./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe028_pso.oepc_pso.opt_tso.oepc_tso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_023d613b-e14f-47be-bef4-fb0decf9a818/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_023d613b-e14f-47be-bef4-fb0decf9a818/bin/uautomizer-YU5uOKAj3y/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_023d613b-e14f-47be-bef4-fb0decf9a818/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_023d613b-e14f-47be-bef4-fb0decf9a818/bin/uautomizer-YU5uOKAj3y/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe028_pso.oepc_pso.opt_tso.oepc_tso.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_023d613b-e14f-47be-bef4-fb0decf9a818/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_023d613b-e14f-47be-bef4-fb0decf9a818/bin/uautomizer-YU5uOKAj3y --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 10dd65d363f3d099295f575f6743961c3e6b480300728ce34fc95b90972dc72c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 18:14:29,913 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 18:14:29,917 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 18:14:29,959 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 18:14:29,960 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 18:14:29,962 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 18:14:29,964 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 18:14:29,967 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 18:14:29,970 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 18:14:29,972 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 18:14:29,974 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 18:14:29,976 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 18:14:29,976 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 18:14:29,978 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 18:14:29,980 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 18:14:29,982 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 18:14:29,984 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 18:14:29,986 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 18:14:29,989 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 18:14:29,995 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 18:14:30,005 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 18:14:30,013 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 18:14:30,015 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 18:14:30,016 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 18:14:30,021 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 18:14:30,026 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 18:14:30,027 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 18:14:30,028 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 18:14:30,030 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 18:14:30,032 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 18:14:30,033 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 18:14:30,035 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 18:14:30,037 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 18:14:30,039 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 18:14:30,042 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 18:14:30,042 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 18:14:30,043 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 18:14:30,043 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 18:14:30,044 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 18:14:30,045 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 18:14:30,046 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 18:14:30,048 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_023d613b-e14f-47be-bef4-fb0decf9a818/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-13 18:14:30,109 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 18:14:30,109 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 18:14:30,110 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 18:14:30,111 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 18:14:30,119 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 18:14:30,120 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 18:14:30,121 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 18:14:30,121 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 18:14:30,121 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 18:14:30,122 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 18:14:30,123 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 18:14:30,123 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 18:14:30,123 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 18:14:30,124 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 18:14:30,124 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 18:14:30,124 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 18:14:30,124 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 18:14:30,125 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 18:14:30,125 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 18:14:30,125 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 18:14:30,126 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 18:14:30,126 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 18:14:30,126 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 18:14:30,126 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 18:14:30,127 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:14:30,127 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 18:14:30,127 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 18:14:30,128 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 18:14:30,128 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-13 18:14:30,130 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 18:14:30,130 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-13 18:14:30,130 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-13 18:14:30,131 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 18:14:30,131 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 18:14:30,131 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_023d613b-e14f-47be-bef4-fb0decf9a818/bin/uautomizer-YU5uOKAj3y/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_023d613b-e14f-47be-bef4-fb0decf9a818/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 10dd65d363f3d099295f575f6743961c3e6b480300728ce34fc95b90972dc72c [2021-11-13 18:14:30,432 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 18:14:30,458 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 18:14:30,461 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 18:14:30,463 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 18:14:30,464 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 18:14:30,465 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_023d613b-e14f-47be-bef4-fb0decf9a818/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/pthread-wmm/safe028_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2021-11-13 18:14:30,568 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_023d613b-e14f-47be-bef4-fb0decf9a818/bin/uautomizer-YU5uOKAj3y/data/6f454c52a/6d306ba28c8f4feab5a96a40151a8238/FLAG584d95317 [2021-11-13 18:14:31,310 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 18:14:31,311 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_023d613b-e14f-47be-bef4-fb0decf9a818/sv-benchmarks/c/pthread-wmm/safe028_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2021-11-13 18:14:31,335 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_023d613b-e14f-47be-bef4-fb0decf9a818/bin/uautomizer-YU5uOKAj3y/data/6f454c52a/6d306ba28c8f4feab5a96a40151a8238/FLAG584d95317 [2021-11-13 18:14:31,610 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_023d613b-e14f-47be-bef4-fb0decf9a818/bin/uautomizer-YU5uOKAj3y/data/6f454c52a/6d306ba28c8f4feab5a96a40151a8238 [2021-11-13 18:14:31,615 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 18:14:31,618 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 18:14:31,621 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 18:14:31,621 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 18:14:31,626 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 18:14:31,627 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:14:31" (1/1) ... [2021-11-13 18:14:31,630 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64dc8064 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:14:31, skipping insertion in model container [2021-11-13 18:14:31,630 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:14:31" (1/1) ... [2021-11-13 18:14:31,641 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 18:14:31,719 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 18:14:32,013 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_023d613b-e14f-47be-bef4-fb0decf9a818/sv-benchmarks/c/pthread-wmm/safe028_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2021-11-13 18:14:32,292 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:14:32,305 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 18:14:32,325 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_023d613b-e14f-47be-bef4-fb0decf9a818/sv-benchmarks/c/pthread-wmm/safe028_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2021-11-13 18:14:32,394 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:14:32,443 INFO L208 MainTranslator]: Completed translation [2021-11-13 18:14:32,444 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:14:32 WrapperNode [2021-11-13 18:14:32,444 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 18:14:32,445 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 18:14:32,445 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 18:14:32,445 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 18:14:32,455 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:14:32" (1/1) ... [2021-11-13 18:14:32,472 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:14:32" (1/1) ... [2021-11-13 18:14:32,500 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 18:14:32,501 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 18:14:32,501 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 18:14:32,501 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 18:14:32,512 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:14:32" (1/1) ... [2021-11-13 18:14:32,512 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:14:32" (1/1) ... [2021-11-13 18:14:32,516 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:14:32" (1/1) ... [2021-11-13 18:14:32,517 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:14:32" (1/1) ... [2021-11-13 18:14:32,525 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:14:32" (1/1) ... [2021-11-13 18:14:32,527 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:14:32" (1/1) ... [2021-11-13 18:14:32,529 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:14:32" (1/1) ... [2021-11-13 18:14:32,533 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 18:14:32,534 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 18:14:32,534 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 18:14:32,535 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 18:14:32,537 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:14:32" (1/1) ... [2021-11-13 18:14:32,562 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:14:32,582 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_023d613b-e14f-47be-bef4-fb0decf9a818/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:14:32,605 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_023d613b-e14f-47be-bef4-fb0decf9a818/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 18:14:32,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_023d613b-e14f-47be-bef4-fb0decf9a818/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 18:14:32,655 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-13 18:14:32,656 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-11-13 18:14:32,656 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 18:14:32,656 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-13 18:14:32,656 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-11-13 18:14:32,657 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-11-13 18:14:32,657 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-11-13 18:14:32,657 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-11-13 18:14:32,657 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-11-13 18:14:32,658 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-11-13 18:14:32,658 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-13 18:14:32,658 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-11-13 18:14:32,658 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 18:14:32,658 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 18:14:32,660 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-11-13 18:14:33,061 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 18:14:33,076 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-13 18:14:33,079 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:14:33 BoogieIcfgContainer [2021-11-13 18:14:33,080 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 18:14:33,082 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 18:14:33,083 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 18:14:33,087 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 18:14:33,087 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 06:14:31" (1/3) ... [2021-11-13 18:14:33,099 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@661d72e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:14:33, skipping insertion in model container [2021-11-13 18:14:33,100 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:14:32" (2/3) ... [2021-11-13 18:14:33,100 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@661d72e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:14:33, skipping insertion in model container [2021-11-13 18:14:33,100 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:14:33" (3/3) ... [2021-11-13 18:14:33,102 INFO L111 eAbstractionObserver]: Analyzing ICFG safe028_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2021-11-13 18:14:33,108 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-13 18:14:33,108 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 18:14:33,109 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-13 18:14:33,109 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-13 18:14:33,203 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:14:33,203 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:14:33,203 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:14:33,204 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:14:33,204 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:14:33,213 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:14:33,214 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:14:33,214 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:14:33,215 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:14:33,219 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:14:33,220 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:14:33,220 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:14:33,221 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:14:33,222 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:14:33,222 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:14:33,222 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:14:33,225 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:14:33,225 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:14:33,226 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:14:33,226 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:14:33,227 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:14:33,227 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:14:33,227 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:14:33,231 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:14:33,232 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:14:33,232 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:14:33,232 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:14:33,233 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:14:33,233 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:14:33,233 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:14:33,233 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:14:33,234 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:14:33,237 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:14:33,237 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:14:33,238 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:14:33,238 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:14:33,242 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:14:33,246 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:14:33,247 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:14:33,247 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:14:33,251 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:14:33,258 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:14:33,258 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:14:33,259 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:14:33,260 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:14:33,264 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:14:33,264 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:14:33,265 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:14:33,266 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-11-13 18:14:33,322 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 18:14:33,330 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, mAutomataTypeConcurrency=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 [2021-11-13 18:14:33,330 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-13 18:14:33,344 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 99 places, 91 transitions, 197 flow [2021-11-13 18:14:33,395 INFO L129 PetriNetUnfolder]: 2/88 cut-off events. [2021-11-13 18:14:33,396 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-11-13 18:14:33,403 INFO L84 FinitePrefix]: Finished finitePrefix Result has 98 conditions, 88 events. 2/88 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 44 event pairs, 0 based on Foata normal form. 0/85 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2021-11-13 18:14:33,403 INFO L82 GeneralOperation]: Start removeDead. Operand has 99 places, 91 transitions, 197 flow [2021-11-13 18:14:33,409 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 83 places, 74 transitions, 157 flow [2021-11-13 18:14:33,485 INFO L129 PetriNetUnfolder]: 1/73 cut-off events. [2021-11-13 18:14:33,486 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-11-13 18:14:33,486 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 18:14:33,487 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:14:33,487 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-13 18:14:33,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:14:33,494 INFO L85 PathProgramCache]: Analyzing trace with hash 1360834222, now seen corresponding path program 1 times [2021-11-13 18:14:33,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:14:33,510 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2959172] [2021-11-13 18:14:33,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:14:33,512 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:14:33,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:14:34,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:14:34,109 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:14:34,110 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2959172] [2021-11-13 18:14:34,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2959172] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:14:34,110 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:14:34,111 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 18:14:34,112 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724808599] [2021-11-13 18:14:34,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:14:34,125 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:14:34,125 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:14:34,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:14:34,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:14:34,167 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 91 [2021-11-13 18:14:34,174 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 74 transitions, 157 flow. Second operand has 6 states, 6 states have (on average 77.66666666666667) internal successors, (466), 6 states have internal predecessors, (466), 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) [2021-11-13 18:14:34,174 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 18:14:34,175 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 91 [2021-11-13 18:14:34,176 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 18:14:34,340 INFO L129 PetriNetUnfolder]: 3/89 cut-off events. [2021-11-13 18:14:34,341 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-11-13 18:14:34,342 INFO L84 FinitePrefix]: Finished finitePrefix Result has 122 conditions, 89 events. 3/89 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 89 event pairs, 0 based on Foata normal form. 4/92 useless extension candidates. Maximal degree in co-relation 87. Up to 7 conditions per place. [2021-11-13 18:14:34,343 INFO L132 encePairwiseOnDemand]: 84/91 looper letters, 9 selfloop transitions, 2 changer transitions 11/83 dead transitions. [2021-11-13 18:14:34,343 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 83 transitions, 217 flow [2021-11-13 18:14:34,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-13 18:14:34,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-11-13 18:14:34,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 709 transitions. [2021-11-13 18:14:34,364 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8656898656898657 [2021-11-13 18:14:34,365 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 709 transitions. [2021-11-13 18:14:34,366 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 709 transitions. [2021-11-13 18:14:34,373 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 18:14:34,376 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 709 transitions. [2021-11-13 18:14:34,386 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 78.77777777777777) internal successors, (709), 9 states have internal predecessors, (709), 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) [2021-11-13 18:14:34,399 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 91.0) internal successors, (910), 10 states have internal predecessors, (910), 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) [2021-11-13 18:14:34,400 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 91.0) internal successors, (910), 10 states have internal predecessors, (910), 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) [2021-11-13 18:14:34,403 INFO L186 Difference]: Start difference. First operand has 83 places, 74 transitions, 157 flow. Second operand 9 states and 709 transitions. [2021-11-13 18:14:34,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 83 transitions, 217 flow [2021-11-13 18:14:34,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 83 transitions, 214 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-11-13 18:14:34,412 INFO L242 Difference]: Finished difference. Result has 95 places, 72 transitions, 170 flow [2021-11-13 18:14:34,414 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=170, PETRI_PLACES=95, PETRI_TRANSITIONS=72} [2021-11-13 18:14:34,418 INFO L334 CegarLoopForPetriNet]: 83 programPoint places, 12 predicate places. [2021-11-13 18:14:34,419 INFO L470 AbstractCegarLoop]: Abstraction has has 95 places, 72 transitions, 170 flow [2021-11-13 18:14:34,419 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 77.66666666666667) internal successors, (466), 6 states have internal predecessors, (466), 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) [2021-11-13 18:14:34,419 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 18:14:34,420 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:14:34,420 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-13 18:14:34,420 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-13 18:14:34,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:14:34,421 INFO L85 PathProgramCache]: Analyzing trace with hash 1431108973, now seen corresponding path program 1 times [2021-11-13 18:14:34,421 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:14:34,422 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112592460] [2021-11-13 18:14:34,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:14:34,422 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:14:34,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:14:34,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:14:34,663 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:14:34,663 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112592460] [2021-11-13 18:14:34,663 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112592460] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:14:34,664 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:14:34,664 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 18:14:34,664 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195602881] [2021-11-13 18:14:34,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:14:34,666 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 18:14:34,666 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:14:34,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 18:14:34,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-13 18:14:34,669 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 91 [2021-11-13 18:14:34,671 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 72 transitions, 170 flow. Second operand has 7 states, 7 states have (on average 74.71428571428571) internal successors, (523), 7 states have internal predecessors, (523), 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) [2021-11-13 18:14:34,671 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 18:14:34,671 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 91 [2021-11-13 18:14:34,671 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 18:14:34,910 INFO L129 PetriNetUnfolder]: 30/171 cut-off events. [2021-11-13 18:14:34,910 INFO L130 PetriNetUnfolder]: For 43/67 co-relation queries the response was YES. [2021-11-13 18:14:34,915 INFO L84 FinitePrefix]: Finished finitePrefix Result has 313 conditions, 171 events. 30/171 cut-off events. For 43/67 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 521 event pairs, 3 based on Foata normal form. 4/169 useless extension candidates. Maximal degree in co-relation 291. Up to 21 conditions per place. [2021-11-13 18:14:34,917 INFO L132 encePairwiseOnDemand]: 83/91 looper letters, 13 selfloop transitions, 4 changer transitions 18/93 dead transitions. [2021-11-13 18:14:34,918 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 93 transitions, 307 flow [2021-11-13 18:14:34,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-13 18:14:34,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-11-13 18:14:34,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 767 transitions. [2021-11-13 18:14:34,923 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8428571428571429 [2021-11-13 18:14:34,924 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 767 transitions. [2021-11-13 18:14:34,924 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 767 transitions. [2021-11-13 18:14:34,925 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 18:14:34,925 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 767 transitions. [2021-11-13 18:14:34,928 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 76.7) internal successors, (767), 10 states have internal predecessors, (767), 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) [2021-11-13 18:14:34,931 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 91.0) internal successors, (1001), 11 states have internal predecessors, (1001), 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) [2021-11-13 18:14:34,932 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 91.0) internal successors, (1001), 11 states have internal predecessors, (1001), 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) [2021-11-13 18:14:34,933 INFO L186 Difference]: Start difference. First operand has 95 places, 72 transitions, 170 flow. Second operand 10 states and 767 transitions. [2021-11-13 18:14:34,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 93 transitions, 307 flow [2021-11-13 18:14:34,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 93 transitions, 273 flow, removed 14 selfloop flow, removed 8 redundant places. [2021-11-13 18:14:34,941 INFO L242 Difference]: Finished difference. Result has 97 places, 72 transitions, 184 flow [2021-11-13 18:14:34,942 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=184, PETRI_PLACES=97, PETRI_TRANSITIONS=72} [2021-11-13 18:14:34,943 INFO L334 CegarLoopForPetriNet]: 83 programPoint places, 14 predicate places. [2021-11-13 18:14:34,944 INFO L470 AbstractCegarLoop]: Abstraction has has 97 places, 72 transitions, 184 flow [2021-11-13 18:14:34,945 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 74.71428571428571) internal successors, (523), 7 states have internal predecessors, (523), 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) [2021-11-13 18:14:34,945 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 18:14:34,945 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:14:34,945 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-13 18:14:34,946 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-13 18:14:34,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:14:34,947 INFO L85 PathProgramCache]: Analyzing trace with hash 1190273966, now seen corresponding path program 1 times [2021-11-13 18:14:34,947 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:14:34,947 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492057100] [2021-11-13 18:14:34,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:14:34,948 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:14:34,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:14:35,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:14:35,129 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:14:35,129 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492057100] [2021-11-13 18:14:35,129 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492057100] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:14:35,130 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:14:35,130 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 18:14:35,130 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885255456] [2021-11-13 18:14:35,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:14:35,131 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:14:35,134 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:14:35,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:14:35,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:14:35,137 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 91 [2021-11-13 18:14:35,139 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 72 transitions, 184 flow. Second operand has 6 states, 6 states have (on average 75.66666666666667) internal successors, (454), 6 states have internal predecessors, (454), 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) [2021-11-13 18:14:35,139 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 18:14:35,140 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 91 [2021-11-13 18:14:35,140 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 18:14:35,429 INFO L129 PetriNetUnfolder]: 96/348 cut-off events. [2021-11-13 18:14:35,429 INFO L130 PetriNetUnfolder]: For 48/49 co-relation queries the response was YES. [2021-11-13 18:14:35,433 INFO L84 FinitePrefix]: Finished finitePrefix Result has 632 conditions, 348 events. 96/348 cut-off events. For 48/49 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1643 event pairs, 15 based on Foata normal form. 8/353 useless extension candidates. Maximal degree in co-relation 592. Up to 81 conditions per place. [2021-11-13 18:14:35,435 INFO L132 encePairwiseOnDemand]: 82/91 looper letters, 15 selfloop transitions, 6 changer transitions 19/99 dead transitions. [2021-11-13 18:14:35,435 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 99 transitions, 322 flow [2021-11-13 18:14:35,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-13 18:14:35,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-11-13 18:14:35,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 708 transitions. [2021-11-13 18:14:35,439 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8644688644688645 [2021-11-13 18:14:35,440 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 708 transitions. [2021-11-13 18:14:35,440 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 708 transitions. [2021-11-13 18:14:35,441 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 18:14:35,441 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 708 transitions. [2021-11-13 18:14:35,444 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 78.66666666666667) internal successors, (708), 9 states have internal predecessors, (708), 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) [2021-11-13 18:14:35,447 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 91.0) internal successors, (910), 10 states have internal predecessors, (910), 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) [2021-11-13 18:14:35,448 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 91.0) internal successors, (910), 10 states have internal predecessors, (910), 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) [2021-11-13 18:14:35,449 INFO L186 Difference]: Start difference. First operand has 97 places, 72 transitions, 184 flow. Second operand 9 states and 708 transitions. [2021-11-13 18:14:35,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 99 transitions, 322 flow [2021-11-13 18:14:35,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 99 transitions, 296 flow, removed 8 selfloop flow, removed 10 redundant places. [2021-11-13 18:14:35,456 INFO L242 Difference]: Finished difference. Result has 95 places, 75 transitions, 214 flow [2021-11-13 18:14:35,456 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=214, PETRI_PLACES=95, PETRI_TRANSITIONS=75} [2021-11-13 18:14:35,457 INFO L334 CegarLoopForPetriNet]: 83 programPoint places, 12 predicate places. [2021-11-13 18:14:35,458 INFO L470 AbstractCegarLoop]: Abstraction has has 95 places, 75 transitions, 214 flow [2021-11-13 18:14:35,458 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 75.66666666666667) internal successors, (454), 6 states have internal predecessors, (454), 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) [2021-11-13 18:14:35,458 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 18:14:35,459 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:14:35,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-13 18:14:35,459 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-13 18:14:35,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:14:35,460 INFO L85 PathProgramCache]: Analyzing trace with hash -1107986108, now seen corresponding path program 1 times [2021-11-13 18:14:35,460 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:14:35,460 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749087880] [2021-11-13 18:14:35,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:14:35,461 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:14:35,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:14:35,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:14:35,694 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:14:35,694 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749087880] [2021-11-13 18:14:35,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749087880] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:14:35,695 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:14:35,695 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 18:14:35,696 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601937850] [2021-11-13 18:14:35,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:14:35,697 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 18:14:35,699 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:14:35,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 18:14:35,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-13 18:14:35,709 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 91 [2021-11-13 18:14:35,711 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 75 transitions, 214 flow. Second operand has 7 states, 7 states have (on average 75.57142857142857) internal successors, (529), 7 states have internal predecessors, (529), 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) [2021-11-13 18:14:35,711 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 18:14:35,711 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 91 [2021-11-13 18:14:35,711 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 18:14:35,978 INFO L129 PetriNetUnfolder]: 57/246 cut-off events. [2021-11-13 18:14:35,978 INFO L130 PetriNetUnfolder]: For 327/336 co-relation queries the response was YES. [2021-11-13 18:14:35,981 INFO L84 FinitePrefix]: Finished finitePrefix Result has 667 conditions, 246 events. 57/246 cut-off events. For 327/336 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 903 event pairs, 0 based on Foata normal form. 7/251 useless extension candidates. Maximal degree in co-relation 624. Up to 80 conditions per place. [2021-11-13 18:14:35,985 INFO L132 encePairwiseOnDemand]: 82/91 looper letters, 16 selfloop transitions, 9 changer transitions 19/103 dead transitions. [2021-11-13 18:14:35,985 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 103 transitions, 491 flow [2021-11-13 18:14:35,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-13 18:14:35,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-11-13 18:14:35,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 786 transitions. [2021-11-13 18:14:35,991 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8637362637362638 [2021-11-13 18:14:35,991 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 786 transitions. [2021-11-13 18:14:35,991 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 786 transitions. [2021-11-13 18:14:35,992 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 18:14:35,993 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 786 transitions. [2021-11-13 18:14:35,996 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 78.6) internal successors, (786), 10 states have internal predecessors, (786), 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) [2021-11-13 18:14:35,999 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 91.0) internal successors, (1001), 11 states have internal predecessors, (1001), 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) [2021-11-13 18:14:36,000 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 91.0) internal successors, (1001), 11 states have internal predecessors, (1001), 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) [2021-11-13 18:14:36,001 INFO L186 Difference]: Start difference. First operand has 95 places, 75 transitions, 214 flow. Second operand 10 states and 786 transitions. [2021-11-13 18:14:36,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 103 transitions, 491 flow [2021-11-13 18:14:36,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 103 transitions, 467 flow, removed 7 selfloop flow, removed 5 redundant places. [2021-11-13 18:14:36,015 INFO L242 Difference]: Finished difference. Result has 101 places, 78 transitions, 282 flow [2021-11-13 18:14:36,015 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=282, PETRI_PLACES=101, PETRI_TRANSITIONS=78} [2021-11-13 18:14:36,017 INFO L334 CegarLoopForPetriNet]: 83 programPoint places, 18 predicate places. [2021-11-13 18:14:36,018 INFO L470 AbstractCegarLoop]: Abstraction has has 101 places, 78 transitions, 282 flow [2021-11-13 18:14:36,018 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 75.57142857142857) internal successors, (529), 7 states have internal predecessors, (529), 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) [2021-11-13 18:14:36,019 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 18:14:36,019 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:14:36,020 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-13 18:14:36,020 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-13 18:14:36,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:14:36,024 INFO L85 PathProgramCache]: Analyzing trace with hash 908613895, now seen corresponding path program 1 times [2021-11-13 18:14:36,024 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:14:36,027 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538797714] [2021-11-13 18:14:36,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:14:36,027 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:14:36,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:14:36,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:14:36,316 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:14:36,321 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538797714] [2021-11-13 18:14:36,321 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538797714] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:14:36,321 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:14:36,321 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-13 18:14:36,322 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675040675] [2021-11-13 18:14:36,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:14:36,323 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 18:14:36,323 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:14:36,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 18:14:36,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-13 18:14:36,326 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 91 [2021-11-13 18:14:36,329 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 78 transitions, 282 flow. Second operand has 8 states, 8 states have (on average 75.5) internal successors, (604), 8 states have internal predecessors, (604), 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) [2021-11-13 18:14:36,330 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 18:14:36,331 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 91 [2021-11-13 18:14:36,331 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 18:14:36,578 INFO L129 PetriNetUnfolder]: 21/138 cut-off events. [2021-11-13 18:14:36,578 INFO L130 PetriNetUnfolder]: For 403/415 co-relation queries the response was YES. [2021-11-13 18:14:36,579 INFO L84 FinitePrefix]: Finished finitePrefix Result has 419 conditions, 138 events. 21/138 cut-off events. For 403/415 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 298 event pairs, 0 based on Foata normal form. 8/144 useless extension candidates. Maximal degree in co-relation 392. Up to 35 conditions per place. [2021-11-13 18:14:36,581 INFO L132 encePairwiseOnDemand]: 82/91 looper letters, 10 selfloop transitions, 12 changer transitions 13/94 dead transitions. [2021-11-13 18:14:36,581 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 94 transitions, 490 flow [2021-11-13 18:14:36,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-13 18:14:36,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-11-13 18:14:36,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 851 transitions. [2021-11-13 18:14:36,586 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8501498501498501 [2021-11-13 18:14:36,586 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 851 transitions. [2021-11-13 18:14:36,586 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 851 transitions. [2021-11-13 18:14:36,587 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 18:14:36,587 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 851 transitions. [2021-11-13 18:14:36,591 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 77.36363636363636) internal successors, (851), 11 states have internal predecessors, (851), 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) [2021-11-13 18:14:36,594 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 91.0) internal successors, (1092), 12 states have internal predecessors, (1092), 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) [2021-11-13 18:14:36,596 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 91.0) internal successors, (1092), 12 states have internal predecessors, (1092), 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) [2021-11-13 18:14:36,596 INFO L186 Difference]: Start difference. First operand has 101 places, 78 transitions, 282 flow. Second operand 11 states and 851 transitions. [2021-11-13 18:14:36,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 94 transitions, 490 flow [2021-11-13 18:14:36,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 94 transitions, 391 flow, removed 39 selfloop flow, removed 10 redundant places. [2021-11-13 18:14:36,603 INFO L242 Difference]: Finished difference. Result has 103 places, 78 transitions, 268 flow [2021-11-13 18:14:36,604 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=268, PETRI_PLACES=103, PETRI_TRANSITIONS=78} [2021-11-13 18:14:36,605 INFO L334 CegarLoopForPetriNet]: 83 programPoint places, 20 predicate places. [2021-11-13 18:14:36,605 INFO L470 AbstractCegarLoop]: Abstraction has has 103 places, 78 transitions, 268 flow [2021-11-13 18:14:36,606 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 75.5) internal successors, (604), 8 states have internal predecessors, (604), 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) [2021-11-13 18:14:36,606 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 18:14:36,607 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:14:36,607 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-13 18:14:36,607 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-13 18:14:36,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:14:36,608 INFO L85 PathProgramCache]: Analyzing trace with hash 806856149, now seen corresponding path program 1 times [2021-11-13 18:14:36,608 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:14:36,609 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957618984] [2021-11-13 18:14:36,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:14:36,609 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:14:36,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:14:36,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:14:36,758 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:14:36,759 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957618984] [2021-11-13 18:14:36,759 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957618984] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:14:36,759 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:14:36,760 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 18:14:36,760 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277305545] [2021-11-13 18:14:36,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:14:36,761 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 18:14:36,761 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:14:36,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 18:14:36,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-13 18:14:36,764 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 91 [2021-11-13 18:14:36,765 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 78 transitions, 268 flow. Second operand has 7 states, 7 states have (on average 75.85714285714286) internal successors, (531), 7 states have internal predecessors, (531), 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) [2021-11-13 18:14:36,765 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 18:14:36,765 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 91 [2021-11-13 18:14:36,766 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 18:14:36,899 INFO L129 PetriNetUnfolder]: 12/146 cut-off events. [2021-11-13 18:14:36,899 INFO L130 PetriNetUnfolder]: For 147/157 co-relation queries the response was YES. [2021-11-13 18:14:36,900 INFO L84 FinitePrefix]: Finished finitePrefix Result has 312 conditions, 146 events. 12/146 cut-off events. For 147/157 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 316 event pairs, 0 based on Foata normal form. 1/145 useless extension candidates. Maximal degree in co-relation 268. Up to 21 conditions per place. [2021-11-13 18:14:36,901 INFO L132 encePairwiseOnDemand]: 85/91 looper letters, 12 selfloop transitions, 1 changer transitions 7/85 dead transitions. [2021-11-13 18:14:36,902 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 85 transitions, 326 flow [2021-11-13 18:14:36,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 18:14:36,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-11-13 18:14:36,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 539 transitions. [2021-11-13 18:14:36,905 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8461538461538461 [2021-11-13 18:14:36,905 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 539 transitions. [2021-11-13 18:14:36,906 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 539 transitions. [2021-11-13 18:14:36,906 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 18:14:36,907 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 539 transitions. [2021-11-13 18:14:36,909 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 77.0) internal successors, (539), 7 states have internal predecessors, (539), 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) [2021-11-13 18:14:36,911 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 91.0) internal successors, (728), 8 states have internal predecessors, (728), 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) [2021-11-13 18:14:36,912 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 91.0) internal successors, (728), 8 states have internal predecessors, (728), 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) [2021-11-13 18:14:36,912 INFO L186 Difference]: Start difference. First operand has 103 places, 78 transitions, 268 flow. Second operand 7 states and 539 transitions. [2021-11-13 18:14:36,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 85 transitions, 326 flow [2021-11-13 18:14:36,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 85 transitions, 244 flow, removed 22 selfloop flow, removed 15 redundant places. [2021-11-13 18:14:36,918 INFO L242 Difference]: Finished difference. Result has 95 places, 78 transitions, 199 flow [2021-11-13 18:14:36,918 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=199, PETRI_PLACES=95, PETRI_TRANSITIONS=78} [2021-11-13 18:14:36,919 INFO L334 CegarLoopForPetriNet]: 83 programPoint places, 12 predicate places. [2021-11-13 18:14:36,920 INFO L470 AbstractCegarLoop]: Abstraction has has 95 places, 78 transitions, 199 flow [2021-11-13 18:14:36,920 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 75.85714285714286) internal successors, (531), 7 states have internal predecessors, (531), 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) [2021-11-13 18:14:36,920 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 18:14:36,921 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:14:36,921 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-13 18:14:36,921 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-13 18:14:36,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:14:36,922 INFO L85 PathProgramCache]: Analyzing trace with hash -789473783, now seen corresponding path program 2 times [2021-11-13 18:14:36,922 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:14:36,923 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115369131] [2021-11-13 18:14:36,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:14:36,923 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:14:36,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:14:37,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:14:37,051 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:14:37,051 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115369131] [2021-11-13 18:14:37,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115369131] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:14:37,051 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:14:37,052 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 18:14:37,052 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182428080] [2021-11-13 18:14:37,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:14:37,053 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 18:14:37,053 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:14:37,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 18:14:37,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-13 18:14:37,055 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 91 [2021-11-13 18:14:37,057 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 78 transitions, 199 flow. Second operand has 7 states, 7 states have (on average 75.0) internal successors, (525), 7 states have internal predecessors, (525), 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) [2021-11-13 18:14:37,057 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 18:14:37,057 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 91 [2021-11-13 18:14:37,057 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 18:14:37,181 INFO L129 PetriNetUnfolder]: 16/151 cut-off events. [2021-11-13 18:14:37,181 INFO L130 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2021-11-13 18:14:37,182 INFO L84 FinitePrefix]: Finished finitePrefix Result has 247 conditions, 151 events. 16/151 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 434 event pairs, 2 based on Foata normal form. 1/148 useless extension candidates. Maximal degree in co-relation 239. Up to 16 conditions per place. [2021-11-13 18:14:37,182 INFO L132 encePairwiseOnDemand]: 85/91 looper letters, 0 selfloop transitions, 0 changer transitions 80/80 dead transitions. [2021-11-13 18:14:37,182 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 80 transitions, 240 flow [2021-11-13 18:14:37,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 18:14:37,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-11-13 18:14:37,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 529 transitions. [2021-11-13 18:14:37,185 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8304552590266876 [2021-11-13 18:14:37,185 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 529 transitions. [2021-11-13 18:14:37,186 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 529 transitions. [2021-11-13 18:14:37,186 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 18:14:37,186 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 529 transitions. [2021-11-13 18:14:37,188 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 75.57142857142857) internal successors, (529), 7 states have internal predecessors, (529), 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) [2021-11-13 18:14:37,191 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 91.0) internal successors, (728), 8 states have internal predecessors, (728), 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) [2021-11-13 18:14:37,191 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 91.0) internal successors, (728), 8 states have internal predecessors, (728), 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) [2021-11-13 18:14:37,192 INFO L186 Difference]: Start difference. First operand has 95 places, 78 transitions, 199 flow. Second operand 7 states and 529 transitions. [2021-11-13 18:14:37,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 80 transitions, 240 flow [2021-11-13 18:14:37,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 80 transitions, 233 flow, removed 3 selfloop flow, removed 4 redundant places. [2021-11-13 18:14:37,194 INFO L242 Difference]: Finished difference. Result has 91 places, 0 transitions, 0 flow [2021-11-13 18:14:37,195 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=91, PETRI_TRANSITIONS=0} [2021-11-13 18:14:37,196 INFO L334 CegarLoopForPetriNet]: 83 programPoint places, 8 predicate places. [2021-11-13 18:14:37,196 INFO L470 AbstractCegarLoop]: Abstraction has has 91 places, 0 transitions, 0 flow [2021-11-13 18:14:37,196 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 75.0) internal successors, (525), 7 states have internal predecessors, (525), 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) [2021-11-13 18:14:37,199 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2021-11-13 18:14:37,200 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 4 remaining) [2021-11-13 18:14:37,200 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (1 of 4 remaining) [2021-11-13 18:14:37,200 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION (0 of 4 remaining) [2021-11-13 18:14:37,200 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-13 18:14:37,205 INFO L732 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1] [2021-11-13 18:14:37,207 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-11-13 18:14:37,208 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-13 18:14:37,212 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.11 06:14:37 BasicIcfg [2021-11-13 18:14:37,212 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-13 18:14:37,213 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-13 18:14:37,213 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-13 18:14:37,213 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-13 18:14:37,214 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:14:33" (3/4) ... [2021-11-13 18:14:37,217 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-13 18:14:37,224 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2021-11-13 18:14:37,225 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2021-11-13 18:14:37,225 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2021-11-13 18:14:37,230 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2021-11-13 18:14:37,231 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-11-13 18:14:37,231 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-13 18:14:37,231 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-13 18:14:37,267 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_023d613b-e14f-47be-bef4-fb0decf9a818/bin/uautomizer-YU5uOKAj3y/witness.graphml [2021-11-13 18:14:37,267 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-13 18:14:37,268 INFO L158 Benchmark]: Toolchain (without parser) took 5650.20ms. Allocated memory was 121.6MB in the beginning and 146.8MB in the end (delta: 25.2MB). Free memory was 86.0MB in the beginning and 65.7MB in the end (delta: 20.3MB). Peak memory consumption was 45.0MB. Max. memory is 16.1GB. [2021-11-13 18:14:37,269 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 83.9MB. Free memory was 40.4MB in the beginning and 40.3MB in the end (delta: 76.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 18:14:37,269 INFO L158 Benchmark]: CACSL2BoogieTranslator took 823.07ms. Allocated memory is still 121.6MB. Free memory was 85.7MB in the beginning and 86.1MB in the end (delta: -401.5kB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-13 18:14:37,270 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.13ms. Allocated memory is still 121.6MB. Free memory was 86.1MB in the beginning and 84.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-13 18:14:37,270 INFO L158 Benchmark]: Boogie Preprocessor took 32.67ms. Allocated memory is still 121.6MB. Free memory was 84.1MB in the beginning and 82.9MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 18:14:37,270 INFO L158 Benchmark]: RCFGBuilder took 545.78ms. Allocated memory is still 121.6MB. Free memory was 82.9MB in the beginning and 70.5MB in the end (delta: 12.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-13 18:14:37,271 INFO L158 Benchmark]: TraceAbstraction took 4129.91ms. Allocated memory was 121.6MB in the beginning and 146.8MB in the end (delta: 25.2MB). Free memory was 70.3MB in the beginning and 68.9MB in the end (delta: 1.4MB). Peak memory consumption was 28.7MB. Max. memory is 16.1GB. [2021-11-13 18:14:37,271 INFO L158 Benchmark]: Witness Printer took 54.79ms. Allocated memory is still 146.8MB. Free memory was 68.9MB in the beginning and 65.7MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-13 18:14:37,274 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 83.9MB. Free memory was 40.4MB in the beginning and 40.3MB in the end (delta: 76.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 823.07ms. Allocated memory is still 121.6MB. Free memory was 85.7MB in the beginning and 86.1MB in the end (delta: -401.5kB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 55.13ms. Allocated memory is still 121.6MB. Free memory was 86.1MB in the beginning and 84.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 32.67ms. Allocated memory is still 121.6MB. Free memory was 84.1MB in the beginning and 82.9MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 545.78ms. Allocated memory is still 121.6MB. Free memory was 82.9MB in the beginning and 70.5MB in the end (delta: 12.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 4129.91ms. Allocated memory was 121.6MB in the beginning and 146.8MB in the end (delta: 25.2MB). Free memory was 70.3MB in the beginning and 68.9MB in the end (delta: 1.4MB). Peak memory consumption was 28.7MB. Max. memory is 16.1GB. * Witness Printer took 54.79ms. Allocated memory is still 146.8MB. Free memory was 68.9MB in the beginning and 65.7MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s 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, 113 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.1s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.9s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 163 SdHoareTripleChecker+Valid, 443.13ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 163 mSDsluCounter, 184 SdHoareTripleChecker+Invalid, 343.81ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 236 mSDsCounter, 52 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 386 IncrementalHoareTripleChecker+Invalid, 438 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 52 mSolverCounterUnsat, 42 mSDtfsCounter, 386 mSolverCounterSat, 12.27ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 87 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=282occurred in iteration=4, InterpolantAutomatonStates: 63, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 425 NumberOfCodeBlocks, 425 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 418 ConstructedInterpolants, 0 QuantifiedInterpolants, 1148 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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! [2021-11-13 18:14:37,326 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_023d613b-e14f-47be-bef4-fb0decf9a818/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE