./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/unroll-4.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8726b7d7-8bf3-4d14-aefb-002cb98bea5b/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8726b7d7-8bf3-4d14-aefb-002cb98bea5b/bin/uautomizer-YU5uOKAj3y/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8726b7d7-8bf3-4d14-aefb-002cb98bea5b/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8726b7d7-8bf3-4d14-aefb-002cb98bea5b/bin/uautomizer-YU5uOKAj3y/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/unroll-4.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8726b7d7-8bf3-4d14-aefb-002cb98bea5b/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8726b7d7-8bf3-4d14-aefb-002cb98bea5b/bin/uautomizer-YU5uOKAj3y --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7071c3ff0bb3d9f81f254bc51d27ce3551a85cc081b1b878560a7d4c8f67639e --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 17:32:48,262 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 17:32:48,264 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 17:32:48,314 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 17:32:48,315 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 17:32:48,319 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 17:32:48,321 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 17:32:48,325 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 17:32:48,328 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 17:32:48,333 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 17:32:48,334 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 17:32:48,336 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 17:32:48,336 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 17:32:48,339 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 17:32:48,341 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 17:32:48,351 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 17:32:48,353 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 17:32:48,354 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 17:32:48,358 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 17:32:48,369 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 17:32:48,371 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 17:32:48,372 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 17:32:48,376 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 17:32:48,377 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 17:32:48,386 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 17:32:48,386 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 17:32:48,386 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 17:32:48,388 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 17:32:48,389 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 17:32:48,390 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 17:32:48,391 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 17:32:48,392 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 17:32:48,394 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 17:32:48,395 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 17:32:48,397 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 17:32:48,397 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 17:32:48,398 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 17:32:48,398 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 17:32:48,398 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 17:32:48,400 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 17:32:48,400 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 17:32:48,401 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8726b7d7-8bf3-4d14-aefb-002cb98bea5b/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-13 17:32:48,443 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 17:32:48,443 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 17:32:48,443 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 17:32:48,444 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 17:32:48,444 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 17:32:48,447 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 17:32:48,448 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 17:32:48,448 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 17:32:48,448 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 17:32:48,449 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 17:32:48,450 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 17:32:48,450 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 17:32:48,450 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 17:32:48,450 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 17:32:48,450 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 17:32:48,451 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 17:32:48,451 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 17:32:48,451 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 17:32:48,451 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 17:32:48,451 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 17:32:48,452 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 17:32:48,452 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 17:32:48,452 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 17:32:48,453 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 17:32:48,453 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 17:32:48,453 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 17:32:48,453 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 17:32:48,453 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 17:32:48,454 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-13 17:32:48,455 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 17:32:48,455 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-13 17:32:48,455 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-13 17:32:48,456 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 17:32:48,456 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 17:32:48,456 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_8726b7d7-8bf3-4d14-aefb-002cb98bea5b/bin/uautomizer-YU5uOKAj3y/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8726b7d7-8bf3-4d14-aefb-002cb98bea5b/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7071c3ff0bb3d9f81f254bc51d27ce3551a85cc081b1b878560a7d4c8f67639e [2021-11-13 17:32:48,761 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 17:32:48,781 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 17:32:48,784 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 17:32:48,785 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 17:32:48,786 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 17:32:48,787 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8726b7d7-8bf3-4d14-aefb-002cb98bea5b/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/weaver/unroll-4.wvr.c [2021-11-13 17:32:48,855 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8726b7d7-8bf3-4d14-aefb-002cb98bea5b/bin/uautomizer-YU5uOKAj3y/data/de568b9bf/bf1d452236574be3ac830670d117bbc0/FLAGacf90eadd [2021-11-13 17:32:49,426 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 17:32:49,427 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8726b7d7-8bf3-4d14-aefb-002cb98bea5b/sv-benchmarks/c/weaver/unroll-4.wvr.c [2021-11-13 17:32:49,440 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8726b7d7-8bf3-4d14-aefb-002cb98bea5b/bin/uautomizer-YU5uOKAj3y/data/de568b9bf/bf1d452236574be3ac830670d117bbc0/FLAGacf90eadd [2021-11-13 17:32:49,770 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8726b7d7-8bf3-4d14-aefb-002cb98bea5b/bin/uautomizer-YU5uOKAj3y/data/de568b9bf/bf1d452236574be3ac830670d117bbc0 [2021-11-13 17:32:49,776 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 17:32:49,777 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 17:32:49,780 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 17:32:49,780 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 17:32:49,783 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 17:32:49,783 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 05:32:49" (1/1) ... [2021-11-13 17:32:49,785 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2066e987 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:32:49, skipping insertion in model container [2021-11-13 17:32:49,785 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 05:32:49" (1/1) ... [2021-11-13 17:32:49,791 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 17:32:49,809 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 17:32:50,007 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_8726b7d7-8bf3-4d14-aefb-002cb98bea5b/sv-benchmarks/c/weaver/unroll-4.wvr.c[2572,2585] [2021-11-13 17:32:50,014 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 17:32:50,022 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 17:32:50,044 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_8726b7d7-8bf3-4d14-aefb-002cb98bea5b/sv-benchmarks/c/weaver/unroll-4.wvr.c[2572,2585] [2021-11-13 17:32:50,048 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 17:32:50,062 INFO L208 MainTranslator]: Completed translation [2021-11-13 17:32:50,062 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:32:50 WrapperNode [2021-11-13 17:32:50,063 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 17:32:50,064 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 17:32:50,064 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 17:32:50,064 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 17:32:50,071 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:32:50" (1/1) ... [2021-11-13 17:32:50,079 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:32:50" (1/1) ... [2021-11-13 17:32:50,107 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 17:32:50,108 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 17:32:50,108 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 17:32:50,108 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 17:32:50,116 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:32:50" (1/1) ... [2021-11-13 17:32:50,117 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:32:50" (1/1) ... [2021-11-13 17:32:50,120 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:32:50" (1/1) ... [2021-11-13 17:32:50,120 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:32:50" (1/1) ... [2021-11-13 17:32:50,129 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:32:50" (1/1) ... [2021-11-13 17:32:50,134 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:32:50" (1/1) ... [2021-11-13 17:32:50,136 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:32:50" (1/1) ... [2021-11-13 17:32:50,139 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 17:32:50,140 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 17:32:50,140 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 17:32:50,140 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 17:32:50,141 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:32:50" (1/1) ... [2021-11-13 17:32:50,154 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 17:32:50,165 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8726b7d7-8bf3-4d14-aefb-002cb98bea5b/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:32:50,188 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8726b7d7-8bf3-4d14-aefb-002cb98bea5b/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 17:32:50,213 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8726b7d7-8bf3-4d14-aefb-002cb98bea5b/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 17:32:50,230 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-11-13 17:32:50,230 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-11-13 17:32:50,231 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-11-13 17:32:50,231 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-11-13 17:32:50,231 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-13 17:32:50,231 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 17:32:50,231 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-13 17:32:50,231 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-13 17:32:50,232 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 17:32:50,232 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 17:32:50,232 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-13 17:32:50,232 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-13 17:32:50,234 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-11-13 17:32:50,746 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 17:32:50,746 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-11-13 17:32:50,749 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 05:32:50 BoogieIcfgContainer [2021-11-13 17:32:50,753 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 17:32:50,755 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 17:32:50,756 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 17:32:50,760 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 17:32:50,760 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 05:32:49" (1/3) ... [2021-11-13 17:32:50,761 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27fedeef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 05:32:50, skipping insertion in model container [2021-11-13 17:32:50,762 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:32:50" (2/3) ... [2021-11-13 17:32:50,762 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27fedeef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 05:32:50, skipping insertion in model container [2021-11-13 17:32:50,763 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 05:32:50" (3/3) ... [2021-11-13 17:32:50,765 INFO L111 eAbstractionObserver]: Analyzing ICFG unroll-4.wvr.c [2021-11-13 17:32:50,771 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-13 17:32:50,772 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 17:32:50,772 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-13 17:32:50,772 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-13 17:32:50,839 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,839 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,840 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,840 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,840 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,841 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,841 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,841 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,841 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,842 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,842 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,842 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,843 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,843 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,844 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,844 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,845 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,845 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,845 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,845 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,845 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,846 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,846 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,846 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,847 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,847 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,848 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,848 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,849 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,850 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,850 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,850 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,851 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,851 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,851 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,852 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,852 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,852 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,856 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,856 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,856 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,857 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,857 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,858 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,858 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,858 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,859 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,859 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,859 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,860 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,860 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,860 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,860 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,861 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,861 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,863 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,863 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,864 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,864 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,864 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,865 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,865 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,866 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,866 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,866 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,867 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,867 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,868 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,868 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,868 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,868 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,869 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,869 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,869 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,870 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,870 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,870 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,870 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,871 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,871 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,871 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,871 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,871 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,872 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,874 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,875 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,875 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,878 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,878 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,879 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,879 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,880 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,880 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,881 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,882 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,883 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,889 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,890 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,890 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,890 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,890 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,891 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,891 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,891 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,891 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,892 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,892 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,892 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,893 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,893 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,893 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,893 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,893 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,894 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,895 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,895 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,895 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,895 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,896 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,896 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,897 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,897 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,897 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,897 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,897 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,898 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,898 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,898 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,898 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,899 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,899 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,899 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,899 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,899 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,900 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,900 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,900 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,900 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,900 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,901 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,901 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,901 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,901 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,902 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,902 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,902 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,903 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,903 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,903 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,903 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,903 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,904 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,904 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,904 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,904 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,905 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,905 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,906 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,906 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,906 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,911 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,912 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,912 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,912 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,912 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,913 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,913 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,918 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,918 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,918 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,919 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,919 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,919 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,919 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,919 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,920 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,920 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,920 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,920 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,921 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:32:50,928 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-11-13 17:32:50,992 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 17:32:51,009 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-13 17:32:51,010 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-13 17:32:51,027 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 190 places, 199 transitions, 414 flow [2021-11-13 17:32:51,122 INFO L129 PetriNetUnfolder]: 16/197 cut-off events. [2021-11-13 17:32:51,122 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-11-13 17:32:51,129 INFO L84 FinitePrefix]: Finished finitePrefix Result has 206 conditions, 197 events. 16/197 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 173 event pairs, 0 based on Foata normal form. 0/180 useless extension candidates. Maximal degree in co-relation 110. Up to 2 conditions per place. [2021-11-13 17:32:51,130 INFO L82 GeneralOperation]: Start removeDead. Operand has 190 places, 199 transitions, 414 flow [2021-11-13 17:32:51,137 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 179 places, 188 transitions, 388 flow [2021-11-13 17:32:51,177 INFO L129 PetriNetUnfolder]: 13/156 cut-off events. [2021-11-13 17:32:51,177 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-11-13 17:32:51,177 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 17:32:51,178 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] [2021-11-13 17:32:51,178 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-13 17:32:51,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:32:51,184 INFO L85 PathProgramCache]: Analyzing trace with hash -1248570888, now seen corresponding path program 1 times [2021-11-13 17:32:51,192 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:32:51,193 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450149808] [2021-11-13 17:32:51,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:32:51,194 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:32:51,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:51,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:32:51,390 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:32:51,390 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450149808] [2021-11-13 17:32:51,391 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450149808] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:32:51,391 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:32:51,391 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-13 17:32:51,393 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131541493] [2021-11-13 17:32:51,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:32:51,402 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-13 17:32:51,402 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:32:51,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-13 17:32:51,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-13 17:32:51,432 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 199 [2021-11-13 17:32:51,437 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 188 transitions, 388 flow. Second operand has 2 states, 2 states have (on average 183.5) internal successors, (367), 2 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:32:51,437 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 17:32:51,437 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 199 [2021-11-13 17:32:51,439 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 17:32:51,516 INFO L129 PetriNetUnfolder]: 3/175 cut-off events. [2021-11-13 17:32:51,516 INFO L130 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2021-11-13 17:32:51,518 INFO L84 FinitePrefix]: Finished finitePrefix Result has 189 conditions, 175 events. 3/175 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 142 event pairs, 0 based on Foata normal form. 16/178 useless extension candidates. Maximal degree in co-relation 104. Up to 5 conditions per place. [2021-11-13 17:32:51,520 INFO L132 encePairwiseOnDemand]: 186/199 looper letters, 4 selfloop transitions, 0 changer transitions 5/175 dead transitions. [2021-11-13 17:32:51,520 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 175 transitions, 370 flow [2021-11-13 17:32:51,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-13 17:32:51,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-11-13 17:32:51,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 379 transitions. [2021-11-13 17:32:51,536 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9522613065326633 [2021-11-13 17:32:51,536 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 379 transitions. [2021-11-13 17:32:51,537 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 379 transitions. [2021-11-13 17:32:51,539 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 17:32:51,542 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 379 transitions. [2021-11-13 17:32:51,546 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 189.5) internal successors, (379), 2 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:32:51,552 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 199.0) internal successors, (597), 3 states have internal predecessors, (597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:32:51,553 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 199.0) internal successors, (597), 3 states have internal predecessors, (597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:32:51,555 INFO L186 Difference]: Start difference. First operand has 179 places, 188 transitions, 388 flow. Second operand 2 states and 379 transitions. [2021-11-13 17:32:51,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 175 transitions, 370 flow [2021-11-13 17:32:51,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 175 transitions, 362 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-11-13 17:32:51,565 INFO L242 Difference]: Finished difference. Result has 176 places, 170 transitions, 344 flow [2021-11-13 17:32:51,568 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=354, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=344, PETRI_PLACES=176, PETRI_TRANSITIONS=170} [2021-11-13 17:32:51,572 INFO L334 CegarLoopForPetriNet]: 179 programPoint places, -3 predicate places. [2021-11-13 17:32:51,572 INFO L470 AbstractCegarLoop]: Abstraction has has 176 places, 170 transitions, 344 flow [2021-11-13 17:32:51,572 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 183.5) internal successors, (367), 2 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:32:51,572 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 17:32:51,573 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] [2021-11-13 17:32:51,573 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-13 17:32:51,573 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-13 17:32:51,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:32:51,574 INFO L85 PathProgramCache]: Analyzing trace with hash -366624895, now seen corresponding path program 1 times [2021-11-13 17:32:51,574 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:32:51,575 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401802672] [2021-11-13 17:32:51,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:32:51,575 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:32:51,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:51,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:32:51,910 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:32:51,910 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401802672] [2021-11-13 17:32:51,910 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401802672] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:32:51,911 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:32:51,911 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-13 17:32:51,911 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049377835] [2021-11-13 17:32:51,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:32:51,913 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 17:32:51,913 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:32:51,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 17:32:51,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-13 17:32:51,921 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 199 [2021-11-13 17:32:51,923 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 170 transitions, 344 flow. Second operand has 8 states, 8 states have (on average 143.0) internal successors, (1144), 8 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:32:51,924 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 17:32:51,924 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 199 [2021-11-13 17:32:51,924 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 17:32:52,154 INFO L129 PetriNetUnfolder]: 22/292 cut-off events. [2021-11-13 17:32:52,154 INFO L130 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2021-11-13 17:32:52,160 INFO L84 FinitePrefix]: Finished finitePrefix Result has 371 conditions, 292 events. 22/292 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 646 event pairs, 9 based on Foata normal form. 0/267 useless extension candidates. Maximal degree in co-relation 368. Up to 61 conditions per place. [2021-11-13 17:32:52,162 INFO L132 encePairwiseOnDemand]: 191/199 looper letters, 38 selfloop transitions, 7 changer transitions 0/174 dead transitions. [2021-11-13 17:32:52,162 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 174 transitions, 442 flow [2021-11-13 17:32:52,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-13 17:32:52,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-11-13 17:32:52,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1158 transitions. [2021-11-13 17:32:52,172 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7273869346733668 [2021-11-13 17:32:52,172 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1158 transitions. [2021-11-13 17:32:52,172 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1158 transitions. [2021-11-13 17:32:52,173 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 17:32:52,173 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1158 transitions. [2021-11-13 17:32:52,179 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 144.75) internal successors, (1158), 8 states have internal predecessors, (1158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:32:52,186 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 199.0) internal successors, (1791), 9 states have internal predecessors, (1791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:32:52,187 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 199.0) internal successors, (1791), 9 states have internal predecessors, (1791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:32:52,188 INFO L186 Difference]: Start difference. First operand has 176 places, 170 transitions, 344 flow. Second operand 8 states and 1158 transitions. [2021-11-13 17:32:52,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 174 transitions, 442 flow [2021-11-13 17:32:52,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 174 transitions, 442 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-11-13 17:32:52,201 INFO L242 Difference]: Finished difference. Result has 179 places, 171 transitions, 366 flow [2021-11-13 17:32:52,201 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=344, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=366, PETRI_PLACES=179, PETRI_TRANSITIONS=171} [2021-11-13 17:32:52,202 INFO L334 CegarLoopForPetriNet]: 179 programPoint places, 0 predicate places. [2021-11-13 17:32:52,202 INFO L470 AbstractCegarLoop]: Abstraction has has 179 places, 171 transitions, 366 flow [2021-11-13 17:32:52,203 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 143.0) internal successors, (1144), 8 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:32:52,204 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 17:32:52,204 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] [2021-11-13 17:32:52,204 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-13 17:32:52,205 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-13 17:32:52,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:32:52,206 INFO L85 PathProgramCache]: Analyzing trace with hash 1168250419, now seen corresponding path program 1 times [2021-11-13 17:32:52,207 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:32:52,207 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487650695] [2021-11-13 17:32:52,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:32:52,207 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:32:52,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:52,460 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-13 17:32:52,461 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:32:52,461 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487650695] [2021-11-13 17:32:52,461 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487650695] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:32:52,461 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:32:52,461 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 17:32:52,462 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190522075] [2021-11-13 17:32:52,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:32:52,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 17:32:52,463 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:32:52,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 17:32:52,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-13 17:32:52,469 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 199 [2021-11-13 17:32:52,471 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 171 transitions, 366 flow. Second operand has 6 states, 6 states have (on average 143.33333333333334) internal successors, (860), 6 states have internal predecessors, (860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:32:52,471 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 17:32:52,471 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 199 [2021-11-13 17:32:52,472 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 17:32:52,767 INFO L129 PetriNetUnfolder]: 121/786 cut-off events. [2021-11-13 17:32:52,767 INFO L130 PetriNetUnfolder]: For 34/34 co-relation queries the response was YES. [2021-11-13 17:32:52,770 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1078 conditions, 786 events. 121/786 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 4233 event pairs, 38 based on Foata normal form. 1/731 useless extension candidates. Maximal degree in co-relation 1073. Up to 133 conditions per place. [2021-11-13 17:32:52,774 INFO L132 encePairwiseOnDemand]: 192/199 looper letters, 65 selfloop transitions, 5 changer transitions 4/204 dead transitions. [2021-11-13 17:32:52,774 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 204 transitions, 585 flow [2021-11-13 17:32:52,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 17:32:52,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-11-13 17:32:52,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 909 transitions. [2021-11-13 17:32:52,778 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7613065326633166 [2021-11-13 17:32:52,778 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 909 transitions. [2021-11-13 17:32:52,778 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 909 transitions. [2021-11-13 17:32:52,779 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 17:32:52,779 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 909 transitions. [2021-11-13 17:32:52,782 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 151.5) internal successors, (909), 6 states have internal predecessors, (909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:32:52,785 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 199.0) internal successors, (1393), 7 states have internal predecessors, (1393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:32:52,787 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 199.0) internal successors, (1393), 7 states have internal predecessors, (1393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:32:52,787 INFO L186 Difference]: Start difference. First operand has 179 places, 171 transitions, 366 flow. Second operand 6 states and 909 transitions. [2021-11-13 17:32:52,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 204 transitions, 585 flow [2021-11-13 17:32:52,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 204 transitions, 573 flow, removed 0 selfloop flow, removed 6 redundant places. [2021-11-13 17:32:52,795 INFO L242 Difference]: Finished difference. Result has 181 places, 174 transitions, 383 flow [2021-11-13 17:32:52,795 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=354, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=383, PETRI_PLACES=181, PETRI_TRANSITIONS=174} [2021-11-13 17:32:52,798 INFO L334 CegarLoopForPetriNet]: 179 programPoint places, 2 predicate places. [2021-11-13 17:32:52,798 INFO L470 AbstractCegarLoop]: Abstraction has has 181 places, 174 transitions, 383 flow [2021-11-13 17:32:52,799 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 143.33333333333334) internal successors, (860), 6 states have internal predecessors, (860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:32:52,800 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 17:32:52,800 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] [2021-11-13 17:32:52,800 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-13 17:32:52,800 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-13 17:32:52,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:32:52,802 INFO L85 PathProgramCache]: Analyzing trace with hash -720647426, now seen corresponding path program 1 times [2021-11-13 17:32:52,802 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:32:52,803 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907628612] [2021-11-13 17:32:52,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:32:52,803 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:32:52,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:53,051 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-13 17:32:53,051 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:32:53,052 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907628612] [2021-11-13 17:32:53,052 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907628612] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 17:32:53,052 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [624601232] [2021-11-13 17:32:53,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:32:53,052 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 17:32:53,053 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8726b7d7-8bf3-4d14-aefb-002cb98bea5b/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:32:53,054 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8726b7d7-8bf3-4d14-aefb-002cb98bea5b/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 17:32:53,061 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8726b7d7-8bf3-4d14-aefb-002cb98bea5b/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-13 17:32:53,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:53,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-13 17:32:53,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:32:53,546 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-13 17:32:53,546 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:32:53,838 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-13 17:32:53,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [624601232] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 17:32:53,839 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-13 17:32:53,840 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 5] total 9 [2021-11-13 17:32:53,840 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117334857] [2021-11-13 17:32:53,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:32:53,843 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 17:32:53,843 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:32:53,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 17:32:53,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-13 17:32:53,847 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 199 [2021-11-13 17:32:53,849 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 174 transitions, 383 flow. Second operand has 4 states, 4 states have (on average 167.75) internal successors, (671), 4 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:32:53,849 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 17:32:53,849 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 199 [2021-11-13 17:32:53,849 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 17:32:54,115 INFO L129 PetriNetUnfolder]: 112/822 cut-off events. [2021-11-13 17:32:54,116 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2021-11-13 17:32:54,120 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1089 conditions, 822 events. 112/822 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 4312 event pairs, 13 based on Foata normal form. 0/723 useless extension candidates. Maximal degree in co-relation 1081. Up to 143 conditions per place. [2021-11-13 17:32:54,127 INFO L132 encePairwiseOnDemand]: 194/199 looper letters, 26 selfloop transitions, 5 changer transitions 1/186 dead transitions. [2021-11-13 17:32:54,128 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 186 transitions, 475 flow [2021-11-13 17:32:54,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 17:32:54,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-11-13 17:32:54,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 693 transitions. [2021-11-13 17:32:54,131 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8706030150753769 [2021-11-13 17:32:54,131 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 693 transitions. [2021-11-13 17:32:54,131 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 693 transitions. [2021-11-13 17:32:54,132 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 17:32:54,132 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 693 transitions. [2021-11-13 17:32:54,134 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 173.25) internal successors, (693), 4 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:32:54,137 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 199.0) internal successors, (995), 5 states have internal predecessors, (995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:32:54,138 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 199.0) internal successors, (995), 5 states have internal predecessors, (995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:32:54,139 INFO L186 Difference]: Start difference. First operand has 181 places, 174 transitions, 383 flow. Second operand 4 states and 693 transitions. [2021-11-13 17:32:54,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 186 transitions, 475 flow [2021-11-13 17:32:54,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 186 transitions, 471 flow, removed 2 selfloop flow, removed 2 redundant places. [2021-11-13 17:32:54,146 INFO L242 Difference]: Finished difference. Result has 183 places, 178 transitions, 415 flow [2021-11-13 17:32:54,147 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=379, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=415, PETRI_PLACES=183, PETRI_TRANSITIONS=178} [2021-11-13 17:32:54,148 INFO L334 CegarLoopForPetriNet]: 179 programPoint places, 4 predicate places. [2021-11-13 17:32:54,149 INFO L470 AbstractCegarLoop]: Abstraction has has 183 places, 178 transitions, 415 flow [2021-11-13 17:32:54,149 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 167.75) internal successors, (671), 4 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:32:54,150 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 17:32:54,150 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] [2021-11-13 17:32:54,187 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8726b7d7-8bf3-4d14-aefb-002cb98bea5b/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-13 17:32:54,369 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8726b7d7-8bf3-4d14-aefb-002cb98bea5b/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 17:32:54,369 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-13 17:32:54,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:32:54,370 INFO L85 PathProgramCache]: Analyzing trace with hash -257953500, now seen corresponding path program 2 times [2021-11-13 17:32:54,370 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:32:54,370 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858105148] [2021-11-13 17:32:54,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:32:54,370 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:32:54,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:54,502 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-13 17:32:54,507 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:32:54,507 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858105148] [2021-11-13 17:32:54,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858105148] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:32:54,508 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:32:54,508 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 17:32:54,508 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727171200] [2021-11-13 17:32:54,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:32:54,509 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 17:32:54,509 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:32:54,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 17:32:54,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 17:32:54,512 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 199 [2021-11-13 17:32:54,513 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 178 transitions, 415 flow. Second operand has 4 states, 4 states have (on average 167.75) internal successors, (671), 4 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:32:54,514 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 17:32:54,514 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 199 [2021-11-13 17:32:54,514 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 17:32:54,725 INFO L129 PetriNetUnfolder]: 128/916 cut-off events. [2021-11-13 17:32:54,725 INFO L130 PetriNetUnfolder]: For 164/164 co-relation queries the response was YES. [2021-11-13 17:32:54,729 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1365 conditions, 916 events. 128/916 cut-off events. For 164/164 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 4740 event pairs, 46 based on Foata normal form. 2/864 useless extension candidates. Maximal degree in co-relation 1356. Up to 189 conditions per place. [2021-11-13 17:32:54,734 INFO L132 encePairwiseOnDemand]: 193/199 looper letters, 29 selfloop transitions, 6 changer transitions 0/189 dead transitions. [2021-11-13 17:32:54,734 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 189 transitions, 526 flow [2021-11-13 17:32:54,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 17:32:54,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-11-13 17:32:54,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 856 transitions. [2021-11-13 17:32:54,737 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8603015075376884 [2021-11-13 17:32:54,738 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 856 transitions. [2021-11-13 17:32:54,738 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 856 transitions. [2021-11-13 17:32:54,739 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 17:32:54,739 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 856 transitions. [2021-11-13 17:32:54,741 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 171.2) internal successors, (856), 5 states have internal predecessors, (856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:32:54,744 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 199.0) internal successors, (1194), 6 states have internal predecessors, (1194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:32:54,745 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 199.0) internal successors, (1194), 6 states have internal predecessors, (1194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:32:54,745 INFO L186 Difference]: Start difference. First operand has 183 places, 178 transitions, 415 flow. Second operand 5 states and 856 transitions. [2021-11-13 17:32:54,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 189 transitions, 526 flow [2021-11-13 17:32:54,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 189 transitions, 526 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-11-13 17:32:54,752 INFO L242 Difference]: Finished difference. Result has 189 places, 180 transitions, 450 flow [2021-11-13 17:32:54,753 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=415, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=450, PETRI_PLACES=189, PETRI_TRANSITIONS=180} [2021-11-13 17:32:54,755 INFO L334 CegarLoopForPetriNet]: 179 programPoint places, 10 predicate places. [2021-11-13 17:32:54,756 INFO L470 AbstractCegarLoop]: Abstraction has has 189 places, 180 transitions, 450 flow [2021-11-13 17:32:54,756 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 167.75) internal successors, (671), 4 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:32:54,756 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 17:32:54,757 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] [2021-11-13 17:32:54,757 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-13 17:32:54,757 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-13 17:32:54,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:32:54,758 INFO L85 PathProgramCache]: Analyzing trace with hash -205102580, now seen corresponding path program 3 times [2021-11-13 17:32:54,758 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:32:54,758 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163059369] [2021-11-13 17:32:54,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:32:54,759 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:32:54,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:54,954 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-13 17:32:54,955 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:32:54,955 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163059369] [2021-11-13 17:32:54,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163059369] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 17:32:54,955 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1315942991] [2021-11-13 17:32:54,956 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-13 17:32:54,956 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 17:32:54,956 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8726b7d7-8bf3-4d14-aefb-002cb98bea5b/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:32:54,957 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8726b7d7-8bf3-4d14-aefb-002cb98bea5b/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 17:32:54,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8726b7d7-8bf3-4d14-aefb-002cb98bea5b/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-13 17:32:55,048 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-13 17:32:55,049 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 17:32:55,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-13 17:32:55,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:32:55,396 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-13 17:32:55,397 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:32:57,854 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-13 17:32:57,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1315942991] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 17:32:57,855 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-13 17:32:57,855 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 12 [2021-11-13 17:32:57,856 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184590604] [2021-11-13 17:32:57,856 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-13 17:32:57,857 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-13 17:32:57,857 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:32:57,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-13 17:32:57,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=97, Unknown=1, NotChecked=0, Total=132 [2021-11-13 17:32:57,861 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 199 [2021-11-13 17:32:57,871 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 180 transitions, 450 flow. Second operand has 12 states, 12 states have (on average 163.75) internal successors, (1965), 12 states have internal predecessors, (1965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:32:57,871 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 17:32:57,871 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 199 [2021-11-13 17:32:57,871 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 17:32:58,718 INFO L129 PetriNetUnfolder]: 275/1629 cut-off events. [2021-11-13 17:32:58,718 INFO L130 PetriNetUnfolder]: For 676/681 co-relation queries the response was YES. [2021-11-13 17:32:58,726 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2714 conditions, 1629 events. 275/1629 cut-off events. For 676/681 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 10282 event pairs, 56 based on Foata normal form. 40/1577 useless extension candidates. Maximal degree in co-relation 2702. Up to 144 conditions per place. [2021-11-13 17:32:58,735 INFO L132 encePairwiseOnDemand]: 189/199 looper letters, 114 selfloop transitions, 46 changer transitions 3/313 dead transitions. [2021-11-13 17:32:58,735 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 313 transitions, 1269 flow [2021-11-13 17:32:58,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-13 17:32:58,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-11-13 17:32:58,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 3225 transitions. [2021-11-13 17:32:58,746 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.85294895530283 [2021-11-13 17:32:58,746 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 3225 transitions. [2021-11-13 17:32:58,746 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 3225 transitions. [2021-11-13 17:32:58,749 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 17:32:58,749 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 3225 transitions. [2021-11-13 17:32:58,758 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 169.73684210526315) internal successors, (3225), 19 states have internal predecessors, (3225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:32:58,768 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 199.0) internal successors, (3980), 20 states have internal predecessors, (3980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:32:58,772 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 199.0) internal successors, (3980), 20 states have internal predecessors, (3980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:32:58,773 INFO L186 Difference]: Start difference. First operand has 189 places, 180 transitions, 450 flow. Second operand 19 states and 3225 transitions. [2021-11-13 17:32:58,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 313 transitions, 1269 flow [2021-11-13 17:32:58,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 313 transitions, 1231 flow, removed 11 selfloop flow, removed 2 redundant places. [2021-11-13 17:32:58,789 INFO L242 Difference]: Finished difference. Result has 216 places, 225 transitions, 854 flow [2021-11-13 17:32:58,790 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=441, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=854, PETRI_PLACES=216, PETRI_TRANSITIONS=225} [2021-11-13 17:32:58,792 INFO L334 CegarLoopForPetriNet]: 179 programPoint places, 37 predicate places. [2021-11-13 17:32:58,793 INFO L470 AbstractCegarLoop]: Abstraction has has 216 places, 225 transitions, 854 flow [2021-11-13 17:32:58,794 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 163.75) internal successors, (1965), 12 states have internal predecessors, (1965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:32:58,794 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 17:32:58,794 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:32:58,832 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8726b7d7-8bf3-4d14-aefb-002cb98bea5b/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-13 17:32:59,017 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8726b7d7-8bf3-4d14-aefb-002cb98bea5b/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-11-13 17:32:59,017 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-13 17:32:59,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:32:59,018 INFO L85 PathProgramCache]: Analyzing trace with hash 1797454823, now seen corresponding path program 1 times [2021-11-13 17:32:59,018 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:32:59,018 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196157886] [2021-11-13 17:32:59,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:32:59,018 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:32:59,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:59,151 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-13 17:32:59,151 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:32:59,152 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196157886] [2021-11-13 17:32:59,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196157886] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:32:59,153 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:32:59,153 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-13 17:32:59,154 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468777391] [2021-11-13 17:32:59,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:32:59,154 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 17:32:59,155 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:32:59,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 17:32:59,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-13 17:32:59,157 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 199 [2021-11-13 17:32:59,159 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 225 transitions, 854 flow. Second operand has 5 states, 5 states have (on average 166.0) internal successors, (830), 5 states have internal predecessors, (830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:32:59,159 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 17:32:59,159 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 199 [2021-11-13 17:32:59,159 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 17:32:59,493 INFO L129 PetriNetUnfolder]: 227/1450 cut-off events. [2021-11-13 17:32:59,494 INFO L130 PetriNetUnfolder]: For 1990/2003 co-relation queries the response was YES. [2021-11-13 17:32:59,503 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2949 conditions, 1450 events. 227/1450 cut-off events. For 1990/2003 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 8824 event pairs, 82 based on Foata normal form. 14/1380 useless extension candidates. Maximal degree in co-relation 2926. Up to 306 conditions per place. [2021-11-13 17:32:59,512 INFO L132 encePairwiseOnDemand]: 192/199 looper letters, 82 selfloop transitions, 10 changer transitions 3/249 dead transitions. [2021-11-13 17:32:59,512 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 249 transitions, 1134 flow [2021-11-13 17:32:59,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 17:32:59,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-11-13 17:32:59,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1025 transitions. [2021-11-13 17:32:59,517 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8584589614740369 [2021-11-13 17:32:59,517 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1025 transitions. [2021-11-13 17:32:59,517 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1025 transitions. [2021-11-13 17:32:59,518 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 17:32:59,518 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1025 transitions. [2021-11-13 17:32:59,521 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 170.83333333333334) internal successors, (1025), 6 states have internal predecessors, (1025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:32:59,524 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 199.0) internal successors, (1393), 7 states have internal predecessors, (1393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:32:59,525 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 199.0) internal successors, (1393), 7 states have internal predecessors, (1393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:32:59,525 INFO L186 Difference]: Start difference. First operand has 216 places, 225 transitions, 854 flow. Second operand 6 states and 1025 transitions. [2021-11-13 17:32:59,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 249 transitions, 1134 flow [2021-11-13 17:32:59,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 249 transitions, 1105 flow, removed 8 selfloop flow, removed 2 redundant places. [2021-11-13 17:32:59,545 INFO L242 Difference]: Finished difference. Result has 221 places, 226 transitions, 879 flow [2021-11-13 17:32:59,545 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=826, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=879, PETRI_PLACES=221, PETRI_TRANSITIONS=226} [2021-11-13 17:32:59,546 INFO L334 CegarLoopForPetriNet]: 179 programPoint places, 42 predicate places. [2021-11-13 17:32:59,546 INFO L470 AbstractCegarLoop]: Abstraction has has 221 places, 226 transitions, 879 flow [2021-11-13 17:32:59,547 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 166.0) internal successors, (830), 5 states have internal predecessors, (830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:32:59,547 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 17:32:59,548 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:32:59,548 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-13 17:32:59,548 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-13 17:32:59,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:32:59,549 INFO L85 PathProgramCache]: Analyzing trace with hash -69345909, now seen corresponding path program 2 times [2021-11-13 17:32:59,549 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:32:59,549 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055260269] [2021-11-13 17:32:59,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:32:59,549 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:32:59,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:59,930 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-13 17:32:59,930 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:32:59,930 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055260269] [2021-11-13 17:32:59,930 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055260269] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 17:32:59,930 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1575465573] [2021-11-13 17:32:59,930 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-13 17:32:59,930 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 17:32:59,931 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8726b7d7-8bf3-4d14-aefb-002cb98bea5b/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:32:59,931 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8726b7d7-8bf3-4d14-aefb-002cb98bea5b/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 17:32:59,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8726b7d7-8bf3-4d14-aefb-002cb98bea5b/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-13 17:33:00,045 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-13 17:33:00,045 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 17:33:00,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-13 17:33:00,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:33:00,440 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-13 17:33:00,440 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-13 17:33:00,440 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1575465573] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:33:00,440 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 17:33:00,441 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [14] total 16 [2021-11-13 17:33:00,441 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379471307] [2021-11-13 17:33:00,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:33:00,442 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 17:33:00,442 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:33:00,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 17:33:00,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2021-11-13 17:33:00,444 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 199 [2021-11-13 17:33:00,445 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 226 transitions, 879 flow. Second operand has 5 states, 5 states have (on average 166.0) internal successors, (830), 5 states have internal predecessors, (830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:33:00,446 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 17:33:00,446 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 199 [2021-11-13 17:33:00,446 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 17:33:00,869 INFO L129 PetriNetUnfolder]: 251/1614 cut-off events. [2021-11-13 17:33:00,869 INFO L130 PetriNetUnfolder]: For 2313/2329 co-relation queries the response was YES. [2021-11-13 17:33:00,879 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3302 conditions, 1614 events. 251/1614 cut-off events. For 2313/2329 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 10199 event pairs, 73 based on Foata normal form. 20/1536 useless extension candidates. Maximal degree in co-relation 3276. Up to 298 conditions per place. [2021-11-13 17:33:00,890 INFO L132 encePairwiseOnDemand]: 192/199 looper letters, 77 selfloop transitions, 24 changer transitions 4/259 dead transitions. [2021-11-13 17:33:00,890 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 259 transitions, 1294 flow [2021-11-13 17:33:00,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 17:33:00,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-11-13 17:33:00,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1196 transitions. [2021-11-13 17:33:00,894 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8585786073223259 [2021-11-13 17:33:00,895 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1196 transitions. [2021-11-13 17:33:00,895 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1196 transitions. [2021-11-13 17:33:00,896 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 17:33:00,896 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1196 transitions. [2021-11-13 17:33:00,899 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 170.85714285714286) internal successors, (1196), 7 states have internal predecessors, (1196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:33:00,903 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 199.0) internal successors, (1592), 8 states have internal predecessors, (1592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:33:00,904 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 199.0) internal successors, (1592), 8 states have internal predecessors, (1592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:33:00,904 INFO L186 Difference]: Start difference. First operand has 221 places, 226 transitions, 879 flow. Second operand 7 states and 1196 transitions. [2021-11-13 17:33:00,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 259 transitions, 1294 flow [2021-11-13 17:33:00,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 259 transitions, 1263 flow, removed 8 selfloop flow, removed 3 redundant places. [2021-11-13 17:33:00,922 INFO L242 Difference]: Finished difference. Result has 226 places, 231 transitions, 975 flow [2021-11-13 17:33:00,922 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=858, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=975, PETRI_PLACES=226, PETRI_TRANSITIONS=231} [2021-11-13 17:33:00,923 INFO L334 CegarLoopForPetriNet]: 179 programPoint places, 47 predicate places. [2021-11-13 17:33:00,923 INFO L470 AbstractCegarLoop]: Abstraction has has 226 places, 231 transitions, 975 flow [2021-11-13 17:33:00,924 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 166.0) internal successors, (830), 5 states have internal predecessors, (830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:33:00,924 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 17:33:00,925 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:33:00,961 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8726b7d7-8bf3-4d14-aefb-002cb98bea5b/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-13 17:33:01,153 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8726b7d7-8bf3-4d14-aefb-002cb98bea5b/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 17:33:01,153 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-13 17:33:01,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:33:01,154 INFO L85 PathProgramCache]: Analyzing trace with hash -1759479273, now seen corresponding path program 1 times [2021-11-13 17:33:01,154 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:33:01,154 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738500925] [2021-11-13 17:33:01,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:33:01,155 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:33:01,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:01,348 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-13 17:33:01,348 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:33:01,348 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738500925] [2021-11-13 17:33:01,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738500925] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 17:33:01,349 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1469102706] [2021-11-13 17:33:01,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:33:01,349 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 17:33:01,349 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8726b7d7-8bf3-4d14-aefb-002cb98bea5b/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:33:01,351 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8726b7d7-8bf3-4d14-aefb-002cb98bea5b/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 17:33:01,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8726b7d7-8bf3-4d14-aefb-002cb98bea5b/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-13 17:33:01,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:01,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 38 conjunts are in the unsatisfiable core [2021-11-13 17:33:01,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:33:02,085 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Shadow problem: [~x1~0] [2021-11-13 17:33:02,085 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-13 17:33:02,085 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-11-13 17:33:02,086 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540327337] [2021-11-13 17:33:02,086 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-13 17:33:02,086 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 17:33:02,086 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:33:02,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 17:33:02,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2021-11-13 17:33:02,089 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 199 [2021-11-13 17:33:02,091 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 231 transitions, 975 flow. Second operand has 8 states, 8 states have (on average 172.375) internal successors, (1379), 8 states have internal predecessors, (1379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:33:02,091 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 17:33:02,091 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 199 [2021-11-13 17:33:02,091 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 17:33:02,518 INFO L129 PetriNetUnfolder]: 148/1194 cut-off events. [2021-11-13 17:33:02,518 INFO L130 PetriNetUnfolder]: For 1737/1891 co-relation queries the response was YES. [2021-11-13 17:33:02,526 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2452 conditions, 1194 events. 148/1194 cut-off events. For 1737/1891 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 6962 event pairs, 6 based on Foata normal form. 66/1178 useless extension candidates. Maximal degree in co-relation 2424. Up to 103 conditions per place. [2021-11-13 17:33:02,533 INFO L132 encePairwiseOnDemand]: 192/199 looper letters, 66 selfloop transitions, 33 changer transitions 0/275 dead transitions. [2021-11-13 17:33:02,533 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 275 transitions, 1440 flow [2021-11-13 17:33:02,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-13 17:33:02,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-11-13 17:33:02,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1752 transitions. [2021-11-13 17:33:02,539 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8804020100502512 [2021-11-13 17:33:02,539 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1752 transitions. [2021-11-13 17:33:02,540 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1752 transitions. [2021-11-13 17:33:02,541 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 17:33:02,541 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1752 transitions. [2021-11-13 17:33:02,546 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 175.2) internal successors, (1752), 10 states have internal predecessors, (1752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:33:02,551 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 199.0) internal successors, (2189), 11 states have internal predecessors, (2189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:33:02,553 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 199.0) internal successors, (2189), 11 states have internal predecessors, (2189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:33:02,553 INFO L186 Difference]: Start difference. First operand has 226 places, 231 transitions, 975 flow. Second operand 10 states and 1752 transitions. [2021-11-13 17:33:02,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 275 transitions, 1440 flow [2021-11-13 17:33:02,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 275 transitions, 1380 flow, removed 4 selfloop flow, removed 4 redundant places. [2021-11-13 17:33:02,569 INFO L242 Difference]: Finished difference. Result has 234 places, 239 transitions, 1080 flow [2021-11-13 17:33:02,569 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=922, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1080, PETRI_PLACES=234, PETRI_TRANSITIONS=239} [2021-11-13 17:33:02,570 INFO L334 CegarLoopForPetriNet]: 179 programPoint places, 55 predicate places. [2021-11-13 17:33:02,570 INFO L470 AbstractCegarLoop]: Abstraction has has 234 places, 239 transitions, 1080 flow [2021-11-13 17:33:02,571 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 172.375) internal successors, (1379), 8 states have internal predecessors, (1379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:33:02,571 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 17:33:02,572 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:33:02,609 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8726b7d7-8bf3-4d14-aefb-002cb98bea5b/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-13 17:33:02,797 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8726b7d7-8bf3-4d14-aefb-002cb98bea5b/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 17:33:02,797 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-13 17:33:02,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:33:02,798 INFO L85 PathProgramCache]: Analyzing trace with hash -111470120, now seen corresponding path program 2 times [2021-11-13 17:33:02,798 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:33:02,798 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916860835] [2021-11-13 17:33:02,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:33:02,798 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:33:02,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:03,064 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-13 17:33:03,064 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:33:03,065 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916860835] [2021-11-13 17:33:03,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916860835] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 17:33:03,065 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2014805595] [2021-11-13 17:33:03,065 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-13 17:33:03,065 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 17:33:03,065 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8726b7d7-8bf3-4d14-aefb-002cb98bea5b/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:33:03,066 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8726b7d7-8bf3-4d14-aefb-002cb98bea5b/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 17:33:03,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8726b7d7-8bf3-4d14-aefb-002cb98bea5b/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-13 17:33:03,180 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-13 17:33:03,180 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 17:33:03,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 50 conjunts are in the unsatisfiable core [2021-11-13 17:33:03,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:33:03,249 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-13 17:33:03,280 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-13 17:33:03,281 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2021-11-13 17:33:03,582 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-11-13 17:33:03,582 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 16 treesize of output 18 [2021-11-13 17:33:03,730 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-11-13 17:33:04,091 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-13 17:33:04,174 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-13 17:33:04,628 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Shadow problem: [~x2~0] [2021-11-13 17:33:04,629 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-13 17:33:04,629 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-11-13 17:33:04,629 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384690719] [2021-11-13 17:33:04,629 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-13 17:33:04,630 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-13 17:33:04,630 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:33:04,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-13 17:33:04,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=734, Unknown=0, NotChecked=0, Total=812 [2021-11-13 17:33:04,634 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 199 [2021-11-13 17:33:04,636 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 239 transitions, 1080 flow. Second operand has 10 states, 10 states have (on average 172.3) internal successors, (1723), 10 states have internal predecessors, (1723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:33:04,636 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 17:33:04,636 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 199 [2021-11-13 17:33:04,636 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 17:33:05,312 INFO L129 PetriNetUnfolder]: 182/1398 cut-off events. [2021-11-13 17:33:05,312 INFO L130 PetriNetUnfolder]: For 2528/2707 co-relation queries the response was YES. [2021-11-13 17:33:05,323 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3067 conditions, 1398 events. 182/1398 cut-off events. For 2528/2707 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 8675 event pairs, 7 based on Foata normal form. 85/1395 useless extension candidates. Maximal degree in co-relation 3037. Up to 103 conditions per place. [2021-11-13 17:33:05,332 INFO L132 encePairwiseOnDemand]: 192/199 looper letters, 86 selfloop transitions, 39 changer transitions 0/301 dead transitions. [2021-11-13 17:33:05,332 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 301 transitions, 1718 flow [2021-11-13 17:33:05,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-13 17:33:05,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-11-13 17:33:05,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2275 transitions. [2021-11-13 17:33:05,340 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8793969849246231 [2021-11-13 17:33:05,340 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2275 transitions. [2021-11-13 17:33:05,340 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2275 transitions. [2021-11-13 17:33:05,342 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 17:33:05,342 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2275 transitions. [2021-11-13 17:33:05,348 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 175.0) internal successors, (2275), 13 states have internal predecessors, (2275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:33:05,355 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 199.0) internal successors, (2786), 14 states have internal predecessors, (2786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:33:05,357 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 199.0) internal successors, (2786), 14 states have internal predecessors, (2786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:33:05,357 INFO L186 Difference]: Start difference. First operand has 234 places, 239 transitions, 1080 flow. Second operand 13 states and 2275 transitions. [2021-11-13 17:33:05,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 301 transitions, 1718 flow [2021-11-13 17:33:05,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 301 transitions, 1667 flow, removed 12 selfloop flow, removed 3 redundant places. [2021-11-13 17:33:05,375 INFO L242 Difference]: Finished difference. Result has 246 places, 245 transitions, 1185 flow [2021-11-13 17:33:05,376 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=1037, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1185, PETRI_PLACES=246, PETRI_TRANSITIONS=245} [2021-11-13 17:33:05,377 INFO L334 CegarLoopForPetriNet]: 179 programPoint places, 67 predicate places. [2021-11-13 17:33:05,377 INFO L470 AbstractCegarLoop]: Abstraction has has 246 places, 245 transitions, 1185 flow [2021-11-13 17:33:05,378 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 172.3) internal successors, (1723), 10 states have internal predecessors, (1723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:33:05,379 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 17:33:05,379 INFO L254 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:33:05,419 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8726b7d7-8bf3-4d14-aefb-002cb98bea5b/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-13 17:33:05,605 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8726b7d7-8bf3-4d14-aefb-002cb98bea5b/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 17:33:05,605 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-13 17:33:05,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:33:05,606 INFO L85 PathProgramCache]: Analyzing trace with hash -1472753457, now seen corresponding path program 3 times [2021-11-13 17:33:05,606 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:33:05,606 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476533992] [2021-11-13 17:33:05,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:33:05,606 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:33:05,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:07,482 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 79 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-13 17:33:07,483 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:33:07,483 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476533992] [2021-11-13 17:33:07,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476533992] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 17:33:07,483 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1823174116] [2021-11-13 17:33:07,483 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-13 17:33:07,483 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 17:33:07,483 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8726b7d7-8bf3-4d14-aefb-002cb98bea5b/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:33:07,489 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8726b7d7-8bf3-4d14-aefb-002cb98bea5b/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 17:33:07,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8726b7d7-8bf3-4d14-aefb-002cb98bea5b/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-13 17:33:07,673 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-11-13 17:33:07,673 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 17:33:07,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 35 conjunts are in the unsatisfiable core [2021-11-13 17:33:07,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:33:08,405 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Shadow problem: [~x2~0] [2021-11-13 17:33:08,405 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-13 17:33:08,405 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2021-11-13 17:33:08,405 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411238683] [2021-11-13 17:33:08,406 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-13 17:33:08,406 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2021-11-13 17:33:08,406 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:33:08,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-11-13 17:33:08,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=1873, Unknown=0, NotChecked=0, Total=2070 [2021-11-13 17:33:08,411 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 199 [2021-11-13 17:33:08,416 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 245 transitions, 1185 flow. Second operand has 36 states, 36 states have (on average 94.66666666666667) internal successors, (3408), 36 states have internal predecessors, (3408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:33:08,416 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 17:33:08,416 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 199 [2021-11-13 17:33:08,416 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 17:33:14,480 INFO L129 PetriNetUnfolder]: 6488/15640 cut-off events. [2021-11-13 17:33:14,480 INFO L130 PetriNetUnfolder]: For 7203/7223 co-relation queries the response was YES. [2021-11-13 17:33:14,705 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32867 conditions, 15640 events. 6488/15640 cut-off events. For 7203/7223 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 140104 event pairs, 1666 based on Foata normal form. 15/14802 useless extension candidates. Maximal degree in co-relation 32834. Up to 4785 conditions per place. [2021-11-13 17:33:14,795 INFO L132 encePairwiseOnDemand]: 161/199 looper letters, 266 selfloop transitions, 91 changer transitions 15/525 dead transitions. [2021-11-13 17:33:14,795 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 525 transitions, 2566 flow [2021-11-13 17:33:14,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-11-13 17:33:14,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2021-11-13 17:33:14,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 4697 transitions. [2021-11-13 17:33:14,815 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5021918101144018 [2021-11-13 17:33:14,815 INFO L72 ComplementDD]: Start complementDD. Operand 47 states and 4697 transitions. [2021-11-13 17:33:14,815 INFO L73 IsDeterministic]: Start isDeterministic. Operand 47 states and 4697 transitions. [2021-11-13 17:33:14,819 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 17:33:14,819 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 47 states and 4697 transitions. [2021-11-13 17:33:14,835 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 48 states, 47 states have (on average 99.93617021276596) internal successors, (4697), 47 states have internal predecessors, (4697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:33:14,855 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 48 states, 48 states have (on average 199.0) internal successors, (9552), 48 states have internal predecessors, (9552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:33:14,859 INFO L81 ComplementDD]: Finished complementDD. Result has 48 states, 48 states have (on average 199.0) internal successors, (9552), 48 states have internal predecessors, (9552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:33:14,860 INFO L186 Difference]: Start difference. First operand has 246 places, 245 transitions, 1185 flow. Second operand 47 states and 4697 transitions. [2021-11-13 17:33:14,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 525 transitions, 2566 flow [2021-11-13 17:33:14,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 525 transitions, 2476 flow, removed 12 selfloop flow, removed 9 redundant places. [2021-11-13 17:33:14,922 INFO L242 Difference]: Finished difference. Result has 312 places, 335 transitions, 1737 flow [2021-11-13 17:33:14,923 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=1095, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=47, PETRI_FLOW=1737, PETRI_PLACES=312, PETRI_TRANSITIONS=335} [2021-11-13 17:33:14,923 INFO L334 CegarLoopForPetriNet]: 179 programPoint places, 133 predicate places. [2021-11-13 17:33:14,924 INFO L470 AbstractCegarLoop]: Abstraction has has 312 places, 335 transitions, 1737 flow [2021-11-13 17:33:14,925 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 94.66666666666667) internal successors, (3408), 36 states have internal predecessors, (3408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:33:14,925 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 17:33:14,926 INFO L254 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:33:14,963 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8726b7d7-8bf3-4d14-aefb-002cb98bea5b/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-13 17:33:15,141 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8726b7d7-8bf3-4d14-aefb-002cb98bea5b/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-11-13 17:33:15,142 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-13 17:33:15,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:33:15,142 INFO L85 PathProgramCache]: Analyzing trace with hash 526800367, now seen corresponding path program 4 times [2021-11-13 17:33:15,142 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:33:15,142 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031626707] [2021-11-13 17:33:15,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:33:15,143 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:33:15,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:15,808 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 25 proven. 11 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-11-13 17:33:15,808 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:33:15,808 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031626707] [2021-11-13 17:33:15,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031626707] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 17:33:15,808 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [799075305] [2021-11-13 17:33:15,809 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-13 17:33:15,809 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 17:33:15,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8726b7d7-8bf3-4d14-aefb-002cb98bea5b/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:33:15,810 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8726b7d7-8bf3-4d14-aefb-002cb98bea5b/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 17:33:15,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8726b7d7-8bf3-4d14-aefb-002cb98bea5b/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-13 17:33:15,930 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-13 17:33:15,930 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 17:33:15,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 38 conjunts are in the unsatisfiable core [2021-11-13 17:33:15,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:33:16,671 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Shadow problem: [~x1~0] [2021-11-13 17:33:16,671 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-13 17:33:16,671 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2021-11-13 17:33:16,672 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839325209] [2021-11-13 17:33:16,672 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-13 17:33:16,672 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-11-13 17:33:16,673 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:33:16,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-11-13 17:33:16,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=1023, Unknown=0, NotChecked=0, Total=1122 [2021-11-13 17:33:16,679 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 199 [2021-11-13 17:33:16,681 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 335 transitions, 1737 flow. Second operand has 26 states, 26 states have (on average 92.57692307692308) internal successors, (2407), 26 states have internal predecessors, (2407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:33:16,682 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 17:33:16,682 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 199 [2021-11-13 17:33:16,682 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 17:33:42,005 INFO L129 PetriNetUnfolder]: 34716/77289 cut-off events. [2021-11-13 17:33:42,005 INFO L130 PetriNetUnfolder]: For 97010/97106 co-relation queries the response was YES. [2021-11-13 17:33:42,983 INFO L84 FinitePrefix]: Finished finitePrefix Result has 199567 conditions, 77289 events. 34716/77289 cut-off events. For 97010/97106 co-relation queries the response was YES. Maximal size of possible extension queue 1208. Compared 854501 event pairs, 8388 based on Foata normal form. 54/72777 useless extension candidates. Maximal degree in co-relation 199505. Up to 12325 conditions per place. [2021-11-13 17:33:43,236 INFO L132 encePairwiseOnDemand]: 153/199 looper letters, 654 selfloop transitions, 404 changer transitions 79/1294 dead transitions. [2021-11-13 17:33:43,236 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 391 places, 1294 transitions, 7552 flow [2021-11-13 17:33:43,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2021-11-13 17:33:43,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2021-11-13 17:33:43,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 8211 transitions. [2021-11-13 17:33:43,255 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5031866650324794 [2021-11-13 17:33:43,255 INFO L72 ComplementDD]: Start complementDD. Operand 82 states and 8211 transitions. [2021-11-13 17:33:43,256 INFO L73 IsDeterministic]: Start isDeterministic. Operand 82 states and 8211 transitions. [2021-11-13 17:33:43,263 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 17:33:43,263 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 82 states and 8211 transitions. [2021-11-13 17:33:43,279 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 83 states, 82 states have (on average 100.13414634146342) internal successors, (8211), 82 states have internal predecessors, (8211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:33:43,311 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 83 states, 83 states have (on average 199.0) internal successors, (16517), 83 states have internal predecessors, (16517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:33:43,317 INFO L81 ComplementDD]: Finished complementDD. Result has 83 states, 83 states have (on average 199.0) internal successors, (16517), 83 states have internal predecessors, (16517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:33:43,317 INFO L186 Difference]: Start difference. First operand has 312 places, 335 transitions, 1737 flow. Second operand 82 states and 8211 transitions. [2021-11-13 17:33:43,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 391 places, 1294 transitions, 7552 flow [2021-11-13 17:33:44,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 1294 transitions, 7356 flow, removed 59 selfloop flow, removed 11 redundant places. [2021-11-13 17:33:44,366 INFO L242 Difference]: Finished difference. Result has 436 places, 731 transitions, 5136 flow [2021-11-13 17:33:44,367 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=1653, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=335, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=82, PETRI_FLOW=5136, PETRI_PLACES=436, PETRI_TRANSITIONS=731} [2021-11-13 17:33:44,368 INFO L334 CegarLoopForPetriNet]: 179 programPoint places, 257 predicate places. [2021-11-13 17:33:44,368 INFO L470 AbstractCegarLoop]: Abstraction has has 436 places, 731 transitions, 5136 flow [2021-11-13 17:33:44,369 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 92.57692307692308) internal successors, (2407), 26 states have internal predecessors, (2407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:33:44,369 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 17:33:44,369 INFO L254 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:33:44,394 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8726b7d7-8bf3-4d14-aefb-002cb98bea5b/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-13 17:33:44,577 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8726b7d7-8bf3-4d14-aefb-002cb98bea5b/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 17:33:44,577 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-13 17:33:44,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:33:44,578 INFO L85 PathProgramCache]: Analyzing trace with hash -23925659, now seen corresponding path program 5 times [2021-11-13 17:33:44,578 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:33:44,578 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311205151] [2021-11-13 17:33:44,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:33:44,579 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:33:44,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:45,389 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 19 proven. 53 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-13 17:33:45,390 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:33:45,390 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311205151] [2021-11-13 17:33:45,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311205151] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 17:33:45,390 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [858901290] [2021-11-13 17:33:45,390 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-13 17:33:45,391 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 17:33:45,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8726b7d7-8bf3-4d14-aefb-002cb98bea5b/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:33:45,392 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8726b7d7-8bf3-4d14-aefb-002cb98bea5b/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 17:33:45,409 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8726b7d7-8bf3-4d14-aefb-002cb98bea5b/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-13 17:33:46,053 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-11-13 17:33:46,053 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 17:33:46,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 61 conjunts are in the unsatisfiable core [2021-11-13 17:33:46,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:33:47,088 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Shadow problem: [~x2~0] [2021-11-13 17:33:47,088 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-13 17:33:47,089 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2021-11-13 17:33:47,089 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958164923] [2021-11-13 17:33:47,089 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-13 17:33:47,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-11-13 17:33:47,090 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:33:47,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-11-13 17:33:47,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=1347, Unknown=0, NotChecked=0, Total=1482 [2021-11-13 17:33:47,094 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 199 [2021-11-13 17:33:47,097 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 436 places, 731 transitions, 5136 flow. Second operand has 27 states, 27 states have (on average 92.77777777777777) internal successors, (2505), 27 states have internal predecessors, (2505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:33:47,097 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 17:33:47,098 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 199 [2021-11-13 17:33:47,098 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand