./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe030_power.opt_pso.opt_rmo.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13be6ec9-592c-40cc-a961-23551b7aec56/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13be6ec9-592c-40cc-a961-23551b7aec56/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_13be6ec9-592c-40cc-a961-23551b7aec56/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13be6ec9-592c-40cc-a961-23551b7aec56/bin/uautomizer-YU5uOKAj3y/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe030_power.opt_pso.opt_rmo.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13be6ec9-592c-40cc-a961-23551b7aec56/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_13be6ec9-592c-40cc-a961-23551b7aec56/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 6e0191a7c0154db5e6d5798f5b20e5814ce0ff555e18a7acf1f1e5e323a36576 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 17:45:29,197 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 17:45:29,215 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 17:45:29,252 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 17:45:29,253 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 17:45:29,254 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 17:45:29,256 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 17:45:29,259 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 17:45:29,262 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 17:45:29,263 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 17:45:29,265 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 17:45:29,266 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 17:45:29,267 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 17:45:29,269 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 17:45:29,270 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 17:45:29,272 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 17:45:29,273 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 17:45:29,278 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 17:45:29,280 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 17:45:29,285 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 17:45:29,290 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 17:45:29,292 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 17:45:29,295 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 17:45:29,297 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 17:45:29,304 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 17:45:29,309 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 17:45:29,310 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 17:45:29,311 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 17:45:29,313 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 17:45:29,314 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 17:45:29,315 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 17:45:29,316 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 17:45:29,318 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 17:45:29,319 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 17:45:29,321 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 17:45:29,321 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 17:45:29,322 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 17:45:29,323 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 17:45:29,323 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 17:45:29,324 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 17:45:29,325 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 17:45:29,326 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13be6ec9-592c-40cc-a961-23551b7aec56/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-13 17:45:29,360 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 17:45:29,361 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 17:45:29,361 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 17:45:29,361 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 17:45:29,362 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 17:45:29,362 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 17:45:29,363 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 17:45:29,369 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 17:45:29,370 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 17:45:29,370 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 17:45:29,370 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 17:45:29,371 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 17:45:29,371 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 17:45:29,371 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 17:45:29,371 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 17:45:29,372 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 17:45:29,372 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 17:45:29,372 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 17:45:29,372 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 17:45:29,373 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 17:45:29,373 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 17:45:29,373 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 17:45:29,374 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 17:45:29,375 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 17:45:29,375 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 17:45:29,375 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 17:45:29,376 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 17:45:29,376 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 17:45:29,376 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-13 17:45:29,378 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 17:45:29,378 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-13 17:45:29,379 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-13 17:45:29,379 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 17:45:29,379 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 17:45:29,380 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_13be6ec9-592c-40cc-a961-23551b7aec56/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13be6ec9-592c-40cc-a961-23551b7aec56/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6e0191a7c0154db5e6d5798f5b20e5814ce0ff555e18a7acf1f1e5e323a36576 [2021-11-13 17:45:29,643 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 17:45:29,678 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 17:45:29,681 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 17:45:29,682 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 17:45:29,683 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 17:45:29,685 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13be6ec9-592c-40cc-a961-23551b7aec56/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/pthread-wmm/safe030_power.opt_pso.opt_rmo.opt.i [2021-11-13 17:45:29,767 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13be6ec9-592c-40cc-a961-23551b7aec56/bin/uautomizer-YU5uOKAj3y/data/20c7431e9/4aa033724d994ee088ebe364ca943a4d/FLAGf03295bf5 [2021-11-13 17:45:30,445 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 17:45:30,445 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13be6ec9-592c-40cc-a961-23551b7aec56/sv-benchmarks/c/pthread-wmm/safe030_power.opt_pso.opt_rmo.opt.i [2021-11-13 17:45:30,472 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13be6ec9-592c-40cc-a961-23551b7aec56/bin/uautomizer-YU5uOKAj3y/data/20c7431e9/4aa033724d994ee088ebe364ca943a4d/FLAGf03295bf5 [2021-11-13 17:45:30,683 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13be6ec9-592c-40cc-a961-23551b7aec56/bin/uautomizer-YU5uOKAj3y/data/20c7431e9/4aa033724d994ee088ebe364ca943a4d [2021-11-13 17:45:30,688 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 17:45:30,690 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 17:45:30,695 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 17:45:30,695 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 17:45:30,699 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 17:45:30,700 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 05:45:30" (1/1) ... [2021-11-13 17:45:30,701 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d3ca4f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:45:30, skipping insertion in model container [2021-11-13 17:45:30,702 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 05:45:30" (1/1) ... [2021-11-13 17:45:30,709 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 17:45:30,781 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 17:45:30,990 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_13be6ec9-592c-40cc-a961-23551b7aec56/sv-benchmarks/c/pthread-wmm/safe030_power.opt_pso.opt_rmo.opt.i[967,980] [2021-11-13 17:45:31,264 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 17:45:31,277 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 17:45:31,294 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_13be6ec9-592c-40cc-a961-23551b7aec56/sv-benchmarks/c/pthread-wmm/safe030_power.opt_pso.opt_rmo.opt.i[967,980] [2021-11-13 17:45:31,387 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 17:45:31,446 INFO L208 MainTranslator]: Completed translation [2021-11-13 17:45:31,446 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:45:31 WrapperNode [2021-11-13 17:45:31,447 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 17:45:31,448 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 17:45:31,449 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 17:45:31,449 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 17:45:31,458 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:45:31" (1/1) ... [2021-11-13 17:45:31,503 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:45:31" (1/1) ... [2021-11-13 17:45:31,560 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 17:45:31,563 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 17:45:31,563 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 17:45:31,563 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 17:45:31,573 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:45:31" (1/1) ... [2021-11-13 17:45:31,573 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:45:31" (1/1) ... [2021-11-13 17:45:31,589 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:45:31" (1/1) ... [2021-11-13 17:45:31,600 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:45:31" (1/1) ... [2021-11-13 17:45:31,611 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:45:31" (1/1) ... [2021-11-13 17:45:31,631 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:45:31" (1/1) ... [2021-11-13 17:45:31,634 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:45:31" (1/1) ... [2021-11-13 17:45:31,639 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 17:45:31,643 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 17:45:31,643 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 17:45:31,644 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 17:45:31,647 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:45:31" (1/1) ... [2021-11-13 17:45:31,660 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 17:45:31,673 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13be6ec9-592c-40cc-a961-23551b7aec56/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:45:31,693 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13be6ec9-592c-40cc-a961-23551b7aec56/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 17:45:31,709 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13be6ec9-592c-40cc-a961-23551b7aec56/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 17:45:31,738 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-13 17:45:31,739 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-11-13 17:45:31,739 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 17:45:31,739 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-13 17:45:31,739 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-11-13 17:45:31,740 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-11-13 17:45:31,740 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-11-13 17:45:31,740 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-11-13 17:45:31,740 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-11-13 17:45:31,741 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-11-13 17:45:31,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-13 17:45:31,741 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-11-13 17:45:31,741 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 17:45:31,742 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 17:45:31,743 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 17:45:32,878 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 17:45:32,878 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-13 17:45:32,881 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 05:45:32 BoogieIcfgContainer [2021-11-13 17:45:32,881 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 17:45:32,886 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 17:45:32,886 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 17:45:32,890 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 17:45:32,890 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 05:45:30" (1/3) ... [2021-11-13 17:45:32,891 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@506835f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 05:45:32, skipping insertion in model container [2021-11-13 17:45:32,891 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:45:31" (2/3) ... [2021-11-13 17:45:32,892 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@506835f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 05:45:32, skipping insertion in model container [2021-11-13 17:45:32,892 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 05:45:32" (3/3) ... [2021-11-13 17:45:32,894 INFO L111 eAbstractionObserver]: Analyzing ICFG safe030_power.opt_pso.opt_rmo.opt.i [2021-11-13 17:45:32,904 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-13 17:45:32,904 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 17:45:32,904 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-13 17:45:32,905 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-13 17:45:32,951 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:32,951 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:32,952 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:32,952 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:32,952 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:32,953 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:32,953 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:32,953 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:32,954 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:32,954 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:32,955 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:32,955 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:32,956 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:32,956 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:32,956 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:32,957 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:32,957 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:32,958 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:32,958 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:32,958 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:32,959 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:32,959 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:32,959 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:32,960 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:32,960 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:32,961 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:32,962 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:32,962 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:32,963 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:32,963 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:32,963 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:32,963 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:32,964 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:32,964 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:32,965 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:32,965 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:32,965 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:32,965 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:32,966 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:32,966 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:32,967 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:32,967 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:32,967 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:32,967 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:32,968 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:32,968 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:32,968 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1___VERIFIER_assert_~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:32,968 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1___VERIFIER_assert_#in~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:32,969 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1___VERIFIER_assert_~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:32,969 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1___VERIFIER_assert_#in~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:32,970 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1___VERIFIER_assert_~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:32,970 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1___VERIFIER_assert_#in~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:32,970 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1___VERIFIER_assert_~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:32,971 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1___VERIFIER_assert_#in~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:32,971 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:32,971 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:32,972 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:32,972 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:32,972 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite16#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:32,972 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite15#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:32,972 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:32,973 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:32,973 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:32,974 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:32,974 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:32,974 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite16#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:32,974 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite15#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:32,975 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:32,976 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:32,976 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:32,977 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:32,977 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:32,985 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:32,985 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:32,986 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:32,986 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:32,986 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:32,987 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:32,987 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:32,987 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:32,987 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:32,988 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:32,990 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite15#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:32,991 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:32,993 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:32,996 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite16#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:32,996 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:32,997 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:32,997 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1___VERIFIER_assert_~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:32,997 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:32,998 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:32,998 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:32,998 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:33,000 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1___VERIFIER_assert_#in~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:33,007 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:33,007 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:33,007 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:33,008 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:33,008 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-11-13 17:45:33,075 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 17:45:33,083 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 17:45:33,083 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-13 17:45:33,121 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 120 places, 112 transitions, 239 flow [2021-11-13 17:45:33,207 INFO L129 PetriNetUnfolder]: 2/109 cut-off events. [2021-11-13 17:45:33,207 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-11-13 17:45:33,212 INFO L84 FinitePrefix]: Finished finitePrefix Result has 119 conditions, 109 events. 2/109 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/105 useless extension candidates. Maximal degree in co-relation 72. Up to 2 conditions per place. [2021-11-13 17:45:33,212 INFO L82 GeneralOperation]: Start removeDead. Operand has 120 places, 112 transitions, 239 flow [2021-11-13 17:45:33,221 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 117 places, 109 transitions, 227 flow [2021-11-13 17:45:33,249 INFO L129 PetriNetUnfolder]: 0/72 cut-off events. [2021-11-13 17:45:33,249 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-11-13 17:45:33,250 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 17:45:33,250 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:45:33,251 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-11-13 17:45:33,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:45:33,261 INFO L85 PathProgramCache]: Analyzing trace with hash -2040665683, now seen corresponding path program 1 times [2021-11-13 17:45:33,270 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:45:33,271 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936594415] [2021-11-13 17:45:33,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:45:33,272 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:45:33,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:45:33,642 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 17:45:33,642 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:45:33,643 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936594415] [2021-11-13 17:45:33,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936594415] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:45:33,644 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:45:33,644 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-13 17:45:33,646 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876018939] [2021-11-13 17:45:33,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:45:33,656 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 17:45:33,656 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:45:33,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 17:45:33,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 17:45:33,695 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 112 [2021-11-13 17:45:33,703 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 109 transitions, 227 flow. Second operand has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 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 17:45:33,704 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 17:45:33,704 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 112 [2021-11-13 17:45:33,705 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 17:45:33,890 INFO L129 PetriNetUnfolder]: 17/241 cut-off events. [2021-11-13 17:45:33,890 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-11-13 17:45:33,893 INFO L84 FinitePrefix]: Finished finitePrefix Result has 293 conditions, 241 events. 17/241 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 751 event pairs, 7 based on Foata normal form. 8/237 useless extension candidates. Maximal degree in co-relation 243. Up to 27 conditions per place. [2021-11-13 17:45:33,897 INFO L132 encePairwiseOnDemand]: 107/112 looper letters, 10 selfloop transitions, 2 changer transitions 0/108 dead transitions. [2021-11-13 17:45:33,897 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 108 transitions, 249 flow [2021-11-13 17:45:33,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 17:45:33,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-11-13 17:45:33,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 314 transitions. [2021-11-13 17:45:33,920 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9345238095238095 [2021-11-13 17:45:33,921 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 314 transitions. [2021-11-13 17:45:33,921 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 314 transitions. [2021-11-13 17:45:33,926 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 17:45:33,929 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 314 transitions. [2021-11-13 17:45:33,936 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 104.66666666666667) internal successors, (314), 3 states have internal predecessors, (314), 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 17:45:33,954 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 112.0) internal successors, (448), 4 states have internal predecessors, (448), 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 17:45:33,955 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 112.0) internal successors, (448), 4 states have internal predecessors, (448), 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 17:45:33,958 INFO L186 Difference]: Start difference. First operand has 117 places, 109 transitions, 227 flow. Second operand 3 states and 314 transitions. [2021-11-13 17:45:33,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 108 transitions, 249 flow [2021-11-13 17:45:33,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 108 transitions, 246 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-11-13 17:45:33,997 INFO L242 Difference]: Finished difference. Result has 114 places, 105 transitions, 220 flow [2021-11-13 17:45:33,999 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=220, PETRI_PLACES=114, PETRI_TRANSITIONS=105} [2021-11-13 17:45:34,003 INFO L334 CegarLoopForPetriNet]: 117 programPoint places, -3 predicate places. [2021-11-13 17:45:34,005 INFO L470 AbstractCegarLoop]: Abstraction has has 114 places, 105 transitions, 220 flow [2021-11-13 17:45:34,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 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 17:45:34,006 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 17:45:34,006 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] [2021-11-13 17:45:34,007 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-13 17:45:34,007 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-11-13 17:45:34,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:45:34,008 INFO L85 PathProgramCache]: Analyzing trace with hash -690634123, now seen corresponding path program 1 times [2021-11-13 17:45:34,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:45:34,009 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435803567] [2021-11-13 17:45:34,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:45:34,009 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:45:34,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:45:34,448 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 17:45:34,449 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:45:34,449 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435803567] [2021-11-13 17:45:34,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435803567] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:45:34,450 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:45:34,451 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 17:45:34,451 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528891626] [2021-11-13 17:45:34,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:45:34,453 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 17:45:34,453 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:45:34,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 17:45:34,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-13 17:45:34,457 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 112 [2021-11-13 17:45:34,459 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 105 transitions, 220 flow. Second operand has 6 states, 6 states have (on average 92.83333333333333) internal successors, (557), 6 states have internal predecessors, (557), 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 17:45:34,459 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 17:45:34,459 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 112 [2021-11-13 17:45:34,459 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 17:45:35,017 INFO L129 PetriNetUnfolder]: 282/963 cut-off events. [2021-11-13 17:45:35,018 INFO L130 PetriNetUnfolder]: For 40/40 co-relation queries the response was YES. [2021-11-13 17:45:35,025 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1495 conditions, 963 events. 282/963 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 6343 event pairs, 42 based on Foata normal form. 0/935 useless extension candidates. Maximal degree in co-relation 1445. Up to 249 conditions per place. [2021-11-13 17:45:35,030 INFO L132 encePairwiseOnDemand]: 105/112 looper letters, 20 selfloop transitions, 3 changer transitions 48/148 dead transitions. [2021-11-13 17:45:35,030 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 148 transitions, 444 flow [2021-11-13 17:45:35,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-13 17:45:35,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-11-13 17:45:35,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 881 transitions. [2021-11-13 17:45:35,036 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8740079365079365 [2021-11-13 17:45:35,037 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 881 transitions. [2021-11-13 17:45:35,037 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 881 transitions. [2021-11-13 17:45:35,038 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 17:45:35,038 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 881 transitions. [2021-11-13 17:45:35,042 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 97.88888888888889) internal successors, (881), 9 states have internal predecessors, (881), 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 17:45:35,048 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 112.0) internal successors, (1120), 10 states have internal predecessors, (1120), 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 17:45:35,049 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 112.0) internal successors, (1120), 10 states have internal predecessors, (1120), 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 17:45:35,049 INFO L186 Difference]: Start difference. First operand has 114 places, 105 transitions, 220 flow. Second operand 9 states and 881 transitions. [2021-11-13 17:45:35,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 148 transitions, 444 flow [2021-11-13 17:45:35,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 148 transitions, 426 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-11-13 17:45:35,058 INFO L242 Difference]: Finished difference. Result has 127 places, 95 transitions, 235 flow [2021-11-13 17:45:35,058 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=235, PETRI_PLACES=127, PETRI_TRANSITIONS=95} [2021-11-13 17:45:35,059 INFO L334 CegarLoopForPetriNet]: 117 programPoint places, 10 predicate places. [2021-11-13 17:45:35,060 INFO L470 AbstractCegarLoop]: Abstraction has has 127 places, 95 transitions, 235 flow [2021-11-13 17:45:35,065 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 92.83333333333333) internal successors, (557), 6 states have internal predecessors, (557), 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 17:45:35,065 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 17:45:35,065 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] [2021-11-13 17:45:35,066 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-13 17:45:35,066 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-11-13 17:45:35,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:45:35,067 INFO L85 PathProgramCache]: Analyzing trace with hash 1140221050, now seen corresponding path program 1 times [2021-11-13 17:45:35,068 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:45:35,068 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525730371] [2021-11-13 17:45:35,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:45:35,070 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:45:35,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:45:35,361 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 17:45:35,362 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:45:35,363 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525730371] [2021-11-13 17:45:35,363 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525730371] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:45:35,363 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:45:35,363 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 17:45:35,364 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791703821] [2021-11-13 17:45:35,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:45:35,366 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 17:45:35,366 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:45:35,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 17:45:35,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-13 17:45:35,369 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 112 [2021-11-13 17:45:35,371 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 95 transitions, 235 flow. Second operand has 6 states, 6 states have (on average 92.83333333333333) internal successors, (557), 6 states have internal predecessors, (557), 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 17:45:35,371 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 17:45:35,371 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 112 [2021-11-13 17:45:35,371 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 17:45:35,933 INFO L129 PetriNetUnfolder]: 466/1063 cut-off events. [2021-11-13 17:45:35,933 INFO L130 PetriNetUnfolder]: For 760/760 co-relation queries the response was YES. [2021-11-13 17:45:35,942 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2396 conditions, 1063 events. 466/1063 cut-off events. For 760/760 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 6122 event pairs, 202 based on Foata normal form. 30/1068 useless extension candidates. Maximal degree in co-relation 2339. Up to 393 conditions per place. [2021-11-13 17:45:35,951 INFO L132 encePairwiseOnDemand]: 105/112 looper letters, 20 selfloop transitions, 3 changer transitions 34/136 dead transitions. [2021-11-13 17:45:35,951 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 136 transitions, 453 flow [2021-11-13 17:45:35,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-13 17:45:35,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-11-13 17:45:35,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 878 transitions. [2021-11-13 17:45:35,955 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.871031746031746 [2021-11-13 17:45:35,955 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 878 transitions. [2021-11-13 17:45:35,955 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 878 transitions. [2021-11-13 17:45:35,956 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 17:45:35,957 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 878 transitions. [2021-11-13 17:45:35,960 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 97.55555555555556) internal successors, (878), 9 states have internal predecessors, (878), 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 17:45:35,964 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 112.0) internal successors, (1120), 10 states have internal predecessors, (1120), 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 17:45:35,965 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 112.0) internal successors, (1120), 10 states have internal predecessors, (1120), 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 17:45:35,965 INFO L186 Difference]: Start difference. First operand has 127 places, 95 transitions, 235 flow. Second operand 9 states and 878 transitions. [2021-11-13 17:45:35,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 136 transitions, 453 flow [2021-11-13 17:45:35,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 136 transitions, 436 flow, removed 7 selfloop flow, removed 4 redundant places. [2021-11-13 17:45:35,981 INFO L242 Difference]: Finished difference. Result has 120 places, 97 transitions, 269 flow [2021-11-13 17:45:35,981 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=269, PETRI_PLACES=120, PETRI_TRANSITIONS=97} [2021-11-13 17:45:35,984 INFO L334 CegarLoopForPetriNet]: 117 programPoint places, 3 predicate places. [2021-11-13 17:45:35,984 INFO L470 AbstractCegarLoop]: Abstraction has has 120 places, 97 transitions, 269 flow [2021-11-13 17:45:35,985 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 92.83333333333333) internal successors, (557), 6 states have internal predecessors, (557), 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 17:45:35,985 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 17:45:35,985 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] [2021-11-13 17:45:35,986 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-13 17:45:35,986 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-11-13 17:45:35,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:45:35,988 INFO L85 PathProgramCache]: Analyzing trace with hash 1834518823, now seen corresponding path program 1 times [2021-11-13 17:45:35,989 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:45:35,989 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012840622] [2021-11-13 17:45:35,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:45:35,989 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:45:36,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:45:36,243 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 17:45:36,243 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:45:36,243 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012840622] [2021-11-13 17:45:36,244 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012840622] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:45:36,244 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:45:36,244 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 17:45:36,244 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326880650] [2021-11-13 17:45:36,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:45:36,245 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 17:45:36,245 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:45:36,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 17:45:36,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-13 17:45:36,247 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 112 [2021-11-13 17:45:36,248 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 97 transitions, 269 flow. Second operand has 6 states, 6 states have (on average 93.0) internal successors, (558), 6 states have internal predecessors, (558), 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 17:45:36,248 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 17:45:36,248 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 112 [2021-11-13 17:45:36,249 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 17:45:36,799 INFO L129 PetriNetUnfolder]: 380/986 cut-off events. [2021-11-13 17:45:36,799 INFO L130 PetriNetUnfolder]: For 1656/1672 co-relation queries the response was YES. [2021-11-13 17:45:36,808 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2694 conditions, 986 events. 380/986 cut-off events. For 1656/1672 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 5965 event pairs, 175 based on Foata normal form. 20/976 useless extension candidates. Maximal degree in co-relation 2632. Up to 286 conditions per place. [2021-11-13 17:45:36,841 INFO L132 encePairwiseOnDemand]: 106/112 looper letters, 25 selfloop transitions, 3 changer transitions 28/135 dead transitions. [2021-11-13 17:45:36,841 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 135 transitions, 531 flow [2021-11-13 17:45:36,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-13 17:45:36,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-11-13 17:45:36,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 876 transitions. [2021-11-13 17:45:36,847 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8690476190476191 [2021-11-13 17:45:36,847 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 876 transitions. [2021-11-13 17:45:36,847 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 876 transitions. [2021-11-13 17:45:36,848 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 17:45:36,849 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 876 transitions. [2021-11-13 17:45:36,852 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 97.33333333333333) internal successors, (876), 9 states have internal predecessors, (876), 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 17:45:36,856 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 112.0) internal successors, (1120), 10 states have internal predecessors, (1120), 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 17:45:36,856 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 112.0) internal successors, (1120), 10 states have internal predecessors, (1120), 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 17:45:36,857 INFO L186 Difference]: Start difference. First operand has 120 places, 97 transitions, 269 flow. Second operand 9 states and 876 transitions. [2021-11-13 17:45:36,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 135 transitions, 531 flow [2021-11-13 17:45:36,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 135 transitions, 500 flow, removed 14 selfloop flow, removed 4 redundant places. [2021-11-13 17:45:36,867 INFO L242 Difference]: Finished difference. Result has 125 places, 97 transitions, 281 flow [2021-11-13 17:45:36,868 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=281, PETRI_PLACES=125, PETRI_TRANSITIONS=97} [2021-11-13 17:45:36,869 INFO L334 CegarLoopForPetriNet]: 117 programPoint places, 8 predicate places. [2021-11-13 17:45:36,869 INFO L470 AbstractCegarLoop]: Abstraction has has 125 places, 97 transitions, 281 flow [2021-11-13 17:45:36,869 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 93.0) internal successors, (558), 6 states have internal predecessors, (558), 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 17:45:36,869 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 17:45:36,870 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] [2021-11-13 17:45:36,870 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-13 17:45:36,870 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-11-13 17:45:36,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:45:36,871 INFO L85 PathProgramCache]: Analyzing trace with hash -1187014733, now seen corresponding path program 1 times [2021-11-13 17:45:36,871 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:45:36,871 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223681061] [2021-11-13 17:45:36,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:45:36,871 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:45:36,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:45:37,114 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 17:45:37,114 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:45:37,114 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223681061] [2021-11-13 17:45:37,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223681061] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:45:37,115 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:45:37,115 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-13 17:45:37,115 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880370697] [2021-11-13 17:45:37,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:45:37,116 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-13 17:45:37,116 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:45:37,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-13 17:45:37,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-11-13 17:45:37,119 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 112 [2021-11-13 17:45:37,120 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 97 transitions, 281 flow. Second operand has 9 states, 9 states have (on average 91.44444444444444) internal successors, (823), 9 states have internal predecessors, (823), 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 17:45:37,121 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 17:45:37,121 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 112 [2021-11-13 17:45:37,121 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 17:45:37,724 INFO L129 PetriNetUnfolder]: 445/1246 cut-off events. [2021-11-13 17:45:37,724 INFO L130 PetriNetUnfolder]: For 3469/3517 co-relation queries the response was YES. [2021-11-13 17:45:37,733 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3518 conditions, 1246 events. 445/1246 cut-off events. For 3469/3517 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 8632 event pairs, 230 based on Foata normal form. 36/1182 useless extension candidates. Maximal degree in co-relation 3450. Up to 436 conditions per place. [2021-11-13 17:45:37,742 INFO L132 encePairwiseOnDemand]: 101/112 looper letters, 16 selfloop transitions, 9 changer transitions 34/139 dead transitions. [2021-11-13 17:45:37,743 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 139 transitions, 545 flow [2021-11-13 17:45:37,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-13 17:45:37,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2021-11-13 17:45:37,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1322 transitions. [2021-11-13 17:45:37,750 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8431122448979592 [2021-11-13 17:45:37,750 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1322 transitions. [2021-11-13 17:45:37,750 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1322 transitions. [2021-11-13 17:45:37,751 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 17:45:37,751 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1322 transitions. [2021-11-13 17:45:37,757 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 94.42857142857143) internal successors, (1322), 14 states have internal predecessors, (1322), 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 17:45:37,763 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 112.0) internal successors, (1680), 15 states have internal predecessors, (1680), 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 17:45:37,764 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 112.0) internal successors, (1680), 15 states have internal predecessors, (1680), 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 17:45:37,764 INFO L186 Difference]: Start difference. First operand has 125 places, 97 transitions, 281 flow. Second operand 14 states and 1322 transitions. [2021-11-13 17:45:37,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 139 transitions, 545 flow [2021-11-13 17:45:37,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 139 transitions, 500 flow, removed 21 selfloop flow, removed 7 redundant places. [2021-11-13 17:45:37,781 INFO L242 Difference]: Finished difference. Result has 136 places, 103 transitions, 348 flow [2021-11-13 17:45:37,781 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=348, PETRI_PLACES=136, PETRI_TRANSITIONS=103} [2021-11-13 17:45:37,785 INFO L334 CegarLoopForPetriNet]: 117 programPoint places, 19 predicate places. [2021-11-13 17:45:37,785 INFO L470 AbstractCegarLoop]: Abstraction has has 136 places, 103 transitions, 348 flow [2021-11-13 17:45:37,785 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 91.44444444444444) internal successors, (823), 9 states have internal predecessors, (823), 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 17:45:37,786 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 17:45:37,786 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] [2021-11-13 17:45:37,786 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-13 17:45:37,786 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-11-13 17:45:37,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:45:37,787 INFO L85 PathProgramCache]: Analyzing trace with hash 1159921596, now seen corresponding path program 1 times [2021-11-13 17:45:37,787 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:45:37,787 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413186431] [2021-11-13 17:45:37,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:45:37,788 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:45:37,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:45:38,049 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 17:45:38,049 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:45:38,050 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413186431] [2021-11-13 17:45:38,050 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413186431] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:45:38,050 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:45:38,050 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-13 17:45:38,051 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018511402] [2021-11-13 17:45:38,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:45:38,052 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-13 17:45:38,052 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:45:38,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-13 17:45:38,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-11-13 17:45:38,055 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 112 [2021-11-13 17:45:38,056 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 103 transitions, 348 flow. Second operand has 9 states, 9 states have (on average 91.55555555555556) internal successors, (824), 9 states have internal predecessors, (824), 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 17:45:38,057 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 17:45:38,057 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 112 [2021-11-13 17:45:38,057 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 17:45:38,557 INFO L129 PetriNetUnfolder]: 353/1000 cut-off events. [2021-11-13 17:45:38,557 INFO L130 PetriNetUnfolder]: For 4235/4324 co-relation queries the response was YES. [2021-11-13 17:45:38,566 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3606 conditions, 1000 events. 353/1000 cut-off events. For 4235/4324 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 6319 event pairs, 126 based on Foata normal form. 25/938 useless extension candidates. Maximal degree in co-relation 3529. Up to 372 conditions per place. [2021-11-13 17:45:38,575 INFO L132 encePairwiseOnDemand]: 104/112 looper letters, 22 selfloop transitions, 5 changer transitions 19/126 dead transitions. [2021-11-13 17:45:38,575 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 126 transitions, 590 flow [2021-11-13 17:45:38,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-13 17:45:38,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-11-13 17:45:38,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1034 transitions. [2021-11-13 17:45:38,580 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8392857142857143 [2021-11-13 17:45:38,580 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1034 transitions. [2021-11-13 17:45:38,581 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1034 transitions. [2021-11-13 17:45:38,582 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 17:45:38,582 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1034 transitions. [2021-11-13 17:45:38,586 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 94.0) internal successors, (1034), 11 states have internal predecessors, (1034), 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 17:45:38,589 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 112.0) internal successors, (1344), 12 states have internal predecessors, (1344), 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 17:45:38,590 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 112.0) internal successors, (1344), 12 states have internal predecessors, (1344), 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 17:45:38,590 INFO L186 Difference]: Start difference. First operand has 136 places, 103 transitions, 348 flow. Second operand 11 states and 1034 transitions. [2021-11-13 17:45:38,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 126 transitions, 590 flow [2021-11-13 17:45:38,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 126 transitions, 566 flow, removed 11 selfloop flow, removed 4 redundant places. [2021-11-13 17:45:38,603 INFO L242 Difference]: Finished difference. Result has 140 places, 103 transitions, 364 flow [2021-11-13 17:45:38,603 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=338, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=364, PETRI_PLACES=140, PETRI_TRANSITIONS=103} [2021-11-13 17:45:38,604 INFO L334 CegarLoopForPetriNet]: 117 programPoint places, 23 predicate places. [2021-11-13 17:45:38,604 INFO L470 AbstractCegarLoop]: Abstraction has has 140 places, 103 transitions, 364 flow [2021-11-13 17:45:38,605 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 91.55555555555556) internal successors, (824), 9 states have internal predecessors, (824), 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 17:45:38,605 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 17:45:38,605 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] [2021-11-13 17:45:38,606 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-13 17:45:38,606 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-11-13 17:45:38,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:45:38,606 INFO L85 PathProgramCache]: Analyzing trace with hash 553289085, now seen corresponding path program 1 times [2021-11-13 17:45:38,607 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:45:38,607 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842647589] [2021-11-13 17:45:38,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:45:38,607 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:45:38,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:45:38,718 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 17:45:38,718 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:45:38,719 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842647589] [2021-11-13 17:45:38,719 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842647589] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:45:38,719 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:45:38,719 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 17:45:38,719 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864815259] [2021-11-13 17:45:38,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:45:38,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 17:45:38,720 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:45:38,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 17:45:38,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-13 17:45:38,722 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 112 [2021-11-13 17:45:38,723 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 103 transitions, 364 flow. Second operand has 6 states, 6 states have (on average 93.16666666666667) internal successors, (559), 6 states have internal predecessors, (559), 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 17:45:38,724 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 17:45:38,724 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 112 [2021-11-13 17:45:38,724 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 17:45:39,240 INFO L129 PetriNetUnfolder]: 438/1452 cut-off events. [2021-11-13 17:45:39,240 INFO L130 PetriNetUnfolder]: For 7643/7893 co-relation queries the response was YES. [2021-11-13 17:45:39,255 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5437 conditions, 1452 events. 438/1452 cut-off events. For 7643/7893 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 11120 event pairs, 186 based on Foata normal form. 38/1411 useless extension candidates. Maximal degree in co-relation 5356. Up to 298 conditions per place. [2021-11-13 17:45:39,292 INFO L132 encePairwiseOnDemand]: 106/112 looper letters, 36 selfloop transitions, 12 changer transitions 6/135 dead transitions. [2021-11-13 17:45:39,292 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 135 transitions, 729 flow [2021-11-13 17:45:39,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-13 17:45:39,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-11-13 17:45:39,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 867 transitions. [2021-11-13 17:45:39,297 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8601190476190477 [2021-11-13 17:45:39,297 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 867 transitions. [2021-11-13 17:45:39,297 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 867 transitions. [2021-11-13 17:45:39,298 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 17:45:39,298 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 867 transitions. [2021-11-13 17:45:39,301 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 96.33333333333333) internal successors, (867), 9 states have internal predecessors, (867), 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 17:45:39,304 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 112.0) internal successors, (1120), 10 states have internal predecessors, (1120), 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 17:45:39,305 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 112.0) internal successors, (1120), 10 states have internal predecessors, (1120), 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 17:45:39,305 INFO L186 Difference]: Start difference. First operand has 140 places, 103 transitions, 364 flow. Second operand 9 states and 867 transitions. [2021-11-13 17:45:39,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 135 transitions, 729 flow [2021-11-13 17:45:39,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 135 transitions, 647 flow, removed 37 selfloop flow, removed 12 redundant places. [2021-11-13 17:45:39,330 INFO L242 Difference]: Finished difference. Result has 137 places, 112 transitions, 472 flow [2021-11-13 17:45:39,330 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=330, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=472, PETRI_PLACES=137, PETRI_TRANSITIONS=112} [2021-11-13 17:45:39,331 INFO L334 CegarLoopForPetriNet]: 117 programPoint places, 20 predicate places. [2021-11-13 17:45:39,331 INFO L470 AbstractCegarLoop]: Abstraction has has 137 places, 112 transitions, 472 flow [2021-11-13 17:45:39,332 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 93.16666666666667) internal successors, (559), 6 states have internal predecessors, (559), 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 17:45:39,332 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 17:45:39,332 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] [2021-11-13 17:45:39,333 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-13 17:45:39,333 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-11-13 17:45:39,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:45:39,334 INFO L85 PathProgramCache]: Analyzing trace with hash 1073467511, now seen corresponding path program 1 times [2021-11-13 17:45:39,334 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:45:39,334 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700336439] [2021-11-13 17:45:39,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:45:39,335 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:45:39,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:45:39,565 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 17:45:39,565 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:45:39,565 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700336439] [2021-11-13 17:45:39,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700336439] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:45:39,566 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:45:39,566 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-13 17:45:39,566 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432225831] [2021-11-13 17:45:39,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:45:39,567 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-13 17:45:39,567 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:45:39,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-13 17:45:39,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-13 17:45:39,569 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 112 [2021-11-13 17:45:39,571 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 112 transitions, 472 flow. Second operand has 10 states, 10 states have (on average 89.6) internal successors, (896), 10 states have internal predecessors, (896), 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 17:45:39,571 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 17:45:39,571 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 112 [2021-11-13 17:45:39,571 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 17:45:40,234 INFO L129 PetriNetUnfolder]: 628/1889 cut-off events. [2021-11-13 17:45:40,235 INFO L130 PetriNetUnfolder]: For 9328/9583 co-relation queries the response was YES. [2021-11-13 17:45:40,252 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7023 conditions, 1889 events. 628/1889 cut-off events. For 9328/9583 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 15972 event pairs, 321 based on Foata normal form. 59/1807 useless extension candidates. Maximal degree in co-relation 6942. Up to 548 conditions per place. [2021-11-13 17:45:40,262 INFO L132 encePairwiseOnDemand]: 100/112 looper letters, 17 selfloop transitions, 11 changer transitions 41/147 dead transitions. [2021-11-13 17:45:40,263 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 147 transitions, 898 flow [2021-11-13 17:45:40,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-13 17:45:40,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2021-11-13 17:45:40,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1282 transitions. [2021-11-13 17:45:40,268 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8176020408163265 [2021-11-13 17:45:40,268 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1282 transitions. [2021-11-13 17:45:40,268 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1282 transitions. [2021-11-13 17:45:40,270 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 17:45:40,270 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1282 transitions. [2021-11-13 17:45:40,274 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 91.57142857142857) internal successors, (1282), 14 states have internal predecessors, (1282), 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 17:45:40,278 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 112.0) internal successors, (1680), 15 states have internal predecessors, (1680), 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 17:45:40,279 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 112.0) internal successors, (1680), 15 states have internal predecessors, (1680), 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 17:45:40,279 INFO L186 Difference]: Start difference. First operand has 137 places, 112 transitions, 472 flow. Second operand 14 states and 1282 transitions. [2021-11-13 17:45:40,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 147 transitions, 898 flow [2021-11-13 17:45:40,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 147 transitions, 837 flow, removed 29 selfloop flow, removed 1 redundant places. [2021-11-13 17:45:40,321 INFO L242 Difference]: Finished difference. Result has 156 places, 104 transitions, 408 flow [2021-11-13 17:45:40,321 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=433, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=408, PETRI_PLACES=156, PETRI_TRANSITIONS=104} [2021-11-13 17:45:40,322 INFO L334 CegarLoopForPetriNet]: 117 programPoint places, 39 predicate places. [2021-11-13 17:45:40,322 INFO L470 AbstractCegarLoop]: Abstraction has has 156 places, 104 transitions, 408 flow [2021-11-13 17:45:40,323 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 89.6) internal successors, (896), 10 states have internal predecessors, (896), 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 17:45:40,323 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 17:45:40,323 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] [2021-11-13 17:45:40,324 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-13 17:45:40,324 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-11-13 17:45:40,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:45:40,324 INFO L85 PathProgramCache]: Analyzing trace with hash 1498464580, now seen corresponding path program 1 times [2021-11-13 17:45:40,325 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:45:40,325 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136131155] [2021-11-13 17:45:40,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:45:40,325 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:45:40,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:45:40,579 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 17:45:40,579 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:45:40,580 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136131155] [2021-11-13 17:45:40,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136131155] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:45:40,580 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:45:40,580 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-13 17:45:40,580 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141830958] [2021-11-13 17:45:40,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:45:40,581 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-13 17:45:40,581 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:45:40,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-13 17:45:40,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-13 17:45:40,585 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 112 [2021-11-13 17:45:40,586 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 104 transitions, 408 flow. Second operand has 9 states, 9 states have (on average 90.77777777777777) internal successors, (817), 9 states have internal predecessors, (817), 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 17:45:40,586 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 17:45:40,586 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 112 [2021-11-13 17:45:40,586 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 17:45:41,142 INFO L129 PetriNetUnfolder]: 293/1035 cut-off events. [2021-11-13 17:45:41,142 INFO L130 PetriNetUnfolder]: For 8781/8972 co-relation queries the response was YES. [2021-11-13 17:45:41,151 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4446 conditions, 1035 events. 293/1035 cut-off events. For 8781/8972 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 7529 event pairs, 129 based on Foata normal form. 31/978 useless extension candidates. Maximal degree in co-relation 4354. Up to 344 conditions per place. [2021-11-13 17:45:41,160 INFO L132 encePairwiseOnDemand]: 101/112 looper letters, 24 selfloop transitions, 10 changer transitions 19/132 dead transitions. [2021-11-13 17:45:41,160 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 132 transitions, 764 flow [2021-11-13 17:45:41,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-13 17:45:41,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-11-13 17:45:41,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1117 transitions. [2021-11-13 17:45:41,165 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8311011904761905 [2021-11-13 17:45:41,165 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1117 transitions. [2021-11-13 17:45:41,165 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1117 transitions. [2021-11-13 17:45:41,166 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 17:45:41,166 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1117 transitions. [2021-11-13 17:45:41,170 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 93.08333333333333) internal successors, (1117), 12 states have internal predecessors, (1117), 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 17:45:41,173 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 112.0) internal successors, (1456), 13 states have internal predecessors, (1456), 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 17:45:41,174 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 112.0) internal successors, (1456), 13 states have internal predecessors, (1456), 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 17:45:41,174 INFO L186 Difference]: Start difference. First operand has 156 places, 104 transitions, 408 flow. Second operand 12 states and 1117 transitions. [2021-11-13 17:45:41,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 132 transitions, 764 flow [2021-11-13 17:45:41,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 132 transitions, 695 flow, removed 26 selfloop flow, removed 15 redundant places. [2021-11-13 17:45:41,196 INFO L242 Difference]: Finished difference. Result has 148 places, 109 transitions, 454 flow [2021-11-13 17:45:41,196 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=363, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=454, PETRI_PLACES=148, PETRI_TRANSITIONS=109} [2021-11-13 17:45:41,197 INFO L334 CegarLoopForPetriNet]: 117 programPoint places, 31 predicate places. [2021-11-13 17:45:41,197 INFO L470 AbstractCegarLoop]: Abstraction has has 148 places, 109 transitions, 454 flow [2021-11-13 17:45:41,198 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 90.77777777777777) internal successors, (817), 9 states have internal predecessors, (817), 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 17:45:41,198 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 17:45:41,198 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] [2021-11-13 17:45:41,198 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-13 17:45:41,198 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-11-13 17:45:41,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:45:41,199 INFO L85 PathProgramCache]: Analyzing trace with hash -838172616, now seen corresponding path program 2 times [2021-11-13 17:45:41,199 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:45:41,199 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923159997] [2021-11-13 17:45:41,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:45:41,200 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:45:41,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:45:41,457 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 17:45:41,458 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:45:41,458 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923159997] [2021-11-13 17:45:41,458 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923159997] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:45:41,458 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:45:41,458 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-13 17:45:41,459 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948005794] [2021-11-13 17:45:41,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:45:41,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-13 17:45:41,459 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:45:41,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-13 17:45:41,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-11-13 17:45:41,462 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 112 [2021-11-13 17:45:41,463 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 109 transitions, 454 flow. Second operand has 11 states, 11 states have (on average 89.54545454545455) internal successors, (985), 11 states have internal predecessors, (985), 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 17:45:41,463 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 17:45:41,463 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 112 [2021-11-13 17:45:41,464 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 17:45:42,104 INFO L129 PetriNetUnfolder]: 296/1040 cut-off events. [2021-11-13 17:45:42,105 INFO L130 PetriNetUnfolder]: For 12130/12453 co-relation queries the response was YES. [2021-11-13 17:45:42,114 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5251 conditions, 1040 events. 296/1040 cut-off events. For 12130/12453 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 7568 event pairs, 129 based on Foata normal form. 36/986 useless extension candidates. Maximal degree in co-relation 5162. Up to 347 conditions per place. [2021-11-13 17:45:42,126 INFO L132 encePairwiseOnDemand]: 101/112 looper letters, 24 selfloop transitions, 14 changer transitions 19/135 dead transitions. [2021-11-13 17:45:42,126 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 135 transitions, 948 flow [2021-11-13 17:45:42,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-13 17:45:42,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-11-13 17:45:42,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1193 transitions. [2021-11-13 17:45:42,131 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8193681318681318 [2021-11-13 17:45:42,132 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1193 transitions. [2021-11-13 17:45:42,132 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1193 transitions. [2021-11-13 17:45:42,133 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 17:45:42,133 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1193 transitions. [2021-11-13 17:45:42,137 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 91.76923076923077) internal successors, (1193), 13 states have internal predecessors, (1193), 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 17:45:42,141 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 112.0) internal successors, (1568), 14 states have internal predecessors, (1568), 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 17:45:42,142 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 112.0) internal successors, (1568), 14 states have internal predecessors, (1568), 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 17:45:42,142 INFO L186 Difference]: Start difference. First operand has 148 places, 109 transitions, 454 flow. Second operand 13 states and 1193 transitions. [2021-11-13 17:45:42,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 135 transitions, 948 flow [2021-11-13 17:45:42,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 135 transitions, 848 flow, removed 46 selfloop flow, removed 8 redundant places. [2021-11-13 17:45:42,167 INFO L242 Difference]: Finished difference. Result has 153 places, 113 transitions, 520 flow [2021-11-13 17:45:42,167 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=413, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=520, PETRI_PLACES=153, PETRI_TRANSITIONS=113} [2021-11-13 17:45:42,172 INFO L334 CegarLoopForPetriNet]: 117 programPoint places, 36 predicate places. [2021-11-13 17:45:42,172 INFO L470 AbstractCegarLoop]: Abstraction has has 153 places, 113 transitions, 520 flow [2021-11-13 17:45:42,173 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 89.54545454545455) internal successors, (985), 11 states have internal predecessors, (985), 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 17:45:42,173 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 17:45:42,173 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] [2021-11-13 17:45:42,174 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-13 17:45:42,174 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-11-13 17:45:42,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:45:42,174 INFO L85 PathProgramCache]: Analyzing trace with hash 1483574374, now seen corresponding path program 3 times [2021-11-13 17:45:42,175 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:45:42,178 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994414337] [2021-11-13 17:45:42,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:45:42,179 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:45:42,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:45:42,455 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 17:45:42,455 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:45:42,456 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994414337] [2021-11-13 17:45:42,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994414337] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:45:42,456 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:45:42,456 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-13 17:45:42,457 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751431324] [2021-11-13 17:45:42,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:45:42,457 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-13 17:45:42,457 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:45:42,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-13 17:45:42,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-13 17:45:42,460 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 112 [2021-11-13 17:45:42,461 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 113 transitions, 520 flow. Second operand has 9 states, 9 states have (on average 90.77777777777777) internal successors, (817), 9 states have internal predecessors, (817), 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 17:45:42,461 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 17:45:42,461 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 112 [2021-11-13 17:45:42,462 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 17:45:43,010 INFO L129 PetriNetUnfolder]: 333/1128 cut-off events. [2021-11-13 17:45:43,011 INFO L130 PetriNetUnfolder]: For 15220/15577 co-relation queries the response was YES. [2021-11-13 17:45:43,021 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6116 conditions, 1128 events. 333/1128 cut-off events. For 15220/15577 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 8380 event pairs, 118 based on Foata normal form. 36/1062 useless extension candidates. Maximal degree in co-relation 6025. Up to 359 conditions per place. [2021-11-13 17:45:43,032 INFO L132 encePairwiseOnDemand]: 101/112 looper letters, 30 selfloop transitions, 12 changer transitions 10/131 dead transitions. [2021-11-13 17:45:43,033 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 131 transitions, 900 flow [2021-11-13 17:45:43,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-13 17:45:43,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-11-13 17:45:43,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 840 transitions. [2021-11-13 17:45:43,037 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8333333333333334 [2021-11-13 17:45:43,037 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 840 transitions. [2021-11-13 17:45:43,038 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 840 transitions. [2021-11-13 17:45:43,038 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 17:45:43,038 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 840 transitions. [2021-11-13 17:45:43,041 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 93.33333333333333) internal successors, (840), 9 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:45:43,043 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 112.0) internal successors, (1120), 10 states have internal predecessors, (1120), 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 17:45:43,044 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 112.0) internal successors, (1120), 10 states have internal predecessors, (1120), 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 17:45:43,044 INFO L186 Difference]: Start difference. First operand has 153 places, 113 transitions, 520 flow. Second operand 9 states and 840 transitions. [2021-11-13 17:45:43,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 131 transitions, 900 flow [2021-11-13 17:45:43,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 131 transitions, 807 flow, removed 45 selfloop flow, removed 8 redundant places. [2021-11-13 17:45:43,077 INFO L242 Difference]: Finished difference. Result has 151 places, 116 transitions, 557 flow [2021-11-13 17:45:43,077 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=471, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=557, PETRI_PLACES=151, PETRI_TRANSITIONS=116} [2021-11-13 17:45:43,079 INFO L334 CegarLoopForPetriNet]: 117 programPoint places, 34 predicate places. [2021-11-13 17:45:43,079 INFO L470 AbstractCegarLoop]: Abstraction has has 151 places, 116 transitions, 557 flow [2021-11-13 17:45:43,079 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 90.77777777777777) internal successors, (817), 9 states have internal predecessors, (817), 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 17:45:43,080 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 17:45:43,080 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] [2021-11-13 17:45:43,080 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-13 17:45:43,081 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-11-13 17:45:43,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:45:43,081 INFO L85 PathProgramCache]: Analyzing trace with hash -1151280054, now seen corresponding path program 4 times [2021-11-13 17:45:43,081 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:45:43,082 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364443361] [2021-11-13 17:45:43,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:45:43,082 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:45:43,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:45:43,306 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 17:45:43,306 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:45:43,306 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364443361] [2021-11-13 17:45:43,307 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364443361] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:45:43,307 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:45:43,307 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-13 17:45:43,307 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102254241] [2021-11-13 17:45:43,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:45:43,308 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-13 17:45:43,308 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:45:43,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-13 17:45:43,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-11-13 17:45:43,311 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 112 [2021-11-13 17:45:43,312 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 116 transitions, 557 flow. Second operand has 10 states, 10 states have (on average 89.7) internal successors, (897), 10 states have internal predecessors, (897), 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 17:45:43,312 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 17:45:43,312 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 112 [2021-11-13 17:45:43,312 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 17:45:43,852 INFO L129 PetriNetUnfolder]: 259/955 cut-off events. [2021-11-13 17:45:43,852 INFO L130 PetriNetUnfolder]: For 10243/10759 co-relation queries the response was YES. [2021-11-13 17:45:43,860 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4877 conditions, 955 events. 259/955 cut-off events. For 10243/10759 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 6915 event pairs, 92 based on Foata normal form. 41/907 useless extension candidates. Maximal degree in co-relation 4786. Up to 247 conditions per place. [2021-11-13 17:45:43,868 INFO L132 encePairwiseOnDemand]: 102/112 looper letters, 32 selfloop transitions, 13 changer transitions 19/142 dead transitions. [2021-11-13 17:45:43,868 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 142 transitions, 1087 flow [2021-11-13 17:45:43,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-13 17:45:43,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-11-13 17:45:43,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1106 transitions. [2021-11-13 17:45:43,871 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8229166666666666 [2021-11-13 17:45:43,871 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1106 transitions. [2021-11-13 17:45:43,871 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1106 transitions. [2021-11-13 17:45:43,872 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 17:45:43,872 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1106 transitions. [2021-11-13 17:45:43,875 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 92.16666666666667) internal successors, (1106), 12 states have internal predecessors, (1106), 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 17:45:43,878 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 112.0) internal successors, (1456), 13 states have internal predecessors, (1456), 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 17:45:43,879 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 112.0) internal successors, (1456), 13 states have internal predecessors, (1456), 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 17:45:43,879 INFO L186 Difference]: Start difference. First operand has 151 places, 116 transitions, 557 flow. Second operand 12 states and 1106 transitions. [2021-11-13 17:45:43,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 142 transitions, 1087 flow [2021-11-13 17:45:43,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 142 transitions, 1041 flow, removed 19 selfloop flow, removed 6 redundant places. [2021-11-13 17:45:43,907 INFO L242 Difference]: Finished difference. Result has 160 places, 118 transitions, 628 flow [2021-11-13 17:45:43,907 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=525, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=628, PETRI_PLACES=160, PETRI_TRANSITIONS=118} [2021-11-13 17:45:43,908 INFO L334 CegarLoopForPetriNet]: 117 programPoint places, 43 predicate places. [2021-11-13 17:45:43,908 INFO L470 AbstractCegarLoop]: Abstraction has has 160 places, 118 transitions, 628 flow [2021-11-13 17:45:43,909 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 89.7) internal successors, (897), 10 states have internal predecessors, (897), 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 17:45:43,909 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 17:45:43,909 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] [2021-11-13 17:45:43,909 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-13 17:45:43,910 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-11-13 17:45:43,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:45:43,910 INFO L85 PathProgramCache]: Analyzing trace with hash 461574388, now seen corresponding path program 1 times [2021-11-13 17:45:43,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:45:43,911 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053584479] [2021-11-13 17:45:43,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:45:43,911 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:45:43,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:45:44,172 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 17:45:44,173 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:45:44,173 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053584479] [2021-11-13 17:45:44,173 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053584479] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:45:44,173 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:45:44,174 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-13 17:45:44,174 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967951204] [2021-11-13 17:45:44,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:45:44,174 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-13 17:45:44,175 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:45:44,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-13 17:45:44,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-11-13 17:45:44,177 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 112 [2021-11-13 17:45:44,179 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 118 transitions, 628 flow. Second operand has 13 states, 13 states have (on average 87.53846153846153) internal successors, (1138), 13 states have internal predecessors, (1138), 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 17:45:44,179 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 17:45:44,179 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 112 [2021-11-13 17:45:44,180 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 17:45:44,720 INFO L129 PetriNetUnfolder]: 190/807 cut-off events. [2021-11-13 17:45:44,720 INFO L130 PetriNetUnfolder]: For 11386/11899 co-relation queries the response was YES. [2021-11-13 17:45:44,728 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4285 conditions, 807 events. 190/807 cut-off events. For 11386/11899 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 5588 event pairs, 70 based on Foata normal form. 25/764 useless extension candidates. Maximal degree in co-relation 4188. Up to 281 conditions per place. [2021-11-13 17:45:44,735 INFO L132 encePairwiseOnDemand]: 100/112 looper letters, 34 selfloop transitions, 14 changer transitions 10/134 dead transitions. [2021-11-13 17:45:44,736 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 134 transitions, 996 flow [2021-11-13 17:45:44,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-13 17:45:44,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2021-11-13 17:45:44,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1247 transitions. [2021-11-13 17:45:44,739 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.795280612244898 [2021-11-13 17:45:44,739 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1247 transitions. [2021-11-13 17:45:44,740 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1247 transitions. [2021-11-13 17:45:44,740 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 17:45:44,740 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1247 transitions. [2021-11-13 17:45:44,743 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 89.07142857142857) internal successors, (1247), 14 states have internal predecessors, (1247), 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 17:45:44,746 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 112.0) internal successors, (1680), 15 states have internal predecessors, (1680), 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 17:45:44,748 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 112.0) internal successors, (1680), 15 states have internal predecessors, (1680), 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 17:45:44,748 INFO L186 Difference]: Start difference. First operand has 160 places, 118 transitions, 628 flow. Second operand 14 states and 1247 transitions. [2021-11-13 17:45:44,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 134 transitions, 996 flow [2021-11-13 17:45:44,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 134 transitions, 898 flow, removed 39 selfloop flow, removed 10 redundant places. [2021-11-13 17:45:44,780 INFO L242 Difference]: Finished difference. Result has 165 places, 121 transitions, 675 flow [2021-11-13 17:45:44,781 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=572, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=675, PETRI_PLACES=165, PETRI_TRANSITIONS=121} [2021-11-13 17:45:44,782 INFO L334 CegarLoopForPetriNet]: 117 programPoint places, 48 predicate places. [2021-11-13 17:45:44,782 INFO L470 AbstractCegarLoop]: Abstraction has has 165 places, 121 transitions, 675 flow [2021-11-13 17:45:44,783 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 87.53846153846153) internal successors, (1138), 13 states have internal predecessors, (1138), 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 17:45:44,783 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 17:45:44,784 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] [2021-11-13 17:45:44,784 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-13 17:45:44,784 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-11-13 17:45:44,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:45:44,785 INFO L85 PathProgramCache]: Analyzing trace with hash 1741263664, now seen corresponding path program 2 times [2021-11-13 17:45:44,785 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:45:44,785 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957666516] [2021-11-13 17:45:44,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:45:44,786 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:45:44,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:45:45,051 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 17:45:45,052 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:45:45,052 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957666516] [2021-11-13 17:45:45,052 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957666516] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:45:45,052 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:45:45,053 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-13 17:45:45,053 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983041953] [2021-11-13 17:45:45,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:45:45,054 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-13 17:45:45,054 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:45:45,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-13 17:45:45,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-11-13 17:45:45,057 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 112 [2021-11-13 17:45:45,059 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 121 transitions, 675 flow. Second operand has 13 states, 13 states have (on average 88.46153846153847) internal successors, (1150), 13 states have internal predecessors, (1150), 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 17:45:45,059 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 17:45:45,059 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 112 [2021-11-13 17:45:45,060 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 17:45:45,641 INFO L129 PetriNetUnfolder]: 195/800 cut-off events. [2021-11-13 17:45:45,642 INFO L130 PetriNetUnfolder]: For 12059/12373 co-relation queries the response was YES. [2021-11-13 17:45:45,653 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4371 conditions, 800 events. 195/800 cut-off events. For 12059/12373 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 5328 event pairs, 61 based on Foata normal form. 36/762 useless extension candidates. Maximal degree in co-relation 4271. Up to 253 conditions per place. [2021-11-13 17:45:45,667 INFO L132 encePairwiseOnDemand]: 99/112 looper letters, 31 selfloop transitions, 22 changer transitions 10/140 dead transitions. [2021-11-13 17:45:45,667 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 140 transitions, 1122 flow [2021-11-13 17:45:45,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-13 17:45:45,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-11-13 17:45:45,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1353 transitions. [2021-11-13 17:45:45,675 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8053571428571429 [2021-11-13 17:45:45,675 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1353 transitions. [2021-11-13 17:45:45,675 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1353 transitions. [2021-11-13 17:45:45,676 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 17:45:45,676 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1353 transitions. [2021-11-13 17:45:45,679 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 90.2) internal successors, (1353), 15 states have internal predecessors, (1353), 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 17:45:45,683 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 112.0) internal successors, (1792), 16 states have internal predecessors, (1792), 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 17:45:45,684 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 112.0) internal successors, (1792), 16 states have internal predecessors, (1792), 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 17:45:45,684 INFO L186 Difference]: Start difference. First operand has 165 places, 121 transitions, 675 flow. Second operand 15 states and 1353 transitions. [2021-11-13 17:45:45,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 140 transitions, 1122 flow [2021-11-13 17:45:45,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 140 transitions, 1003 flow, removed 53 selfloop flow, removed 10 redundant places. [2021-11-13 17:45:45,726 INFO L242 Difference]: Finished difference. Result has 170 places, 123 transitions, 743 flow [2021-11-13 17:45:45,726 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=625, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=743, PETRI_PLACES=170, PETRI_TRANSITIONS=123} [2021-11-13 17:45:45,727 INFO L334 CegarLoopForPetriNet]: 117 programPoint places, 53 predicate places. [2021-11-13 17:45:45,728 INFO L470 AbstractCegarLoop]: Abstraction has has 170 places, 123 transitions, 743 flow [2021-11-13 17:45:45,728 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 88.46153846153847) internal successors, (1150), 13 states have internal predecessors, (1150), 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 17:45:45,728 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 17:45:45,729 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] [2021-11-13 17:45:45,729 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-13 17:45:45,729 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-11-13 17:45:45,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:45:45,730 INFO L85 PathProgramCache]: Analyzing trace with hash 86476014, now seen corresponding path program 3 times [2021-11-13 17:45:45,730 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:45:45,731 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281736967] [2021-11-13 17:45:45,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:45:45,731 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:45:45,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:45:46,078 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 17:45:46,078 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:45:46,078 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281736967] [2021-11-13 17:45:46,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281736967] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:45:46,079 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:45:46,079 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-13 17:45:46,079 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946135931] [2021-11-13 17:45:46,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:45:46,080 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-13 17:45:46,080 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:45:46,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-13 17:45:46,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2021-11-13 17:45:46,082 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 112 [2021-11-13 17:45:46,084 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 123 transitions, 743 flow. Second operand has 13 states, 13 states have (on average 87.53846153846153) internal successors, (1138), 13 states have internal predecessors, (1138), 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 17:45:46,084 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 17:45:46,084 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 112 [2021-11-13 17:45:46,084 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 17:45:46,513 INFO L129 PetriNetUnfolder]: 201/820 cut-off events. [2021-11-13 17:45:46,513 INFO L130 PetriNetUnfolder]: For 13002/13745 co-relation queries the response was YES. [2021-11-13 17:45:46,519 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4633 conditions, 820 events. 201/820 cut-off events. For 13002/13745 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 5598 event pairs, 71 based on Foata normal form. 32/775 useless extension candidates. Maximal degree in co-relation 4530. Up to 305 conditions per place. [2021-11-13 17:45:46,524 INFO L132 encePairwiseOnDemand]: 100/112 looper letters, 38 selfloop transitions, 17 changer transitions 7/138 dead transitions. [2021-11-13 17:45:46,525 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 138 transitions, 1148 flow [2021-11-13 17:45:46,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-13 17:45:46,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-11-13 17:45:46,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 984 transitions. [2021-11-13 17:45:46,529 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7987012987012987 [2021-11-13 17:45:46,530 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 984 transitions. [2021-11-13 17:45:46,530 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 984 transitions. [2021-11-13 17:45:46,530 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 17:45:46,531 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 984 transitions. [2021-11-13 17:45:46,533 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 89.45454545454545) internal successors, (984), 11 states have internal predecessors, (984), 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 17:45:46,538 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 112.0) internal successors, (1344), 12 states have internal predecessors, (1344), 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 17:45:46,538 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 112.0) internal successors, (1344), 12 states have internal predecessors, (1344), 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 17:45:46,538 INFO L186 Difference]: Start difference. First operand has 170 places, 123 transitions, 743 flow. Second operand 11 states and 984 transitions. [2021-11-13 17:45:46,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 138 transitions, 1148 flow [2021-11-13 17:45:46,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 138 transitions, 1045 flow, removed 42 selfloop flow, removed 12 redundant places. [2021-11-13 17:45:46,601 INFO L242 Difference]: Finished difference. Result has 166 places, 128 transitions, 826 flow [2021-11-13 17:45:46,602 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=684, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=826, PETRI_PLACES=166, PETRI_TRANSITIONS=128} [2021-11-13 17:45:46,603 INFO L334 CegarLoopForPetriNet]: 117 programPoint places, 49 predicate places. [2021-11-13 17:45:46,603 INFO L470 AbstractCegarLoop]: Abstraction has has 166 places, 128 transitions, 826 flow [2021-11-13 17:45:46,603 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 87.53846153846153) internal successors, (1138), 13 states have internal predecessors, (1138), 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 17:45:46,604 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 17:45:46,604 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] [2021-11-13 17:45:46,604 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-13 17:45:46,604 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-11-13 17:45:46,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:45:46,605 INFO L85 PathProgramCache]: Analyzing trace with hash -767177424, now seen corresponding path program 4 times [2021-11-13 17:45:46,605 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:45:46,606 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774831166] [2021-11-13 17:45:46,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:45:46,606 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:45:46,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:45:46,924 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 17:45:46,924 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:45:46,925 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774831166] [2021-11-13 17:45:46,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774831166] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:45:46,925 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:45:46,925 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-13 17:45:46,925 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987786342] [2021-11-13 17:45:46,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:45:46,926 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-13 17:45:46,926 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:45:46,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-13 17:45:46,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2021-11-13 17:45:46,928 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 112 [2021-11-13 17:45:46,929 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 128 transitions, 826 flow. Second operand has 13 states, 13 states have (on average 86.61538461538461) internal successors, (1126), 13 states have internal predecessors, (1126), 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 17:45:46,930 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 17:45:46,930 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 112 [2021-11-13 17:45:46,930 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 17:45:47,442 INFO L129 PetriNetUnfolder]: 159/810 cut-off events. [2021-11-13 17:45:47,443 INFO L130 PetriNetUnfolder]: For 8294/9248 co-relation queries the response was YES. [2021-11-13 17:45:47,450 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3882 conditions, 810 events. 159/810 cut-off events. For 8294/9248 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 5891 event pairs, 45 based on Foata normal form. 35/780 useless extension candidates. Maximal degree in co-relation 3779. Up to 159 conditions per place. [2021-11-13 17:45:47,455 INFO L132 encePairwiseOnDemand]: 101/112 looper letters, 44 selfloop transitions, 15 changer transitions 10/144 dead transitions. [2021-11-13 17:45:47,455 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 144 transitions, 1198 flow [2021-11-13 17:45:47,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-13 17:45:47,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2021-11-13 17:45:47,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1234 transitions. [2021-11-13 17:45:47,458 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7869897959183674 [2021-11-13 17:45:47,459 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1234 transitions. [2021-11-13 17:45:47,459 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1234 transitions. [2021-11-13 17:45:47,460 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 17:45:47,460 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1234 transitions. [2021-11-13 17:45:47,463 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 88.14285714285714) internal successors, (1234), 14 states have internal predecessors, (1234), 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 17:45:47,466 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 112.0) internal successors, (1680), 15 states have internal predecessors, (1680), 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 17:45:47,467 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 112.0) internal successors, (1680), 15 states have internal predecessors, (1680), 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 17:45:47,467 INFO L186 Difference]: Start difference. First operand has 166 places, 128 transitions, 826 flow. Second operand 14 states and 1234 transitions. [2021-11-13 17:45:47,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 144 transitions, 1198 flow [2021-11-13 17:45:47,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 144 transitions, 1099 flow, removed 38 selfloop flow, removed 9 redundant places. [2021-11-13 17:45:47,506 INFO L242 Difference]: Finished difference. Result has 174 places, 128 transitions, 797 flow [2021-11-13 17:45:47,506 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=747, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=797, PETRI_PLACES=174, PETRI_TRANSITIONS=128} [2021-11-13 17:45:47,507 INFO L334 CegarLoopForPetriNet]: 117 programPoint places, 57 predicate places. [2021-11-13 17:45:47,507 INFO L470 AbstractCegarLoop]: Abstraction has has 174 places, 128 transitions, 797 flow [2021-11-13 17:45:47,508 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 86.61538461538461) internal successors, (1126), 13 states have internal predecessors, (1126), 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 17:45:47,508 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 17:45:47,508 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] [2021-11-13 17:45:47,509 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-13 17:45:47,509 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-11-13 17:45:47,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:45:47,509 INFO L85 PathProgramCache]: Analyzing trace with hash -62838664, now seen corresponding path program 1 times [2021-11-13 17:45:47,510 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:45:47,510 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122080067] [2021-11-13 17:45:47,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:45:47,510 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:45:47,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:45:47,609 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 17:45:47,610 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:45:47,610 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122080067] [2021-11-13 17:45:47,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122080067] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:45:47,610 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:45:47,610 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 17:45:47,611 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134889308] [2021-11-13 17:45:47,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:45:47,611 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 17:45:47,612 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:45:47,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 17:45:47,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-13 17:45:47,613 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 112 [2021-11-13 17:45:47,614 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 128 transitions, 797 flow. Second operand has 6 states, 6 states have (on average 91.33333333333333) internal successors, (548), 6 states have internal predecessors, (548), 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 17:45:47,614 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 17:45:47,614 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 112 [2021-11-13 17:45:47,614 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 17:45:49,103 INFO L129 PetriNetUnfolder]: 3106/6095 cut-off events. [2021-11-13 17:45:49,103 INFO L130 PetriNetUnfolder]: For 59462/60325 co-relation queries the response was YES. [2021-11-13 17:45:49,153 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24299 conditions, 6095 events. 3106/6095 cut-off events. For 59462/60325 co-relation queries the response was YES. Maximal size of possible extension queue 569. Compared 50510 event pairs, 108 based on Foata normal form. 597/6301 useless extension candidates. Maximal degree in co-relation 24199. Up to 2132 conditions per place. [2021-11-13 17:45:49,167 INFO L132 encePairwiseOnDemand]: 102/112 looper letters, 56 selfloop transitions, 6 changer transitions 109/251 dead transitions. [2021-11-13 17:45:49,167 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 251 transitions, 2612 flow [2021-11-13 17:45:49,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-13 17:45:49,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-11-13 17:45:49,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 964 transitions. [2021-11-13 17:45:49,171 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8607142857142858 [2021-11-13 17:45:49,171 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 964 transitions. [2021-11-13 17:45:49,171 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 964 transitions. [2021-11-13 17:45:49,172 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 17:45:49,172 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 964 transitions. [2021-11-13 17:45:49,174 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 96.4) internal successors, (964), 10 states have internal predecessors, (964), 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 17:45:49,177 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 112.0) internal successors, (1232), 11 states have internal predecessors, (1232), 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 17:45:49,177 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 112.0) internal successors, (1232), 11 states have internal predecessors, (1232), 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 17:45:49,177 INFO L186 Difference]: Start difference. First operand has 174 places, 128 transitions, 797 flow. Second operand 10 states and 964 transitions. [2021-11-13 17:45:49,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 251 transitions, 2612 flow [2021-11-13 17:45:49,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 251 transitions, 2367 flow, removed 82 selfloop flow, removed 15 redundant places. [2021-11-13 17:45:49,284 INFO L242 Difference]: Finished difference. Result has 168 places, 122 transitions, 692 flow [2021-11-13 17:45:49,284 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=720, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=692, PETRI_PLACES=168, PETRI_TRANSITIONS=122} [2021-11-13 17:45:49,285 INFO L334 CegarLoopForPetriNet]: 117 programPoint places, 51 predicate places. [2021-11-13 17:45:49,285 INFO L470 AbstractCegarLoop]: Abstraction has has 168 places, 122 transitions, 692 flow [2021-11-13 17:45:49,286 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 91.33333333333333) internal successors, (548), 6 states have internal predecessors, (548), 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 17:45:49,286 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 17:45:49,286 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] [2021-11-13 17:45:49,286 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-13 17:45:49,287 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-11-13 17:45:49,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:45:49,287 INFO L85 PathProgramCache]: Analyzing trace with hash -903538231, now seen corresponding path program 1 times [2021-11-13 17:45:49,287 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:45:49,288 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113820416] [2021-11-13 17:45:49,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:45:49,288 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:45:49,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:45:49,481 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 17:45:49,482 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:45:49,482 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113820416] [2021-11-13 17:45:49,482 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113820416] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:45:49,483 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:45:49,483 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 17:45:49,483 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437543765] [2021-11-13 17:45:49,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:45:49,484 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 17:45:49,484 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:45:49,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 17:45:49,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-13 17:45:49,486 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 112 [2021-11-13 17:45:49,487 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 122 transitions, 692 flow. Second operand has 7 states, 7 states have (on average 91.14285714285714) internal successors, (638), 7 states have internal predecessors, (638), 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 17:45:49,487 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 17:45:49,487 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 112 [2021-11-13 17:45:49,487 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 17:45:50,130 INFO L129 PetriNetUnfolder]: 684/1889 cut-off events. [2021-11-13 17:45:50,130 INFO L130 PetriNetUnfolder]: For 13057/13311 co-relation queries the response was YES. [2021-11-13 17:45:50,145 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8112 conditions, 1889 events. 684/1889 cut-off events. For 13057/13311 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 14971 event pairs, 26 based on Foata normal form. 231/2073 useless extension candidates. Maximal degree in co-relation 8017. Up to 595 conditions per place. [2021-11-13 17:45:50,149 INFO L132 encePairwiseOnDemand]: 103/112 looper letters, 42 selfloop transitions, 9 changer transitions 78/208 dead transitions. [2021-11-13 17:45:50,149 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 208 transitions, 1973 flow [2021-11-13 17:45:50,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-13 17:45:50,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-11-13 17:45:50,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 962 transitions. [2021-11-13 17:45:50,153 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8589285714285714 [2021-11-13 17:45:50,153 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 962 transitions. [2021-11-13 17:45:50,153 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 962 transitions. [2021-11-13 17:45:50,154 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 17:45:50,155 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 962 transitions. [2021-11-13 17:45:50,157 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 96.2) internal successors, (962), 10 states have internal predecessors, (962), 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 17:45:50,159 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 112.0) internal successors, (1232), 11 states have internal predecessors, (1232), 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 17:45:50,160 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 112.0) internal successors, (1232), 11 states have internal predecessors, (1232), 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 17:45:50,160 INFO L186 Difference]: Start difference. First operand has 168 places, 122 transitions, 692 flow. Second operand 10 states and 962 transitions. [2021-11-13 17:45:50,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 208 transitions, 1973 flow [2021-11-13 17:45:50,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 208 transitions, 1853 flow, removed 19 selfloop flow, removed 12 redundant places. [2021-11-13 17:45:50,199 INFO L242 Difference]: Finished difference. Result has 165 places, 113 transitions, 610 flow [2021-11-13 17:45:50,200 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=589, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=610, PETRI_PLACES=165, PETRI_TRANSITIONS=113} [2021-11-13 17:45:50,201 INFO L334 CegarLoopForPetriNet]: 117 programPoint places, 48 predicate places. [2021-11-13 17:45:50,201 INFO L470 AbstractCegarLoop]: Abstraction has has 165 places, 113 transitions, 610 flow [2021-11-13 17:45:50,201 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 91.14285714285714) internal successors, (638), 7 states have internal predecessors, (638), 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 17:45:50,201 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 17:45:50,202 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:45:50,202 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-13 17:45:50,202 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-11-13 17:45:50,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:45:50,203 INFO L85 PathProgramCache]: Analyzing trace with hash -1449980042, now seen corresponding path program 1 times [2021-11-13 17:45:50,204 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:45:50,204 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788012919] [2021-11-13 17:45:50,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:45:50,204 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:45:50,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:45:50,317 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 17:45:50,318 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:45:50,318 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788012919] [2021-11-13 17:45:50,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788012919] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:45:50,318 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:45:50,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-13 17:45:50,319 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263095309] [2021-11-13 17:45:50,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:45:50,320 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 17:45:50,320 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:45:50,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 17:45:50,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-13 17:45:50,322 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 112 [2021-11-13 17:45:50,323 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 113 transitions, 610 flow. Second operand has 8 states, 8 states have (on average 91.0) internal successors, (728), 8 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:45:50,323 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 17:45:50,323 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 112 [2021-11-13 17:45:50,323 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 17:45:50,703 INFO L129 PetriNetUnfolder]: 188/789 cut-off events. [2021-11-13 17:45:50,703 INFO L130 PetriNetUnfolder]: For 4750/4851 co-relation queries the response was YES. [2021-11-13 17:45:50,709 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3286 conditions, 789 events. 188/789 cut-off events. For 4750/4851 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 5472 event pairs, 2 based on Foata normal form. 64/833 useless extension candidates. Maximal degree in co-relation 3192. Up to 213 conditions per place. [2021-11-13 17:45:50,711 INFO L132 encePairwiseOnDemand]: 103/112 looper letters, 20 selfloop transitions, 12 changer transitions 54/160 dead transitions. [2021-11-13 17:45:50,711 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 160 transitions, 1329 flow [2021-11-13 17:45:50,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-13 17:45:50,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-11-13 17:45:50,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1033 transitions. [2021-11-13 17:45:50,714 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.838474025974026 [2021-11-13 17:45:50,714 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1033 transitions. [2021-11-13 17:45:50,715 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1033 transitions. [2021-11-13 17:45:50,715 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 17:45:50,715 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1033 transitions. [2021-11-13 17:45:50,718 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 93.9090909090909) internal successors, (1033), 11 states have internal predecessors, (1033), 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 17:45:50,722 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 112.0) internal successors, (1344), 12 states have internal predecessors, (1344), 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 17:45:50,723 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 112.0) internal successors, (1344), 12 states have internal predecessors, (1344), 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 17:45:50,723 INFO L186 Difference]: Start difference. First operand has 165 places, 113 transitions, 610 flow. Second operand 11 states and 1033 transitions. [2021-11-13 17:45:50,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 160 transitions, 1329 flow [2021-11-13 17:45:50,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 160 transitions, 1024 flow, removed 100 selfloop flow, removed 24 redundant places. [2021-11-13 17:45:50,745 INFO L242 Difference]: Finished difference. Result has 153 places, 100 transitions, 389 flow [2021-11-13 17:45:50,746 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=444, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=389, PETRI_PLACES=153, PETRI_TRANSITIONS=100} [2021-11-13 17:45:50,747 INFO L334 CegarLoopForPetriNet]: 117 programPoint places, 36 predicate places. [2021-11-13 17:45:50,747 INFO L470 AbstractCegarLoop]: Abstraction has has 153 places, 100 transitions, 389 flow [2021-11-13 17:45:50,747 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 91.0) internal successors, (728), 8 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:45:50,748 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 17:45:50,748 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] [2021-11-13 17:45:50,748 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-13 17:45:50,748 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-11-13 17:45:50,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:45:50,749 INFO L85 PathProgramCache]: Analyzing trace with hash 1179912200, now seen corresponding path program 1 times [2021-11-13 17:45:50,749 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:45:50,749 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522890606] [2021-11-13 17:45:50,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:45:50,750 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:45:50,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 17:45:50,798 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-13 17:45:50,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 17:45:50,909 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-13 17:45:50,909 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-13 17:45:50,910 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2021-11-13 17:45:50,913 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2021-11-13 17:45:50,913 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION (3 of 6 remaining) [2021-11-13 17:45:50,913 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATION (2 of 6 remaining) [2021-11-13 17:45:50,914 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATION (1 of 6 remaining) [2021-11-13 17:45:50,914 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2021-11-13 17:45:50,914 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-13 17:45:50,918 INFO L732 BasicCegarLoop]: Path program histogram: [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:45:50,923 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-11-13 17:45:50,924 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-13 17:45:51,022 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.computeCurrectProc(InlinerBacktranslator.java:230) at de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.translateProgramExecution(InlinerBacktranslator.java:203) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:216) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:206) at de.uni_freiburg.informatik.ultimate.core.lib.results.CounterExampleResult.getProgramExecutionAsString(CounterExampleResult.java:155) at de.uni_freiburg.informatik.ultimate.core.lib.results.CounterExampleResult.getLongDescription(CounterExampleResult.java:134) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:86) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResultReporter.reportResult(CegarLoopResultReporter.java:141) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.reportLocationResults(TraceAbstractionStarter.java:586) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:181) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-13 17:45:51,027 INFO L158 Benchmark]: Toolchain (without parser) took 20335.98ms. Allocated memory was 90.2MB in the beginning and 476.1MB in the end (delta: 385.9MB). Free memory was 53.8MB in the beginning and 242.5MB in the end (delta: -188.7MB). Peak memory consumption was 196.4MB. Max. memory is 16.1GB. [2021-11-13 17:45:51,027 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 90.2MB. Free memory was 59.5MB in the beginning and 59.5MB in the end (delta: 27.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 17:45:51,030 INFO L158 Benchmark]: CACSL2BoogieTranslator took 752.37ms. Allocated memory was 90.2MB in the beginning and 113.2MB in the end (delta: 23.1MB). Free memory was 53.6MB in the beginning and 75.3MB in the end (delta: -21.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-13 17:45:51,030 INFO L158 Benchmark]: Boogie Procedure Inliner took 113.66ms. Allocated memory is still 113.2MB. Free memory was 75.3MB in the beginning and 72.1MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-13 17:45:51,030 INFO L158 Benchmark]: Boogie Preprocessor took 78.46ms. Allocated memory is still 113.2MB. Free memory was 72.1MB in the beginning and 70.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-13 17:45:51,031 INFO L158 Benchmark]: RCFGBuilder took 1238.23ms. Allocated memory is still 113.2MB. Free memory was 70.0MB in the beginning and 56.2MB in the end (delta: 13.8MB). Peak memory consumption was 40.4MB. Max. memory is 16.1GB. [2021-11-13 17:45:51,031 INFO L158 Benchmark]: TraceAbstraction took 18139.94ms. Allocated memory was 113.2MB in the beginning and 476.1MB in the end (delta: 362.8MB). Free memory was 55.3MB in the beginning and 242.5MB in the end (delta: -187.3MB). Peak memory consumption was 175.1MB. Max. memory is 16.1GB. [2021-11-13 17:45:51,033 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 90.2MB. Free memory was 59.5MB in the beginning and 59.5MB in the end (delta: 27.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 752.37ms. Allocated memory was 90.2MB in the beginning and 113.2MB in the end (delta: 23.1MB). Free memory was 53.6MB in the beginning and 75.3MB in the end (delta: -21.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 113.66ms. Allocated memory is still 113.2MB. Free memory was 75.3MB in the beginning and 72.1MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 78.46ms. Allocated memory is still 113.2MB. Free memory was 72.1MB in the beginning and 70.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1238.23ms. Allocated memory is still 113.2MB. Free memory was 70.0MB in the beginning and 56.2MB in the end (delta: 13.8MB). Peak memory consumption was 40.4MB. Max. memory is 16.1GB. * TraceAbstraction took 18139.94ms. Allocated memory was 113.2MB in the beginning and 476.1MB in the end (delta: 362.8MB). Free memory was 55.3MB in the beginning and 242.5MB in the end (delta: -187.3MB). Peak memory consumption was 175.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.computeCurrectProc(InlinerBacktranslator.java:230) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-13 17:45:51,086 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13be6ec9-592c-40cc-a961-23551b7aec56/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13be6ec9-592c-40cc-a961-23551b7aec56/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13be6ec9-592c-40cc-a961-23551b7aec56/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_13be6ec9-592c-40cc-a961-23551b7aec56/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13be6ec9-592c-40cc-a961-23551b7aec56/bin/uautomizer-YU5uOKAj3y/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe030_power.opt_pso.opt_rmo.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13be6ec9-592c-40cc-a961-23551b7aec56/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13be6ec9-592c-40cc-a961-23551b7aec56/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 6e0191a7c0154db5e6d5798f5b20e5814ce0ff555e18a7acf1f1e5e323a36576 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 17:45:53,531 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 17:45:53,535 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 17:45:53,588 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 17:45:53,589 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 17:45:53,594 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 17:45:53,596 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 17:45:53,602 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 17:45:53,606 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 17:45:53,611 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 17:45:53,613 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 17:45:53,615 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 17:45:53,615 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 17:45:53,618 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 17:45:53,620 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 17:45:53,625 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 17:45:53,627 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 17:45:53,628 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 17:45:53,630 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 17:45:53,638 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 17:45:53,640 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 17:45:53,642 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 17:45:53,644 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 17:45:53,647 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 17:45:53,656 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 17:45:53,656 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 17:45:53,657 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 17:45:53,659 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 17:45:53,659 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 17:45:53,661 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 17:45:53,661 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 17:45:53,662 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 17:45:53,664 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 17:45:53,665 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 17:45:53,667 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 17:45:53,667 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 17:45:53,668 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 17:45:53,669 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 17:45:53,669 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 17:45:53,671 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 17:45:53,672 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 17:45:53,672 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13be6ec9-592c-40cc-a961-23551b7aec56/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-11-13 17:45:53,715 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 17:45:53,715 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 17:45:53,716 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 17:45:53,716 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 17:45:53,717 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 17:45:53,718 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 17:45:53,719 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 17:45:53,719 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 17:45:53,720 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 17:45:53,720 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 17:45:53,721 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 17:45:53,721 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 17:45:53,722 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 17:45:53,722 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 17:45:53,722 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 17:45:53,723 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 17:45:53,723 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-13 17:45:53,723 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-13 17:45:53,723 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 17:45:53,723 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 17:45:53,724 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 17:45:53,724 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 17:45:53,724 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 17:45:53,724 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 17:45:53,725 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 17:45:53,725 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 17:45:53,725 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 17:45:53,726 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 17:45:53,726 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 17:45:53,726 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-13 17:45:53,726 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-13 17:45:53,726 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-13 17:45:53,727 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-13 17:45:53,727 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 17:45:53,727 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 17:45:53,727 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 17:45:53,728 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_13be6ec9-592c-40cc-a961-23551b7aec56/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13be6ec9-592c-40cc-a961-23551b7aec56/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6e0191a7c0154db5e6d5798f5b20e5814ce0ff555e18a7acf1f1e5e323a36576 [2021-11-13 17:45:54,098 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 17:45:54,126 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 17:45:54,129 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 17:45:54,130 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 17:45:54,131 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 17:45:54,133 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13be6ec9-592c-40cc-a961-23551b7aec56/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/pthread-wmm/safe030_power.opt_pso.opt_rmo.opt.i [2021-11-13 17:45:54,217 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13be6ec9-592c-40cc-a961-23551b7aec56/bin/uautomizer-YU5uOKAj3y/data/e61cbd740/b2fc3e89986f45b198729cc6431df972/FLAGb5dbda35c [2021-11-13 17:45:54,925 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 17:45:54,926 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13be6ec9-592c-40cc-a961-23551b7aec56/sv-benchmarks/c/pthread-wmm/safe030_power.opt_pso.opt_rmo.opt.i [2021-11-13 17:45:54,946 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13be6ec9-592c-40cc-a961-23551b7aec56/bin/uautomizer-YU5uOKAj3y/data/e61cbd740/b2fc3e89986f45b198729cc6431df972/FLAGb5dbda35c [2021-11-13 17:45:55,153 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13be6ec9-592c-40cc-a961-23551b7aec56/bin/uautomizer-YU5uOKAj3y/data/e61cbd740/b2fc3e89986f45b198729cc6431df972 [2021-11-13 17:45:55,157 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 17:45:55,158 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 17:45:55,160 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 17:45:55,160 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 17:45:55,163 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 17:45:55,165 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 05:45:55" (1/1) ... [2021-11-13 17:45:55,166 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49fa3ee6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:45:55, skipping insertion in model container [2021-11-13 17:45:55,167 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 05:45:55" (1/1) ... [2021-11-13 17:45:55,174 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 17:45:55,246 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 17:45:55,461 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_13be6ec9-592c-40cc-a961-23551b7aec56/sv-benchmarks/c/pthread-wmm/safe030_power.opt_pso.opt_rmo.opt.i[967,980] [2021-11-13 17:45:55,790 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 17:45:55,811 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 17:45:55,827 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_13be6ec9-592c-40cc-a961-23551b7aec56/sv-benchmarks/c/pthread-wmm/safe030_power.opt_pso.opt_rmo.opt.i[967,980] [2021-11-13 17:45:55,911 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 17:45:55,956 INFO L208 MainTranslator]: Completed translation [2021-11-13 17:45:55,956 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:45:55 WrapperNode [2021-11-13 17:45:55,957 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 17:45:55,958 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 17:45:55,958 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 17:45:55,958 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 17:45:55,966 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:45:55" (1/1) ... [2021-11-13 17:45:56,008 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:45:55" (1/1) ... [2021-11-13 17:45:56,080 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 17:45:56,084 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 17:45:56,084 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 17:45:56,085 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 17:45:56,094 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:45:55" (1/1) ... [2021-11-13 17:45:56,094 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:45:55" (1/1) ... [2021-11-13 17:45:56,111 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:45:55" (1/1) ... [2021-11-13 17:45:56,113 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:45:55" (1/1) ... [2021-11-13 17:45:56,135 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:45:55" (1/1) ... [2021-11-13 17:45:56,154 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:45:55" (1/1) ... [2021-11-13 17:45:56,158 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:45:55" (1/1) ... [2021-11-13 17:45:56,163 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 17:45:56,172 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 17:45:56,173 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 17:45:56,173 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 17:45:56,174 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:45:55" (1/1) ... [2021-11-13 17:45:56,183 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 17:45:56,197 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13be6ec9-592c-40cc-a961-23551b7aec56/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:45:56,225 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13be6ec9-592c-40cc-a961-23551b7aec56/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 17:45:56,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13be6ec9-592c-40cc-a961-23551b7aec56/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 17:45:56,281 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-11-13 17:45:56,282 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 17:45:56,282 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-13 17:45:56,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-13 17:45:56,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-13 17:45:56,283 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-11-13 17:45:56,283 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-11-13 17:45:56,283 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-11-13 17:45:56,283 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-11-13 17:45:56,283 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-11-13 17:45:56,284 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-11-13 17:45:56,284 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-11-13 17:45:56,284 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 17:45:56,284 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 17:45:56,286 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 17:45:57,375 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 17:45:57,375 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-13 17:45:57,378 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 05:45:57 BoogieIcfgContainer [2021-11-13 17:45:57,378 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 17:45:57,381 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 17:45:57,381 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 17:45:57,384 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 17:45:57,384 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 05:45:55" (1/3) ... [2021-11-13 17:45:57,386 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31a02646 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 05:45:57, skipping insertion in model container [2021-11-13 17:45:57,386 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:45:55" (2/3) ... [2021-11-13 17:45:57,386 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31a02646 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 05:45:57, skipping insertion in model container [2021-11-13 17:45:57,386 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 05:45:57" (3/3) ... [2021-11-13 17:45:57,388 INFO L111 eAbstractionObserver]: Analyzing ICFG safe030_power.opt_pso.opt_rmo.opt.i [2021-11-13 17:45:57,394 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-13 17:45:57,394 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 17:45:57,394 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-13 17:45:57,395 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-13 17:45:57,448 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:57,448 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:57,448 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:57,448 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:57,449 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:57,449 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:57,449 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:57,449 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:57,450 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:57,450 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:57,451 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:57,451 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:57,451 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:57,452 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:57,453 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:57,453 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:57,453 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:57,453 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:57,454 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:57,454 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:57,454 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:57,455 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:57,455 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:57,455 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:57,457 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:57,457 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:57,457 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:57,457 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:57,458 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:57,458 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:57,459 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:57,459 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:57,459 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:57,459 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:57,460 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:57,460 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:57,460 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:57,461 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:57,461 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:57,461 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:57,462 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:57,462 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:57,462 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:57,462 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:57,462 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:57,463 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:57,463 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1___VERIFIER_assert_~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:57,464 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1___VERIFIER_assert_#in~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:57,464 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1___VERIFIER_assert_~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:57,464 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1___VERIFIER_assert_#in~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:57,464 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1___VERIFIER_assert_~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:57,465 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1___VERIFIER_assert_#in~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:57,465 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1___VERIFIER_assert_~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:57,465 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1___VERIFIER_assert_#in~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:57,465 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:57,466 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:57,466 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:57,466 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:57,466 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite16#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:57,467 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite15#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:57,467 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:57,467 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:57,468 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:57,468 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:57,469 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:57,469 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite16#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:57,469 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite15#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:57,470 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:57,470 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:57,471 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:57,471 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:57,471 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:57,477 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:57,477 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:57,478 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:57,478 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:57,478 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:57,478 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:57,479 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:57,479 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:57,479 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:57,480 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:57,482 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite15#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:57,484 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:57,485 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:57,485 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite16#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:57,485 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:57,485 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:57,486 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1___VERIFIER_assert_~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:57,486 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:57,487 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:57,487 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:57,493 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:57,493 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1___VERIFIER_assert_#in~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:57,494 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:57,494 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:57,494 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:57,495 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 17:45:57,495 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-11-13 17:45:57,557 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 17:45:57,567 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 17:45:57,568 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-13 17:45:57,586 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 121 places, 113 transitions, 241 flow [2021-11-13 17:45:57,635 INFO L129 PetriNetUnfolder]: 2/110 cut-off events. [2021-11-13 17:45:57,635 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-11-13 17:45:57,643 INFO L84 FinitePrefix]: Finished finitePrefix Result has 120 conditions, 110 events. 2/110 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/106 useless extension candidates. Maximal degree in co-relation 72. Up to 2 conditions per place. [2021-11-13 17:45:57,643 INFO L82 GeneralOperation]: Start removeDead. Operand has 121 places, 113 transitions, 241 flow [2021-11-13 17:45:57,651 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 118 places, 110 transitions, 229 flow [2021-11-13 17:45:57,681 INFO L129 PetriNetUnfolder]: 0/72 cut-off events. [2021-11-13 17:45:57,681 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-11-13 17:45:57,681 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 17:45:57,682 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] [2021-11-13 17:45:57,682 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-11-13 17:45:57,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:45:57,691 INFO L85 PathProgramCache]: Analyzing trace with hash -291347095, now seen corresponding path program 1 times [2021-11-13 17:45:57,724 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:45:57,725 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1780151912] [2021-11-13 17:45:57,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:45:57,726 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:45:57,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13be6ec9-592c-40cc-a961-23551b7aec56/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:45:57,731 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13be6ec9-592c-40cc-a961-23551b7aec56/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:45:57,734 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13be6ec9-592c-40cc-a961-23551b7aec56/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-13 17:45:57,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:45:57,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 17:45:57,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:45:58,180 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 17:45:58,181 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:45:58,377 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 17:45:58,378 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:45:58,378 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1780151912] [2021-11-13 17:45:58,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1780151912] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:45:58,380 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:45:58,380 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-13 17:45:58,382 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958312455] [2021-11-13 17:45:58,383 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:45:58,393 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 17:45:58,394 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:45:58,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 17:45:58,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 17:45:58,437 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 113 [2021-11-13 17:45:58,452 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 110 transitions, 229 flow. Second operand has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 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 17:45:58,452 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 17:45:58,452 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 113 [2021-11-13 17:45:58,454 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 17:45:58,624 INFO L129 PetriNetUnfolder]: 17/242 cut-off events. [2021-11-13 17:45:58,624 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-11-13 17:45:58,626 INFO L84 FinitePrefix]: Finished finitePrefix Result has 294 conditions, 242 events. 17/242 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 754 event pairs, 7 based on Foata normal form. 8/238 useless extension candidates. Maximal degree in co-relation 243. Up to 27 conditions per place. [2021-11-13 17:45:58,629 INFO L132 encePairwiseOnDemand]: 108/113 looper letters, 10 selfloop transitions, 2 changer transitions 0/109 dead transitions. [2021-11-13 17:45:58,629 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 109 transitions, 251 flow [2021-11-13 17:45:58,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 17:45:58,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-11-13 17:45:58,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 317 transitions. [2021-11-13 17:45:58,645 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9351032448377581 [2021-11-13 17:45:58,645 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 317 transitions. [2021-11-13 17:45:58,646 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 317 transitions. [2021-11-13 17:45:58,648 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 17:45:58,651 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 317 transitions. [2021-11-13 17:45:58,655 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 105.66666666666667) internal successors, (317), 3 states have internal predecessors, (317), 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 17:45:58,662 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 113.0) internal successors, (452), 4 states have internal predecessors, (452), 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 17:45:58,663 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 113.0) internal successors, (452), 4 states have internal predecessors, (452), 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 17:45:58,665 INFO L186 Difference]: Start difference. First operand has 118 places, 110 transitions, 229 flow. Second operand 3 states and 317 transitions. [2021-11-13 17:45:58,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 109 transitions, 251 flow [2021-11-13 17:45:58,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 109 transitions, 248 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-11-13 17:45:58,674 INFO L242 Difference]: Finished difference. Result has 115 places, 106 transitions, 222 flow [2021-11-13 17:45:58,676 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=222, PETRI_PLACES=115, PETRI_TRANSITIONS=106} [2021-11-13 17:45:58,680 INFO L334 CegarLoopForPetriNet]: 118 programPoint places, -3 predicate places. [2021-11-13 17:45:58,680 INFO L470 AbstractCegarLoop]: Abstraction has has 115 places, 106 transitions, 222 flow [2021-11-13 17:45:58,681 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 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 17:45:58,681 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 17:45:58,681 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] [2021-11-13 17:45:58,703 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13be6ec9-592c-40cc-a961-23551b7aec56/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-13 17:45:58,900 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13be6ec9-592c-40cc-a961-23551b7aec56/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:45:58,900 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-11-13 17:45:58,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:45:58,901 INFO L85 PathProgramCache]: Analyzing trace with hash 1933690522, now seen corresponding path program 1 times [2021-11-13 17:45:58,902 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:45:58,902 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [547838621] [2021-11-13 17:45:58,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:45:58,902 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:45:58,903 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13be6ec9-592c-40cc-a961-23551b7aec56/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:45:58,904 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13be6ec9-592c-40cc-a961-23551b7aec56/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:45:58,912 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13be6ec9-592c-40cc-a961-23551b7aec56/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-13 17:45:59,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:45:59,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 17:45:59,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:45:59,391 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 17:45:59,391 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:45:59,746 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 17:45:59,746 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:45:59,747 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [547838621] [2021-11-13 17:45:59,747 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [547838621] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:45:59,747 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:45:59,747 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 7 [2021-11-13 17:45:59,748 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13790400] [2021-11-13 17:45:59,748 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:45:59,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 17:45:59,751 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:45:59,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 17:45:59,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-13 17:45:59,754 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 113 [2021-11-13 17:45:59,755 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 106 transitions, 222 flow. Second operand has 7 states, 7 states have (on average 92.57142857142857) internal successors, (648), 7 states have internal predecessors, (648), 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 17:45:59,756 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 17:45:59,756 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 113 [2021-11-13 17:45:59,756 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 17:46:00,297 INFO L129 PetriNetUnfolder]: 302/822 cut-off events. [2021-11-13 17:46:00,297 INFO L130 PetriNetUnfolder]: For 44/44 co-relation queries the response was YES. [2021-11-13 17:46:00,303 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1400 conditions, 822 events. 302/822 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 4505 event pairs, 10 based on Foata normal form. 0/805 useless extension candidates. Maximal degree in co-relation 1349. Up to 92 conditions per place. [2021-11-13 17:46:00,309 INFO L132 encePairwiseOnDemand]: 103/113 looper letters, 30 selfloop transitions, 9 changer transitions 57/183 dead transitions. [2021-11-13 17:46:00,309 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 183 transitions, 594 flow [2021-11-13 17:46:00,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-13 17:46:00,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-11-13 17:46:00,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1269 transitions. [2021-11-13 17:46:00,325 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.863852961198094 [2021-11-13 17:46:00,326 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1269 transitions. [2021-11-13 17:46:00,326 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1269 transitions. [2021-11-13 17:46:00,328 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 17:46:00,328 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1269 transitions. [2021-11-13 17:46:00,334 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 97.61538461538461) internal successors, (1269), 13 states have internal predecessors, (1269), 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 17:46:00,341 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 113.0) internal successors, (1582), 14 states have internal predecessors, (1582), 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 17:46:00,344 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 113.0) internal successors, (1582), 14 states have internal predecessors, (1582), 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 17:46:00,345 INFO L186 Difference]: Start difference. First operand has 115 places, 106 transitions, 222 flow. Second operand 13 states and 1269 transitions. [2021-11-13 17:46:00,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 183 transitions, 594 flow [2021-11-13 17:46:00,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 183 transitions, 570 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-11-13 17:46:00,354 INFO L242 Difference]: Finished difference. Result has 134 places, 111 transitions, 314 flow [2021-11-13 17:46:00,355 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=314, PETRI_PLACES=134, PETRI_TRANSITIONS=111} [2021-11-13 17:46:00,356 INFO L334 CegarLoopForPetriNet]: 118 programPoint places, 16 predicate places. [2021-11-13 17:46:00,356 INFO L470 AbstractCegarLoop]: Abstraction has has 134 places, 111 transitions, 314 flow [2021-11-13 17:46:00,358 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 92.57142857142857) internal successors, (648), 7 states have internal predecessors, (648), 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 17:46:00,358 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 17:46:00,358 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] [2021-11-13 17:46:00,381 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13be6ec9-592c-40cc-a961-23551b7aec56/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-13 17:46:00,581 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13be6ec9-592c-40cc-a961-23551b7aec56/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:46:00,582 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-11-13 17:46:00,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:46:00,583 INFO L85 PathProgramCache]: Analyzing trace with hash -1756789937, now seen corresponding path program 1 times [2021-11-13 17:46:00,583 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:46:00,584 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1462009313] [2021-11-13 17:46:00,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:46:00,584 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:46:00,584 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13be6ec9-592c-40cc-a961-23551b7aec56/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:46:00,585 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13be6ec9-592c-40cc-a961-23551b7aec56/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:46:00,588 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13be6ec9-592c-40cc-a961-23551b7aec56/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-13 17:46:00,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:46:00,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-13 17:46:00,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:46:00,990 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 17:46:00,991 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:46:01,274 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 17:46:01,275 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:46:01,275 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1462009313] [2021-11-13 17:46:01,275 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1462009313] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:46:01,276 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:46:01,276 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 11 [2021-11-13 17:46:01,276 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169599025] [2021-11-13 17:46:01,276 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:46:01,277 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-13 17:46:01,278 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:46:01,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-13 17:46:01,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-11-13 17:46:01,283 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 113 [2021-11-13 17:46:01,285 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 111 transitions, 314 flow. Second operand has 11 states, 11 states have (on average 92.18181818181819) internal successors, (1014), 11 states have internal predecessors, (1014), 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 17:46:01,285 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 17:46:01,285 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 113 [2021-11-13 17:46:01,285 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 17:46:01,727 INFO L129 PetriNetUnfolder]: 54/258 cut-off events. [2021-11-13 17:46:01,728 INFO L130 PetriNetUnfolder]: For 373/373 co-relation queries the response was YES. [2021-11-13 17:46:01,729 INFO L84 FinitePrefix]: Finished finitePrefix Result has 626 conditions, 258 events. 54/258 cut-off events. For 373/373 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 849 event pairs, 3 based on Foata normal form. 7/262 useless extension candidates. Maximal degree in co-relation 586. Up to 39 conditions per place. [2021-11-13 17:46:01,731 INFO L132 encePairwiseOnDemand]: 104/113 looper letters, 21 selfloop transitions, 12 changer transitions 31/139 dead transitions. [2021-11-13 17:46:01,731 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 139 transitions, 579 flow [2021-11-13 17:46:01,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-13 17:46:01,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-11-13 17:46:01,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1134 transitions. [2021-11-13 17:46:01,736 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8362831858407079 [2021-11-13 17:46:01,737 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1134 transitions. [2021-11-13 17:46:01,737 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1134 transitions. [2021-11-13 17:46:01,738 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 17:46:01,738 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1134 transitions. [2021-11-13 17:46:01,742 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 94.5) internal successors, (1134), 12 states have internal predecessors, (1134), 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 17:46:01,747 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 113.0) internal successors, (1469), 13 states have internal predecessors, (1469), 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 17:46:01,748 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 113.0) internal successors, (1469), 13 states have internal predecessors, (1469), 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 17:46:01,748 INFO L186 Difference]: Start difference. First operand has 134 places, 111 transitions, 314 flow. Second operand 12 states and 1134 transitions. [2021-11-13 17:46:01,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 139 transitions, 579 flow [2021-11-13 17:46:01,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 139 transitions, 493 flow, removed 38 selfloop flow, removed 7 redundant places. [2021-11-13 17:46:01,763 INFO L242 Difference]: Finished difference. Result has 136 places, 99 transitions, 300 flow [2021-11-13 17:46:01,764 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=300, PETRI_PLACES=136, PETRI_TRANSITIONS=99} [2021-11-13 17:46:01,766 INFO L334 CegarLoopForPetriNet]: 118 programPoint places, 18 predicate places. [2021-11-13 17:46:01,767 INFO L470 AbstractCegarLoop]: Abstraction has has 136 places, 99 transitions, 300 flow [2021-11-13 17:46:01,767 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 92.18181818181819) internal successors, (1014), 11 states have internal predecessors, (1014), 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 17:46:01,767 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 17:46:01,768 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] [2021-11-13 17:46:01,786 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13be6ec9-592c-40cc-a961-23551b7aec56/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-13 17:46:01,982 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13be6ec9-592c-40cc-a961-23551b7aec56/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:46:01,982 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-11-13 17:46:01,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:46:01,983 INFO L85 PathProgramCache]: Analyzing trace with hash 1521660593, now seen corresponding path program 1 times [2021-11-13 17:46:01,983 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:46:01,984 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1700945276] [2021-11-13 17:46:01,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:46:01,984 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:46:01,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13be6ec9-592c-40cc-a961-23551b7aec56/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:46:01,986 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13be6ec9-592c-40cc-a961-23551b7aec56/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:46:02,029 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13be6ec9-592c-40cc-a961-23551b7aec56/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-13 17:46:02,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:46:02,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 17:46:02,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:46:02,397 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 17:46:02,397 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:46:02,633 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 17:46:02,634 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:46:02,634 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1700945276] [2021-11-13 17:46:02,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1700945276] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:46:02,634 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:46:02,635 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-11-13 17:46:02,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884301654] [2021-11-13 17:46:02,635 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:46:02,636 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-13 17:46:02,636 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:46:02,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-13 17:46:02,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-13 17:46:02,638 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 113 [2021-11-13 17:46:02,639 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 99 transitions, 300 flow. Second operand has 10 states, 10 states have (on average 94.5) internal successors, (945), 10 states have internal predecessors, (945), 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 17:46:02,640 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 17:46:02,640 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 113 [2021-11-13 17:46:02,640 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 17:46:02,822 INFO L129 PetriNetUnfolder]: 33/248 cut-off events. [2021-11-13 17:46:02,822 INFO L130 PetriNetUnfolder]: For 155/162 co-relation queries the response was YES. [2021-11-13 17:46:02,824 INFO L84 FinitePrefix]: Finished finitePrefix Result has 500 conditions, 248 events. 33/248 cut-off events. For 155/162 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 823 event pairs, 4 based on Foata normal form. 1/245 useless extension candidates. Maximal degree in co-relation 452. Up to 31 conditions per place. [2021-11-13 17:46:02,825 INFO L132 encePairwiseOnDemand]: 106/113 looper letters, 16 selfloop transitions, 3 changer transitions 10/112 dead transitions. [2021-11-13 17:46:02,825 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 112 transitions, 388 flow [2021-11-13 17:46:02,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 17:46:02,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-11-13 17:46:02,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 674 transitions. [2021-11-13 17:46:02,829 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8520859671302149 [2021-11-13 17:46:02,829 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 674 transitions. [2021-11-13 17:46:02,829 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 674 transitions. [2021-11-13 17:46:02,830 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 17:46:02,830 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 674 transitions. [2021-11-13 17:46:02,832 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 96.28571428571429) internal successors, (674), 7 states have internal predecessors, (674), 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 17:46:02,835 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 113.0) internal successors, (904), 8 states have internal predecessors, (904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:46:02,835 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 113.0) internal successors, (904), 8 states have internal predecessors, (904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:46:02,836 INFO L186 Difference]: Start difference. First operand has 136 places, 99 transitions, 300 flow. Second operand 7 states and 674 transitions. [2021-11-13 17:46:02,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 112 transitions, 388 flow [2021-11-13 17:46:02,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 112 transitions, 313 flow, removed 19 selfloop flow, removed 15 redundant places. [2021-11-13 17:46:02,842 INFO L242 Difference]: Finished difference. Result has 115 places, 99 transitions, 241 flow [2021-11-13 17:46:02,842 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=225, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=241, PETRI_PLACES=115, PETRI_TRANSITIONS=99} [2021-11-13 17:46:02,843 INFO L334 CegarLoopForPetriNet]: 118 programPoint places, -3 predicate places. [2021-11-13 17:46:02,843 INFO L470 AbstractCegarLoop]: Abstraction has has 115 places, 99 transitions, 241 flow [2021-11-13 17:46:02,844 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 94.5) internal successors, (945), 10 states have internal predecessors, (945), 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 17:46:02,844 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 17:46:02,845 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] [2021-11-13 17:46:02,862 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13be6ec9-592c-40cc-a961-23551b7aec56/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-13 17:46:03,058 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13be6ec9-592c-40cc-a961-23551b7aec56/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:46:03,059 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-11-13 17:46:03,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:46:03,060 INFO L85 PathProgramCache]: Analyzing trace with hash -450170197, now seen corresponding path program 2 times [2021-11-13 17:46:03,061 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:46:03,061 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1583824037] [2021-11-13 17:46:03,061 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-13 17:46:03,062 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:46:03,062 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13be6ec9-592c-40cc-a961-23551b7aec56/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:46:03,063 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13be6ec9-592c-40cc-a961-23551b7aec56/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:46:03,067 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13be6ec9-592c-40cc-a961-23551b7aec56/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-13 17:46:03,210 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-13 17:46:03,210 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 17:46:03,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 17:46:03,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:46:03,411 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 17:46:03,411 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:46:03,645 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 17:46:03,645 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:46:03,646 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1583824037] [2021-11-13 17:46:03,646 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1583824037] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:46:03,646 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:46:03,646 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-11-13 17:46:03,647 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894154766] [2021-11-13 17:46:03,647 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:46:03,647 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-13 17:46:03,648 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:46:03,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-13 17:46:03,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-13 17:46:03,650 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 113 [2021-11-13 17:46:03,651 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 99 transitions, 241 flow. Second operand has 10 states, 10 states have (on average 94.3) internal successors, (943), 10 states have internal predecessors, (943), 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 17:46:03,651 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 17:46:03,652 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 113 [2021-11-13 17:46:03,652 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 17:46:03,815 INFO L129 PetriNetUnfolder]: 26/215 cut-off events. [2021-11-13 17:46:03,815 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-11-13 17:46:03,816 INFO L84 FinitePrefix]: Finished finitePrefix Result has 332 conditions, 215 events. 26/215 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 643 event pairs, 0 based on Foata normal form. 1/212 useless extension candidates. Maximal degree in co-relation 321. Up to 28 conditions per place. [2021-11-13 17:46:03,817 INFO L132 encePairwiseOnDemand]: 106/113 looper letters, 15 selfloop transitions, 3 changer transitions 10/111 dead transitions. [2021-11-13 17:46:03,817 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 111 transitions, 329 flow [2021-11-13 17:46:03,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 17:46:03,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-11-13 17:46:03,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 673 transitions. [2021-11-13 17:46:03,821 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8508217446270544 [2021-11-13 17:46:03,821 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 673 transitions. [2021-11-13 17:46:03,821 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 673 transitions. [2021-11-13 17:46:03,822 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 17:46:03,822 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 673 transitions. [2021-11-13 17:46:03,824 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 96.14285714285714) internal successors, (673), 7 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:46:03,827 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 113.0) internal successors, (904), 8 states have internal predecessors, (904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:46:03,827 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 113.0) internal successors, (904), 8 states have internal predecessors, (904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:46:03,828 INFO L186 Difference]: Start difference. First operand has 115 places, 99 transitions, 241 flow. Second operand 7 states and 673 transitions. [2021-11-13 17:46:03,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 111 transitions, 329 flow [2021-11-13 17:46:03,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 111 transitions, 309 flow, removed 7 selfloop flow, removed 6 redundant places. [2021-11-13 17:46:03,832 INFO L242 Difference]: Finished difference. Result has 116 places, 99 transitions, 243 flow [2021-11-13 17:46:03,833 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=227, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=243, PETRI_PLACES=116, PETRI_TRANSITIONS=99} [2021-11-13 17:46:03,834 INFO L334 CegarLoopForPetriNet]: 118 programPoint places, -2 predicate places. [2021-11-13 17:46:03,834 INFO L470 AbstractCegarLoop]: Abstraction has has 116 places, 99 transitions, 243 flow [2021-11-13 17:46:03,835 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 94.3) internal successors, (943), 10 states have internal predecessors, (943), 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 17:46:03,835 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 17:46:03,835 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] [2021-11-13 17:46:03,855 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13be6ec9-592c-40cc-a961-23551b7aec56/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-13 17:46:04,055 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13be6ec9-592c-40cc-a961-23551b7aec56/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:46:04,056 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-11-13 17:46:04,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:46:04,056 INFO L85 PathProgramCache]: Analyzing trace with hash -1967856639, now seen corresponding path program 3 times [2021-11-13 17:46:04,057 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:46:04,057 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1987034183] [2021-11-13 17:46:04,057 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-13 17:46:04,057 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:46:04,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13be6ec9-592c-40cc-a961-23551b7aec56/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:46:04,058 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13be6ec9-592c-40cc-a961-23551b7aec56/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:46:04,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13be6ec9-592c-40cc-a961-23551b7aec56/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-13 17:46:04,225 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-11-13 17:46:04,225 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 17:46:04,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-13 17:46:04,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:46:04,870 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 17:46:04,870 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:46:06,264 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 17:46:06,264 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:46:06,264 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1987034183] [2021-11-13 17:46:06,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1987034183] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:46:06,265 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:46:06,265 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 11] imperfect sequences [] total 16 [2021-11-13 17:46:06,265 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556551729] [2021-11-13 17:46:06,265 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:46:06,266 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-13 17:46:06,266 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:46:06,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-13 17:46:06,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2021-11-13 17:46:06,269 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 113 [2021-11-13 17:46:06,271 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 99 transitions, 243 flow. Second operand has 16 states, 16 states have (on average 86.9375) internal successors, (1391), 16 states have internal predecessors, (1391), 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 17:46:06,272 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 17:46:06,272 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 113 [2021-11-13 17:46:06,272 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 17:46:06,508 INFO L129 PetriNetUnfolder]: 12/158 cut-off events. [2021-11-13 17:46:06,508 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-11-13 17:46:06,509 INFO L84 FinitePrefix]: Finished finitePrefix Result has 245 conditions, 158 events. 12/158 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 311 event pairs, 0 based on Foata normal form. 1/157 useless extension candidates. Maximal degree in co-relation 234. Up to 14 conditions per place. [2021-11-13 17:46:06,510 INFO L132 encePairwiseOnDemand]: 104/113 looper letters, 19 selfloop transitions, 5 changer transitions 6/106 dead transitions. [2021-11-13 17:46:06,510 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 106 transitions, 323 flow [2021-11-13 17:46:06,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-13 17:46:06,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-11-13 17:46:06,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 796 transitions. [2021-11-13 17:46:06,514 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7826941986234022 [2021-11-13 17:46:06,514 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 796 transitions. [2021-11-13 17:46:06,514 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 796 transitions. [2021-11-13 17:46:06,515 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 17:46:06,515 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 796 transitions. [2021-11-13 17:46:06,518 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 88.44444444444444) internal successors, (796), 9 states have internal predecessors, (796), 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 17:46:06,521 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 113.0) internal successors, (1130), 10 states have internal predecessors, (1130), 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 17:46:06,522 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 113.0) internal successors, (1130), 10 states have internal predecessors, (1130), 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 17:46:06,522 INFO L186 Difference]: Start difference. First operand has 116 places, 99 transitions, 243 flow. Second operand 9 states and 796 transitions. [2021-11-13 17:46:06,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 106 transitions, 323 flow [2021-11-13 17:46:06,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 106 transitions, 303 flow, removed 7 selfloop flow, removed 6 redundant places. [2021-11-13 17:46:06,526 INFO L242 Difference]: Finished difference. Result has 119 places, 99 transitions, 249 flow [2021-11-13 17:46:06,527 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=229, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=249, PETRI_PLACES=119, PETRI_TRANSITIONS=99} [2021-11-13 17:46:06,528 INFO L334 CegarLoopForPetriNet]: 118 programPoint places, 1 predicate places. [2021-11-13 17:46:06,528 INFO L470 AbstractCegarLoop]: Abstraction has has 119 places, 99 transitions, 249 flow [2021-11-13 17:46:06,529 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 86.9375) internal successors, (1391), 16 states have internal predecessors, (1391), 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 17:46:06,529 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 17:46:06,529 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] [2021-11-13 17:46:06,540 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13be6ec9-592c-40cc-a961-23551b7aec56/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-13 17:46:06,735 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13be6ec9-592c-40cc-a961-23551b7aec56/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:46:06,736 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 3 more)] === [2021-11-13 17:46:06,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:46:06,736 INFO L85 PathProgramCache]: Analyzing trace with hash 1567370781, now seen corresponding path program 4 times [2021-11-13 17:46:06,737 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:46:06,737 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1159358448] [2021-11-13 17:46:06,737 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-13 17:46:06,738 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:46:06,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13be6ec9-592c-40cc-a961-23551b7aec56/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:46:06,750 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13be6ec9-592c-40cc-a961-23551b7aec56/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:46:06,785 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13be6ec9-592c-40cc-a961-23551b7aec56/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-13 17:46:06,974 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-13 17:46:06,974 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2021-11-13 17:46:06,974 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-13 17:46:07,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 17:46:07,295 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-11-13 17:46:07,295 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-13 17:46:07,296 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2021-11-13 17:46:07,298 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2021-11-13 17:46:07,299 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION (3 of 6 remaining) [2021-11-13 17:46:07,299 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATION (2 of 6 remaining) [2021-11-13 17:46:07,299 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATION (1 of 6 remaining) [2021-11-13 17:46:07,300 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2021-11-13 17:46:07,319 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13be6ec9-592c-40cc-a961-23551b7aec56/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-13 17:46:07,515 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13be6ec9-592c-40cc-a961-23551b7aec56/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:46:07,519 INFO L732 BasicCegarLoop]: Path program histogram: [4, 1, 1, 1] [2021-11-13 17:46:07,525 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-11-13 17:46:07,525 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-13 17:46:07,624 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.computeCurrectProc(InlinerBacktranslator.java:230) at de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.translateProgramExecution(InlinerBacktranslator.java:203) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:216) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:206) at de.uni_freiburg.informatik.ultimate.core.lib.results.CounterExampleResult.getProgramExecutionAsString(CounterExampleResult.java:155) at de.uni_freiburg.informatik.ultimate.core.lib.results.CounterExampleResult.getLongDescription(CounterExampleResult.java:134) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:86) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResultReporter.reportResult(CegarLoopResultReporter.java:141) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.reportLocationResults(TraceAbstractionStarter.java:586) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:181) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-13 17:46:07,627 INFO L158 Benchmark]: Toolchain (without parser) took 12468.46ms. Allocated memory was 58.7MB in the beginning and 113.2MB in the end (delta: 54.5MB). Free memory was 37.2MB in the beginning and 53.3MB in the end (delta: -16.2MB). Peak memory consumption was 37.2MB. Max. memory is 16.1GB. [2021-11-13 17:46:07,627 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 58.7MB. Free memory is still 40.1MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 17:46:07,628 INFO L158 Benchmark]: CACSL2BoogieTranslator took 797.55ms. Allocated memory is still 58.7MB. Free memory was 36.9MB in the beginning and 28.4MB in the end (delta: 8.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-13 17:46:07,629 INFO L158 Benchmark]: Boogie Procedure Inliner took 125.59ms. Allocated memory was 58.7MB in the beginning and 71.3MB in the end (delta: 12.6MB). Free memory was 28.2MB in the beginning and 53.0MB in the end (delta: -24.8MB). Peak memory consumption was 5.9MB. Max. memory is 16.1GB. [2021-11-13 17:46:07,629 INFO L158 Benchmark]: Boogie Preprocessor took 87.29ms. Allocated memory is still 71.3MB. Free memory was 53.0MB in the beginning and 50.6MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-13 17:46:07,630 INFO L158 Benchmark]: RCFGBuilder took 1206.32ms. Allocated memory is still 71.3MB. Free memory was 50.3MB in the beginning and 31.7MB in the end (delta: 18.7MB). Peak memory consumption was 27.1MB. Max. memory is 16.1GB. [2021-11-13 17:46:07,631 INFO L158 Benchmark]: TraceAbstraction took 10245.42ms. Allocated memory was 71.3MB in the beginning and 113.2MB in the end (delta: 41.9MB). Free memory was 31.3MB in the beginning and 53.3MB in the end (delta: -22.0MB). Peak memory consumption was 19.6MB. Max. memory is 16.1GB. [2021-11-13 17:46:07,633 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 58.7MB. Free memory is still 40.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 797.55ms. Allocated memory is still 58.7MB. Free memory was 36.9MB in the beginning and 28.4MB in the end (delta: 8.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 125.59ms. Allocated memory was 58.7MB in the beginning and 71.3MB in the end (delta: 12.6MB). Free memory was 28.2MB in the beginning and 53.0MB in the end (delta: -24.8MB). Peak memory consumption was 5.9MB. Max. memory is 16.1GB. * Boogie Preprocessor took 87.29ms. Allocated memory is still 71.3MB. Free memory was 53.0MB in the beginning and 50.6MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1206.32ms. Allocated memory is still 71.3MB. Free memory was 50.3MB in the beginning and 31.7MB in the end (delta: 18.7MB). Peak memory consumption was 27.1MB. Max. memory is 16.1GB. * TraceAbstraction took 10245.42ms. Allocated memory was 71.3MB in the beginning and 113.2MB in the end (delta: 41.9MB). Free memory was 31.3MB in the beginning and 53.3MB in the end (delta: -22.0MB). Peak memory consumption was 19.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.computeCurrectProc(InlinerBacktranslator.java:230) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-13 17:46:07,694 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13be6ec9-592c-40cc-a961-23551b7aec56/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: NullPointerException: null