./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe034_tso.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a015c169-13dd-42c4-91f2-f6781b153896/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a015c169-13dd-42c4-91f2-f6781b153896/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a015c169-13dd-42c4-91f2-f6781b153896/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a015c169-13dd-42c4-91f2-f6781b153896/bin/uautomizer-j4sWxH34Be/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe034_tso.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a015c169-13dd-42c4-91f2-f6781b153896/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a015c169-13dd-42c4-91f2-f6781b153896/bin/uautomizer-j4sWxH34Be --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 f95cec1ef19619129f583fb8c66d7deea9b3c11be41d52b59a1e2cd5f199d72e ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-21 20:00:12,245 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 20:00:12,247 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 20:00:12,309 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 20:00:12,310 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 20:00:12,317 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 20:00:12,322 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 20:00:12,328 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 20:00:12,331 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 20:00:12,340 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 20:00:12,341 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 20:00:12,343 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 20:00:12,344 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 20:00:12,348 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 20:00:12,351 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 20:00:12,356 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 20:00:12,360 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 20:00:12,361 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 20:00:12,367 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 20:00:12,370 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 20:00:12,377 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 20:00:12,379 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 20:00:12,382 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 20:00:12,383 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 20:00:12,388 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 20:00:12,390 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 20:00:12,390 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 20:00:12,393 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 20:00:12,394 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 20:00:12,396 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 20:00:12,396 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 20:00:12,398 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 20:00:12,400 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 20:00:12,402 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 20:00:12,405 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 20:00:12,405 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 20:00:12,406 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 20:00:12,407 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 20:00:12,407 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 20:00:12,408 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 20:00:12,409 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 20:00:12,410 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a015c169-13dd-42c4-91f2-f6781b153896/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-21 20:00:12,464 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 20:00:12,464 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 20:00:12,464 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 20:00:12,465 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 20:00:12,466 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 20:00:12,467 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 20:00:12,467 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 20:00:12,467 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 20:00:12,468 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 20:00:12,468 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 20:00:12,468 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 20:00:12,468 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 20:00:12,469 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-21 20:00:12,469 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 20:00:12,469 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-21 20:00:12,469 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 20:00:12,470 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 20:00:12,470 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 20:00:12,470 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-21 20:00:12,471 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 20:00:12,471 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 20:00:12,471 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 20:00:12,471 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 20:00:12,472 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 20:00:12,472 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 20:00:12,472 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-21 20:00:12,473 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 20:00:12,473 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-21 20:00:12,473 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-21 20:00:12,474 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-21 20:00:12,474 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-21 20:00:12,474 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 20:00:12,474 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_a015c169-13dd-42c4-91f2-f6781b153896/bin/uautomizer-j4sWxH34Be/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a015c169-13dd-42c4-91f2-f6781b153896/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f95cec1ef19619129f583fb8c66d7deea9b3c11be41d52b59a1e2cd5f199d72e [2021-10-21 20:00:12,813 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 20:00:12,861 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 20:00:12,865 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 20:00:12,866 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 20:00:12,867 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 20:00:12,868 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a015c169-13dd-42c4-91f2-f6781b153896/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/pthread-wmm/safe034_tso.i [2021-10-21 20:00:12,969 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a015c169-13dd-42c4-91f2-f6781b153896/bin/uautomizer-j4sWxH34Be/data/206b00b88/41d85ab2f4354fb1ad6ececd728aba18/FLAG2bdc77fc7 [2021-10-21 20:00:13,596 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 20:00:13,596 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a015c169-13dd-42c4-91f2-f6781b153896/sv-benchmarks/c/pthread-wmm/safe034_tso.i [2021-10-21 20:00:13,629 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a015c169-13dd-42c4-91f2-f6781b153896/bin/uautomizer-j4sWxH34Be/data/206b00b88/41d85ab2f4354fb1ad6ececd728aba18/FLAG2bdc77fc7 [2021-10-21 20:00:13,882 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a015c169-13dd-42c4-91f2-f6781b153896/bin/uautomizer-j4sWxH34Be/data/206b00b88/41d85ab2f4354fb1ad6ececd728aba18 [2021-10-21 20:00:13,886 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 20:00:13,888 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 20:00:13,890 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 20:00:13,891 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 20:00:13,895 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 20:00:13,896 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:00:13" (1/1) ... [2021-10-21 20:00:13,898 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69de744e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:00:13, skipping insertion in model container [2021-10-21 20:00:13,898 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:00:13" (1/1) ... [2021-10-21 20:00:13,908 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 20:00:13,971 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 20:00:14,190 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_a015c169-13dd-42c4-91f2-f6781b153896/sv-benchmarks/c/pthread-wmm/safe034_tso.i[945,958] [2021-10-21 20:00:14,404 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:00:14,415 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 20:00:14,430 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_a015c169-13dd-42c4-91f2-f6781b153896/sv-benchmarks/c/pthread-wmm/safe034_tso.i[945,958] [2021-10-21 20:00:14,496 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:00:14,566 INFO L208 MainTranslator]: Completed translation [2021-10-21 20:00:14,567 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:00:14 WrapperNode [2021-10-21 20:00:14,568 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 20:00:14,569 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 20:00:14,569 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 20:00:14,570 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 20:00:14,580 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:00:14" (1/1) ... [2021-10-21 20:00:14,628 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:00:14" (1/1) ... [2021-10-21 20:00:14,655 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 20:00:14,656 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 20:00:14,656 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 20:00:14,656 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 20:00:14,666 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:00:14" (1/1) ... [2021-10-21 20:00:14,667 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:00:14" (1/1) ... [2021-10-21 20:00:14,670 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:00:14" (1/1) ... [2021-10-21 20:00:14,670 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:00:14" (1/1) ... [2021-10-21 20:00:14,678 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:00:14" (1/1) ... [2021-10-21 20:00:14,681 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:00:14" (1/1) ... [2021-10-21 20:00:14,683 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:00:14" (1/1) ... [2021-10-21 20:00:14,687 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 20:00:14,688 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 20:00:14,688 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 20:00:14,688 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 20:00:14,689 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:00:14" (1/1) ... [2021-10-21 20:00:14,700 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 20:00:14,717 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a015c169-13dd-42c4-91f2-f6781b153896/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:00:14,736 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a015c169-13dd-42c4-91f2-f6781b153896/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-21 20:00:14,742 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a015c169-13dd-42c4-91f2-f6781b153896/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-21 20:00:14,787 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-21 20:00:14,788 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-21 20:00:14,788 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 20:00:14,788 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-21 20:00:14,788 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-10-21 20:00:14,789 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-10-21 20:00:14,789 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-10-21 20:00:14,789 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-10-21 20:00:14,789 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-10-21 20:00:14,789 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-10-21 20:00:14,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-21 20:00:14,790 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-21 20:00:14,790 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 20:00:14,790 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 20:00:14,792 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-21 20:00:15,275 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 20:00:15,275 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-10-21 20:00:15,278 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:00:15 BoogieIcfgContainer [2021-10-21 20:00:15,279 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 20:00:15,281 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-21 20:00:15,281 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-21 20:00:15,286 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-21 20:00:15,287 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 08:00:13" (1/3) ... [2021-10-21 20:00:15,288 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@787d49c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 08:00:15, skipping insertion in model container [2021-10-21 20:00:15,288 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:00:14" (2/3) ... [2021-10-21 20:00:15,289 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@787d49c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 08:00:15, skipping insertion in model container [2021-10-21 20:00:15,289 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:00:15" (3/3) ... [2021-10-21 20:00:15,291 INFO L111 eAbstractionObserver]: Analyzing ICFG safe034_tso.i [2021-10-21 20:00:15,298 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-21 20:00:15,298 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-21 20:00:15,299 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-21 20:00:15,299 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-21 20:00:15,334 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:00:15,335 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:00:15,335 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:00:15,335 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:00:15,336 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:00:15,336 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:00:15,336 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:00:15,337 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:00:15,337 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:00:15,338 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:00:15,338 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:00:15,338 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:00:15,339 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:00:15,339 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:00:15,339 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:00:15,340 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:00:15,340 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:00:15,340 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:00:15,340 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:00:15,341 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:00:15,341 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:00:15,342 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:00:15,342 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:00:15,342 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:00:15,343 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:00:15,343 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:00:15,343 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:00:15,344 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:00:15,344 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:00:15,344 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:00:15,345 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:00:15,345 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:00:15,345 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:00:15,346 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:00:15,346 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:00:15,346 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:00:15,350 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:00:15,350 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:00:15,351 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:00:15,351 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:00:15,357 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:00:15,357 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:00:15,358 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:00:15,358 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:00:15,362 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:00:15,364 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:00:15,364 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:00:15,365 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:00:15,368 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-10-21 20:00:15,450 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-21 20:00:15,461 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 [2021-10-21 20:00:15,462 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-10-21 20:00:15,484 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 92 places, 84 transitions, 183 flow [2021-10-21 20:00:15,587 INFO L129 PetriNetUnfolder]: 2/81 cut-off events. [2021-10-21 20:00:15,587 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-21 20:00:15,592 INFO L84 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 81 events. 2/81 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 47 event pairs, 0 based on Foata normal form. 0/78 useless extension candidates. Maximal degree in co-relation 63. Up to 2 conditions per place. [2021-10-21 20:00:15,592 INFO L82 GeneralOperation]: Start removeDead. Operand has 92 places, 84 transitions, 183 flow [2021-10-21 20:00:15,598 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 78 places, 69 transitions, 147 flow [2021-10-21 20:00:15,621 INFO L129 PetriNetUnfolder]: 1/68 cut-off events. [2021-10-21 20:00:15,621 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-21 20:00:15,622 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 20:00:15,622 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] [2021-10-21 20:00:15,623 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-21 20:00:15,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:00:15,630 INFO L82 PathProgramCache]: Analyzing trace with hash -291660010, now seen corresponding path program 1 times [2021-10-21 20:00:15,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:00:15,642 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881043441] [2021-10-21 20:00:15,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:00:15,644 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:00:15,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:00:16,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:00:16,304 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:00:16,304 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881043441] [2021-10-21 20:00:16,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881043441] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:00:16,306 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:00:16,306 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-21 20:00:16,308 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600643613] [2021-10-21 20:00:16,321 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-21 20:00:16,321 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:00:16,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 20:00:16,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-21 20:00:16,346 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 84 [2021-10-21 20:00:16,352 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 69 transitions, 147 flow. Second operand has 6 states, 6 states have (on average 72.16666666666667) internal successors, (433), 6 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:00:16,353 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 20:00:16,353 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 84 [2021-10-21 20:00:16,355 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 20:00:16,552 INFO L129 PetriNetUnfolder]: 24/146 cut-off events. [2021-10-21 20:00:16,553 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-21 20:00:16,555 INFO L84 FinitePrefix]: Finished finitePrefix Result has 217 conditions, 146 events. 24/146 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 440 event pairs, 5 based on Foata normal form. 6/149 useless extension candidates. Maximal degree in co-relation 186. Up to 31 conditions per place. [2021-10-21 20:00:16,557 INFO L132 encePairwiseOnDemand]: 76/84 looper letters, 8 selfloop transitions, 3 changer transitions 19/89 dead transitions. [2021-10-21 20:00:16,558 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 89 transitions, 247 flow [2021-10-21 20:00:16,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-21 20:00:16,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-10-21 20:00:16,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 673 transitions. [2021-10-21 20:00:16,581 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8902116402116402 [2021-10-21 20:00:16,582 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 673 transitions. [2021-10-21 20:00:16,583 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 673 transitions. [2021-10-21 20:00:16,587 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 20:00:16,590 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 673 transitions. [2021-10-21 20:00:16,601 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.77777777777777) internal successors, (673), 9 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:00:16,613 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 84.0) internal successors, (840), 10 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:00:16,614 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 84.0) internal successors, (840), 10 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:00:16,617 INFO L186 Difference]: Start difference. First operand has 78 places, 69 transitions, 147 flow. Second operand 9 states and 673 transitions. [2021-10-21 20:00:16,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 89 transitions, 247 flow [2021-10-21 20:00:16,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 89 transitions, 244 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-10-21 20:00:16,629 INFO L242 Difference]: Finished difference. Result has 90 places, 70 transitions, 185 flow [2021-10-21 20:00:16,631 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=185, PETRI_PLACES=90, PETRI_TRANSITIONS=70} [2021-10-21 20:00:16,633 INFO L334 CegarLoopForPetriNet]: 78 programPoint places, 12 predicate places. [2021-10-21 20:00:16,633 INFO L470 AbstractCegarLoop]: Abstraction has has 90 places, 70 transitions, 185 flow [2021-10-21 20:00:16,634 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 72.16666666666667) internal successors, (433), 6 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:00:16,634 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 20:00:16,635 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] [2021-10-21 20:00:16,635 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-21 20:00:16,635 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-21 20:00:16,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:00:16,636 INFO L82 PathProgramCache]: Analyzing trace with hash -1187425577, now seen corresponding path program 1 times [2021-10-21 20:00:16,637 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:00:16,637 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097912783] [2021-10-21 20:00:16,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:00:16,638 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:00:16,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:00:16,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:00:16,917 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:00:16,918 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097912783] [2021-10-21 20:00:16,918 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097912783] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:00:16,920 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:00:16,920 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-21 20:00:16,920 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588247700] [2021-10-21 20:00:16,922 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-21 20:00:16,922 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:00:16,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 20:00:16,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-21 20:00:16,926 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 84 [2021-10-21 20:00:16,928 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 70 transitions, 185 flow. Second operand has 6 states, 6 states have (on average 71.16666666666667) internal successors, (427), 6 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:00:16,928 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 20:00:16,928 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 84 [2021-10-21 20:00:16,928 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 20:00:17,346 INFO L129 PetriNetUnfolder]: 166/449 cut-off events. [2021-10-21 20:00:17,346 INFO L130 PetriNetUnfolder]: For 196/196 co-relation queries the response was YES. [2021-10-21 20:00:17,376 INFO L84 FinitePrefix]: Finished finitePrefix Result has 921 conditions, 449 events. 166/449 cut-off events. For 196/196 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2471 event pairs, 14 based on Foata normal form. 0/416 useless extension candidates. Maximal degree in co-relation 884. Up to 104 conditions per place. [2021-10-21 20:00:17,381 INFO L132 encePairwiseOnDemand]: 74/84 looper letters, 21 selfloop transitions, 15 changer transitions 5/100 dead transitions. [2021-10-21 20:00:17,381 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 100 transitions, 327 flow [2021-10-21 20:00:17,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-21 20:00:17,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-10-21 20:00:17,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 743 transitions. [2021-10-21 20:00:17,396 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8845238095238095 [2021-10-21 20:00:17,399 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 743 transitions. [2021-10-21 20:00:17,399 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 743 transitions. [2021-10-21 20:00:17,401 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 20:00:17,402 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 743 transitions. [2021-10-21 20:00:17,408 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 74.3) internal successors, (743), 10 states have internal predecessors, (743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:00:17,414 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 84.0) internal successors, (924), 11 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:00:17,415 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 84.0) internal successors, (924), 11 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:00:17,416 INFO L186 Difference]: Start difference. First operand has 90 places, 70 transitions, 185 flow. Second operand 10 states and 743 transitions. [2021-10-21 20:00:17,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 100 transitions, 327 flow [2021-10-21 20:00:17,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 100 transitions, 318 flow, removed 3 selfloop flow, removed 4 redundant places. [2021-10-21 20:00:17,434 INFO L242 Difference]: Finished difference. Result has 95 places, 83 transitions, 285 flow [2021-10-21 20:00:17,436 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=285, PETRI_PLACES=95, PETRI_TRANSITIONS=83} [2021-10-21 20:00:17,437 INFO L334 CegarLoopForPetriNet]: 78 programPoint places, 17 predicate places. [2021-10-21 20:00:17,438 INFO L470 AbstractCegarLoop]: Abstraction has has 95 places, 83 transitions, 285 flow [2021-10-21 20:00:17,438 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 71.16666666666667) internal successors, (427), 6 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:00:17,439 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 20:00:17,439 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] [2021-10-21 20:00:17,440 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-21 20:00:17,441 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-21 20:00:17,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:00:17,447 INFO L82 PathProgramCache]: Analyzing trace with hash 954058388, now seen corresponding path program 1 times [2021-10-21 20:00:17,447 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:00:17,448 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105868444] [2021-10-21 20:00:17,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:00:17,448 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:00:17,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:00:17,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:00:17,724 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:00:17,724 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105868444] [2021-10-21 20:00:17,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105868444] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:00:17,725 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:00:17,725 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-21 20:00:17,725 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381344642] [2021-10-21 20:00:17,726 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-21 20:00:17,728 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:00:17,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-21 20:00:17,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-10-21 20:00:17,732 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 84 [2021-10-21 20:00:17,734 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 83 transitions, 285 flow. Second operand has 7 states, 7 states have (on average 71.14285714285714) internal successors, (498), 7 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:00:17,736 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 20:00:17,737 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 84 [2021-10-21 20:00:17,737 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 20:00:18,105 INFO L129 PetriNetUnfolder]: 146/418 cut-off events. [2021-10-21 20:00:18,105 INFO L130 PetriNetUnfolder]: For 862/916 co-relation queries the response was YES. [2021-10-21 20:00:18,110 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1365 conditions, 418 events. 146/418 cut-off events. For 862/916 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2301 event pairs, 4 based on Foata normal form. 24/424 useless extension candidates. Maximal degree in co-relation 1323. Up to 152 conditions per place. [2021-10-21 20:00:18,114 INFO L132 encePairwiseOnDemand]: 74/84 looper letters, 20 selfloop transitions, 28 changer transitions 11/118 dead transitions. [2021-10-21 20:00:18,114 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 118 transitions, 627 flow [2021-10-21 20:00:18,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-21 20:00:18,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-10-21 20:00:18,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 965 transitions. [2021-10-21 20:00:18,120 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8836996336996337 [2021-10-21 20:00:18,120 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 965 transitions. [2021-10-21 20:00:18,120 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 965 transitions. [2021-10-21 20:00:18,122 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 20:00:18,122 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 965 transitions. [2021-10-21 20:00:18,126 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 74.23076923076923) internal successors, (965), 13 states have internal predecessors, (965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:00:18,130 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 84.0) internal successors, (1176), 14 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:00:18,132 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 84.0) internal successors, (1176), 14 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:00:18,132 INFO L186 Difference]: Start difference. First operand has 95 places, 83 transitions, 285 flow. Second operand 13 states and 965 transitions. [2021-10-21 20:00:18,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 118 transitions, 627 flow [2021-10-21 20:00:18,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 118 transitions, 625 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-10-21 20:00:18,143 INFO L242 Difference]: Finished difference. Result has 112 places, 100 transitions, 509 flow [2021-10-21 20:00:18,144 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=283, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=509, PETRI_PLACES=112, PETRI_TRANSITIONS=100} [2021-10-21 20:00:18,144 INFO L334 CegarLoopForPetriNet]: 78 programPoint places, 34 predicate places. [2021-10-21 20:00:18,144 INFO L470 AbstractCegarLoop]: Abstraction has has 112 places, 100 transitions, 509 flow [2021-10-21 20:00:18,145 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 71.14285714285714) internal successors, (498), 7 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:00:18,145 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 20:00:18,146 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] [2021-10-21 20:00:18,146 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-21 20:00:18,146 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-21 20:00:18,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:00:18,147 INFO L82 PathProgramCache]: Analyzing trace with hash 506752086, now seen corresponding path program 1 times [2021-10-21 20:00:18,147 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:00:18,148 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586752267] [2021-10-21 20:00:18,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:00:18,148 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:00:18,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:00:18,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:00:18,345 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:00:18,345 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586752267] [2021-10-21 20:00:18,345 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586752267] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:00:18,346 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:00:18,346 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-21 20:00:18,346 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009459816] [2021-10-21 20:00:18,347 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-21 20:00:18,347 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:00:18,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-21 20:00:18,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-21 20:00:18,354 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 84 [2021-10-21 20:00:18,357 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 100 transitions, 509 flow. Second operand has 7 states, 7 states have (on average 67.0) internal successors, (469), 7 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:00:18,357 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 20:00:18,357 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 84 [2021-10-21 20:00:18,358 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 20:00:18,897 INFO L129 PetriNetUnfolder]: 243/1090 cut-off events. [2021-10-21 20:00:18,898 INFO L130 PetriNetUnfolder]: For 2626/2760 co-relation queries the response was YES. [2021-10-21 20:00:18,912 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3565 conditions, 1090 events. 243/1090 cut-off events. For 2626/2760 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 9674 event pairs, 0 based on Foata normal form. 15/1051 useless extension candidates. Maximal degree in co-relation 3512. Up to 244 conditions per place. [2021-10-21 20:00:18,924 INFO L132 encePairwiseOnDemand]: 74/84 looper letters, 26 selfloop transitions, 13 changer transitions 29/151 dead transitions. [2021-10-21 20:00:18,924 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 151 transitions, 865 flow [2021-10-21 20:00:18,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-21 20:00:18,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2021-10-21 20:00:18,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 976 transitions. [2021-10-21 20:00:18,931 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8299319727891157 [2021-10-21 20:00:18,931 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 976 transitions. [2021-10-21 20:00:18,931 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 976 transitions. [2021-10-21 20:00:18,932 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 20:00:18,932 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 976 transitions. [2021-10-21 20:00:18,936 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 69.71428571428571) internal successors, (976), 14 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:00:18,941 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 84.0) internal successors, (1260), 15 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:00:18,942 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 84.0) internal successors, (1260), 15 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:00:18,942 INFO L186 Difference]: Start difference. First operand has 112 places, 100 transitions, 509 flow. Second operand 14 states and 976 transitions. [2021-10-21 20:00:18,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 151 transitions, 865 flow [2021-10-21 20:00:19,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 151 transitions, 805 flow, removed 23 selfloop flow, removed 4 redundant places. [2021-10-21 20:00:19,026 INFO L242 Difference]: Finished difference. Result has 133 places, 111 transitions, 603 flow [2021-10-21 20:00:19,027 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=449, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=603, PETRI_PLACES=133, PETRI_TRANSITIONS=111} [2021-10-21 20:00:19,027 INFO L334 CegarLoopForPetriNet]: 78 programPoint places, 55 predicate places. [2021-10-21 20:00:19,027 INFO L470 AbstractCegarLoop]: Abstraction has has 133 places, 111 transitions, 603 flow [2021-10-21 20:00:19,028 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 67.0) internal successors, (469), 7 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:00:19,028 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 20:00:19,029 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] [2021-10-21 20:00:19,029 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-21 20:00:19,030 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-21 20:00:19,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:00:19,030 INFO L82 PathProgramCache]: Analyzing trace with hash 1867086892, now seen corresponding path program 2 times [2021-10-21 20:00:19,031 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:00:19,031 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587264574] [2021-10-21 20:00:19,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:00:19,031 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:00:19,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:00:19,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:00:19,291 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:00:19,291 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587264574] [2021-10-21 20:00:19,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587264574] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:00:19,292 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:00:19,292 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-21 20:00:19,292 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890283675] [2021-10-21 20:00:19,293 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-21 20:00:19,293 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:00:19,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-21 20:00:19,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-21 20:00:19,297 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 84 [2021-10-21 20:00:19,298 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 111 transitions, 603 flow. Second operand has 8 states, 8 states have (on average 71.125) internal successors, (569), 8 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:00:19,298 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 20:00:19,298 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 84 [2021-10-21 20:00:19,298 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 20:00:19,838 INFO L129 PetriNetUnfolder]: 296/1007 cut-off events. [2021-10-21 20:00:19,838 INFO L130 PetriNetUnfolder]: For 2388/2732 co-relation queries the response was YES. [2021-10-21 20:00:19,854 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3658 conditions, 1007 events. 296/1007 cut-off events. For 2388/2732 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 8649 event pairs, 2 based on Foata normal form. 110/1049 useless extension candidates. Maximal degree in co-relation 3621. Up to 150 conditions per place. [2021-10-21 20:00:19,861 INFO L132 encePairwiseOnDemand]: 74/84 looper letters, 16 selfloop transitions, 32 changer transitions 19/137 dead transitions. [2021-10-21 20:00:19,862 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 137 transitions, 911 flow [2021-10-21 20:00:19,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-21 20:00:19,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-10-21 20:00:19,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1172 transitions. [2021-10-21 20:00:19,868 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8720238095238095 [2021-10-21 20:00:19,868 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1172 transitions. [2021-10-21 20:00:19,868 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1172 transitions. [2021-10-21 20:00:19,869 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 20:00:19,870 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1172 transitions. [2021-10-21 20:00:19,876 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 73.25) internal successors, (1172), 16 states have internal predecessors, (1172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:00:19,881 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 84.0) internal successors, (1428), 17 states have internal predecessors, (1428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:00:19,883 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 84.0) internal successors, (1428), 17 states have internal predecessors, (1428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:00:19,883 INFO L186 Difference]: Start difference. First operand has 133 places, 111 transitions, 603 flow. Second operand 16 states and 1172 transitions. [2021-10-21 20:00:19,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 137 transitions, 911 flow [2021-10-21 20:00:19,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 137 transitions, 833 flow, removed 39 selfloop flow, removed 12 redundant places. [2021-10-21 20:00:19,914 INFO L242 Difference]: Finished difference. Result has 134 places, 112 transitions, 631 flow [2021-10-21 20:00:19,914 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=525, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=631, PETRI_PLACES=134, PETRI_TRANSITIONS=112} [2021-10-21 20:00:19,915 INFO L334 CegarLoopForPetriNet]: 78 programPoint places, 56 predicate places. [2021-10-21 20:00:19,915 INFO L470 AbstractCegarLoop]: Abstraction has has 134 places, 112 transitions, 631 flow [2021-10-21 20:00:19,916 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 71.125) internal successors, (569), 8 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:00:19,916 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 20:00:19,916 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] [2021-10-21 20:00:19,916 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-21 20:00:19,917 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-21 20:00:19,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:00:19,918 INFO L82 PathProgramCache]: Analyzing trace with hash 894446752, now seen corresponding path program 1 times [2021-10-21 20:00:19,918 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:00:19,918 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283525277] [2021-10-21 20:00:19,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:00:19,919 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:00:19,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:00:20,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:00:20,096 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:00:20,096 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283525277] [2021-10-21 20:00:20,097 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283525277] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:00:20,097 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:00:20,097 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-21 20:00:20,097 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677826527] [2021-10-21 20:00:20,098 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-21 20:00:20,098 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:00:20,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 20:00:20,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-21 20:00:20,101 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 84 [2021-10-21 20:00:20,102 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 112 transitions, 631 flow. Second operand has 6 states, 6 states have (on average 72.5) internal successors, (435), 6 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:00:20,102 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 20:00:20,102 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 84 [2021-10-21 20:00:20,102 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 20:00:20,431 INFO L129 PetriNetUnfolder]: 220/1114 cut-off events. [2021-10-21 20:00:20,431 INFO L130 PetriNetUnfolder]: For 3268/3367 co-relation queries the response was YES. [2021-10-21 20:00:20,445 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3777 conditions, 1114 events. 220/1114 cut-off events. For 3268/3367 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 10975 event pairs, 2 based on Foata normal form. 1/1054 useless extension candidates. Maximal degree in co-relation 3717. Up to 173 conditions per place. [2021-10-21 20:00:20,449 INFO L132 encePairwiseOnDemand]: 78/84 looper letters, 8 selfloop transitions, 5 changer transitions 10/116 dead transitions. [2021-10-21 20:00:20,449 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 116 transitions, 685 flow [2021-10-21 20:00:20,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-21 20:00:20,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-10-21 20:00:20,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 441 transitions. [2021-10-21 20:00:20,452 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.875 [2021-10-21 20:00:20,452 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 441 transitions. [2021-10-21 20:00:20,453 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 441 transitions. [2021-10-21 20:00:20,453 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 20:00:20,454 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 441 transitions. [2021-10-21 20:00:20,455 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 73.5) internal successors, (441), 6 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:00:20,457 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 84.0) internal successors, (588), 7 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:00:20,458 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 84.0) internal successors, (588), 7 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:00:20,458 INFO L186 Difference]: Start difference. First operand has 134 places, 112 transitions, 631 flow. Second operand 6 states and 441 transitions. [2021-10-21 20:00:20,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 116 transitions, 685 flow [2021-10-21 20:00:20,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 116 transitions, 588 flow, removed 15 selfloop flow, removed 15 redundant places. [2021-10-21 20:00:20,516 INFO L242 Difference]: Finished difference. Result has 125 places, 106 transitions, 518 flow [2021-10-21 20:00:20,516 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=534, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=518, PETRI_PLACES=125, PETRI_TRANSITIONS=106} [2021-10-21 20:00:20,516 INFO L334 CegarLoopForPetriNet]: 78 programPoint places, 47 predicate places. [2021-10-21 20:00:20,517 INFO L470 AbstractCegarLoop]: Abstraction has has 125 places, 106 transitions, 518 flow [2021-10-21 20:00:20,517 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 72.5) internal successors, (435), 6 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:00:20,517 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 20:00:20,517 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] [2021-10-21 20:00:20,518 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-21 20:00:20,518 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-21 20:00:20,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:00:20,519 INFO L82 PathProgramCache]: Analyzing trace with hash 1625891424, now seen corresponding path program 2 times [2021-10-21 20:00:20,519 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:00:20,519 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627103663] [2021-10-21 20:00:20,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:00:20,519 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:00:20,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:00:20,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:00:20,652 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:00:20,653 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627103663] [2021-10-21 20:00:20,653 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627103663] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:00:20,653 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:00:20,653 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-21 20:00:20,654 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065547429] [2021-10-21 20:00:20,654 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-21 20:00:20,654 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:00:20,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-21 20:00:20,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-21 20:00:20,656 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 84 [2021-10-21 20:00:20,657 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 106 transitions, 518 flow. Second operand has 7 states, 7 states have (on average 67.14285714285714) internal successors, (470), 7 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:00:20,658 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 20:00:20,658 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 84 [2021-10-21 20:00:20,658 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 20:00:20,897 INFO L129 PetriNetUnfolder]: 120/612 cut-off events. [2021-10-21 20:00:20,897 INFO L130 PetriNetUnfolder]: For 885/899 co-relation queries the response was YES. [2021-10-21 20:00:20,902 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1737 conditions, 612 events. 120/612 cut-off events. For 885/899 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 5005 event pairs, 0 based on Foata normal form. 3/583 useless extension candidates. Maximal degree in co-relation 1714. Up to 75 conditions per place. [2021-10-21 20:00:20,903 INFO L132 encePairwiseOnDemand]: 74/84 looper letters, 0 selfloop transitions, 0 changer transitions 112/112 dead transitions. [2021-10-21 20:00:20,904 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 112 transitions, 617 flow [2021-10-21 20:00:20,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-21 20:00:20,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-10-21 20:00:20,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 543 transitions. [2021-10-21 20:00:20,906 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8080357142857143 [2021-10-21 20:00:20,907 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 543 transitions. [2021-10-21 20:00:20,907 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 543 transitions. [2021-10-21 20:00:20,907 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 20:00:20,908 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 543 transitions. [2021-10-21 20:00:20,910 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 67.875) internal successors, (543), 8 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:00:20,912 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 84.0) internal successors, (756), 9 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:00:20,913 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 84.0) internal successors, (756), 9 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:00:20,913 INFO L186 Difference]: Start difference. First operand has 125 places, 106 transitions, 518 flow. Second operand 8 states and 543 transitions. [2021-10-21 20:00:20,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 112 transitions, 617 flow [2021-10-21 20:00:20,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 112 transitions, 581 flow, removed 7 selfloop flow, removed 6 redundant places. [2021-10-21 20:00:20,926 INFO L242 Difference]: Finished difference. Result has 121 places, 0 transitions, 0 flow [2021-10-21 20:00:20,926 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=481, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=121, PETRI_TRANSITIONS=0} [2021-10-21 20:00:20,927 INFO L334 CegarLoopForPetriNet]: 78 programPoint places, 43 predicate places. [2021-10-21 20:00:20,927 INFO L470 AbstractCegarLoop]: Abstraction has has 121 places, 0 transitions, 0 flow [2021-10-21 20:00:20,927 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 67.14285714285714) internal successors, (470), 7 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:00:20,930 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 20:00:20,931 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-21 20:00:20,931 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-21 20:00:20,931 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-21 20:00:20,931 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-21 20:00:20,937 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-21 20:00:20,937 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-21 20:00:20,940 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 08:00:20 BasicIcfg [2021-10-21 20:00:20,940 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-21 20:00:20,940 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 20:00:20,940 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 20:00:20,941 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 20:00:20,941 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:00:15" (3/4) ... [2021-10-21 20:00:20,944 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-21 20:00:20,951 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2021-10-21 20:00:20,951 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2021-10-21 20:00:20,951 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2021-10-21 20:00:20,956 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2021-10-21 20:00:20,956 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-21 20:00:20,957 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-21 20:00:20,957 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-21 20:00:20,994 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a015c169-13dd-42c4-91f2-f6781b153896/bin/uautomizer-j4sWxH34Be/witness.graphml [2021-10-21 20:00:20,994 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 20:00:20,996 INFO L168 Benchmark]: Toolchain (without parser) took 7107.37 ms. Allocated memory was 113.2 MB in the beginning and 182.5 MB in the end (delta: 69.2 MB). Free memory was 72.0 MB in the beginning and 139.5 MB in the end (delta: -67.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 20:00:20,996 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 113.2 MB. Free memory was 89.9 MB in the beginning and 89.9 MB in the end (delta: 61.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:00:20,997 INFO L168 Benchmark]: CACSL2BoogieTranslator took 678.06 ms. Allocated memory is still 113.2 MB. Free memory was 71.8 MB in the beginning and 78.8 MB in the end (delta: -7.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-21 20:00:20,998 INFO L168 Benchmark]: Boogie Procedure Inliner took 86.29 ms. Allocated memory is still 113.2 MB. Free memory was 78.8 MB in the beginning and 76.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 20:00:20,998 INFO L168 Benchmark]: Boogie Preprocessor took 30.93 ms. Allocated memory is still 113.2 MB. Free memory was 76.8 MB in the beginning and 75.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 20:00:20,999 INFO L168 Benchmark]: RCFGBuilder took 591.17 ms. Allocated memory is still 113.2 MB. Free memory was 75.3 MB in the beginning and 63.1 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-21 20:00:20,999 INFO L168 Benchmark]: TraceAbstraction took 5659.00 ms. Allocated memory was 113.2 MB in the beginning and 182.5 MB in the end (delta: 69.2 MB). Free memory was 62.8 MB in the beginning and 142.7 MB in the end (delta: -79.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:00:21,000 INFO L168 Benchmark]: Witness Printer took 54.03 ms. Allocated memory is still 182.5 MB. Free memory was 142.7 MB in the beginning and 139.5 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-21 20:00:21,002 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 113.2 MB. Free memory was 89.9 MB in the beginning and 89.9 MB in the end (delta: 61.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 678.06 ms. Allocated memory is still 113.2 MB. Free memory was 71.8 MB in the beginning and 78.8 MB in the end (delta: -7.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 86.29 ms. Allocated memory is still 113.2 MB. Free memory was 78.8 MB in the beginning and 76.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 30.93 ms. Allocated memory is still 113.2 MB. Free memory was 76.8 MB in the beginning and 75.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 591.17 ms. Allocated memory is still 113.2 MB. Free memory was 75.3 MB in the beginning and 63.1 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5659.00 ms. Allocated memory was 113.2 MB in the beginning and 182.5 MB in the end (delta: 69.2 MB). Free memory was 62.8 MB in the beginning and 142.7 MB in the end (delta: -79.9 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 54.03 ms. Allocated memory is still 182.5 MB. Free memory was 142.7 MB in the beginning and 139.5 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 107 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 22.5ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 5492.5ms, OverallIterations: 7, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 3217.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 136.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 82 SDtfs, 204 SDslu, 258 SDs, 0 SdLazy, 302 SolverSat, 76 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 362.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 93 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 1008.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=631occurred in iteration=5, InterpolantAutomatonStates: 76, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 83.5ms SsaConstructionTime, 341.6ms SatisfiabilityAnalysisTime, 1365.6ms InterpolantComputationTime, 389 NumberOfCodeBlocks, 389 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 382 ConstructedInterpolants, 0 QuantifiedInterpolants, 1244 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! [2021-10-21 20:00:21,050 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a015c169-13dd-42c4-91f2-f6781b153896/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...