./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/bench-exp3x3-opt.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_826bdeae-45e0-4a54-afc5-b7ce84056701/bin/uautomizer-ZXIjhQolGL/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_826bdeae-45e0-4a54-afc5-b7ce84056701/bin/uautomizer-ZXIjhQolGL/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_826bdeae-45e0-4a54-afc5-b7ce84056701/bin/uautomizer-ZXIjhQolGL/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_826bdeae-45e0-4a54-afc5-b7ce84056701/bin/uautomizer-ZXIjhQolGL/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/bench-exp3x3-opt.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_826bdeae-45e0-4a54-afc5-b7ce84056701/bin/uautomizer-ZXIjhQolGL/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_826bdeae-45e0-4a54-afc5-b7ce84056701/bin/uautomizer-ZXIjhQolGL --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 4c1c24b29e2a448aa58292c6eb9ff7da7a6479c4a0ee37fcfe55a998096eea30 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 04:38:26,497 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 04:38:26,499 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 04:38:26,529 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 04:38:26,530 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 04:38:26,531 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 04:38:26,533 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 04:38:26,535 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 04:38:26,537 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 04:38:26,541 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 04:38:26,542 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 04:38:26,545 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 04:38:26,545 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 04:38:26,551 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 04:38:26,553 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 04:38:26,555 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 04:38:26,559 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 04:38:26,560 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 04:38:26,561 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 04:38:26,564 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 04:38:26,566 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 04:38:26,568 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 04:38:26,569 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 04:38:26,570 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 04:38:26,574 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 04:38:26,574 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 04:38:26,575 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 04:38:26,576 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 04:38:26,577 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 04:38:26,578 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 04:38:26,578 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 04:38:26,580 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 04:38:26,581 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 04:38:26,582 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 04:38:26,583 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 04:38:26,583 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 04:38:26,584 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 04:38:26,585 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 04:38:26,585 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 04:38:26,586 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 04:38:26,587 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 04:38:26,588 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_826bdeae-45e0-4a54-afc5-b7ce84056701/bin/uautomizer-ZXIjhQolGL/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-19 04:38:26,620 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 04:38:26,620 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 04:38:26,620 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-19 04:38:26,621 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-19 04:38:26,621 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 04:38:26,622 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 04:38:26,622 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-19 04:38:26,623 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-19 04:38:26,623 INFO L138 SettingsManager]: * Use SBE=true [2021-11-19 04:38:26,623 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 04:38:26,623 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 04:38:26,623 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 04:38:26,624 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 04:38:26,624 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 04:38:26,624 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 04:38:26,624 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 04:38:26,624 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 04:38:26,625 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 04:38:26,625 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 04:38:26,625 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 04:38:26,625 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 04:38:26,625 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 04:38:26,626 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 04:38:26,626 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 04:38:26,626 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 04:38:26,626 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 04:38:26,627 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 04:38:26,627 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 04:38:26,627 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-19 04:38:26,627 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 04:38:26,627 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-19 04:38:26,628 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-19 04:38:26,628 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 04:38:26,628 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 04:38:26,628 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_826bdeae-45e0-4a54-afc5-b7ce84056701/bin/uautomizer-ZXIjhQolGL/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_826bdeae-45e0-4a54-afc5-b7ce84056701/bin/uautomizer-ZXIjhQolGL Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4c1c24b29e2a448aa58292c6eb9ff7da7a6479c4a0ee37fcfe55a998096eea30 [2021-11-19 04:38:26,924 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 04:38:26,959 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 04:38:26,962 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 04:38:26,964 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 04:38:26,965 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 04:38:26,967 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_826bdeae-45e0-4a54-afc5-b7ce84056701/bin/uautomizer-ZXIjhQolGL/../../sv-benchmarks/c/weaver/bench-exp3x3-opt.wvr.c [2021-11-19 04:38:27,083 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_826bdeae-45e0-4a54-afc5-b7ce84056701/bin/uautomizer-ZXIjhQolGL/data/5b0965ca7/9910bd5383db433b916e1a2bcf72f6ea/FLAG600aa2d89 [2021-11-19 04:38:27,585 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 04:38:27,586 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_826bdeae-45e0-4a54-afc5-b7ce84056701/sv-benchmarks/c/weaver/bench-exp3x3-opt.wvr.c [2021-11-19 04:38:27,594 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_826bdeae-45e0-4a54-afc5-b7ce84056701/bin/uautomizer-ZXIjhQolGL/data/5b0965ca7/9910bd5383db433b916e1a2bcf72f6ea/FLAG600aa2d89 [2021-11-19 04:38:27,931 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_826bdeae-45e0-4a54-afc5-b7ce84056701/bin/uautomizer-ZXIjhQolGL/data/5b0965ca7/9910bd5383db433b916e1a2bcf72f6ea [2021-11-19 04:38:27,935 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 04:38:27,938 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 04:38:27,943 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 04:38:27,943 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 04:38:27,946 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 04:38:27,947 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:38:27" (1/1) ... [2021-11-19 04:38:27,948 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28eeab2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:38:27, skipping insertion in model container [2021-11-19 04:38:27,948 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:38:27" (1/1) ... [2021-11-19 04:38:27,956 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 04:38:27,976 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 04:38:28,208 WARN L230 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_826bdeae-45e0-4a54-afc5-b7ce84056701/sv-benchmarks/c/weaver/bench-exp3x3-opt.wvr.c[2826,2839] [2021-11-19 04:38:28,213 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 04:38:28,222 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 04:38:28,252 WARN L230 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_826bdeae-45e0-4a54-afc5-b7ce84056701/sv-benchmarks/c/weaver/bench-exp3x3-opt.wvr.c[2826,2839] [2021-11-19 04:38:28,253 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 04:38:28,270 INFO L208 MainTranslator]: Completed translation [2021-11-19 04:38:28,271 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:38:28 WrapperNode [2021-11-19 04:38:28,271 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 04:38:28,272 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 04:38:28,273 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 04:38:28,273 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 04:38:28,282 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:38:28" (1/1) ... [2021-11-19 04:38:28,293 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:38:28" (1/1) ... [2021-11-19 04:38:28,322 INFO L137 Inliner]: procedures = 25, calls = 44, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 125 [2021-11-19 04:38:28,323 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 04:38:28,324 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 04:38:28,324 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 04:38:28,324 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 04:38:28,333 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:38:28" (1/1) ... [2021-11-19 04:38:28,333 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:38:28" (1/1) ... [2021-11-19 04:38:28,337 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:38:28" (1/1) ... [2021-11-19 04:38:28,337 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:38:28" (1/1) ... [2021-11-19 04:38:28,347 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:38:28" (1/1) ... [2021-11-19 04:38:28,353 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:38:28" (1/1) ... [2021-11-19 04:38:28,356 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:38:28" (1/1) ... [2021-11-19 04:38:28,360 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 04:38:28,361 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 04:38:28,361 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 04:38:28,361 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 04:38:28,362 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:38:28" (1/1) ... [2021-11-19 04:38:28,380 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 04:38:28,398 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_826bdeae-45e0-4a54-afc5-b7ce84056701/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:38:28,422 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_826bdeae-45e0-4a54-afc5-b7ce84056701/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 04:38:28,441 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_826bdeae-45e0-4a54-afc5-b7ce84056701/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 04:38:28,480 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 04:38:28,480 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 04:38:28,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-19 04:38:28,481 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-19 04:38:28,481 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-11-19 04:38:28,481 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-11-19 04:38:28,481 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-11-19 04:38:28,481 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-11-19 04:38:28,482 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-11-19 04:38:28,483 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-11-19 04:38:28,483 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-11-19 04:38:28,483 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-11-19 04:38:28,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-19 04:38:28,483 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2021-11-19 04:38:28,484 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2021-11-19 04:38:28,484 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2021-11-19 04:38:28,485 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2021-11-19 04:38:28,485 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 04:38:28,485 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 04:38:28,485 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 04:38:28,488 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-11-19 04:38:28,666 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 04:38:28,682 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 04:38:29,042 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 04:38:29,053 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 04:38:29,054 INFO L301 CfgBuilder]: Removed 6 assume(true) statements. [2021-11-19 04:38:29,056 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:38:29 BoogieIcfgContainer [2021-11-19 04:38:29,069 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 04:38:29,071 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 04:38:29,084 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 04:38:29,088 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 04:38:29,089 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:38:27" (1/3) ... [2021-11-19 04:38:29,090 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1110d53b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:38:29, skipping insertion in model container [2021-11-19 04:38:29,090 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:38:28" (2/3) ... [2021-11-19 04:38:29,091 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1110d53b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:38:29, skipping insertion in model container [2021-11-19 04:38:29,091 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:38:29" (3/3) ... [2021-11-19 04:38:29,092 INFO L111 eAbstractionObserver]: Analyzing ICFG bench-exp3x3-opt.wvr.c [2021-11-19 04:38:29,099 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-19 04:38:29,099 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 04:38:29,100 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-19 04:38:29,100 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-19 04:38:29,192 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork4_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:38:29,220 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork4_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:38:29,221 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork4_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:38:29,221 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork4_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:38:29,222 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:38:29,222 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:38:29,222 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:38:29,222 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:38:29,223 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:38:29,223 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:38:29,223 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:38:29,224 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:38:29,224 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork5_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:38:29,224 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork5_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:38:29,225 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork5_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:38:29,225 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork5_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:38:29,226 WARN L322 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:38:29,226 WARN L322 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:38:29,226 WARN L322 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:38:29,226 WARN L322 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:38:29,227 WARN L322 ript$VariableManager]: TermVariabe |thread6Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:38:29,227 WARN L322 ript$VariableManager]: TermVariabe |thread6Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:38:29,228 WARN L322 ript$VariableManager]: TermVariabe |thread6Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:38:29,228 WARN L322 ript$VariableManager]: TermVariabe |thread6Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:38:29,231 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:38:29,232 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:38:29,247 WARN L322 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:38:29,247 WARN L322 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:38:29,248 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:38:29,248 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:38:29,250 WARN L322 ript$VariableManager]: TermVariabe |thread6Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:38:29,250 WARN L322 ript$VariableManager]: TermVariabe |thread6Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:38:29,251 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork4_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:38:29,252 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork4_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:38:29,253 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork5_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:38:29,253 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork5_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:38:29,260 INFO L148 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2021-11-19 04:38:29,326 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 04:38:29,334 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-19 04:38:29,334 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-11-19 04:38:29,355 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 174 places, 169 transitions, 386 flow [2021-11-19 04:38:29,451 INFO L129 PetriNetUnfolder]: 14/163 cut-off events. [2021-11-19 04:38:29,451 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2021-11-19 04:38:29,460 INFO L84 FinitePrefix]: Finished finitePrefix Result has 188 conditions, 163 events. 14/163 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 74 event pairs, 0 based on Foata normal form. 0/148 useless extension candidates. Maximal degree in co-relation 120. Up to 2 conditions per place. [2021-11-19 04:38:29,460 INFO L82 GeneralOperation]: Start removeDead. Operand has 174 places, 169 transitions, 386 flow [2021-11-19 04:38:29,468 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 151 places, 146 transitions, 328 flow [2021-11-19 04:38:29,515 INFO L129 PetriNetUnfolder]: 14/145 cut-off events. [2021-11-19 04:38:29,515 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2021-11-19 04:38:29,515 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-19 04:38:29,516 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:38:29,517 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-11-19 04:38:29,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:38:29,528 INFO L85 PathProgramCache]: Analyzing trace with hash -1521349882, now seen corresponding path program 1 times [2021-11-19 04:38:29,541 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:38:29,543 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721630507] [2021-11-19 04:38:29,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:38:29,545 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:38:29,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:38:29,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:38:29,921 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:38:29,923 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721630507] [2021-11-19 04:38:29,924 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721630507] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:38:29,925 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:38:29,925 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-19 04:38:29,927 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285644348] [2021-11-19 04:38:29,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:38:29,939 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-19 04:38:29,940 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:38:29,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-19 04:38:29,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 04:38:29,985 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 169 [2021-11-19 04:38:29,995 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 146 transitions, 328 flow. Second operand has 2 states, 2 states have (on average 156.5) internal successors, (313), 2 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:38:29,995 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-19 04:38:29,995 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 169 [2021-11-19 04:38:29,997 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-19 04:38:30,111 INFO L129 PetriNetUnfolder]: 6/138 cut-off events. [2021-11-19 04:38:30,120 INFO L130 PetriNetUnfolder]: For 24/24 co-relation queries the response was YES. [2021-11-19 04:38:30,122 INFO L84 FinitePrefix]: Finished finitePrefix Result has 176 conditions, 138 events. 6/138 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 62 event pairs, 0 based on Foata normal form. 38/168 useless extension candidates. Maximal degree in co-relation 119. Up to 13 conditions per place. [2021-11-19 04:38:30,126 INFO L132 encePairwiseOnDemand]: 161/169 looper letters, 12 selfloop transitions, 0 changer transitions 2/138 dead transitions. [2021-11-19 04:38:30,127 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 138 transitions, 336 flow [2021-11-19 04:38:30,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-19 04:38:30,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-11-19 04:38:30,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 316 transitions. [2021-11-19 04:38:30,158 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9349112426035503 [2021-11-19 04:38:30,161 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 316 transitions. [2021-11-19 04:38:30,162 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 316 transitions. [2021-11-19 04:38:30,166 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-19 04:38:30,169 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 316 transitions. [2021-11-19 04:38:30,173 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 158.0) internal successors, (316), 2 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:38:30,179 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 169.0) internal successors, (507), 3 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:38:30,180 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 169.0) internal successors, (507), 3 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:38:30,182 INFO L186 Difference]: Start difference. First operand has 151 places, 146 transitions, 328 flow. Second operand 2 states and 316 transitions. [2021-11-19 04:38:30,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 138 transitions, 336 flow [2021-11-19 04:38:30,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 138 transitions, 312 flow, removed 0 selfloop flow, removed 12 redundant places. [2021-11-19 04:38:30,194 INFO L242 Difference]: Finished difference. Result has 140 places, 136 transitions, 284 flow [2021-11-19 04:38:30,197 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=284, PETRI_PLACES=140, PETRI_TRANSITIONS=136} [2021-11-19 04:38:30,201 INFO L334 CegarLoopForPetriNet]: 151 programPoint places, -11 predicate places. [2021-11-19 04:38:30,201 INFO L470 AbstractCegarLoop]: Abstraction has has 140 places, 136 transitions, 284 flow [2021-11-19 04:38:30,202 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 156.5) internal successors, (313), 2 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:38:30,202 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-19 04:38:30,202 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:38:30,202 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-19 04:38:30,203 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-11-19 04:38:30,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:38:30,204 INFO L85 PathProgramCache]: Analyzing trace with hash 266842239, now seen corresponding path program 1 times [2021-11-19 04:38:30,204 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:38:30,204 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813276900] [2021-11-19 04:38:30,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:38:30,205 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:38:30,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:38:31,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:38:31,602 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:38:31,602 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813276900] [2021-11-19 04:38:31,602 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813276900] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:38:31,603 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:38:31,603 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 04:38:31,603 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609891867] [2021-11-19 04:38:31,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:38:31,607 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 04:38:31,607 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:38:31,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 04:38:31,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-19 04:38:31,616 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 169 [2021-11-19 04:38:31,618 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 136 transitions, 284 flow. Second operand has 7 states, 7 states have (on average 111.71428571428571) internal successors, (782), 7 states have internal predecessors, (782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:38:31,618 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-19 04:38:31,618 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 169 [2021-11-19 04:38:31,619 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-19 04:38:35,769 INFO L129 PetriNetUnfolder]: 13835/21039 cut-off events. [2021-11-19 04:38:35,770 INFO L130 PetriNetUnfolder]: For 728/1010 co-relation queries the response was YES. [2021-11-19 04:38:35,855 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38530 conditions, 21039 events. 13835/21039 cut-off events. For 728/1010 co-relation queries the response was YES. Maximal size of possible extension queue 1068. Compared 134989 event pairs, 5521 based on Foata normal form. 2/15117 useless extension candidates. Maximal degree in co-relation 38527. Up to 8385 conditions per place. [2021-11-19 04:38:36,121 INFO L132 encePairwiseOnDemand]: 151/169 looper letters, 65 selfloop transitions, 15 changer transitions 4/168 dead transitions. [2021-11-19 04:38:36,122 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 168 transitions, 527 flow [2021-11-19 04:38:36,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 04:38:36,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-11-19 04:38:36,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 827 transitions. [2021-11-19 04:38:36,136 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6990701606086221 [2021-11-19 04:38:36,137 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 827 transitions. [2021-11-19 04:38:36,137 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 827 transitions. [2021-11-19 04:38:36,140 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-19 04:38:36,141 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 827 transitions. [2021-11-19 04:38:36,147 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 118.14285714285714) internal successors, (827), 7 states have internal predecessors, (827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:38:36,155 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 169.0) internal successors, (1352), 8 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:38:36,156 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 169.0) internal successors, (1352), 8 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:38:36,157 INFO L186 Difference]: Start difference. First operand has 140 places, 136 transitions, 284 flow. Second operand 7 states and 827 transitions. [2021-11-19 04:38:36,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 168 transitions, 527 flow [2021-11-19 04:38:36,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 168 transitions, 527 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-11-19 04:38:36,173 INFO L242 Difference]: Finished difference. Result has 148 places, 148 transitions, 394 flow [2021-11-19 04:38:36,174 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=394, PETRI_PLACES=148, PETRI_TRANSITIONS=148} [2021-11-19 04:38:36,175 INFO L334 CegarLoopForPetriNet]: 151 programPoint places, -3 predicate places. [2021-11-19 04:38:36,175 INFO L470 AbstractCegarLoop]: Abstraction has has 148 places, 148 transitions, 394 flow [2021-11-19 04:38:36,177 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 111.71428571428571) internal successors, (782), 7 states have internal predecessors, (782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:38:36,177 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-19 04:38:36,178 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:38:36,178 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-19 04:38:36,179 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-11-19 04:38:36,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:38:36,182 INFO L85 PathProgramCache]: Analyzing trace with hash 384415093, now seen corresponding path program 1 times [2021-11-19 04:38:36,182 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:38:36,182 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672577456] [2021-11-19 04:38:36,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:38:36,183 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:38:36,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:38:36,709 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:38:36,709 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:38:36,709 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672577456] [2021-11-19 04:38:36,710 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672577456] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 04:38:36,710 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1661095230] [2021-11-19 04:38:36,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:38:36,711 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 04:38:36,711 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_826bdeae-45e0-4a54-afc5-b7ce84056701/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:38:36,716 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_826bdeae-45e0-4a54-afc5-b7ce84056701/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 04:38:36,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_826bdeae-45e0-4a54-afc5-b7ce84056701/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-19 04:38:36,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:38:36,878 INFO L263 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 04:38:36,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:38:37,705 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:38:37,705 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:38:38,319 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:38:38,320 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1661095230] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 04:38:38,321 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-19 04:38:38,322 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 13 [2021-11-19 04:38:38,322 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122423320] [2021-11-19 04:38:38,322 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-19 04:38:38,325 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-19 04:38:38,325 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:38:38,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-19 04:38:38,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2021-11-19 04:38:38,330 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 169 [2021-11-19 04:38:38,334 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 148 transitions, 394 flow. Second operand has 13 states, 13 states have (on average 110.23076923076923) internal successors, (1433), 13 states have internal predecessors, (1433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:38:38,334 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-19 04:38:38,334 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 169 [2021-11-19 04:38:38,334 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-19 04:38:47,956 INFO L129 PetriNetUnfolder]: 41588/59893 cut-off events. [2021-11-19 04:38:47,956 INFO L130 PetriNetUnfolder]: For 31292/31391 co-relation queries the response was YES. [2021-11-19 04:38:48,203 INFO L84 FinitePrefix]: Finished finitePrefix Result has 161500 conditions, 59893 events. 41588/59893 cut-off events. For 31292/31391 co-relation queries the response was YES. Maximal size of possible extension queue 2646. Compared 409672 event pairs, 6576 based on Foata normal form. 1520/58944 useless extension candidates. Maximal degree in co-relation 161493. Up to 16356 conditions per place. [2021-11-19 04:38:48,746 INFO L132 encePairwiseOnDemand]: 150/169 looper letters, 215 selfloop transitions, 39 changer transitions 1/339 dead transitions. [2021-11-19 04:38:48,746 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 339 transitions, 1666 flow [2021-11-19 04:38:48,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-19 04:38:48,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-11-19 04:38:48,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1902 transitions. [2021-11-19 04:38:48,755 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7034023668639053 [2021-11-19 04:38:48,756 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1902 transitions. [2021-11-19 04:38:48,757 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1902 transitions. [2021-11-19 04:38:48,761 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-19 04:38:48,762 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1902 transitions. [2021-11-19 04:38:48,769 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 118.875) internal successors, (1902), 16 states have internal predecessors, (1902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:38:48,777 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 169.0) internal successors, (2873), 17 states have internal predecessors, (2873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:38:48,780 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 169.0) internal successors, (2873), 17 states have internal predecessors, (2873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:38:48,782 INFO L186 Difference]: Start difference. First operand has 148 places, 148 transitions, 394 flow. Second operand 16 states and 1902 transitions. [2021-11-19 04:38:48,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 339 transitions, 1666 flow [2021-11-19 04:38:48,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 339 transitions, 1650 flow, removed 6 selfloop flow, removed 4 redundant places. [2021-11-19 04:38:48,812 INFO L242 Difference]: Finished difference. Result has 165 places, 180 transitions, 736 flow [2021-11-19 04:38:48,816 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=386, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=736, PETRI_PLACES=165, PETRI_TRANSITIONS=180} [2021-11-19 04:38:48,819 INFO L334 CegarLoopForPetriNet]: 151 programPoint places, 14 predicate places. [2021-11-19 04:38:48,820 INFO L470 AbstractCegarLoop]: Abstraction has has 165 places, 180 transitions, 736 flow [2021-11-19 04:38:48,823 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 110.23076923076923) internal successors, (1433), 13 states have internal predecessors, (1433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:38:48,823 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-19 04:38:48,824 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:38:48,872 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_826bdeae-45e0-4a54-afc5-b7ce84056701/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-19 04:38:49,036 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_826bdeae-45e0-4a54-afc5-b7ce84056701/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 04:38:49,037 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-11-19 04:38:49,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:38:49,037 INFO L85 PathProgramCache]: Analyzing trace with hash -1302934921, now seen corresponding path program 2 times [2021-11-19 04:38:49,038 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:38:49,038 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86620662] [2021-11-19 04:38:49,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:38:49,038 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:38:49,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:38:49,372 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:38:49,372 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:38:49,372 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86620662] [2021-11-19 04:38:49,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86620662] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:38:49,372 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:38:49,373 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-19 04:38:49,373 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855631345] [2021-11-19 04:38:49,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:38:49,373 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 04:38:49,374 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:38:49,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 04:38:49,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-19 04:38:49,375 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 169 [2021-11-19 04:38:49,378 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 180 transitions, 736 flow. Second operand has 6 states, 6 states have (on average 113.0) internal successors, (678), 6 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:38:49,378 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-19 04:38:49,378 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 169 [2021-11-19 04:38:49,379 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-19 04:38:56,788 INFO L129 PetriNetUnfolder]: 39925/59973 cut-off events. [2021-11-19 04:38:56,788 INFO L130 PetriNetUnfolder]: For 136356/136729 co-relation queries the response was YES. [2021-11-19 04:38:57,045 INFO L84 FinitePrefix]: Finished finitePrefix Result has 198924 conditions, 59973 events. 39925/59973 cut-off events. For 136356/136729 co-relation queries the response was YES. Maximal size of possible extension queue 2945. Compared 444271 event pairs, 14252 based on Foata normal form. 323/57746 useless extension candidates. Maximal degree in co-relation 198911. Up to 44361 conditions per place. [2021-11-19 04:38:57,766 INFO L132 encePairwiseOnDemand]: 156/169 looper letters, 118 selfloop transitions, 19 changer transitions 1/222 dead transitions. [2021-11-19 04:38:57,766 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 222 transitions, 1202 flow [2021-11-19 04:38:57,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 04:38:57,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-11-19 04:38:57,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 738 transitions. [2021-11-19 04:38:57,770 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.727810650887574 [2021-11-19 04:38:57,770 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 738 transitions. [2021-11-19 04:38:57,770 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 738 transitions. [2021-11-19 04:38:57,771 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-19 04:38:57,771 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 738 transitions. [2021-11-19 04:38:57,774 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 123.0) internal successors, (738), 6 states have internal predecessors, (738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:38:57,777 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 169.0) internal successors, (1183), 7 states have internal predecessors, (1183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:38:57,777 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 169.0) internal successors, (1183), 7 states have internal predecessors, (1183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:38:57,778 INFO L186 Difference]: Start difference. First operand has 165 places, 180 transitions, 736 flow. Second operand 6 states and 738 transitions. [2021-11-19 04:38:57,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 222 transitions, 1202 flow [2021-11-19 04:38:58,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 222 transitions, 1196 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-11-19 04:38:58,072 INFO L242 Difference]: Finished difference. Result has 169 places, 186 transitions, 853 flow [2021-11-19 04:38:58,072 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=730, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=853, PETRI_PLACES=169, PETRI_TRANSITIONS=186} [2021-11-19 04:38:58,074 INFO L334 CegarLoopForPetriNet]: 151 programPoint places, 18 predicate places. [2021-11-19 04:38:58,074 INFO L470 AbstractCegarLoop]: Abstraction has has 169 places, 186 transitions, 853 flow [2021-11-19 04:38:58,075 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 113.0) internal successors, (678), 6 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:38:58,075 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-19 04:38:58,075 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:38:58,076 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-19 04:38:58,076 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-11-19 04:38:58,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:38:58,077 INFO L85 PathProgramCache]: Analyzing trace with hash -1623736381, now seen corresponding path program 1 times [2021-11-19 04:38:58,077 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:38:58,077 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215460909] [2021-11-19 04:38:58,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:38:58,078 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:38:58,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:38:58,382 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:38:58,382 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:38:58,382 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215460909] [2021-11-19 04:38:58,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215460909] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 04:38:58,383 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [957533401] [2021-11-19 04:38:58,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:38:58,383 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 04:38:58,383 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_826bdeae-45e0-4a54-afc5-b7ce84056701/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:38:58,385 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_826bdeae-45e0-4a54-afc5-b7ce84056701/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 04:38:58,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_826bdeae-45e0-4a54-afc5-b7ce84056701/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-19 04:38:58,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:38:58,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 04:38:58,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:38:59,068 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:38:59,068 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:38:59,633 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:38:59,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [957533401] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 04:38:59,634 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-19 04:38:59,634 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 13 [2021-11-19 04:38:59,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387959022] [2021-11-19 04:38:59,635 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-19 04:38:59,636 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-19 04:38:59,637 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:38:59,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-19 04:38:59,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2021-11-19 04:38:59,640 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 169 [2021-11-19 04:38:59,642 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 186 transitions, 853 flow. Second operand has 13 states, 13 states have (on average 110.84615384615384) internal successors, (1441), 13 states have internal predecessors, (1441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:38:59,643 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-19 04:38:59,643 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 169 [2021-11-19 04:38:59,643 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-19 04:39:16,811 INFO L129 PetriNetUnfolder]: 93756/131965 cut-off events. [2021-11-19 04:39:16,811 INFO L130 PetriNetUnfolder]: For 258489/258747 co-relation queries the response was YES. [2021-11-19 04:39:17,464 INFO L84 FinitePrefix]: Finished finitePrefix Result has 476029 conditions, 131965 events. 93756/131965 cut-off events. For 258489/258747 co-relation queries the response was YES. Maximal size of possible extension queue 5889. Compared 971915 event pairs, 4377 based on Foata normal form. 4210/133797 useless extension candidates. Maximal degree in co-relation 476013. Up to 37500 conditions per place. [2021-11-19 04:39:18,840 INFO L132 encePairwiseOnDemand]: 150/169 looper letters, 296 selfloop transitions, 64 changer transitions 1/445 dead transitions. [2021-11-19 04:39:18,840 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 445 transitions, 3263 flow [2021-11-19 04:39:18,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-19 04:39:18,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-11-19 04:39:18,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1902 transitions. [2021-11-19 04:39:18,850 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7034023668639053 [2021-11-19 04:39:18,850 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1902 transitions. [2021-11-19 04:39:18,851 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1902 transitions. [2021-11-19 04:39:18,853 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-19 04:39:18,854 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1902 transitions. [2021-11-19 04:39:18,862 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 118.875) internal successors, (1902), 16 states have internal predecessors, (1902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:39:18,871 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 169.0) internal successors, (2873), 17 states have internal predecessors, (2873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:39:18,873 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 169.0) internal successors, (2873), 17 states have internal predecessors, (2873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:39:18,873 INFO L186 Difference]: Start difference. First operand has 169 places, 186 transitions, 853 flow. Second operand 16 states and 1902 transitions. [2021-11-19 04:39:18,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 445 transitions, 3263 flow [2021-11-19 04:39:23,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 445 transitions, 3216 flow, removed 10 selfloop flow, removed 3 redundant places. [2021-11-19 04:39:23,610 INFO L242 Difference]: Finished difference. Result has 189 places, 229 transitions, 1388 flow [2021-11-19 04:39:23,611 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=824, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1388, PETRI_PLACES=189, PETRI_TRANSITIONS=229} [2021-11-19 04:39:23,612 INFO L334 CegarLoopForPetriNet]: 151 programPoint places, 38 predicate places. [2021-11-19 04:39:23,613 INFO L470 AbstractCegarLoop]: Abstraction has has 189 places, 229 transitions, 1388 flow [2021-11-19 04:39:23,614 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 110.84615384615384) internal successors, (1441), 13 states have internal predecessors, (1441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:39:23,614 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-19 04:39:23,615 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:39:23,658 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_826bdeae-45e0-4a54-afc5-b7ce84056701/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-19 04:39:23,836 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_826bdeae-45e0-4a54-afc5-b7ce84056701/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 04:39:23,837 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-11-19 04:39:23,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:39:23,838 INFO L85 PathProgramCache]: Analyzing trace with hash -1223484359, now seen corresponding path program 2 times [2021-11-19 04:39:23,838 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:39:23,838 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335552116] [2021-11-19 04:39:23,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:39:23,839 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:39:24,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:39:24,397 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:39:24,398 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:39:24,398 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335552116] [2021-11-19 04:39:24,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335552116] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:39:24,398 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:39:24,398 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-19 04:39:24,399 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739639465] [2021-11-19 04:39:24,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:39:24,399 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 04:39:24,400 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:39:24,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 04:39:24,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-19 04:39:24,402 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 169 [2021-11-19 04:39:24,403 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 229 transitions, 1388 flow. Second operand has 6 states, 6 states have (on average 113.0) internal successors, (678), 6 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:39:24,403 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-19 04:39:24,403 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 169 [2021-11-19 04:39:24,403 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand