./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe019_tso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3e6bf6-18d4-45fb-be39-d33c85c9c4a3/bin/uautomizer-WNIpwEf4Nt/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3e6bf6-18d4-45fb-be39-d33c85c9c4a3/bin/uautomizer-WNIpwEf4Nt/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3e6bf6-18d4-45fb-be39-d33c85c9c4a3/bin/uautomizer-WNIpwEf4Nt/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3e6bf6-18d4-45fb-be39-d33c85c9c4a3/bin/uautomizer-WNIpwEf4Nt/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe019_tso.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3e6bf6-18d4-45fb-be39-d33c85c9c4a3/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3e6bf6-18d4-45fb-be39-d33c85c9c4a3/bin/uautomizer-WNIpwEf4Nt --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 94ac66895917d32482f796d3410ed655309b41e1 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 00:20:28,272 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 00:20:28,275 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 00:20:28,314 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 00:20:28,315 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 00:20:28,316 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 00:20:28,318 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 00:20:28,321 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 00:20:28,324 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 00:20:28,325 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 00:20:28,326 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 00:20:28,328 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 00:20:28,330 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 00:20:28,332 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 00:20:28,334 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 00:20:28,335 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 00:20:28,336 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 00:20:28,337 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 00:20:28,340 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 00:20:28,343 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 00:20:28,353 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 00:20:28,359 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 00:20:28,360 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 00:20:28,361 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 00:20:28,365 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 00:20:28,366 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 00:20:28,366 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 00:20:28,367 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 00:20:28,368 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 00:20:28,375 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 00:20:28,376 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 00:20:28,377 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 00:20:28,379 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 00:20:28,380 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 00:20:28,382 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 00:20:28,383 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 00:20:28,384 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 00:20:28,384 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 00:20:28,384 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 00:20:28,385 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 00:20:28,386 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 00:20:28,387 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3e6bf6-18d4-45fb-be39-d33c85c9c4a3/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-13 00:20:28,430 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 00:20:28,437 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 00:20:28,438 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 00:20:28,438 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 00:20:28,445 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 00:20:28,447 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 00:20:28,447 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 00:20:28,447 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 00:20:28,447 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 00:20:28,448 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 00:20:28,449 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 00:20:28,449 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 00:20:28,449 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 00:20:28,449 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 00:20:28,450 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 00:20:28,450 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 00:20:28,450 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 00:20:28,450 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 00:20:28,450 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 00:20:28,451 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 00:20:28,451 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 00:20:28,451 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 00:20:28,451 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 00:20:28,452 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 00:20:28,452 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 00:20:28,452 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 00:20:28,452 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-13 00:20:28,453 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 00:20:28,453 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 00:20:28,455 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 00:20:28,455 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_worker_vcloud-master_on_vcloud-master/run_dir_fc3e6bf6-18d4-45fb-be39-d33c85c9c4a3/bin/uautomizer-WNIpwEf4Nt/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3e6bf6-18d4-45fb-be39-d33c85c9c4a3/bin/uautomizer-WNIpwEf4Nt Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 94ac66895917d32482f796d3410ed655309b41e1 [2021-10-13 00:20:28,771 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 00:20:28,796 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 00:20:28,799 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 00:20:28,801 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 00:20:28,802 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 00:20:28,803 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3e6bf6-18d4-45fb-be39-d33c85c9c4a3/bin/uautomizer-WNIpwEf4Nt/../../sv-benchmarks/c/pthread-wmm/safe019_tso.opt.i [2021-10-13 00:20:28,882 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3e6bf6-18d4-45fb-be39-d33c85c9c4a3/bin/uautomizer-WNIpwEf4Nt/data/6ff425fb9/fc949fb563f24079b2eb87583ed07f84/FLAGfa04571f5 [2021-10-13 00:20:29,446 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 00:20:29,452 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3e6bf6-18d4-45fb-be39-d33c85c9c4a3/sv-benchmarks/c/pthread-wmm/safe019_tso.opt.i [2021-10-13 00:20:29,495 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3e6bf6-18d4-45fb-be39-d33c85c9c4a3/bin/uautomizer-WNIpwEf4Nt/data/6ff425fb9/fc949fb563f24079b2eb87583ed07f84/FLAGfa04571f5 [2021-10-13 00:20:29,717 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3e6bf6-18d4-45fb-be39-d33c85c9c4a3/bin/uautomizer-WNIpwEf4Nt/data/6ff425fb9/fc949fb563f24079b2eb87583ed07f84 [2021-10-13 00:20:29,719 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 00:20:29,721 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 00:20:29,722 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 00:20:29,722 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 00:20:29,738 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 00:20:29,739 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:20:29" (1/1) ... [2021-10-13 00:20:29,740 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e3817d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:20:29, skipping insertion in model container [2021-10-13 00:20:29,741 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:20:29" (1/1) ... [2021-10-13 00:20:29,748 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 00:20:29,803 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 00:20:30,007 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3e6bf6-18d4-45fb-be39-d33c85c9c4a3/sv-benchmarks/c/pthread-wmm/safe019_tso.opt.i[949,962] [2021-10-13 00:20:30,201 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:20:30,213 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 00:20:30,228 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3e6bf6-18d4-45fb-be39-d33c85c9c4a3/sv-benchmarks/c/pthread-wmm/safe019_tso.opt.i[949,962] [2021-10-13 00:20:30,289 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:20:30,345 INFO L208 MainTranslator]: Completed translation [2021-10-13 00:20:30,346 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:20:30 WrapperNode [2021-10-13 00:20:30,348 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 00:20:30,349 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 00:20:30,349 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 00:20:30,350 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 00:20:30,358 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:20:30" (1/1) ... [2021-10-13 00:20:30,396 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:20:30" (1/1) ... [2021-10-13 00:20:30,427 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 00:20:30,428 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 00:20:30,428 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 00:20:30,428 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 00:20:30,437 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:20:30" (1/1) ... [2021-10-13 00:20:30,437 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:20:30" (1/1) ... [2021-10-13 00:20:30,450 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:20:30" (1/1) ... [2021-10-13 00:20:30,452 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:20:30" (1/1) ... [2021-10-13 00:20:30,466 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:20:30" (1/1) ... [2021-10-13 00:20:30,474 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:20:30" (1/1) ... [2021-10-13 00:20:30,476 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:20:30" (1/1) ... [2021-10-13 00:20:30,485 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 00:20:30,486 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 00:20:30,486 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 00:20:30,486 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 00:20:30,487 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:20:30" (1/1) ... [2021-10-13 00:20:30,502 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 00:20:30,515 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3e6bf6-18d4-45fb-be39-d33c85c9c4a3/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:20:30,532 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3e6bf6-18d4-45fb-be39-d33c85c9c4a3/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 00:20:30,562 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3e6bf6-18d4-45fb-be39-d33c85c9c4a3/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 00:20:30,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-13 00:20:30,581 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-13 00:20:30,582 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 00:20:30,582 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 00:20:30,582 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-10-13 00:20:30,583 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-10-13 00:20:30,583 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-10-13 00:20:30,583 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-10-13 00:20:30,583 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-10-13 00:20:30,583 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-10-13 00:20:30,584 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2021-10-13 00:20:30,584 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2021-10-13 00:20:30,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 00:20:30,584 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-13 00:20:30,584 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 00:20:30,584 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 00:20:30,587 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-13 00:20:31,017 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 00:20:31,018 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-10-13 00:20:31,022 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:20:31 BoogieIcfgContainer [2021-10-13 00:20:31,023 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 00:20:31,025 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 00:20:31,025 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 00:20:31,028 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 00:20:31,029 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 12:20:29" (1/3) ... [2021-10-13 00:20:31,030 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5eefa59c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:20:31, skipping insertion in model container [2021-10-13 00:20:31,030 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:20:30" (2/3) ... [2021-10-13 00:20:31,031 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5eefa59c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:20:31, skipping insertion in model container [2021-10-13 00:20:31,031 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:20:31" (3/3) ... [2021-10-13 00:20:31,032 INFO L111 eAbstractionObserver]: Analyzing ICFG safe019_tso.opt.i [2021-10-13 00:20:31,043 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-13 00:20:31,043 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 00:20:31,043 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 00:20:31,044 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-13 00:20:31,097 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:20:31,097 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:20:31,097 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:20:31,098 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:20:31,098 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:20:31,098 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:20:31,098 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:20:31,099 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:20:31,099 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:20:31,100 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:20:31,100 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:20:31,100 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:20:31,101 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:20:31,101 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:20:31,101 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:20:31,101 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:20:31,102 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:20:31,103 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:20:31,103 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:20:31,103 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:20:31,104 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:20:31,104 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:20:31,104 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:20:31,104 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:20:31,106 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:20:31,107 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:20:31,107 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:20:31,107 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:20:31,108 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:20:31,109 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:20:31,109 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:20:31,109 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:20:31,110 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:20:31,110 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:20:31,110 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:20:31,110 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:20:31,111 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:20:31,111 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:20:31,111 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:20:31,111 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:20:31,112 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:20:31,112 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:20:31,112 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:20:31,112 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:20:31,113 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:20:31,114 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:20:31,115 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:20:31,115 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:20:31,118 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:20:31,119 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:20:31,119 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:20:31,119 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:20:31,152 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:20:31,152 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:20:31,153 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:20:31,153 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:20:31,157 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:20:31,158 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:20:31,158 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:20:31,158 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:20:31,162 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:20:31,162 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:20:31,162 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:20:31,163 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 00:20:31,173 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-10-13 00:20:31,264 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 00:20:31,273 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-13 00:20:31,274 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-10-13 00:20:31,305 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-13 00:20:31,322 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 109 places, 98 transitions, 216 flow [2021-10-13 00:20:31,325 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 109 places, 98 transitions, 216 flow [2021-10-13 00:20:31,327 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 109 places, 98 transitions, 216 flow [2021-10-13 00:20:31,383 INFO L129 PetriNetUnfolder]: 2/94 cut-off events. [2021-10-13 00:20:31,383 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-13 00:20:31,388 INFO L84 FinitePrefix]: Finished finitePrefix Result has 107 conditions, 94 events. 2/94 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/91 useless extension candidates. Maximal degree in co-relation 78. Up to 2 conditions per place. [2021-10-13 00:20:31,393 INFO L116 LiptonReduction]: Number of co-enabled transitions 2114 [2021-10-13 00:20:34,754 INFO L131 LiptonReduction]: Checked pairs total: 3767 [2021-10-13 00:20:34,754 INFO L133 LiptonReduction]: Total number of compositions: 82 [2021-10-13 00:20:34,762 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 39 places, 27 transitions, 74 flow [2021-10-13 00:20:34,830 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 706 states, 705 states have (on average 3.668085106382979) internal successors, (2586), 705 states have internal predecessors, (2586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:20:34,837 INFO L276 IsEmpty]: Start isEmpty. Operand has 706 states, 705 states have (on average 3.668085106382979) internal successors, (2586), 705 states have internal predecessors, (2586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:20:34,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-13 00:20:34,846 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:20:34,847 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:20:34,847 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 00:20:34,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:20:34,853 INFO L82 PathProgramCache]: Analyzing trace with hash -855573413, now seen corresponding path program 1 times [2021-10-13 00:20:34,862 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:20:34,863 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676305612] [2021-10-13 00:20:34,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:20:34,864 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:20:34,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:20:35,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:20:35,102 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:20:35,103 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676305612] [2021-10-13 00:20:35,104 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676305612] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:20:35,111 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:20:35,111 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 00:20:35,113 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705904095] [2021-10-13 00:20:35,126 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-13 00:20:35,128 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:20:35,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-13 00:20:35,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 00:20:35,152 INFO L87 Difference]: Start difference. First operand has 706 states, 705 states have (on average 3.668085106382979) internal successors, (2586), 705 states have internal predecessors, (2586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:20:35,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:20:35,211 INFO L93 Difference]: Finished difference Result 706 states and 2442 transitions. [2021-10-13 00:20:35,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-13 00:20:35,213 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-13 00:20:35,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:20:35,238 INFO L225 Difference]: With dead ends: 706 [2021-10-13 00:20:35,238 INFO L226 Difference]: Without dead ends: 706 [2021-10-13 00:20:35,239 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 00:20:35,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2021-10-13 00:20:35,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 706. [2021-10-13 00:20:35,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 706 states, 705 states have (on average 3.4638297872340424) internal successors, (2442), 705 states have internal predecessors, (2442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:20:35,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 2442 transitions. [2021-10-13 00:20:35,356 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 2442 transitions. Word has length 10 [2021-10-13 00:20:35,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:20:35,357 INFO L470 AbstractCegarLoop]: Abstraction has 706 states and 2442 transitions. [2021-10-13 00:20:35,357 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:20:35,358 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 2442 transitions. [2021-10-13 00:20:35,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-13 00:20:35,361 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:20:35,361 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:20:35,361 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 00:20:35,362 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 00:20:35,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:20:35,362 INFO L82 PathProgramCache]: Analyzing trace with hash -752977543, now seen corresponding path program 1 times [2021-10-13 00:20:35,363 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:20:35,363 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803305042] [2021-10-13 00:20:35,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:20:35,363 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:20:35,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:20:35,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:20:35,538 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:20:35,538 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803305042] [2021-10-13 00:20:35,538 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803305042] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:20:35,539 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:20:35,539 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 00:20:35,539 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894844213] [2021-10-13 00:20:35,540 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 00:20:35,540 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:20:35,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 00:20:35,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 00:20:35,542 INFO L87 Difference]: Start difference. First operand 706 states and 2442 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:20:35,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:20:35,601 INFO L93 Difference]: Finished difference Result 1210 states and 3960 transitions. [2021-10-13 00:20:35,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 00:20:35,602 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-13 00:20:35,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:20:35,613 INFO L225 Difference]: With dead ends: 1210 [2021-10-13 00:20:35,613 INFO L226 Difference]: Without dead ends: 952 [2021-10-13 00:20:35,614 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 34.2ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:20:35,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 952 states. [2021-10-13 00:20:35,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 952 to 820. [2021-10-13 00:20:35,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 820 states, 819 states have (on average 3.3675213675213675) internal successors, (2758), 819 states have internal predecessors, (2758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:20:35,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 820 states to 820 states and 2758 transitions. [2021-10-13 00:20:35,677 INFO L78 Accepts]: Start accepts. Automaton has 820 states and 2758 transitions. Word has length 11 [2021-10-13 00:20:35,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:20:35,678 INFO L470 AbstractCegarLoop]: Abstraction has 820 states and 2758 transitions. [2021-10-13 00:20:35,678 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:20:35,678 INFO L276 IsEmpty]: Start isEmpty. Operand 820 states and 2758 transitions. [2021-10-13 00:20:35,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-13 00:20:35,681 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:20:35,681 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:20:35,682 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-13 00:20:35,682 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 00:20:35,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:20:35,683 INFO L82 PathProgramCache]: Analyzing trace with hash 1046139535, now seen corresponding path program 1 times [2021-10-13 00:20:35,683 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:20:35,683 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298796578] [2021-10-13 00:20:35,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:20:35,684 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:20:35,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:20:35,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:20:35,806 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:20:35,806 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298796578] [2021-10-13 00:20:35,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298796578] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:20:35,807 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:20:35,807 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 00:20:35,807 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471423978] [2021-10-13 00:20:35,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 00:20:35,808 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:20:35,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 00:20:35,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:20:35,814 INFO L87 Difference]: Start difference. First operand 820 states and 2758 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:20:35,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:20:35,886 INFO L93 Difference]: Finished difference Result 1066 states and 3408 transitions. [2021-10-13 00:20:35,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 00:20:35,886 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-13 00:20:35,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:20:35,896 INFO L225 Difference]: With dead ends: 1066 [2021-10-13 00:20:35,896 INFO L226 Difference]: Without dead ends: 886 [2021-10-13 00:20:35,896 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 27.7ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-13 00:20:35,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 886 states. [2021-10-13 00:20:35,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 886 to 754. [2021-10-13 00:20:35,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 754 states, 753 states have (on average 3.309428950863214) internal successors, (2492), 753 states have internal predecessors, (2492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:20:35,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 2492 transitions. [2021-10-13 00:20:35,938 INFO L78 Accepts]: Start accepts. Automaton has 754 states and 2492 transitions. Word has length 12 [2021-10-13 00:20:35,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:20:35,938 INFO L470 AbstractCegarLoop]: Abstraction has 754 states and 2492 transitions. [2021-10-13 00:20:35,938 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:20:35,939 INFO L276 IsEmpty]: Start isEmpty. Operand 754 states and 2492 transitions. [2021-10-13 00:20:35,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-13 00:20:35,943 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:20:35,943 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:20:35,943 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-13 00:20:35,944 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 00:20:35,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:20:35,944 INFO L82 PathProgramCache]: Analyzing trace with hash 1468457750, now seen corresponding path program 1 times [2021-10-13 00:20:35,945 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:20:35,945 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805630721] [2021-10-13 00:20:35,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:20:35,945 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:20:35,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:20:36,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:20:36,065 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:20:36,065 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805630721] [2021-10-13 00:20:36,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805630721] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:20:36,065 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:20:36,066 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 00:20:36,066 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951648532] [2021-10-13 00:20:36,066 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 00:20:36,066 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:20:36,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 00:20:36,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 00:20:36,067 INFO L87 Difference]: Start difference. First operand 754 states and 2492 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:20:36,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:20:36,096 INFO L93 Difference]: Finished difference Result 808 states and 2600 transitions. [2021-10-13 00:20:36,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 00:20:36,097 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-13 00:20:36,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:20:36,104 INFO L225 Difference]: With dead ends: 808 [2021-10-13 00:20:36,105 INFO L226 Difference]: Without dead ends: 700 [2021-10-13 00:20:36,105 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.3ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:20:36,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 700 states. [2021-10-13 00:20:36,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 700 to 676. [2021-10-13 00:20:36,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 676 states, 675 states have (on average 3.268148148148148) internal successors, (2206), 675 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:20:36,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 676 states to 676 states and 2206 transitions. [2021-10-13 00:20:36,140 INFO L78 Accepts]: Start accepts. Automaton has 676 states and 2206 transitions. Word has length 12 [2021-10-13 00:20:36,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:20:36,140 INFO L470 AbstractCegarLoop]: Abstraction has 676 states and 2206 transitions. [2021-10-13 00:20:36,140 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:20:36,141 INFO L276 IsEmpty]: Start isEmpty. Operand 676 states and 2206 transitions. [2021-10-13 00:20:36,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-13 00:20:36,142 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:20:36,142 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:20:36,142 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-13 00:20:36,143 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 00:20:36,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:20:36,145 INFO L82 PathProgramCache]: Analyzing trace with hash 1406512320, now seen corresponding path program 1 times [2021-10-13 00:20:36,145 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:20:36,145 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724597619] [2021-10-13 00:20:36,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:20:36,145 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:20:36,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:20:36,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:20:36,249 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:20:36,250 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724597619] [2021-10-13 00:20:36,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724597619] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:20:36,250 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:20:36,250 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 00:20:36,250 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004952457] [2021-10-13 00:20:36,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 00:20:36,251 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:20:36,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 00:20:36,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 00:20:36,252 INFO L87 Difference]: Start difference. First operand 676 states and 2206 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:20:36,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:20:36,292 INFO L93 Difference]: Finished difference Result 739 states and 2353 transitions. [2021-10-13 00:20:36,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 00:20:36,293 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-13 00:20:36,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:20:36,299 INFO L225 Difference]: With dead ends: 739 [2021-10-13 00:20:36,300 INFO L226 Difference]: Without dead ends: 658 [2021-10-13 00:20:36,300 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.2ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:20:36,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2021-10-13 00:20:36,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 658. [2021-10-13 00:20:36,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 658 states, 657 states have (on average 3.2389649923896497) internal successors, (2128), 657 states have internal predecessors, (2128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:20:36,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 658 states and 2128 transitions. [2021-10-13 00:20:36,331 INFO L78 Accepts]: Start accepts. Automaton has 658 states and 2128 transitions. Word has length 13 [2021-10-13 00:20:36,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:20:36,331 INFO L470 AbstractCegarLoop]: Abstraction has 658 states and 2128 transitions. [2021-10-13 00:20:36,332 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:20:36,332 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states and 2128 transitions. [2021-10-13 00:20:36,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-13 00:20:36,334 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:20:36,334 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:20:36,334 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-13 00:20:36,334 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 00:20:36,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:20:36,335 INFO L82 PathProgramCache]: Analyzing trace with hash 650738880, now seen corresponding path program 1 times [2021-10-13 00:20:36,335 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:20:36,335 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134134742] [2021-10-13 00:20:36,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:20:36,336 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:20:36,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:20:36,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:20:36,383 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:20:36,383 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134134742] [2021-10-13 00:20:36,384 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134134742] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:20:36,384 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:20:36,384 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 00:20:36,384 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367779327] [2021-10-13 00:20:36,385 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 00:20:36,385 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:20:36,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 00:20:36,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:20:36,386 INFO L87 Difference]: Start difference. First operand 658 states and 2128 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:20:36,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:20:36,431 INFO L93 Difference]: Finished difference Result 940 states and 2997 transitions. [2021-10-13 00:20:36,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 00:20:36,432 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-13 00:20:36,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:20:36,437 INFO L225 Difference]: With dead ends: 940 [2021-10-13 00:20:36,437 INFO L226 Difference]: Without dead ends: 490 [2021-10-13 00:20:36,438 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 15.9ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-13 00:20:36,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2021-10-13 00:20:36,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 490. [2021-10-13 00:20:36,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 490 states, 489 states have (on average 3.198364008179959) internal successors, (1564), 489 states have internal predecessors, (1564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:20:36,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 1564 transitions. [2021-10-13 00:20:36,460 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 1564 transitions. Word has length 14 [2021-10-13 00:20:36,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:20:36,460 INFO L470 AbstractCegarLoop]: Abstraction has 490 states and 1564 transitions. [2021-10-13 00:20:36,461 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:20:36,461 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 1564 transitions. [2021-10-13 00:20:36,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-13 00:20:36,462 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:20:36,462 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:20:36,463 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-13 00:20:36,463 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 00:20:36,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:20:36,464 INFO L82 PathProgramCache]: Analyzing trace with hash 131466755, now seen corresponding path program 1 times [2021-10-13 00:20:36,464 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:20:36,464 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470813039] [2021-10-13 00:20:36,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:20:36,464 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:20:36,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:20:36,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:20:36,504 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:20:36,505 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470813039] [2021-10-13 00:20:36,505 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470813039] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:20:36,505 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:20:36,505 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 00:20:36,505 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770049916] [2021-10-13 00:20:36,506 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 00:20:36,506 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:20:36,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 00:20:36,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 00:20:36,507 INFO L87 Difference]: Start difference. First operand 490 states and 1564 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:20:36,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:20:36,534 INFO L93 Difference]: Finished difference Result 712 states and 2183 transitions. [2021-10-13 00:20:36,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 00:20:36,534 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-13 00:20:36,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:20:36,539 INFO L225 Difference]: With dead ends: 712 [2021-10-13 00:20:36,540 INFO L226 Difference]: Without dead ends: 502 [2021-10-13 00:20:36,540 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.8ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:20:36,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2021-10-13 00:20:36,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 430. [2021-10-13 00:20:36,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 430 states, 429 states have (on average 3.090909090909091) internal successors, (1326), 429 states have internal predecessors, (1326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:20:36,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 1326 transitions. [2021-10-13 00:20:36,561 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 1326 transitions. Word has length 14 [2021-10-13 00:20:36,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:20:36,561 INFO L470 AbstractCegarLoop]: Abstraction has 430 states and 1326 transitions. [2021-10-13 00:20:36,561 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:20:36,561 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 1326 transitions. [2021-10-13 00:20:36,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-13 00:20:36,563 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:20:36,563 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:20:36,563 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-13 00:20:36,564 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 00:20:36,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:20:36,564 INFO L82 PathProgramCache]: Analyzing trace with hash -1903921432, now seen corresponding path program 2 times [2021-10-13 00:20:36,564 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:20:36,565 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131707352] [2021-10-13 00:20:36,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:20:36,565 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:20:36,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:20:36,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:20:36,610 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:20:36,610 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131707352] [2021-10-13 00:20:36,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131707352] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:20:36,610 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:20:36,611 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 00:20:36,611 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337921492] [2021-10-13 00:20:36,611 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 00:20:36,611 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:20:36,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 00:20:36,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:20:36,612 INFO L87 Difference]: Start difference. First operand 430 states and 1326 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:20:36,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:20:36,653 INFO L93 Difference]: Finished difference Result 616 states and 1839 transitions. [2021-10-13 00:20:36,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 00:20:36,659 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-13 00:20:36,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:20:36,662 INFO L225 Difference]: With dead ends: 616 [2021-10-13 00:20:36,662 INFO L226 Difference]: Without dead ends: 310 [2021-10-13 00:20:36,663 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 21.1ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-13 00:20:36,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2021-10-13 00:20:36,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 310. [2021-10-13 00:20:36,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310 states, 309 states have (on average 2.896440129449838) internal successors, (895), 309 states have internal predecessors, (895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:20:36,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 895 transitions. [2021-10-13 00:20:36,675 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 895 transitions. Word has length 14 [2021-10-13 00:20:36,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:20:36,675 INFO L470 AbstractCegarLoop]: Abstraction has 310 states and 895 transitions. [2021-10-13 00:20:36,675 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:20:36,676 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 895 transitions. [2021-10-13 00:20:36,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-13 00:20:36,677 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:20:36,677 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:20:36,677 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-13 00:20:36,677 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 00:20:36,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:20:36,678 INFO L82 PathProgramCache]: Analyzing trace with hash 466133286, now seen corresponding path program 1 times [2021-10-13 00:20:36,678 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:20:36,678 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172734687] [2021-10-13 00:20:36,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:20:36,679 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:20:36,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:20:36,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:20:36,735 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:20:36,736 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172734687] [2021-10-13 00:20:36,736 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172734687] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:20:36,736 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:20:36,736 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 00:20:36,736 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518509086] [2021-10-13 00:20:36,737 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 00:20:36,737 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:20:36,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 00:20:36,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 00:20:36,738 INFO L87 Difference]: Start difference. First operand 310 states and 895 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:20:36,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:20:36,770 INFO L93 Difference]: Finished difference Result 377 states and 1011 transitions. [2021-10-13 00:20:36,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 00:20:36,771 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-13 00:20:36,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:20:36,774 INFO L225 Difference]: With dead ends: 377 [2021-10-13 00:20:36,774 INFO L226 Difference]: Without dead ends: 284 [2021-10-13 00:20:36,774 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.1ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:20:36,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2021-10-13 00:20:36,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 284. [2021-10-13 00:20:36,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 283 states have (on average 2.7385159010600706) internal successors, (775), 283 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:20:36,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 775 transitions. [2021-10-13 00:20:36,786 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 775 transitions. Word has length 15 [2021-10-13 00:20:36,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:20:36,787 INFO L470 AbstractCegarLoop]: Abstraction has 284 states and 775 transitions. [2021-10-13 00:20:36,787 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:20:36,787 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 775 transitions. [2021-10-13 00:20:36,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-13 00:20:36,788 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:20:36,788 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:20:36,788 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-13 00:20:36,789 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 00:20:36,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:20:36,789 INFO L82 PathProgramCache]: Analyzing trace with hash 2068885176, now seen corresponding path program 1 times [2021-10-13 00:20:36,789 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:20:36,790 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524175974] [2021-10-13 00:20:36,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:20:36,790 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:20:36,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:20:36,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:20:36,841 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:20:36,841 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524175974] [2021-10-13 00:20:36,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524175974] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:20:36,842 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:20:36,842 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 00:20:36,842 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761350452] [2021-10-13 00:20:36,843 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 00:20:36,843 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:20:36,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 00:20:36,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:20:36,844 INFO L87 Difference]: Start difference. First operand 284 states and 775 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:20:36,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:20:36,880 INFO L93 Difference]: Finished difference Result 298 states and 737 transitions. [2021-10-13 00:20:36,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 00:20:36,881 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-13 00:20:36,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:20:36,883 INFO L225 Difference]: With dead ends: 298 [2021-10-13 00:20:36,883 INFO L226 Difference]: Without dead ends: 223 [2021-10-13 00:20:36,884 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 13.7ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-13 00:20:36,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2021-10-13 00:20:36,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 223. [2021-10-13 00:20:36,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 222 states have (on average 2.4504504504504503) internal successors, (544), 222 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:20:36,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 544 transitions. [2021-10-13 00:20:36,893 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 544 transitions. Word has length 16 [2021-10-13 00:20:36,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:20:36,893 INFO L470 AbstractCegarLoop]: Abstraction has 223 states and 544 transitions. [2021-10-13 00:20:36,893 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:20:36,893 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 544 transitions. [2021-10-13 00:20:36,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-13 00:20:36,894 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:20:36,894 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:20:36,895 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-13 00:20:36,895 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 00:20:36,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:20:36,895 INFO L82 PathProgramCache]: Analyzing trace with hash -289436797, now seen corresponding path program 1 times [2021-10-13 00:20:36,896 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:20:36,896 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032283684] [2021-10-13 00:20:36,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:20:36,896 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:20:36,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:20:36,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:20:36,951 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:20:36,952 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032283684] [2021-10-13 00:20:36,952 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032283684] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:20:36,952 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:20:36,952 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-13 00:20:36,952 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139317835] [2021-10-13 00:20:36,953 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 00:20:36,953 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:20:36,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 00:20:36,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-13 00:20:36,954 INFO L87 Difference]: Start difference. First operand 223 states and 544 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:20:36,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:20:36,999 INFO L93 Difference]: Finished difference Result 207 states and 474 transitions. [2021-10-13 00:20:36,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 00:20:37,000 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-13 00:20:37,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:20:37,002 INFO L225 Difference]: With dead ends: 207 [2021-10-13 00:20:37,002 INFO L226 Difference]: Without dead ends: 169 [2021-10-13 00:20:37,002 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 17.9ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-10-13 00:20:37,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2021-10-13 00:20:37,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2021-10-13 00:20:37,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 168 states have (on average 2.3095238095238093) internal successors, (388), 168 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:20:37,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 388 transitions. [2021-10-13 00:20:37,009 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 388 transitions. Word has length 17 [2021-10-13 00:20:37,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:20:37,010 INFO L470 AbstractCegarLoop]: Abstraction has 169 states and 388 transitions. [2021-10-13 00:20:37,010 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:20:37,010 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 388 transitions. [2021-10-13 00:20:37,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-13 00:20:37,011 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:20:37,011 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:20:37,012 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-13 00:20:37,012 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 00:20:37,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:20:37,012 INFO L82 PathProgramCache]: Analyzing trace with hash -2098220685, now seen corresponding path program 1 times [2021-10-13 00:20:37,013 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:20:37,013 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338577935] [2021-10-13 00:20:37,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:20:37,013 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:20:37,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:20:37,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:20:37,075 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:20:37,075 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338577935] [2021-10-13 00:20:37,075 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338577935] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:20:37,075 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:20:37,075 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-13 00:20:37,076 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998138339] [2021-10-13 00:20:37,076 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 00:20:37,076 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:20:37,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 00:20:37,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 00:20:37,077 INFO L87 Difference]: Start difference. First operand 169 states and 388 transitions. Second operand has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:20:37,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:20:37,108 INFO L93 Difference]: Finished difference Result 209 states and 466 transitions. [2021-10-13 00:20:37,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 00:20:37,109 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-13 00:20:37,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:20:37,110 INFO L225 Difference]: With dead ends: 209 [2021-10-13 00:20:37,111 INFO L226 Difference]: Without dead ends: 136 [2021-10-13 00:20:37,111 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 23.9ms TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-10-13 00:20:37,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2021-10-13 00:20:37,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 132. [2021-10-13 00:20:37,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 131 states have (on average 2.122137404580153) internal successors, (278), 131 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:20:37,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 278 transitions. [2021-10-13 00:20:37,116 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 278 transitions. Word has length 19 [2021-10-13 00:20:37,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:20:37,117 INFO L470 AbstractCegarLoop]: Abstraction has 132 states and 278 transitions. [2021-10-13 00:20:37,117 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:20:37,117 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 278 transitions. [2021-10-13 00:20:37,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-13 00:20:37,118 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:20:37,118 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:20:37,118 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-10-13 00:20:37,119 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 00:20:37,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:20:37,119 INFO L82 PathProgramCache]: Analyzing trace with hash -142225233, now seen corresponding path program 2 times [2021-10-13 00:20:37,120 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:20:37,120 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053076166] [2021-10-13 00:20:37,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:20:37,120 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:20:37,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:20:37,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:20:37,202 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:20:37,202 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053076166] [2021-10-13 00:20:37,202 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053076166] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:20:37,203 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:20:37,203 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-13 00:20:37,203 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37898678] [2021-10-13 00:20:37,204 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 00:20:37,204 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:20:37,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 00:20:37,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-13 00:20:37,205 INFO L87 Difference]: Start difference. First operand 132 states and 278 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:20:37,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:20:37,273 INFO L93 Difference]: Finished difference Result 121 states and 254 transitions. [2021-10-13 00:20:37,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 00:20:37,274 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-13 00:20:37,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:20:37,275 INFO L225 Difference]: With dead ends: 121 [2021-10-13 00:20:37,275 INFO L226 Difference]: Without dead ends: 72 [2021-10-13 00:20:37,275 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 23.0ms TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-10-13 00:20:37,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-10-13 00:20:37,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2021-10-13 00:20:37,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 2.028169014084507) internal successors, (144), 71 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:20:37,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 144 transitions. [2021-10-13 00:20:37,279 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 144 transitions. Word has length 19 [2021-10-13 00:20:37,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:20:37,279 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 144 transitions. [2021-10-13 00:20:37,279 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:20:37,280 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 144 transitions. [2021-10-13 00:20:37,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-13 00:20:37,280 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:20:37,281 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:20:37,281 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-10-13 00:20:37,281 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 00:20:37,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:20:37,282 INFO L82 PathProgramCache]: Analyzing trace with hash -1685666813, now seen corresponding path program 1 times [2021-10-13 00:20:37,282 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:20:37,282 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643161339] [2021-10-13 00:20:37,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:20:37,282 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:20:37,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:20:37,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:20:37,369 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:20:37,369 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643161339] [2021-10-13 00:20:37,369 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643161339] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:20:37,369 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:20:37,370 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 00:20:37,371 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925109722] [2021-10-13 00:20:37,371 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 00:20:37,371 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:20:37,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 00:20:37,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:20:37,372 INFO L87 Difference]: Start difference. First operand 72 states and 144 transitions. Second operand has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:20:37,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:20:37,408 INFO L93 Difference]: Finished difference Result 71 states and 143 transitions. [2021-10-13 00:20:37,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 00:20:37,408 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-13 00:20:37,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:20:37,409 INFO L225 Difference]: With dead ends: 71 [2021-10-13 00:20:37,409 INFO L226 Difference]: Without dead ends: 0 [2021-10-13 00:20:37,410 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 34.3ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-13 00:20:37,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-13 00:20:37,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-13 00:20:37,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:20:37,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-13 00:20:37,411 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2021-10-13 00:20:37,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:20:37,411 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 00:20:37,411 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:20:37,412 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-13 00:20:37,412 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-13 00:20:37,414 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 00:20:37,415 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-13 00:20:37,415 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-13 00:20:37,415 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-13 00:20:37,415 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATION [2021-10-13 00:20:37,416 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-10-13 00:20:37,420 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-13 00:20:37,420 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 00:20:37,423 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 12:20:37 BasicIcfg [2021-10-13 00:20:37,423 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 00:20:37,424 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 00:20:37,425 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 00:20:37,425 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 00:20:37,425 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:20:31" (3/4) ... [2021-10-13 00:20:37,428 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-13 00:20:37,435 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2021-10-13 00:20:37,435 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2021-10-13 00:20:37,435 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2021-10-13 00:20:37,436 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P3 [2021-10-13 00:20:37,443 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2021-10-13 00:20:37,443 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-13 00:20:37,443 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 00:20:37,444 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 00:20:37,492 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3e6bf6-18d4-45fb-be39-d33c85c9c4a3/bin/uautomizer-WNIpwEf4Nt/witness.graphml [2021-10-13 00:20:37,492 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 00:20:37,495 INFO L168 Benchmark]: Toolchain (without parser) took 7772.36 ms. Allocated memory was 92.3 MB in the beginning and 136.3 MB in the end (delta: 44.0 MB). Free memory was 70.4 MB in the beginning and 82.8 MB in the end (delta: -12.4 MB). Peak memory consumption was 30.9 MB. Max. memory is 16.1 GB. [2021-10-13 00:20:37,495 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 92.3 MB. Free memory is still 68.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:20:37,496 INFO L168 Benchmark]: CACSL2BoogieTranslator took 626.51 ms. Allocated memory is still 92.3 MB. Free memory was 70.2 MB in the beginning and 58.0 MB in the end (delta: 12.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-13 00:20:37,497 INFO L168 Benchmark]: Boogie Procedure Inliner took 77.98 ms. Allocated memory is still 92.3 MB. Free memory was 58.0 MB in the beginning and 55.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 00:20:37,498 INFO L168 Benchmark]: Boogie Preprocessor took 57.41 ms. Allocated memory is still 92.3 MB. Free memory was 55.8 MB in the beginning and 54.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 00:20:37,498 INFO L168 Benchmark]: RCFGBuilder took 536.83 ms. Allocated memory is still 92.3 MB. Free memory was 54.5 MB in the beginning and 41.9 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-13 00:20:37,499 INFO L168 Benchmark]: TraceAbstraction took 6398.86 ms. Allocated memory was 92.3 MB in the beginning and 136.3 MB in the end (delta: 44.0 MB). Free memory was 41.3 MB in the beginning and 85.9 MB in the end (delta: -44.7 MB). Peak memory consumption was 1.3 MB. Max. memory is 16.1 GB. [2021-10-13 00:20:37,501 INFO L168 Benchmark]: Witness Printer took 68.14 ms. Allocated memory is still 136.3 MB. Free memory was 85.9 MB in the beginning and 82.8 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 00:20:37,503 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 92.3 MB. Free memory is still 68.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 626.51 ms. Allocated memory is still 92.3 MB. Free memory was 70.2 MB in the beginning and 58.0 MB in the end (delta: 12.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 77.98 ms. Allocated memory is still 92.3 MB. Free memory was 58.0 MB in the beginning and 55.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 57.41 ms. Allocated memory is still 92.3 MB. Free memory was 55.8 MB in the beginning and 54.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 536.83 ms. Allocated memory is still 92.3 MB. Free memory was 54.5 MB in the beginning and 41.9 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6398.86 ms. Allocated memory was 92.3 MB in the beginning and 136.3 MB in the end (delta: 44.0 MB). Free memory was 41.3 MB in the beginning and 85.9 MB in the end (delta: -44.7 MB). Peak memory consumption was 1.3 MB. Max. memory is 16.1 GB. * Witness Printer took 68.14 ms. Allocated memory is still 136.3 MB. Free memory was 85.9 MB in the beginning and 82.8 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3429.6ms, 109 PlacesBefore, 39 PlacesAfterwards, 98 TransitionsBefore, 27 TransitionsAfterwards, 2114 CoEnabledTransitionPairs, 6 FixpointIterations, 20 TrivialSequentialCompositions, 53 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 82 TotalNumberOfCompositions, 3767 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2379, positive: 2284, positive conditional: 0, positive unconditional: 2284, negative: 95, negative conditional: 0, negative unconditional: 95, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1544, positive: 1507, positive conditional: 0, positive unconditional: 1507, negative: 37, negative conditional: 0, negative unconditional: 37, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1544, positive: 1492, positive conditional: 0, positive unconditional: 1492, negative: 52, negative conditional: 0, negative unconditional: 52, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 52, positive: 15, positive conditional: 0, positive unconditional: 15, negative: 37, negative conditional: 0, negative unconditional: 37, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 133, positive: 48, positive conditional: 0, positive unconditional: 48, negative: 85, negative conditional: 0, negative unconditional: 85, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 2379, positive: 777, positive conditional: 0, positive unconditional: 777, negative: 58, negative conditional: 0, negative unconditional: 58, unknown: 1544, unknown conditional: 0, unknown unconditional: 1544] , Statistics on independence cache: Total cache size (in pairs): 113, Positive cache size: 98, Positive conditional cache size: 0, Positive unconditional cache size: 98, Negative cache size: 15, Negative conditional cache size: 0, Negative unconditional cache size: 15 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 127 locations, 5 error locations. Started 1 CEGAR loops. OverallTime: 6156.4ms, OverallIterations: 14, TraceHistogramMax: 1, EmptinessCheckTime: 37.7ms, AutomataDifference: 770.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 3556.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 371 SDtfs, 451 SDslu, 622 SDs, 0 SdLazy, 255 SolverSat, 64 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 240.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 69 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 250.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=820occurred in iteration=2, InterpolantAutomatonStates: 79, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 361.9ms AutomataMinimizationTime, 14 MinimizatonAttempts, 364 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 46.9ms SsaConstructionTime, 251.8ms SatisfiabilityAnalysisTime, 840.0ms InterpolantComputationTime, 207 NumberOfCodeBlocks, 207 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 193 ConstructedInterpolants, 0 QuantifiedInterpolants, 878 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-13 00:20:37,545 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc3e6bf6-18d4-45fb-be39-d33c85c9c4a3/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...