./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe025_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_dcf50071-4d82-466f-bf96-ef0d11c3c7b0/bin/uautomizer-WNIpwEf4Nt/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcf50071-4d82-466f-bf96-ef0d11c3c7b0/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_dcf50071-4d82-466f-bf96-ef0d11c3c7b0/bin/uautomizer-WNIpwEf4Nt/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcf50071-4d82-466f-bf96-ef0d11c3c7b0/bin/uautomizer-WNIpwEf4Nt/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe025_tso.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcf50071-4d82-466f-bf96-ef0d11c3c7b0/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_dcf50071-4d82-466f-bf96-ef0d11c3c7b0/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 2cb0904590711f61fe562550478334c4bfa7ca51 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 01:05:34,468 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 01:05:34,471 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 01:05:34,525 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 01:05:34,526 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 01:05:34,530 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 01:05:34,532 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 01:05:34,536 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 01:05:34,539 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 01:05:34,544 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 01:05:34,546 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 01:05:34,548 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 01:05:34,548 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 01:05:34,551 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 01:05:34,553 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 01:05:34,561 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 01:05:34,563 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 01:05:34,565 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 01:05:34,567 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 01:05:34,576 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 01:05:34,578 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 01:05:34,579 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 01:05:34,583 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 01:05:34,584 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 01:05:34,594 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 01:05:34,594 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 01:05:34,595 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 01:05:34,597 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 01:05:34,598 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 01:05:34,600 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 01:05:34,600 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 01:05:34,601 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 01:05:34,603 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 01:05:34,605 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 01:05:34,607 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 01:05:34,607 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 01:05:34,608 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 01:05:34,608 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 01:05:34,608 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 01:05:34,609 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 01:05:34,610 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 01:05:34,611 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcf50071-4d82-466f-bf96-ef0d11c3c7b0/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-13 01:05:34,654 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 01:05:34,655 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 01:05:34,655 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 01:05:34,656 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 01:05:34,657 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 01:05:34,657 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 01:05:34,658 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 01:05:34,658 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 01:05:34,658 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 01:05:34,658 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 01:05:34,659 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 01:05:34,660 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 01:05:34,660 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 01:05:34,660 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 01:05:34,661 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 01:05:34,661 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 01:05:34,661 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 01:05:34,661 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 01:05:34,662 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 01:05:34,662 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 01:05:34,662 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 01:05:34,662 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 01:05:34,663 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 01:05:34,663 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 01:05:34,663 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 01:05:34,663 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 01:05:34,664 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-13 01:05:34,664 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 01:05:34,664 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 01:05:34,666 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 01:05:34,666 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_dcf50071-4d82-466f-bf96-ef0d11c3c7b0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcf50071-4d82-466f-bf96-ef0d11c3c7b0/bin/uautomizer-WNIpwEf4Nt Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2cb0904590711f61fe562550478334c4bfa7ca51 [2021-10-13 01:05:34,906 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 01:05:34,940 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 01:05:34,944 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 01:05:34,946 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 01:05:34,947 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 01:05:34,948 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcf50071-4d82-466f-bf96-ef0d11c3c7b0/bin/uautomizer-WNIpwEf4Nt/../../sv-benchmarks/c/pthread-wmm/safe025_tso.opt.i [2021-10-13 01:05:35,022 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcf50071-4d82-466f-bf96-ef0d11c3c7b0/bin/uautomizer-WNIpwEf4Nt/data/5aba34eb4/000b101b4c3a40ae8a56752baf675bd1/FLAG25b473f2e [2021-10-13 01:05:35,615 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 01:05:35,619 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcf50071-4d82-466f-bf96-ef0d11c3c7b0/sv-benchmarks/c/pthread-wmm/safe025_tso.opt.i [2021-10-13 01:05:35,642 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcf50071-4d82-466f-bf96-ef0d11c3c7b0/bin/uautomizer-WNIpwEf4Nt/data/5aba34eb4/000b101b4c3a40ae8a56752baf675bd1/FLAG25b473f2e [2021-10-13 01:05:35,919 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcf50071-4d82-466f-bf96-ef0d11c3c7b0/bin/uautomizer-WNIpwEf4Nt/data/5aba34eb4/000b101b4c3a40ae8a56752baf675bd1 [2021-10-13 01:05:35,922 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 01:05:35,923 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 01:05:35,925 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 01:05:35,925 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 01:05:35,929 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 01:05:35,930 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:05:35" (1/1) ... [2021-10-13 01:05:35,931 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59dc0cab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:05:35, skipping insertion in model container [2021-10-13 01:05:35,931 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:05:35" (1/1) ... [2021-10-13 01:05:35,938 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 01:05:35,978 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 01:05:36,158 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_dcf50071-4d82-466f-bf96-ef0d11c3c7b0/sv-benchmarks/c/pthread-wmm/safe025_tso.opt.i[949,962] [2021-10-13 01:05:36,322 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 01:05:36,335 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 01:05:36,351 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_dcf50071-4d82-466f-bf96-ef0d11c3c7b0/sv-benchmarks/c/pthread-wmm/safe025_tso.opt.i[949,962] [2021-10-13 01:05:36,404 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 01:05:36,441 INFO L208 MainTranslator]: Completed translation [2021-10-13 01:05:36,442 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:05:36 WrapperNode [2021-10-13 01:05:36,442 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 01:05:36,443 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 01:05:36,443 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 01:05:36,444 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 01:05:36,451 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:05:36" (1/1) ... [2021-10-13 01:05:36,465 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:05:36" (1/1) ... [2021-10-13 01:05:36,486 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 01:05:36,487 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 01:05:36,487 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 01:05:36,487 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 01:05:36,495 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:05:36" (1/1) ... [2021-10-13 01:05:36,496 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:05:36" (1/1) ... [2021-10-13 01:05:36,499 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:05:36" (1/1) ... [2021-10-13 01:05:36,499 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:05:36" (1/1) ... [2021-10-13 01:05:36,505 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:05:36" (1/1) ... [2021-10-13 01:05:36,507 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:05:36" (1/1) ... [2021-10-13 01:05:36,509 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:05:36" (1/1) ... [2021-10-13 01:05:36,512 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 01:05:36,513 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 01:05:36,513 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 01:05:36,513 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 01:05:36,514 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:05:36" (1/1) ... [2021-10-13 01:05:36,533 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 01:05:36,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcf50071-4d82-466f-bf96-ef0d11c3c7b0/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:05:36,562 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcf50071-4d82-466f-bf96-ef0d11c3c7b0/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 01:05:36,578 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcf50071-4d82-466f-bf96-ef0d11c3c7b0/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 01:05:36,612 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-13 01:05:36,613 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-13 01:05:36,614 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 01:05:36,614 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 01:05:36,614 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-10-13 01:05:36,614 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-10-13 01:05:36,614 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-10-13 01:05:36,614 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-10-13 01:05:36,615 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-10-13 01:05:36,615 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-10-13 01:05:36,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 01:05:36,615 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-13 01:05:36,615 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 01:05:36,615 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 01:05:36,617 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 01:05:37,003 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 01:05:37,003 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-10-13 01:05:37,006 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:05:37 BoogieIcfgContainer [2021-10-13 01:05:37,006 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 01:05:37,008 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 01:05:37,008 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 01:05:37,012 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 01:05:37,012 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 01:05:35" (1/3) ... [2021-10-13 01:05:37,013 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bb78d3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:05:37, skipping insertion in model container [2021-10-13 01:05:37,013 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:05:36" (2/3) ... [2021-10-13 01:05:37,014 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bb78d3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:05:37, skipping insertion in model container [2021-10-13 01:05:37,014 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:05:37" (3/3) ... [2021-10-13 01:05:37,016 INFO L111 eAbstractionObserver]: Analyzing ICFG safe025_tso.opt.i [2021-10-13 01:05:37,022 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-13 01:05:37,022 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 01:05:37,022 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 01:05:37,023 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-13 01:05:37,053 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 01:05:37,053 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 01:05:37,054 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 01:05:37,054 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 01:05:37,054 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 01:05:37,054 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 01:05:37,055 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 01:05:37,055 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 01:05:37,055 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 01:05:37,056 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 01:05:37,056 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 01:05:37,056 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 01:05:37,057 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 01:05:37,057 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 01:05:37,057 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 01:05:37,057 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 01:05:37,057 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 01:05:37,058 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 01:05:37,058 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 01:05:37,058 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 01:05:37,059 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 01:05:37,059 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 01:05:37,059 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 01:05:37,059 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 01:05:37,060 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 01:05:37,060 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 01:05:37,060 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 01:05:37,061 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 01:05:37,061 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 01:05:37,061 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 01:05:37,061 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 01:05:37,061 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 01:05:37,062 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 01:05:37,062 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 01:05:37,062 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 01:05:37,063 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 01:05:37,066 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 01:05:37,067 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 01:05:37,067 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 01:05:37,067 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 01:05:37,072 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 01:05:37,073 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 01:05:37,073 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 01:05:37,073 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 01:05:37,076 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 01:05:37,076 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 01:05:37,077 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 01:05:37,077 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 01:05:37,079 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-10-13 01:05:37,124 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 01:05:37,131 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 01:05:37,131 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-10-13 01:05:37,146 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-13 01:05:37,158 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 92 places, 84 transitions, 183 flow [2021-10-13 01:05:37,162 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 92 places, 84 transitions, 183 flow [2021-10-13 01:05:37,164 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 92 places, 84 transitions, 183 flow [2021-10-13 01:05:37,209 INFO L129 PetriNetUnfolder]: 2/81 cut-off events. [2021-10-13 01:05:37,210 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-13 01:05:37,213 INFO L84 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 81 events. 2/81 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 47 event pairs, 0 based on Foata normal form. 0/78 useless extension candidates. Maximal degree in co-relation 63. Up to 2 conditions per place. [2021-10-13 01:05:37,217 INFO L116 LiptonReduction]: Number of co-enabled transitions 1440 [2021-10-13 01:05:40,344 INFO L131 LiptonReduction]: Checked pairs total: 2476 [2021-10-13 01:05:40,344 INFO L133 LiptonReduction]: Total number of compositions: 73 [2021-10-13 01:05:40,352 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 21 transitions, 57 flow [2021-10-13 01:05:40,380 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 234 states, 233 states have (on average 2.815450643776824) internal successors, (656), 233 states have internal predecessors, (656), 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 01:05:40,383 INFO L276 IsEmpty]: Start isEmpty. Operand has 234 states, 233 states have (on average 2.815450643776824) internal successors, (656), 233 states have internal predecessors, (656), 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 01:05:40,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-13 01:05:40,389 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:05:40,390 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:05:40,390 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-13 01:05:40,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:05:40,396 INFO L82 PathProgramCache]: Analyzing trace with hash -892154175, now seen corresponding path program 1 times [2021-10-13 01:05:40,405 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:05:40,405 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191179261] [2021-10-13 01:05:40,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:05:40,406 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:05:40,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:05:40,682 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 01:05:40,683 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:05:40,683 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191179261] [2021-10-13 01:05:40,684 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191179261] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 01:05:40,685 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:05:40,685 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-13 01:05:40,686 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539560068] [2021-10-13 01:05:40,695 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 01:05:40,696 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:05:40,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 01:05:40,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 01:05:40,713 INFO L87 Difference]: Start difference. First operand has 234 states, 233 states have (on average 2.815450643776824) internal successors, (656), 233 states have internal predecessors, (656), 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 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 01:05:40,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:05:40,765 INFO L93 Difference]: Finished difference Result 218 states and 600 transitions. [2021-10-13 01:05:40,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 01:05:40,767 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 8 [2021-10-13 01:05:40,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:05:40,788 INFO L225 Difference]: With dead ends: 218 [2021-10-13 01:05:40,789 INFO L226 Difference]: Without dead ends: 218 [2021-10-13 01:05:40,790 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 01:05:40,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2021-10-13 01:05:40,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2021-10-13 01:05:40,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 217 states have (on average 2.7649769585253456) internal successors, (600), 217 states have internal predecessors, (600), 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 01:05:40,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2021-10-13 01:05:40,855 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2021-10-13 01:05:40,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:05:40,856 INFO L470 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2021-10-13 01:05:40,857 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 01:05:40,857 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2021-10-13 01:05:40,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-13 01:05:40,858 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:05:40,859 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:05:40,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 01:05:40,859 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-13 01:05:40,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:05:40,860 INFO L82 PathProgramCache]: Analyzing trace with hash -1887028520, now seen corresponding path program 1 times [2021-10-13 01:05:40,860 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:05:40,861 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274942949] [2021-10-13 01:05:40,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:05:40,861 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:05:40,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:05:41,002 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 01:05:41,002 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:05:41,002 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274942949] [2021-10-13 01:05:41,002 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274942949] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 01:05:41,003 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:05:41,003 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 01:05:41,003 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775547094] [2021-10-13 01:05:41,004 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 01:05:41,004 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:05:41,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 01:05:41,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 01:05:41,005 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 01:05:41,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:05:41,049 INFO L93 Difference]: Finished difference Result 284 states and 746 transitions. [2021-10-13 01:05:41,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 01:05:41,049 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 9 [2021-10-13 01:05:41,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:05:41,053 INFO L225 Difference]: With dead ends: 284 [2021-10-13 01:05:41,054 INFO L226 Difference]: Without dead ends: 268 [2021-10-13 01:05:41,055 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 36.9ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 01:05:41,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2021-10-13 01:05:41,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 238. [2021-10-13 01:05:41,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 237 states have (on average 2.7046413502109705) internal successors, (641), 237 states have internal predecessors, (641), 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 01:05:41,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 641 transitions. [2021-10-13 01:05:41,090 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 641 transitions. Word has length 9 [2021-10-13 01:05:41,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:05:41,091 INFO L470 AbstractCegarLoop]: Abstraction has 238 states and 641 transitions. [2021-10-13 01:05:41,091 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 01:05:41,091 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 641 transitions. [2021-10-13 01:05:41,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-13 01:05:41,095 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:05:41,095 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:05:41,095 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-13 01:05:41,096 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-13 01:05:41,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:05:41,097 INFO L82 PathProgramCache]: Analyzing trace with hash 1631617646, now seen corresponding path program 1 times [2021-10-13 01:05:41,097 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:05:41,097 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240647721] [2021-10-13 01:05:41,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:05:41,099 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:05:41,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:05:41,182 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 01:05:41,182 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:05:41,182 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240647721] [2021-10-13 01:05:41,183 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240647721] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 01:05:41,183 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:05:41,183 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 01:05:41,184 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047607050] [2021-10-13 01:05:41,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 01:05:41,184 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:05:41,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 01:05:41,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 01:05:41,188 INFO L87 Difference]: Start difference. First operand 238 states and 641 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 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 01:05:41,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:05:41,225 INFO L93 Difference]: Finished difference Result 266 states and 688 transitions. [2021-10-13 01:05:41,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 01:05:41,226 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 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 01:05:41,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:05:41,231 INFO L225 Difference]: With dead ends: 266 [2021-10-13 01:05:41,232 INFO L226 Difference]: Without dead ends: 266 [2021-10-13 01:05:41,232 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.2ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 01:05:41,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2021-10-13 01:05:41,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 202. [2021-10-13 01:05:41,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 201 states have (on average 2.63681592039801) internal successors, (530), 201 states have internal predecessors, (530), 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 01:05:41,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 530 transitions. [2021-10-13 01:05:41,261 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 530 transitions. Word has length 10 [2021-10-13 01:05:41,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:05:41,261 INFO L470 AbstractCegarLoop]: Abstraction has 202 states and 530 transitions. [2021-10-13 01:05:41,261 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 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 01:05:41,262 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 530 transitions. [2021-10-13 01:05:41,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-13 01:05:41,269 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:05:41,269 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:05:41,269 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-13 01:05:41,270 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-13 01:05:41,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:05:41,270 INFO L82 PathProgramCache]: Analyzing trace with hash -947911244, now seen corresponding path program 1 times [2021-10-13 01:05:41,271 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:05:41,271 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785544361] [2021-10-13 01:05:41,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:05:41,271 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:05:41,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:05:41,391 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 01:05:41,391 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:05:41,391 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785544361] [2021-10-13 01:05:41,392 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785544361] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 01:05:41,392 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:05:41,392 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 01:05:41,392 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28261363] [2021-10-13 01:05:41,393 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 01:05:41,393 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:05:41,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 01:05:41,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 01:05:41,394 INFO L87 Difference]: Start difference. First operand 202 states and 530 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 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 01:05:41,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:05:41,420 INFO L93 Difference]: Finished difference Result 306 states and 780 transitions. [2021-10-13 01:05:41,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 01:05:41,421 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 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 01:05:41,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:05:41,423 INFO L225 Difference]: With dead ends: 306 [2021-10-13 01:05:41,423 INFO L226 Difference]: Without dead ends: 202 [2021-10-13 01:05:41,424 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.1ms TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-10-13 01:05:41,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2021-10-13 01:05:41,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 178. [2021-10-13 01:05:41,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 177 states have (on average 2.553672316384181) internal successors, (452), 177 states have internal predecessors, (452), 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 01:05:41,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 452 transitions. [2021-10-13 01:05:41,434 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 452 transitions. Word has length 11 [2021-10-13 01:05:41,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:05:41,435 INFO L470 AbstractCegarLoop]: Abstraction has 178 states and 452 transitions. [2021-10-13 01:05:41,435 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 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 01:05:41,435 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 452 transitions. [2021-10-13 01:05:41,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-13 01:05:41,436 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:05:41,436 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:05:41,436 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-13 01:05:41,437 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-13 01:05:41,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:05:41,437 INFO L82 PathProgramCache]: Analyzing trace with hash -959529734, now seen corresponding path program 2 times [2021-10-13 01:05:41,438 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:05:41,438 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326660778] [2021-10-13 01:05:41,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:05:41,438 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:05:41,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:05:41,550 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 01:05:41,550 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:05:41,550 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326660778] [2021-10-13 01:05:41,550 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326660778] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 01:05:41,551 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:05:41,551 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 01:05:41,551 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458641391] [2021-10-13 01:05:41,552 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 01:05:41,552 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:05:41,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 01:05:41,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 01:05:41,553 INFO L87 Difference]: Start difference. First operand 178 states and 452 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 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 01:05:41,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:05:41,593 INFO L93 Difference]: Finished difference Result 262 states and 636 transitions. [2021-10-13 01:05:41,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 01:05:41,594 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 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 01:05:41,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:05:41,596 INFO L225 Difference]: With dead ends: 262 [2021-10-13 01:05:41,597 INFO L226 Difference]: Without dead ends: 182 [2021-10-13 01:05:41,597 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.1ms TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-10-13 01:05:41,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2021-10-13 01:05:41,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 154. [2021-10-13 01:05:41,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 153 states have (on average 2.4444444444444446) internal successors, (374), 153 states have internal predecessors, (374), 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 01:05:41,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 374 transitions. [2021-10-13 01:05:41,608 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 374 transitions. Word has length 11 [2021-10-13 01:05:41,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:05:41,608 INFO L470 AbstractCegarLoop]: Abstraction has 154 states and 374 transitions. [2021-10-13 01:05:41,608 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 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 01:05:41,609 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 374 transitions. [2021-10-13 01:05:41,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-13 01:05:41,610 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:05:41,610 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:05:41,610 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-13 01:05:41,610 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-13 01:05:41,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:05:41,611 INFO L82 PathProgramCache]: Analyzing trace with hash -960394634, now seen corresponding path program 3 times [2021-10-13 01:05:41,611 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:05:41,612 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141952080] [2021-10-13 01:05:41,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:05:41,612 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:05:41,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:05:41,714 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 01:05:41,714 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:05:41,718 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141952080] [2021-10-13 01:05:41,719 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141952080] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 01:05:41,719 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:05:41,720 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 01:05:41,720 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459414881] [2021-10-13 01:05:41,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 01:05:41,721 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:05:41,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 01:05:41,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 01:05:41,723 INFO L87 Difference]: Start difference. First operand 154 states and 374 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 01:05:41,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:05:41,749 INFO L93 Difference]: Finished difference Result 176 states and 391 transitions. [2021-10-13 01:05:41,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 01:05:41,753 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 01:05:41,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:05:41,755 INFO L225 Difference]: With dead ends: 176 [2021-10-13 01:05:41,755 INFO L226 Difference]: Without dead ends: 132 [2021-10-13 01:05:41,756 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.4ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 01:05:41,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-10-13 01:05:41,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2021-10-13 01:05:41,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 131 states have (on average 2.236641221374046) internal successors, (293), 131 states have internal predecessors, (293), 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 01:05:41,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 293 transitions. [2021-10-13 01:05:41,763 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 293 transitions. Word has length 11 [2021-10-13 01:05:41,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:05:41,763 INFO L470 AbstractCegarLoop]: Abstraction has 132 states and 293 transitions. [2021-10-13 01:05:41,764 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 01:05:41,764 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 293 transitions. [2021-10-13 01:05:41,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-13 01:05:41,765 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:05:41,765 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:05:41,765 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-13 01:05:41,766 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-13 01:05:41,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:05:41,768 INFO L82 PathProgramCache]: Analyzing trace with hash 293420561, now seen corresponding path program 1 times [2021-10-13 01:05:41,768 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:05:41,769 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009740513] [2021-10-13 01:05:41,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:05:41,769 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:05:41,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:05:41,841 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 01:05:41,841 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:05:41,842 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009740513] [2021-10-13 01:05:41,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009740513] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 01:05:41,842 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:05:41,843 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 01:05:41,843 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417657887] [2021-10-13 01:05:41,843 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 01:05:41,844 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:05:41,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 01:05:41,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-13 01:05:41,845 INFO L87 Difference]: Start difference. First operand 132 states and 293 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 01:05:41,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:05:41,894 INFO L93 Difference]: Finished difference Result 130 states and 267 transitions. [2021-10-13 01:05:41,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 01:05:41,894 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 01:05:41,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:05:41,896 INFO L225 Difference]: With dead ends: 130 [2021-10-13 01:05:41,896 INFO L226 Difference]: Without dead ends: 102 [2021-10-13 01:05:41,896 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 16.2ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-13 01:05:41,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2021-10-13 01:05:41,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2021-10-13 01:05:41,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 101 states have (on average 2.0495049504950495) internal successors, (207), 101 states have internal predecessors, (207), 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 01:05:41,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 207 transitions. [2021-10-13 01:05:41,902 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 207 transitions. Word has length 12 [2021-10-13 01:05:41,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:05:41,903 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 207 transitions. [2021-10-13 01:05:41,903 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 01:05:41,903 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 207 transitions. [2021-10-13 01:05:41,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-13 01:05:41,904 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:05:41,904 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:05:41,911 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-13 01:05:41,912 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-13 01:05:41,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:05:41,913 INFO L82 PathProgramCache]: Analyzing trace with hash -1492658743, now seen corresponding path program 1 times [2021-10-13 01:05:41,913 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:05:41,913 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905155920] [2021-10-13 01:05:41,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:05:41,913 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:05:41,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:05:41,995 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 01:05:41,995 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:05:41,995 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905155920] [2021-10-13 01:05:41,996 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905155920] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 01:05:41,996 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:05:41,996 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 01:05:41,996 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581351696] [2021-10-13 01:05:41,996 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 01:05:41,997 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:05:41,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 01:05:41,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-13 01:05:41,997 INFO L87 Difference]: Start difference. First operand 102 states and 207 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 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 01:05:42,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:05:42,067 INFO L93 Difference]: Finished difference Result 97 states and 195 transitions. [2021-10-13 01:05:42,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 01:05:42,068 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 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 01:05:42,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:05:42,069 INFO L225 Difference]: With dead ends: 97 [2021-10-13 01:05:42,069 INFO L226 Difference]: Without dead ends: 80 [2021-10-13 01:05:42,069 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 16.5ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-10-13 01:05:42,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-10-13 01:05:42,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 76. [2021-10-13 01:05:42,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 2.08) internal successors, (156), 75 states have internal predecessors, (156), 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 01:05:42,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 156 transitions. [2021-10-13 01:05:42,073 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 156 transitions. Word has length 14 [2021-10-13 01:05:42,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:05:42,073 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 156 transitions. [2021-10-13 01:05:42,074 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 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 01:05:42,074 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 156 transitions. [2021-10-13 01:05:42,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-13 01:05:42,075 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:05:42,075 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 01:05:42,075 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-13 01:05:42,075 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-13 01:05:42,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:05:42,076 INFO L82 PathProgramCache]: Analyzing trace with hash -30593963, now seen corresponding path program 1 times [2021-10-13 01:05:42,076 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:05:42,076 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251862945] [2021-10-13 01:05:42,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:05:42,076 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:05:42,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:05:42,177 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 01:05:42,178 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:05:42,178 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251862945] [2021-10-13 01:05:42,178 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251862945] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 01:05:42,178 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:05:42,179 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 01:05:42,179 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301127924] [2021-10-13 01:05:42,179 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 01:05:42,179 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:05:42,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 01:05:42,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 01:05:42,180 INFO L87 Difference]: Start difference. First operand 76 states and 156 transitions. Second operand has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 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 01:05:42,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:05:42,197 INFO L93 Difference]: Finished difference Result 101 states and 201 transitions. [2021-10-13 01:05:42,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 01:05:42,197 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 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 01:05:42,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:05:42,198 INFO L225 Difference]: With dead ends: 101 [2021-10-13 01:05:42,198 INFO L226 Difference]: Without dead ends: 60 [2021-10-13 01:05:42,199 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.5ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 01:05:42,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-10-13 01:05:42,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2021-10-13 01:05:42,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 1.9322033898305084) internal successors, (114), 59 states have internal predecessors, (114), 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 01:05:42,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 114 transitions. [2021-10-13 01:05:42,202 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 114 transitions. Word has length 17 [2021-10-13 01:05:42,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:05:42,202 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 114 transitions. [2021-10-13 01:05:42,202 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 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 01:05:42,202 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 114 transitions. [2021-10-13 01:05:42,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-13 01:05:42,203 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:05:42,203 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 01:05:42,203 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-13 01:05:42,204 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-13 01:05:42,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:05:42,204 INFO L82 PathProgramCache]: Analyzing trace with hash -1931758473, now seen corresponding path program 2 times [2021-10-13 01:05:42,204 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:05:42,205 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822676534] [2021-10-13 01:05:42,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:05:42,205 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:05:42,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:05:42,275 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 01:05:42,276 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:05:42,276 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822676534] [2021-10-13 01:05:42,276 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822676534] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 01:05:42,280 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:05:42,280 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 01:05:42,280 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229981128] [2021-10-13 01:05:42,281 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 01:05:42,281 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:05:42,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 01:05:42,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 01:05:42,282 INFO L87 Difference]: Start difference. First operand 60 states and 114 transitions. Second operand has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 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 01:05:42,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:05:42,299 INFO L93 Difference]: Finished difference Result 91 states and 172 transitions. [2021-10-13 01:05:42,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 01:05:42,300 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 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 01:05:42,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:05:42,302 INFO L225 Difference]: With dead ends: 91 [2021-10-13 01:05:42,302 INFO L226 Difference]: Without dead ends: 54 [2021-10-13 01:05:42,302 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.5ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 01:05:42,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-10-13 01:05:42,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2021-10-13 01:05:42,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 1.849056603773585) internal successors, (98), 53 states have internal predecessors, (98), 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 01:05:42,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 98 transitions. [2021-10-13 01:05:42,305 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 98 transitions. Word has length 17 [2021-10-13 01:05:42,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:05:42,306 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 98 transitions. [2021-10-13 01:05:42,308 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 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 01:05:42,309 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 98 transitions. [2021-10-13 01:05:42,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-13 01:05:42,309 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:05:42,309 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 01:05:42,309 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-13 01:05:42,310 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-13 01:05:42,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:05:42,310 INFO L82 PathProgramCache]: Analyzing trace with hash -247295787, now seen corresponding path program 3 times [2021-10-13 01:05:42,310 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:05:42,313 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388359614] [2021-10-13 01:05:42,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:05:42,314 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:05:42,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:05:42,382 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 01:05:42,382 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:05:42,383 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388359614] [2021-10-13 01:05:42,383 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388359614] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 01:05:42,383 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:05:42,383 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 01:05:42,383 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485624538] [2021-10-13 01:05:42,384 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 01:05:42,384 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:05:42,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 01:05:42,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 01:05:42,389 INFO L87 Difference]: Start difference. First operand 54 states and 98 transitions. Second operand has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 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 01:05:42,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:05:42,399 INFO L93 Difference]: Finished difference Result 53 states and 97 transitions. [2021-10-13 01:05:42,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 01:05:42,399 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 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 01:05:42,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:05:42,401 INFO L225 Difference]: With dead ends: 53 [2021-10-13 01:05:42,401 INFO L226 Difference]: Without dead ends: 0 [2021-10-13 01:05:42,402 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.0ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 01:05:42,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-13 01:05:42,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-13 01:05:42,402 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 01:05:42,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-13 01:05:42,403 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2021-10-13 01:05:42,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:05:42,403 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 01:05:42,404 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 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 01:05:42,404 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-13 01:05:42,404 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-13 01:05:42,406 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 01:05:42,407 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-13 01:05:42,407 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-13 01:05:42,410 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-13 01:05:42,410 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-13 01:05:42,415 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-13 01:05:42,415 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 01:05:42,418 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 01:05:42 BasicIcfg [2021-10-13 01:05:42,418 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 01:05:42,419 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 01:05:42,419 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 01:05:42,419 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 01:05:42,419 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:05:37" (3/4) ... [2021-10-13 01:05:42,422 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-13 01:05:42,428 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2021-10-13 01:05:42,428 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2021-10-13 01:05:42,428 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2021-10-13 01:05:42,436 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2021-10-13 01:05:42,436 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-13 01:05:42,436 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 01:05:42,436 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 01:05:42,476 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcf50071-4d82-466f-bf96-ef0d11c3c7b0/bin/uautomizer-WNIpwEf4Nt/witness.graphml [2021-10-13 01:05:42,476 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 01:05:42,477 INFO L168 Benchmark]: Toolchain (without parser) took 6553.41 ms. Allocated memory was 117.4 MB in the beginning and 172.0 MB in the end (delta: 54.5 MB). Free memory was 84.3 MB in the beginning and 111.6 MB in the end (delta: -27.3 MB). Peak memory consumption was 26.7 MB. Max. memory is 16.1 GB. [2021-10-13 01:05:42,478 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 117.4 MB. Free memory is still 71.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 01:05:42,478 INFO L168 Benchmark]: CACSL2BoogieTranslator took 517.24 ms. Allocated memory is still 117.4 MB. Free memory was 84.0 MB in the beginning and 80.9 MB in the end (delta: 3.0 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-13 01:05:42,479 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.39 ms. Allocated memory is still 117.4 MB. Free memory was 80.5 MB in the beginning and 78.8 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 01:05:42,479 INFO L168 Benchmark]: Boogie Preprocessor took 24.74 ms. Allocated memory is still 117.4 MB. Free memory was 78.8 MB in the beginning and 77.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 01:05:42,479 INFO L168 Benchmark]: RCFGBuilder took 493.50 ms. Allocated memory is still 117.4 MB. Free memory was 77.1 MB in the beginning and 65.0 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-13 01:05:42,480 INFO L168 Benchmark]: TraceAbstraction took 5410.35 ms. Allocated memory was 117.4 MB in the beginning and 172.0 MB in the end (delta: 54.5 MB). Free memory was 64.5 MB in the beginning and 114.8 MB in the end (delta: -50.2 MB). Peak memory consumption was 6.0 MB. Max. memory is 16.1 GB. [2021-10-13 01:05:42,480 INFO L168 Benchmark]: Witness Printer took 57.25 ms. Allocated memory is still 172.0 MB. Free memory was 114.8 MB in the beginning and 111.6 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-13 01:05:42,482 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 117.4 MB. Free memory is still 71.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 517.24 ms. Allocated memory is still 117.4 MB. Free memory was 84.0 MB in the beginning and 80.9 MB in the end (delta: 3.0 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 43.39 ms. Allocated memory is still 117.4 MB. Free memory was 80.5 MB in the beginning and 78.8 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 24.74 ms. Allocated memory is still 117.4 MB. Free memory was 78.8 MB in the beginning and 77.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 493.50 ms. Allocated memory is still 117.4 MB. Free memory was 77.1 MB in the beginning and 65.0 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5410.35 ms. Allocated memory was 117.4 MB in the beginning and 172.0 MB in the end (delta: 54.5 MB). Free memory was 64.5 MB in the beginning and 114.8 MB in the end (delta: -50.2 MB). Peak memory consumption was 6.0 MB. Max. memory is 16.1 GB. * Witness Printer took 57.25 ms. Allocated memory is still 172.0 MB. Free memory was 114.8 MB in the beginning and 111.6 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3183.1ms, 92 PlacesBefore, 31 PlacesAfterwards, 84 TransitionsBefore, 21 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 5 FixpointIterations, 20 TrivialSequentialCompositions, 45 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 2 ChoiceCompositions, 73 TotalNumberOfCompositions, 2476 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1499, positive: 1418, positive conditional: 0, positive unconditional: 1418, negative: 81, negative conditional: 0, negative unconditional: 81, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1042, positive: 989, positive conditional: 0, positive unconditional: 989, negative: 53, negative conditional: 0, negative unconditional: 53, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1042, positive: 974, positive conditional: 0, positive unconditional: 974, negative: 68, negative conditional: 0, negative unconditional: 68, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 68, positive: 15, positive conditional: 0, positive unconditional: 15, negative: 53, negative conditional: 0, negative unconditional: 53, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 186, positive: 60, positive conditional: 0, positive unconditional: 60, negative: 126, negative conditional: 0, negative unconditional: 126, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1499, positive: 429, positive conditional: 0, positive unconditional: 429, negative: 28, negative conditional: 0, negative unconditional: 28, unknown: 1042, unknown conditional: 0, unknown unconditional: 1042] , Statistics on independence cache: Total cache size (in pairs): 78, Positive cache size: 61, Positive conditional cache size: 0, Positive unconditional cache size: 61, Negative cache size: 17, Negative conditional cache size: 0, Negative unconditional cache size: 17 - 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 7 procedures, 107 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 5292.8ms, OverallIterations: 11, TraceHistogramMax: 1, EmptinessCheckTime: 26.9ms, AutomataDifference: 486.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 3249.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 218 SDtfs, 240 SDslu, 276 SDs, 0 SdLazy, 158 SolverSat, 35 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 188.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 41 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 155.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=238occurred in iteration=2, InterpolantAutomatonStates: 53, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 155.2ms AutomataMinimizationTime, 11 MinimizatonAttempts, 150 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 41.5ms SsaConstructionTime, 275.0ms SatisfiabilityAnalysisTime, 772.4ms InterpolantComputationTime, 137 NumberOfCodeBlocks, 137 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 126 ConstructedInterpolants, 0 QuantifiedInterpolants, 440 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 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 01:05:42,525 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcf50071-4d82-466f-bf96-ef0d11c3c7b0/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...