12-01 15:46:37,774 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-01 15:46:37,774 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-12-01 15:46:37,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-01 15:46:37,776 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:46:37,776 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:46:37,776 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-01 15:46:37,777 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:46:37,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:46:37,777 INFO L82 PathProgramCache]: Analyzing trace with hash -1385173359, now seen corresponding path program 1 times [2020-12-01 15:46:37,778 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:46:37,778 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876168910] [2020-12-01 15:46:37,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:46:37,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:46:37,941 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 15:46:37,942 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876168910] [2020-12-01 15:46:37,942 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:46:37,942 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-01 15:46:37,942 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958330780] [2020-12-01 15:46:37,943 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-01 15:46:37,944 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:46:37,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-01 15:46:37,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-01 15:46:37,945 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 5 states. [2020-12-01 15:46:38,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:46:38,044 INFO L93 Difference]: Finished difference Result 315 states and 857 transitions. [2020-12-01 15:46:38,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-01 15:46:38,045 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-12-01 15:46:38,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:46:38,052 INFO L225 Difference]: With dead ends: 315 [2020-12-01 15:46:38,052 INFO L226 Difference]: Without dead ends: 287 [2020-12-01 15:46:38,053 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-01 15:46:38,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2020-12-01 15:46:38,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2020-12-01 15:46:38,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2020-12-01 15:46:38,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 805 transitions. [2020-12-01 15:46:38,107 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 805 transitions. Word has length 9 [2020-12-01 15:46:38,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:46:38,107 INFO L481 AbstractCegarLoop]: Abstraction has 287 states and 805 transitions. [2020-12-01 15:46:38,107 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-01 15:46:38,108 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 805 transitions. [2020-12-01 15:46:38,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-01 15:46:38,111 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:46:38,111 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:46:38,111 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-01 15:46:38,112 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:46:38,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:46:38,121 INFO L82 PathProgramCache]: Analyzing trace with hash 585999155, now seen corresponding path program 1 times [2020-12-01 15:46:38,121 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:46:38,122 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941177261] [2020-12-01 15:46:38,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:46:38,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:46:38,298 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 15:46:38,298 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941177261] [2020-12-01 15:46:38,299 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:46:38,299 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-01 15:46:38,299 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887401001] [2020-12-01 15:46:38,300 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-01 15:46:38,300 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:46:38,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-01 15:46:38,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-01 15:46:38,301 INFO L87 Difference]: Start difference. First operand 287 states and 805 transitions. Second operand 6 states. [2020-12-01 15:46:38,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:46:38,412 INFO L93 Difference]: Finished difference Result 365 states and 953 transitions. [2020-12-01 15:46:38,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-01 15:46:38,413 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-12-01 15:46:38,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:46:38,416 INFO L225 Difference]: With dead ends: 365 [2020-12-01 15:46:38,416 INFO L226 Difference]: Without dead ends: 287 [2020-12-01 15:46:38,417 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-12-01 15:46:38,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2020-12-01 15:46:38,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 257. [2020-12-01 15:46:38,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 257 states. [2020-12-01 15:46:38,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 673 transitions. [2020-12-01 15:46:38,434 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 673 transitions. Word has length 10 [2020-12-01 15:46:38,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:46:38,434 INFO L481 AbstractCegarLoop]: Abstraction has 257 states and 673 transitions. [2020-12-01 15:46:38,434 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-01 15:46:38,434 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 673 transitions. [2020-12-01 15:46:38,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-01 15:46:38,436 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:46:38,436 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:46:38,437 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-01 15:46:38,437 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:46:38,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:46:38,438 INFO L82 PathProgramCache]: Analyzing trace with hash 1108046969, now seen corresponding path program 1 times [2020-12-01 15:46:38,438 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:46:38,438 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541377946] [2020-12-01 15:46:38,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:46:38,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:46:38,498 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 15:46:38,499 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541377946] [2020-12-01 15:46:38,499 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:46:38,499 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-01 15:46:38,500 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591944127] [2020-12-01 15:46:38,500 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 15:46:38,500 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:46:38,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 15:46:38,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 15:46:38,502 INFO L87 Difference]: Start difference. First operand 257 states and 673 transitions. Second operand 4 states. [2020-12-01 15:46:38,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:46:38,528 INFO L93 Difference]: Finished difference Result 271 states and 685 transitions. [2020-12-01 15:46:38,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-01 15:46:38,528 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-12-01 15:46:38,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:46:38,531 INFO L225 Difference]: With dead ends: 271 [2020-12-01 15:46:38,531 INFO L226 Difference]: Without dead ends: 243 [2020-12-01 15:46:38,532 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 15:46:38,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2020-12-01 15:46:38,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 243. [2020-12-01 15:46:38,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2020-12-01 15:46:38,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 633 transitions. [2020-12-01 15:46:38,548 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 633 transitions. Word has length 12 [2020-12-01 15:46:38,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:46:38,548 INFO L481 AbstractCegarLoop]: Abstraction has 243 states and 633 transitions. [2020-12-01 15:46:38,548 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 15:46:38,548 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 633 transitions. [2020-12-01 15:46:38,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-01 15:46:38,555 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:46:38,555 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:46:38,556 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-01 15:46:38,556 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:46:38,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:46:38,559 INFO L82 PathProgramCache]: Analyzing trace with hash 229025079, now seen corresponding path program 1 times [2020-12-01 15:46:38,563 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:46:38,563 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782303449] [2020-12-01 15:46:38,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:46:38,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:46:38,665 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 15:46:38,665 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782303449] [2020-12-01 15:46:38,665 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:46:38,665 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-01 15:46:38,666 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272579569] [2020-12-01 15:46:38,666 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 15:46:38,666 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:46:38,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 15:46:38,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 15:46:38,667 INFO L87 Difference]: Start difference. First operand 243 states and 633 transitions. Second operand 4 states. [2020-12-01 15:46:38,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:46:38,707 INFO L93 Difference]: Finished difference Result 259 states and 651 transitions. [2020-12-01 15:46:38,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-01 15:46:38,708 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-12-01 15:46:38,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:46:38,710 INFO L225 Difference]: With dead ends: 259 [2020-12-01 15:46:38,711 INFO L226 Difference]: Without dead ends: 227 [2020-12-01 15:46:38,711 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 15:46:38,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2020-12-01 15:46:38,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 227. [2020-12-01 15:46:38,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2020-12-01 15:46:38,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 583 transitions. [2020-12-01 15:46:38,722 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 583 transitions. Word has length 12 [2020-12-01 15:46:38,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:46:38,723 INFO L481 AbstractCegarLoop]: Abstraction has 227 states and 583 transitions. [2020-12-01 15:46:38,723 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 15:46:38,723 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 583 transitions. [2020-12-01 15:46:38,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-01 15:46:38,741 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:46:38,741 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:46:38,742 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-01 15:46:38,742 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:46:38,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:46:38,742 INFO L82 PathProgramCache]: Analyzing trace with hash 1671480069, now seen corresponding path program 1 times [2020-12-01 15:46:38,743 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:46:38,743 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166912513] [2020-12-01 15:46:38,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:46:38,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:46:38,820 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 15:46:38,821 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166912513] [2020-12-01 15:46:38,823 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:46:38,823 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-01 15:46:38,823 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795265862] [2020-12-01 15:46:38,824 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 15:46:38,824 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:46:38,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 15:46:38,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 15:46:38,826 INFO L87 Difference]: Start difference. First operand 227 states and 583 transitions. Second operand 4 states. [2020-12-01 15:46:38,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:46:38,854 INFO L93 Difference]: Finished difference Result 237 states and 591 transitions. [2020-12-01 15:46:38,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-01 15:46:38,855 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-12-01 15:46:38,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:46:38,857 INFO L225 Difference]: With dead ends: 237 [2020-12-01 15:46:38,857 INFO L226 Difference]: Without dead ends: 217 [2020-12-01 15:46:38,858 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 15:46:38,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2020-12-01 15:46:38,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 210. [2020-12-01 15:46:38,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2020-12-01 15:46:38,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 542 transitions. [2020-12-01 15:46:38,868 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 542 transitions. Word has length 13 [2020-12-01 15:46:38,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:46:38,868 INFO L481 AbstractCegarLoop]: Abstraction has 210 states and 542 transitions. [2020-12-01 15:46:38,868 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 15:46:38,868 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 542 transitions. [2020-12-01 15:46:38,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-01 15:46:38,869 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:46:38,869 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:46:38,869 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-01 15:46:38,870 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:46:38,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:46:38,871 INFO L82 PathProgramCache]: Analyzing trace with hash 1286592520, now seen corresponding path program 1 times [2020-12-01 15:46:38,872 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:46:38,872 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633786728] [2020-12-01 15:46:38,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:46:38,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:46:38,957 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 15:46:38,958 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633786728] [2020-12-01 15:46:38,958 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:46:38,958 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-01 15:46:38,959 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588049386] [2020-12-01 15:46:38,959 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-01 15:46:38,960 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:46:38,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-01 15:46:38,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-01 15:46:38,962 INFO L87 Difference]: Start difference. First operand 210 states and 542 transitions. Second operand 5 states. [2020-12-01 15:46:39,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:46:39,043 INFO L93 Difference]: Finished difference Result 312 states and 788 transitions. [2020-12-01 15:46:39,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-01 15:46:39,045 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-12-01 15:46:39,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:46:39,047 INFO L225 Difference]: With dead ends: 312 [2020-12-01 15:46:39,047 INFO L226 Difference]: Without dead ends: 196 [2020-12-01 15:46:39,047 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-01 15:46:39,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-12-01 15:46:39,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 196. [2020-12-01 15:46:39,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-12-01 15:46:39,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 492 transitions. [2020-12-01 15:46:39,056 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 492 transitions. Word has length 13 [2020-12-01 15:46:39,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:46:39,056 INFO L481 AbstractCegarLoop]: Abstraction has 196 states and 492 transitions. [2020-12-01 15:46:39,056 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-01 15:46:39,057 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 492 transitions. [2020-12-01 15:46:39,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-01 15:46:39,058 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:46:39,058 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:46:39,058 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-01 15:46:39,058 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:46:39,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:46:39,059 INFO L82 PathProgramCache]: Analyzing trace with hash -1005627737, now seen corresponding path program 1 times [2020-12-01 15:46:39,059 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:46:39,059 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097417308] [2020-12-01 15:46:39,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:46:39,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:46:39,110 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 15:46:39,111 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097417308] [2020-12-01 15:46:39,111 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:46:39,111 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-01 15:46:39,112 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589603988] [2020-12-01 15:46:39,112 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-01 15:46:39,112 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:46:39,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-01 15:46:39,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-01 15:46:39,114 INFO L87 Difference]: Start difference. First operand 196 states and 492 transitions. Second operand 5 states. [2020-12-01 15:46:39,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:46:39,171 INFO L93 Difference]: Finished difference Result 238 states and 579 transitions. [2020-12-01 15:46:39,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-01 15:46:39,173 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-12-01 15:46:39,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:46:39,174 INFO L225 Difference]: With dead ends: 238 [2020-12-01 15:46:39,174 INFO L226 Difference]: Without dead ends: 116 [2020-12-01 15:46:39,175 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-01 15:46:39,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-12-01 15:46:39,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2020-12-01 15:46:39,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-12-01 15:46:39,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 276 transitions. [2020-12-01 15:46:39,181 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 276 transitions. Word has length 14 [2020-12-01 15:46:39,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:46:39,182 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 276 transitions. [2020-12-01 15:46:39,182 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-01 15:46:39,182 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 276 transitions. [2020-12-01 15:46:39,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-01 15:46:39,183 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:46:39,183 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:46:39,183 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-01 15:46:39,184 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:46:39,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:46:39,184 INFO L82 PathProgramCache]: Analyzing trace with hash -1405608924, now seen corresponding path program 1 times [2020-12-01 15:46:39,185 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:46:39,185 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132352913] [2020-12-01 15:46:39,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:46:39,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:46:39,234 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 15:46:39,234 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132352913] [2020-12-01 15:46:39,235 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:46:39,235 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-01 15:46:39,235 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011820852] [2020-12-01 15:46:39,235 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 15:46:39,236 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:46:39,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 15:46:39,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 15:46:39,237 INFO L87 Difference]: Start difference. First operand 116 states and 276 transitions. Second operand 4 states. [2020-12-01 15:46:39,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:46:39,267 INFO L93 Difference]: Finished difference Result 137 states and 299 transitions. [2020-12-01 15:46:39,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-01 15:46:39,267 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-12-01 15:46:39,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:46:39,269 INFO L225 Difference]: With dead ends: 137 [2020-12-01 15:46:39,269 INFO L226 Difference]: Without dead ends: 97 [2020-12-01 15:46:39,270 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 15:46:39,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-12-01 15:46:39,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2020-12-01 15:46:39,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-12-01 15:46:39,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 207 transitions. [2020-12-01 15:46:39,275 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 207 transitions. Word has length 14 [2020-12-01 15:46:39,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:46:39,275 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 207 transitions. [2020-12-01 15:46:39,275 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 15:46:39,275 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 207 transitions. [2020-12-01 15:46:39,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-01 15:46:39,276 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:46:39,276 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:46:39,276 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-01 15:46:39,277 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:46:39,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:46:39,277 INFO L82 PathProgramCache]: Analyzing trace with hash -27259733, now seen corresponding path program 1 times [2020-12-01 15:46:39,277 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:46:39,278 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667980167] [2020-12-01 15:46:39,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:46:39,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:46:39,358 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 15:46:39,358 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667980167] [2020-12-01 15:46:39,359 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:46:39,359 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-01 15:46:39,359 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730178782] [2020-12-01 15:46:39,360 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-01 15:46:39,360 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:46:39,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-01 15:46:39,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-01 15:46:39,361 INFO L87 Difference]: Start difference. First operand 97 states and 207 transitions. Second operand 5 states. [2020-12-01 15:46:39,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:46:39,403 INFO L93 Difference]: Finished difference Result 95 states and 184 transitions. [2020-12-01 15:46:39,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-01 15:46:39,404 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-12-01 15:46:39,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:46:39,405 INFO L225 Difference]: With dead ends: 95 [2020-12-01 15:46:39,405 INFO L226 Difference]: Without dead ends: 70 [2020-12-01 15:46:39,406 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-01 15:46:39,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-12-01 15:46:39,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2020-12-01 15:46:39,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-12-01 15:46:39,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 128 transitions. [2020-12-01 15:46:39,410 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 128 transitions. Word has length 15 [2020-12-01 15:46:39,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:46:39,410 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 128 transitions. [2020-12-01 15:46:39,411 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-01 15:46:39,411 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 128 transitions. [2020-12-01 15:46:39,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-01 15:46:39,411 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:46:39,412 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:46:39,412 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-01 15:46:39,412 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:46:39,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:46:39,413 INFO L82 PathProgramCache]: Analyzing trace with hash -1628487690, now seen corresponding path program 1 times [2020-12-01 15:46:39,413 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:46:39,413 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663240629] [2020-12-01 15:46:39,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:46:39,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:46:39,466 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 15:46:39,467 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663240629] [2020-12-01 15:46:39,467 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:46:39,467 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-01 15:46:39,468 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691040592] [2020-12-01 15:46:39,468 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-01 15:46:39,468 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:46:39,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-01 15:46:39,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-01 15:46:39,470 INFO L87 Difference]: Start difference. First operand 70 states and 128 transitions. Second operand 6 states. [2020-12-01 15:46:39,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:46:39,529 INFO L93 Difference]: Finished difference Result 63 states and 112 transitions. [2020-12-01 15:46:39,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-01 15:46:39,530 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-12-01 15:46:39,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:46:39,531 INFO L225 Difference]: With dead ends: 63 [2020-12-01 15:46:39,531 INFO L226 Difference]: Without dead ends: 55 [2020-12-01 15:46:39,531 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-12-01 15:46:39,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-12-01 15:46:39,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-12-01 15:46:39,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-12-01 15:46:39,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 98 transitions. [2020-12-01 15:46:39,535 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 98 transitions. Word has length 16 [2020-12-01 15:46:39,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:46:39,535 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 98 transitions. [2020-12-01 15:46:39,535 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-01 15:46:39,535 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 98 transitions. [2020-12-01 15:46:39,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-01 15:46:39,536 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:46:39,536 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 15:46:39,537 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-01 15:46:39,537 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:46:39,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:46:39,537 INFO L82 PathProgramCache]: Analyzing trace with hash -1397206146, now seen corresponding path program 1 times [2020-12-01 15:46:39,538 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:46:39,538 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972503683] [2020-12-01 15:46:39,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:46:39,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:46:39,624 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 15:46:39,624 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972503683] [2020-12-01 15:46:39,624 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:46:39,625 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-01 15:46:39,625 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193602750] [2020-12-01 15:46:39,625 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-01 15:46:39,626 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:46:39,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-01 15:46:39,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-01 15:46:39,627 INFO L87 Difference]: Start difference. First operand 55 states and 98 transitions. Second operand 5 states. [2020-12-01 15:46:39,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:46:39,672 INFO L93 Difference]: Finished difference Result 65 states and 112 transitions. [2020-12-01 15:46:39,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-01 15:46:39,673 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-12-01 15:46:39,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:46:39,674 INFO L225 Difference]: With dead ends: 65 [2020-12-01 15:46:39,674 INFO L226 Difference]: Without dead ends: 36 [2020-12-01 15:46:39,674 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-01 15:46:39,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-12-01 15:46:39,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-12-01 15:46:39,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-12-01 15:46:39,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 57 transitions. [2020-12-01 15:46:39,677 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 57 transitions. Word has length 18 [2020-12-01 15:46:39,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:46:39,678 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 57 transitions. [2020-12-01 15:46:39,678 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-01 15:46:39,678 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 57 transitions. [2020-12-01 15:46:39,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-01 15:46:39,679 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:46:39,679 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 15:46:39,679 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-01 15:46:39,680 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:46:39,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:46:39,680 INFO L82 PathProgramCache]: Analyzing trace with hash 1333208262, now seen corresponding path program 2 times [2020-12-01 15:46:39,681 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:46:39,681 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577800190] [2020-12-01 15:46:39,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:46:39,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:46:39,734 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 15:46:39,734 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577800190] [2020-12-01 15:46:39,735 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:46:39,735 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-01 15:46:39,735 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89883460] [2020-12-01 15:46:39,736 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-01 15:46:39,736 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:46:39,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-01 15:46:39,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-01 15:46:39,737 INFO L87 Difference]: Start difference. First operand 36 states and 57 transitions. Second operand 5 states. [2020-12-01 15:46:39,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:46:39,768 INFO L93 Difference]: Finished difference Result 35 states and 56 transitions. [2020-12-01 15:46:39,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-01 15:46:39,769 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-12-01 15:46:39,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:46:39,769 INFO L225 Difference]: With dead ends: 35 [2020-12-01 15:46:39,770 INFO L226 Difference]: Without dead ends: 0 [2020-12-01 15:46:39,770 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-01 15:46:39,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-01 15:46:39,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-01 15:46:39,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-01 15:46:39,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-01 15:46:39,771 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-12-01 15:46:39,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:46:39,772 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-01 15:46:39,772 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-01 15:46:39,772 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-01 15:46:39,772 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-01 15:46:39,772 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-01 15:46:39,775 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.12 03:46:39 BasicIcfg [2020-12-01 15:46:39,776 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-01 15:46:39,776 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-01 15:46:39,777 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-01 15:46:39,777 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-01 15:46:39,777 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:46:32" (3/4) ... [2020-12-01 15:46:39,781 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-01 15:46:39,788 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-12-01 15:46:39,788 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-12-01 15:46:39,788 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-12-01 15:46:39,793 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-12-01 15:46:39,794 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-01 15:46:39,794 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-01 15:46:39,794 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-01 15:46:39,837 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_b982ad6a-9ea1-49c2-9834-eda3f953131b/bin/uautomizer/witness.graphml [2020-12-01 15:46:39,838 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-01 15:46:39,839 INFO L168 Benchmark]: Toolchain (without parser) took 8930.58 ms. Allocated memory was 113.2 MB in the beginning and 201.3 MB in the end (delta: 88.1 MB). Free memory was 80.2 MB in the beginning and 145.0 MB in the end (delta: -64.8 MB). Peak memory consumption was 23.6 MB. Max. memory is 16.1 GB. [2020-12-01 15:46:39,840 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 79.7 MB. Free memory was 36.9 MB in the beginning and 36.9 MB in the end (delta: 37.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 15:46:39,840 INFO L168 Benchmark]: CACSL2BoogieTranslator took 857.57 ms. Allocated memory is still 113.2 MB. Free memory was 79.9 MB in the beginning and 68.0 MB in the end (delta: 11.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-01 15:46:39,841 INFO L168 Benchmark]: Boogie Procedure Inliner took 88.58 ms. Allocated memory is still 113.2 MB. Free memory was 68.0 MB in the beginning and 66.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 15:46:39,842 INFO L168 Benchmark]: Boogie Preprocessor took 62.10 ms. Allocated memory is still 113.2 MB. Free memory was 66.0 MB in the beginning and 64.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 15:46:39,842 INFO L168 Benchmark]: RCFGBuilder took 687.44 ms. Allocated memory is still 113.2 MB. Free memory was 64.5 MB in the beginning and 42.9 MB in the end (delta: 21.6 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2020-12-01 15:46:39,843 INFO L168 Benchmark]: TraceAbstraction took 7162.34 ms. Allocated memory was 113.2 MB in the beginning and 201.3 MB in the end (delta: 88.1 MB). Free memory was 42.3 MB in the beginning and 148.1 MB in the end (delta: -105.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 15:46:39,843 INFO L168 Benchmark]: Witness Printer took 61.42 ms. Allocated memory is still 201.3 MB. Free memory was 147.1 MB in the beginning and 145.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 15:46:39,847 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 79.7 MB. Free memory was 36.9 MB in the beginning and 36.9 MB in the end (delta: 37.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 857.57 ms. Allocated memory is still 113.2 MB. Free memory was 79.9 MB in the beginning and 68.0 MB in the end (delta: 11.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 88.58 ms. Allocated memory is still 113.2 MB. Free memory was 68.0 MB in the beginning and 66.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 62.10 ms. Allocated memory is still 113.2 MB. Free memory was 66.0 MB in the beginning and 64.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 687.44 ms. Allocated memory is still 113.2 MB. Free memory was 64.5 MB in the beginning and 42.9 MB in the end (delta: 21.6 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 7162.34 ms. Allocated memory was 113.2 MB in the beginning and 201.3 MB in the end (delta: 88.1 MB). Free memory was 42.3 MB in the beginning and 148.1 MB in the end (delta: -105.9 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 61.42 ms. Allocated memory is still 201.3 MB. Free memory was 147.1 MB in the beginning and 145.0 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 961 VarBasedMoverChecksPositive, 32 VarBasedMoverChecksNegative, 6 SemBasedMoverChecksPositive, 26 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 66 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 4.4s, 86 PlacesBefore, 32 PlacesAfterwards, 79 TransitionsBefore, 23 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 5 FixpointIterations, 18 TrivialSequentialCompositions, 41 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 2 ChoiceCompositions, 70 TotalNumberOfCompositions, 2779 MoverChecksTotal - PositiveResult [Line: 17]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 77 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.9s, OverallIterations: 13, TraceHistogramMax: 1, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.5s, HoareTripleCheckerStatistics: 272 SDtfs, 331 SDslu, 457 SDs, 0 SdLazy, 196 SolverSat, 55 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 66 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 13 MinimizatonAttempts, 37 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 172 NumberOfCodeBlocks, 172 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 159 ConstructedInterpolants, 0 QuantifiedInterpolants, 6866 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 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...