./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe010_tso.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 57096758 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6487874-86a4-406d-a03a-9fb6e6d018ed/bin/uautomizer-hJ6jxDFKc3/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6487874-86a4-406d-a03a-9fb6e6d018ed/bin/uautomizer-hJ6jxDFKc3/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6487874-86a4-406d-a03a-9fb6e6d018ed/bin/uautomizer-hJ6jxDFKc3/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6487874-86a4-406d-a03a-9fb6e6d018ed/bin/uautomizer-hJ6jxDFKc3/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe010_tso.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6487874-86a4-406d-a03a-9fb6e6d018ed/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6487874-86a4-406d-a03a-9fb6e6d018ed/bin/uautomizer-hJ6jxDFKc3 --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 7895f3e1855496b2c7022774f557d3983ab5bfbd .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-15 19:56:46,648 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-15 19:56:46,651 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-15 19:56:46,681 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-15 19:56:46,681 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-15 19:56:46,683 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-15 19:56:46,685 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-15 19:56:46,687 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-15 19:56:46,689 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-15 19:56:46,691 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-15 19:56:46,692 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-15 19:56:46,693 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-15 19:56:46,694 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-15 19:56:46,696 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-15 19:56:46,697 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-15 19:56:46,699 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-15 19:56:46,700 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-15 19:56:46,701 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-15 19:56:46,704 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-15 19:56:46,706 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-15 19:56:46,708 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-15 19:56:46,710 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-15 19:56:46,712 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-15 19:56:46,713 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-15 19:56:46,717 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-15 19:56:46,717 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-15 19:56:46,718 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-15 19:56:46,719 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-15 19:56:46,720 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-15 19:56:46,721 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-15 19:56:46,721 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-15 19:56:46,723 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-15 19:56:46,724 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-15 19:56:46,725 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-15 19:56:46,726 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-15 19:56:46,727 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-15 19:56:46,728 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-15 19:56:46,728 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-15 19:56:46,729 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-15 19:56:46,730 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-15 19:56:46,731 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-15 19:56:46,732 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6487874-86a4-406d-a03a-9fb6e6d018ed/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-15 19:56:46,756 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-15 19:56:46,756 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-15 19:56:46,756 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-15 19:56:46,756 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-15 19:56:46,758 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-15 19:56:46,758 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-15 19:56:46,758 INFO L138 SettingsManager]: * Use SBE=true [2021-10-15 19:56:46,758 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-15 19:56:46,759 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-15 19:56:46,759 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-15 19:56:46,759 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-15 19:56:46,759 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-15 19:56:46,759 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-15 19:56:46,760 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-15 19:56:46,760 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-15 19:56:46,760 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-15 19:56:46,760 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-15 19:56:46,761 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-15 19:56:46,761 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-15 19:56:46,761 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-15 19:56:46,761 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-15 19:56:46,761 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-15 19:56:46,762 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 19:56:46,762 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-15 19:56:46,762 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-15 19:56:46,762 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-15 19:56:46,763 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-15 19:56:46,763 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-15 19:56:46,763 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-15 19:56:46,763 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-15 19:56:46,763 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-15 19:56:46,764 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-15 19:56:46,764 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_f6487874-86a4-406d-a03a-9fb6e6d018ed/bin/uautomizer-hJ6jxDFKc3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6487874-86a4-406d-a03a-9fb6e6d018ed/bin/uautomizer-hJ6jxDFKc3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7895f3e1855496b2c7022774f557d3983ab5bfbd [2021-10-15 19:56:47,008 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-15 19:56:47,040 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-15 19:56:47,043 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-15 19:56:47,045 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-15 19:56:47,046 INFO L275 PluginConnector]: CDTParser initialized [2021-10-15 19:56:47,046 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6487874-86a4-406d-a03a-9fb6e6d018ed/bin/uautomizer-hJ6jxDFKc3/../../sv-benchmarks/c/pthread-wmm/safe010_tso.i [2021-10-15 19:56:47,134 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6487874-86a4-406d-a03a-9fb6e6d018ed/bin/uautomizer-hJ6jxDFKc3/data/65479750d/cc048c76b48c43a38ea57048e21ed32e/FLAG9b55d8c0f [2021-10-15 19:56:47,717 INFO L306 CDTParser]: Found 1 translation units. [2021-10-15 19:56:47,718 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6487874-86a4-406d-a03a-9fb6e6d018ed/sv-benchmarks/c/pthread-wmm/safe010_tso.i [2021-10-15 19:56:47,745 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6487874-86a4-406d-a03a-9fb6e6d018ed/bin/uautomizer-hJ6jxDFKc3/data/65479750d/cc048c76b48c43a38ea57048e21ed32e/FLAG9b55d8c0f [2021-10-15 19:56:47,959 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6487874-86a4-406d-a03a-9fb6e6d018ed/bin/uautomizer-hJ6jxDFKc3/data/65479750d/cc048c76b48c43a38ea57048e21ed32e [2021-10-15 19:56:47,962 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-15 19:56:47,963 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-15 19:56:47,969 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-15 19:56:47,969 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-15 19:56:47,974 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-15 19:56:47,975 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:56:47" (1/1) ... [2021-10-15 19:56:47,976 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@153a284d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:56:47, skipping insertion in model container [2021-10-15 19:56:47,977 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:56:47" (1/1) ... [2021-10-15 19:56:47,984 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-15 19:56:48,046 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-15 19:56:48,235 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_f6487874-86a4-406d-a03a-9fb6e6d018ed/sv-benchmarks/c/pthread-wmm/safe010_tso.i[945,958] [2021-10-15 19:56:48,407 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 19:56:48,417 INFO L203 MainTranslator]: Completed pre-run [2021-10-15 19:56:48,432 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_f6487874-86a4-406d-a03a-9fb6e6d018ed/sv-benchmarks/c/pthread-wmm/safe010_tso.i[945,958] [2021-10-15 19:56:48,496 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 19:56:48,551 INFO L208 MainTranslator]: Completed translation [2021-10-15 19:56:48,552 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:56:48 WrapperNode [2021-10-15 19:56:48,553 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-15 19:56:48,554 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-15 19:56:48,555 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-15 19:56:48,555 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-15 19:56:48,563 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:56:48" (1/1) ... [2021-10-15 19:56:48,600 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:56:48" (1/1) ... [2021-10-15 19:56:48,622 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-15 19:56:48,623 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-15 19:56:48,623 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-15 19:56:48,624 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-15 19:56:48,637 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:56:48" (1/1) ... [2021-10-15 19:56:48,637 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:56:48" (1/1) ... [2021-10-15 19:56:48,643 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:56:48" (1/1) ... [2021-10-15 19:56:48,643 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:56:48" (1/1) ... [2021-10-15 19:56:48,652 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:56:48" (1/1) ... [2021-10-15 19:56:48,658 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:56:48" (1/1) ... [2021-10-15 19:56:48,660 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:56:48" (1/1) ... [2021-10-15 19:56:48,677 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-15 19:56:48,678 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-15 19:56:48,678 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-15 19:56:48,679 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-15 19:56:48,680 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:56:48" (1/1) ... [2021-10-15 19:56:48,688 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 19:56:48,699 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6487874-86a4-406d-a03a-9fb6e6d018ed/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:56:48,713 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6487874-86a4-406d-a03a-9fb6e6d018ed/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-15 19:56:48,728 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6487874-86a4-406d-a03a-9fb6e6d018ed/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-15 19:56:48,771 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-15 19:56:48,771 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-15 19:56:48,771 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-15 19:56:48,772 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-15 19:56:48,772 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-10-15 19:56:48,772 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-10-15 19:56:48,772 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-10-15 19:56:48,772 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-10-15 19:56:48,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-15 19:56:48,773 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-15 19:56:48,773 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-15 19:56:48,773 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-15 19:56:48,774 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-15 19:56:49,142 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-15 19:56:49,142 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-10-15 19:56:49,144 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:56:49 BoogieIcfgContainer [2021-10-15 19:56:49,144 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-15 19:56:49,146 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-15 19:56:49,146 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-15 19:56:49,149 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-15 19:56:49,150 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 07:56:47" (1/3) ... [2021-10-15 19:56:49,150 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@190339f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 07:56:49, skipping insertion in model container [2021-10-15 19:56:49,150 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:56:48" (2/3) ... [2021-10-15 19:56:49,151 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@190339f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 07:56:49, skipping insertion in model container [2021-10-15 19:56:49,151 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:56:49" (3/3) ... [2021-10-15 19:56:49,152 INFO L111 eAbstractionObserver]: Analyzing ICFG safe010_tso.i [2021-10-15 19:56:49,157 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-15 19:56:49,157 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-15 19:56:49,158 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-15 19:56:49,158 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-15 19:56:49,181 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-15 19:56:49,181 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-15 19:56:49,181 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-15 19:56:49,182 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-15 19:56:49,182 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-15 19:56:49,182 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-15 19:56:49,182 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-15 19:56:49,183 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-15 19:56:49,183 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-15 19:56:49,183 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-15 19:56:49,184 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-15 19:56:49,184 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-15 19:56:49,184 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-15 19:56:49,184 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-15 19:56:49,185 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-15 19:56:49,185 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-15 19:56:49,185 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-15 19:56:49,185 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-15 19:56:49,185 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-15 19:56:49,186 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-15 19:56:49,186 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-15 19:56:49,186 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-15 19:56:49,187 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-15 19:56:49,187 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-15 19:56:49,190 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-15 19:56:49,190 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-15 19:56:49,190 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-15 19:56:49,191 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-15 19:56:49,195 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-15 19:56:49,195 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-15 19:56:49,195 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-15 19:56:49,195 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-15 19:56:49,200 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-10-15 19:56:49,244 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-15 19:56:49,251 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=PETRI_NET, 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 [2021-10-15 19:56:49,251 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-15 19:56:49,263 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 71 places, 66 transitions, 142 flow [2021-10-15 19:56:49,307 INFO L129 PetriNetUnfolder]: 2/64 cut-off events. [2021-10-15 19:56:49,307 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:56:49,310 INFO L84 FinitePrefix]: Finished finitePrefix Result has 71 conditions, 64 events. 2/64 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 35 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2021-10-15 19:56:49,310 INFO L82 GeneralOperation]: Start removeDead. Operand has 71 places, 66 transitions, 142 flow [2021-10-15 19:56:49,323 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 60 places, 54 transitions, 114 flow [2021-10-15 19:56:49,339 INFO L129 PetriNetUnfolder]: 1/53 cut-off events. [2021-10-15 19:56:49,340 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:56:49,340 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:56:49,341 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:56:49,341 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-15 19:56:49,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:56:49,347 INFO L82 PathProgramCache]: Analyzing trace with hash 1974599414, now seen corresponding path program 1 times [2021-10-15 19:56:49,356 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:56:49,356 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830245962] [2021-10-15 19:56:49,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:56:49,358 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:56:49,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:56:49,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:56:49,861 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:56:49,861 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830245962] [2021-10-15 19:56:49,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830245962] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:56:49,863 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:56:49,871 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-15 19:56:49,872 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314661902] [2021-10-15 19:56:49,882 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-15 19:56:49,893 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:56:49,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-15 19:56:49,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-10-15 19:56:49,912 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 66 [2021-10-15 19:56:49,922 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 54 transitions, 114 flow. Second operand has 7 states, 7 states have (on average 52.142857142857146) internal successors, (365), 7 states have internal predecessors, (365), 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) [2021-10-15 19:56:49,923 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:56:49,923 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 66 [2021-10-15 19:56:49,924 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:56:50,282 INFO L129 PetriNetUnfolder]: 44/195 cut-off events. [2021-10-15 19:56:50,286 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:56:50,287 INFO L84 FinitePrefix]: Finished finitePrefix Result has 309 conditions, 195 events. 44/195 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 777 event pairs, 5 based on Foata normal form. 10/199 useless extension candidates. Maximal degree in co-relation 280. Up to 30 conditions per place. [2021-10-15 19:56:50,292 INFO L132 encePairwiseOnDemand]: 57/66 looper letters, 13 selfloop transitions, 4 changer transitions 26/85 dead transitions. [2021-10-15 19:56:50,293 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 85 transitions, 262 flow [2021-10-15 19:56:50,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-15 19:56:50,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-10-15 19:56:50,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 712 transitions. [2021-10-15 19:56:50,316 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8298368298368298 [2021-10-15 19:56:50,317 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 712 transitions. [2021-10-15 19:56:50,318 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 712 transitions. [2021-10-15 19:56:50,323 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:56:50,327 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 712 transitions. [2021-10-15 19:56:50,332 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 54.76923076923077) internal successors, (712), 13 states have internal predecessors, (712), 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) [2021-10-15 19:56:50,341 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 66.0) internal successors, (924), 14 states have internal predecessors, (924), 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) [2021-10-15 19:56:50,342 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 66.0) internal successors, (924), 14 states have internal predecessors, (924), 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) [2021-10-15 19:56:50,344 INFO L186 Difference]: Start difference. First operand has 60 places, 54 transitions, 114 flow. Second operand 13 states and 712 transitions. [2021-10-15 19:56:50,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 85 transitions, 262 flow [2021-10-15 19:56:50,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 85 transitions, 260 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-10-15 19:56:50,352 INFO L242 Difference]: Finished difference. Result has 81 places, 54 transitions, 154 flow [2021-10-15 19:56:50,355 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=154, PETRI_PLACES=81, PETRI_TRANSITIONS=54} [2021-10-15 19:56:50,356 INFO L334 CegarLoopForPetriNet]: 60 programPoint places, 21 predicate places. [2021-10-15 19:56:50,356 INFO L470 AbstractCegarLoop]: Abstraction has has 81 places, 54 transitions, 154 flow [2021-10-15 19:56:50,357 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 52.142857142857146) internal successors, (365), 7 states have internal predecessors, (365), 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) [2021-10-15 19:56:50,357 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:56:50,357 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:56:50,357 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-15 19:56:50,358 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-15 19:56:50,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:56:50,359 INFO L82 PathProgramCache]: Analyzing trace with hash 1298837141, now seen corresponding path program 1 times [2021-10-15 19:56:50,359 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:56:50,359 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982662699] [2021-10-15 19:56:50,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:56:50,360 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:56:50,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:56:50,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:56:50,540 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:56:50,540 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982662699] [2021-10-15 19:56:50,541 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982662699] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:56:50,541 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:56:50,541 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-15 19:56:50,542 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904739589] [2021-10-15 19:56:50,544 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-15 19:56:50,544 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:56:50,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-15 19:56:50,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-15 19:56:50,549 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 66 [2021-10-15 19:56:50,550 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 54 transitions, 154 flow. Second operand has 7 states, 7 states have (on average 50.42857142857143) internal successors, (353), 7 states have internal predecessors, (353), 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) [2021-10-15 19:56:50,550 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:56:50,551 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 66 [2021-10-15 19:56:50,551 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:56:50,952 INFO L129 PetriNetUnfolder]: 64/270 cut-off events. [2021-10-15 19:56:50,952 INFO L130 PetriNetUnfolder]: For 358/420 co-relation queries the response was YES. [2021-10-15 19:56:50,957 INFO L84 FinitePrefix]: Finished finitePrefix Result has 642 conditions, 270 events. 64/270 cut-off events. For 358/420 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1292 event pairs, 0 based on Foata normal form. 10/276 useless extension candidates. Maximal degree in co-relation 601. Up to 36 conditions per place. [2021-10-15 19:56:50,960 INFO L132 encePairwiseOnDemand]: 56/66 looper letters, 23 selfloop transitions, 8 changer transitions 40/111 dead transitions. [2021-10-15 19:56:50,960 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 111 transitions, 608 flow [2021-10-15 19:56:50,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-15 19:56:50,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-10-15 19:56:50,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 904 transitions. [2021-10-15 19:56:50,964 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8057040998217468 [2021-10-15 19:56:50,965 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 904 transitions. [2021-10-15 19:56:50,965 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 904 transitions. [2021-10-15 19:56:50,966 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:56:50,966 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 904 transitions. [2021-10-15 19:56:50,969 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 53.1764705882353) internal successors, (904), 17 states have internal predecessors, (904), 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) [2021-10-15 19:56:50,973 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 66.0) internal successors, (1188), 18 states have internal predecessors, (1188), 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) [2021-10-15 19:56:50,975 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 66.0) internal successors, (1188), 18 states have internal predecessors, (1188), 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) [2021-10-15 19:56:50,975 INFO L186 Difference]: Start difference. First operand has 81 places, 54 transitions, 154 flow. Second operand 17 states and 904 transitions. [2021-10-15 19:56:50,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 111 transitions, 608 flow [2021-10-15 19:56:50,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 111 transitions, 492 flow, removed 44 selfloop flow, removed 8 redundant places. [2021-10-15 19:56:50,987 INFO L242 Difference]: Finished difference. Result has 95 places, 57 transitions, 205 flow [2021-10-15 19:56:50,987 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=205, PETRI_PLACES=95, PETRI_TRANSITIONS=57} [2021-10-15 19:56:50,989 INFO L334 CegarLoopForPetriNet]: 60 programPoint places, 35 predicate places. [2021-10-15 19:56:50,989 INFO L470 AbstractCegarLoop]: Abstraction has has 95 places, 57 transitions, 205 flow [2021-10-15 19:56:50,990 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 50.42857142857143) internal successors, (353), 7 states have internal predecessors, (353), 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) [2021-10-15 19:56:50,990 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:56:50,991 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:56:50,991 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-15 19:56:50,992 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-15 19:56:50,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:56:50,993 INFO L82 PathProgramCache]: Analyzing trace with hash -620874422, now seen corresponding path program 1 times [2021-10-15 19:56:50,993 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:56:50,993 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645409612] [2021-10-15 19:56:50,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:56:50,993 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:56:51,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:56:51,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:56:51,252 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:56:51,253 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645409612] [2021-10-15 19:56:51,253 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645409612] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:56:51,253 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:56:51,253 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-15 19:56:51,253 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977158386] [2021-10-15 19:56:51,254 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-15 19:56:51,254 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:56:51,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-15 19:56:51,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-10-15 19:56:51,256 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 66 [2021-10-15 19:56:51,257 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 57 transitions, 205 flow. Second operand has 8 states, 8 states have (on average 50.375) internal successors, (403), 8 states have internal predecessors, (403), 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) [2021-10-15 19:56:51,257 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:56:51,258 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 66 [2021-10-15 19:56:51,258 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:56:51,453 INFO L129 PetriNetUnfolder]: 23/149 cut-off events. [2021-10-15 19:56:51,453 INFO L130 PetriNetUnfolder]: For 453/514 co-relation queries the response was YES. [2021-10-15 19:56:51,454 INFO L84 FinitePrefix]: Finished finitePrefix Result has 450 conditions, 149 events. 23/149 cut-off events. For 453/514 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 475 event pairs, 0 based on Foata normal form. 7/153 useless extension candidates. Maximal degree in co-relation 405. Up to 19 conditions per place. [2021-10-15 19:56:51,455 INFO L132 encePairwiseOnDemand]: 57/66 looper letters, 12 selfloop transitions, 5 changer transitions 27/83 dead transitions. [2021-10-15 19:56:51,455 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 83 transitions, 491 flow [2021-10-15 19:56:51,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-15 19:56:51,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-10-15 19:56:51,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 578 transitions. [2021-10-15 19:56:51,459 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7961432506887053 [2021-10-15 19:56:51,459 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 578 transitions. [2021-10-15 19:56:51,460 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 578 transitions. [2021-10-15 19:56:51,460 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:56:51,461 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 578 transitions. [2021-10-15 19:56:51,463 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 52.54545454545455) internal successors, (578), 11 states have internal predecessors, (578), 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) [2021-10-15 19:56:51,466 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 66.0) internal successors, (792), 12 states have internal predecessors, (792), 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) [2021-10-15 19:56:51,466 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 66.0) internal successors, (792), 12 states have internal predecessors, (792), 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) [2021-10-15 19:56:51,467 INFO L186 Difference]: Start difference. First operand has 95 places, 57 transitions, 205 flow. Second operand 11 states and 578 transitions. [2021-10-15 19:56:51,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 83 transitions, 491 flow [2021-10-15 19:56:51,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 83 transitions, 376 flow, removed 52 selfloop flow, removed 16 redundant places. [2021-10-15 19:56:51,474 INFO L242 Difference]: Finished difference. Result has 85 places, 52 transitions, 170 flow [2021-10-15 19:56:51,474 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=170, PETRI_PLACES=85, PETRI_TRANSITIONS=52} [2021-10-15 19:56:51,475 INFO L334 CegarLoopForPetriNet]: 60 programPoint places, 25 predicate places. [2021-10-15 19:56:51,475 INFO L470 AbstractCegarLoop]: Abstraction has has 85 places, 52 transitions, 170 flow [2021-10-15 19:56:51,475 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 50.375) internal successors, (403), 8 states have internal predecessors, (403), 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) [2021-10-15 19:56:51,476 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:56:51,476 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:56:51,476 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-15 19:56:51,477 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-15 19:56:51,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:56:51,477 INFO L82 PathProgramCache]: Analyzing trace with hash -525374216, now seen corresponding path program 1 times [2021-10-15 19:56:51,478 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:56:51,478 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024724499] [2021-10-15 19:56:51,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:56:51,478 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:56:51,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:56:51,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:56:51,605 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:56:51,605 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024724499] [2021-10-15 19:56:51,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024724499] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:56:51,605 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:56:51,606 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-15 19:56:51,606 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956500647] [2021-10-15 19:56:51,608 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-15 19:56:51,608 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:56:51,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-15 19:56:51,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-15 19:56:51,619 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 66 [2021-10-15 19:56:51,619 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 52 transitions, 170 flow. Second operand has 6 states, 6 states have (on average 54.166666666666664) internal successors, (325), 6 states have internal predecessors, (325), 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) [2021-10-15 19:56:51,620 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:56:51,620 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 66 [2021-10-15 19:56:51,620 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:56:51,749 INFO L129 PetriNetUnfolder]: 24/121 cut-off events. [2021-10-15 19:56:51,749 INFO L130 PetriNetUnfolder]: For 42/43 co-relation queries the response was YES. [2021-10-15 19:56:51,750 INFO L84 FinitePrefix]: Finished finitePrefix Result has 235 conditions, 121 events. 24/121 cut-off events. For 42/43 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 366 event pairs, 0 based on Foata normal form. 4/123 useless extension candidates. Maximal degree in co-relation 214. Up to 27 conditions per place. [2021-10-15 19:56:51,758 INFO L132 encePairwiseOnDemand]: 58/66 looper letters, 5 selfloop transitions, 4 changer transitions 19/71 dead transitions. [2021-10-15 19:56:51,758 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 71 transitions, 264 flow [2021-10-15 19:56:51,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-15 19:56:51,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-10-15 19:56:51,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 507 transitions. [2021-10-15 19:56:51,763 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8535353535353535 [2021-10-15 19:56:51,763 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 507 transitions. [2021-10-15 19:56:51,763 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 507 transitions. [2021-10-15 19:56:51,764 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:56:51,764 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 507 transitions. [2021-10-15 19:56:51,766 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 56.333333333333336) internal successors, (507), 9 states have internal predecessors, (507), 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) [2021-10-15 19:56:51,769 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 66.0) internal successors, (660), 10 states have internal predecessors, (660), 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) [2021-10-15 19:56:51,769 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 66.0) internal successors, (660), 10 states have internal predecessors, (660), 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) [2021-10-15 19:56:51,769 INFO L186 Difference]: Start difference. First operand has 85 places, 52 transitions, 170 flow. Second operand 9 states and 507 transitions. [2021-10-15 19:56:51,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 71 transitions, 264 flow [2021-10-15 19:56:51,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 71 transitions, 220 flow, removed 11 selfloop flow, removed 15 redundant places. [2021-10-15 19:56:51,776 INFO L242 Difference]: Finished difference. Result has 77 places, 52 transitions, 156 flow [2021-10-15 19:56:51,776 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=156, PETRI_PLACES=77, PETRI_TRANSITIONS=52} [2021-10-15 19:56:51,776 INFO L334 CegarLoopForPetriNet]: 60 programPoint places, 17 predicate places. [2021-10-15 19:56:51,777 INFO L470 AbstractCegarLoop]: Abstraction has has 77 places, 52 transitions, 156 flow [2021-10-15 19:56:51,777 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 54.166666666666664) internal successors, (325), 6 states have internal predecessors, (325), 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) [2021-10-15 19:56:51,777 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:56:51,777 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:56:51,778 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-15 19:56:51,778 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-15 19:56:51,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:56:51,780 INFO L82 PathProgramCache]: Analyzing trace with hash 21096983, now seen corresponding path program 1 times [2021-10-15 19:56:51,780 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:56:51,780 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919712025] [2021-10-15 19:56:51,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:56:51,781 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:56:51,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:56:51,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:56:51,946 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:56:51,946 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919712025] [2021-10-15 19:56:51,947 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919712025] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:56:51,947 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:56:51,947 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-15 19:56:51,947 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895734178] [2021-10-15 19:56:51,947 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-15 19:56:51,948 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:56:51,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-15 19:56:51,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-10-15 19:56:51,950 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 66 [2021-10-15 19:56:51,950 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 52 transitions, 156 flow. Second operand has 7 states, 7 states have (on average 54.142857142857146) internal successors, (379), 7 states have internal predecessors, (379), 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) [2021-10-15 19:56:51,950 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:56:51,951 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 66 [2021-10-15 19:56:51,951 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:56:52,039 INFO L129 PetriNetUnfolder]: 3/59 cut-off events. [2021-10-15 19:56:52,040 INFO L130 PetriNetUnfolder]: For 42/44 co-relation queries the response was YES. [2021-10-15 19:56:52,040 INFO L84 FinitePrefix]: Finished finitePrefix Result has 138 conditions, 59 events. 3/59 cut-off events. For 42/44 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 77 event pairs, 0 based on Foata normal form. 4/63 useless extension candidates. Maximal degree in co-relation 122. Up to 10 conditions per place. [2021-10-15 19:56:52,040 INFO L132 encePairwiseOnDemand]: 58/66 looper letters, 0 selfloop transitions, 0 changer transitions 55/55 dead transitions. [2021-10-15 19:56:52,041 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 55 transitions, 223 flow [2021-10-15 19:56:52,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-15 19:56:52,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-10-15 19:56:52,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 550 transitions. [2021-10-15 19:56:52,043 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8333333333333334 [2021-10-15 19:56:52,044 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 550 transitions. [2021-10-15 19:56:52,044 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 550 transitions. [2021-10-15 19:56:52,044 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:56:52,044 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 550 transitions. [2021-10-15 19:56:52,046 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 55.0) internal successors, (550), 10 states have internal predecessors, (550), 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) [2021-10-15 19:56:52,048 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 66.0) internal successors, (726), 11 states have internal predecessors, (726), 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) [2021-10-15 19:56:52,049 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 66.0) internal successors, (726), 11 states have internal predecessors, (726), 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) [2021-10-15 19:56:52,049 INFO L186 Difference]: Start difference. First operand has 77 places, 52 transitions, 156 flow. Second operand 10 states and 550 transitions. [2021-10-15 19:56:52,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 55 transitions, 223 flow [2021-10-15 19:56:52,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 55 transitions, 187 flow, removed 10 selfloop flow, removed 9 redundant places. [2021-10-15 19:56:52,051 INFO L242 Difference]: Finished difference. Result has 67 places, 0 transitions, 0 flow [2021-10-15 19:56:52,051 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=0, PETRI_PLACES=67, PETRI_TRANSITIONS=0} [2021-10-15 19:56:52,052 INFO L334 CegarLoopForPetriNet]: 60 programPoint places, 7 predicate places. [2021-10-15 19:56:52,052 INFO L470 AbstractCegarLoop]: Abstraction has has 67 places, 0 transitions, 0 flow [2021-10-15 19:56:52,052 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 54.142857142857146) internal successors, (379), 7 states have internal predecessors, (379), 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) [2021-10-15 19:56:52,055 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:56:52,055 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-15 19:56:52,055 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-15 19:56:52,055 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-15 19:56:52,061 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-15 19:56:52,061 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-15 19:56:52,063 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 07:56:52 BasicIcfg [2021-10-15 19:56:52,063 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-15 19:56:52,064 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-15 19:56:52,064 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-15 19:56:52,064 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-15 19:56:52,065 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:56:49" (3/4) ... [2021-10-15 19:56:52,067 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-15 19:56:52,074 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2021-10-15 19:56:52,074 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2021-10-15 19:56:52,078 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2021-10-15 19:56:52,078 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-15 19:56:52,079 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-15 19:56:52,079 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-15 19:56:52,112 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6487874-86a4-406d-a03a-9fb6e6d018ed/bin/uautomizer-hJ6jxDFKc3/witness.graphml [2021-10-15 19:56:52,112 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-15 19:56:52,114 INFO L168 Benchmark]: Toolchain (without parser) took 4149.83 ms. Allocated memory was 86.0 MB in the beginning and 138.4 MB in the end (delta: 52.4 MB). Free memory was 49.1 MB in the beginning and 58.4 MB in the end (delta: -9.2 MB). Peak memory consumption was 42.6 MB. Max. memory is 16.1 GB. [2021-10-15 19:56:52,114 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 86.0 MB. Free memory was 58.2 MB in the beginning and 58.2 MB in the end (delta: 25.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 19:56:52,115 INFO L168 Benchmark]: CACSL2BoogieTranslator took 584.51 ms. Allocated memory was 86.0 MB in the beginning and 107.0 MB in the end (delta: 21.0 MB). Free memory was 49.0 MB in the beginning and 73.3 MB in the end (delta: -24.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-15 19:56:52,116 INFO L168 Benchmark]: Boogie Procedure Inliner took 68.49 ms. Allocated memory is still 107.0 MB. Free memory was 73.3 MB in the beginning and 71.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-15 19:56:52,116 INFO L168 Benchmark]: Boogie Preprocessor took 54.35 ms. Allocated memory is still 107.0 MB. Free memory was 71.2 MB in the beginning and 69.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-15 19:56:52,117 INFO L168 Benchmark]: RCFGBuilder took 466.35 ms. Allocated memory is still 107.0 MB. Free memory was 69.7 MB in the beginning and 58.6 MB in the end (delta: 11.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-15 19:56:52,117 INFO L168 Benchmark]: TraceAbstraction took 2917.41 ms. Allocated memory was 107.0 MB in the beginning and 138.4 MB in the end (delta: 31.5 MB). Free memory was 57.7 MB in the beginning and 61.5 MB in the end (delta: -3.8 MB). Peak memory consumption was 28.3 MB. Max. memory is 16.1 GB. [2021-10-15 19:56:52,118 INFO L168 Benchmark]: Witness Printer took 48.68 ms. Allocated memory is still 138.4 MB. Free memory was 61.5 MB in the beginning and 58.4 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-15 19:56:52,120 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 86.0 MB. Free memory was 58.2 MB in the beginning and 58.2 MB in the end (delta: 25.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 584.51 ms. Allocated memory was 86.0 MB in the beginning and 107.0 MB in the end (delta: 21.0 MB). Free memory was 49.0 MB in the beginning and 73.3 MB in the end (delta: -24.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 68.49 ms. Allocated memory is still 107.0 MB. Free memory was 73.3 MB in the beginning and 71.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 54.35 ms. Allocated memory is still 107.0 MB. Free memory was 71.2 MB in the beginning and 69.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 466.35 ms. Allocated memory is still 107.0 MB. Free memory was 69.7 MB in the beginning and 58.6 MB in the end (delta: 11.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2917.41 ms. Allocated memory was 107.0 MB in the beginning and 138.4 MB in the end (delta: 31.5 MB). Free memory was 57.7 MB in the beginning and 61.5 MB in the end (delta: -3.8 MB). Peak memory consumption was 28.3 MB. Max. memory is 16.1 GB. * Witness Printer took 48.68 ms. Allocated memory is still 138.4 MB. Free memory was 61.5 MB in the beginning and 58.4 MB in the end (delta: 3.2 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: 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 5 procedures, 81 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 16.9ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 2818.8ms, OverallIterations: 5, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 1386.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 71.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 65 SDtfs, 188 SDslu, 202 SDs, 0 SdLazy, 186 SolverSat, 27 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 210.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 73 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 768.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=205occurred in iteration=2, InterpolantAutomatonStates: 60, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 26.6ms SsaConstructionTime, 207.8ms SatisfiabilityAnalysisTime, 868.8ms InterpolantComputationTime, 217 NumberOfCodeBlocks, 217 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 212 ConstructedInterpolants, 0 QuantifiedInterpolants, 850 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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! [2021-10-15 19:56:52,168 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6487874-86a4-406d-a03a-9fb6e6d018ed/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...