./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/parallel-ticket-3.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54069bd2-eaf4-4c05-9c4f-6ec5ca88545c/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54069bd2-eaf4-4c05-9c4f-6ec5ca88545c/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54069bd2-eaf4-4c05-9c4f-6ec5ca88545c/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54069bd2-eaf4-4c05-9c4f-6ec5ca88545c/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-ticket-3.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54069bd2-eaf4-4c05-9c4f-6ec5ca88545c/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54069bd2-eaf4-4c05-9c4f-6ec5ca88545c/bin/uautomizer-ug76WZFUDN --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 c947ca303cec71cbb6edeb9f866ed53067014e89778e5c242eb251405d7ab484 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 09:27:08,043 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 09:27:08,045 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 09:27:08,092 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 09:27:08,093 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 09:27:08,094 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 09:27:08,096 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 09:27:08,098 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 09:27:08,100 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 09:27:08,101 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 09:27:08,102 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 09:27:08,104 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 09:27:08,104 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 09:27:08,106 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 09:27:08,107 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 09:27:08,109 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 09:27:08,110 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 09:27:08,111 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 09:27:08,113 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 09:27:08,115 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 09:27:08,130 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 09:27:08,131 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 09:27:08,133 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 09:27:08,134 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 09:27:08,137 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 09:27:08,138 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 09:27:08,138 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 09:27:08,139 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 09:27:08,140 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 09:27:08,141 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 09:27:08,142 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 09:27:08,143 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 09:27:08,144 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 09:27:08,145 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 09:27:08,146 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 09:27:08,147 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 09:27:08,148 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 09:27:08,148 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 09:27:08,148 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 09:27:08,149 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 09:27:08,150 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 09:27:08,151 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54069bd2-eaf4-4c05-9c4f-6ec5ca88545c/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-20 09:27:08,172 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 09:27:08,172 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 09:27:08,173 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 09:27:08,173 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 09:27:08,174 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 09:27:08,174 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 09:27:08,175 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 09:27:08,175 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 09:27:08,176 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 09:27:08,176 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 09:27:08,176 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 09:27:08,177 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 09:27:08,177 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 09:27:08,177 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 09:27:08,177 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 09:27:08,178 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 09:27:08,178 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 09:27:08,178 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 09:27:08,179 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 09:27:08,179 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 09:27:08,179 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 09:27:08,179 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 09:27:08,180 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 09:27:08,180 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 09:27:08,180 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 09:27:08,180 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 09:27:08,181 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 09:27:08,181 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 09:27:08,181 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 09:27:08,181 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 09:27:08,181 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 09:27:08,182 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 09:27:08,182 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 09:27:08,182 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_54069bd2-eaf4-4c05-9c4f-6ec5ca88545c/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54069bd2-eaf4-4c05-9c4f-6ec5ca88545c/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c947ca303cec71cbb6edeb9f866ed53067014e89778e5c242eb251405d7ab484 [2022-11-20 09:27:08,431 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 09:27:08,526 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 09:27:08,528 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 09:27:08,529 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 09:27:08,530 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 09:27:08,532 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54069bd2-eaf4-4c05-9c4f-6ec5ca88545c/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/weaver/parallel-ticket-3.wvr.c [2022-11-20 09:27:11,586 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 09:27:11,832 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 09:27:11,833 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54069bd2-eaf4-4c05-9c4f-6ec5ca88545c/sv-benchmarks/c/weaver/parallel-ticket-3.wvr.c [2022-11-20 09:27:11,840 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54069bd2-eaf4-4c05-9c4f-6ec5ca88545c/bin/uautomizer-ug76WZFUDN/data/0a397b35b/2fcf5fdf0acb43f2a0602de5bb0ff356/FLAGfa80829fe [2022-11-20 09:27:11,855 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54069bd2-eaf4-4c05-9c4f-6ec5ca88545c/bin/uautomizer-ug76WZFUDN/data/0a397b35b/2fcf5fdf0acb43f2a0602de5bb0ff356 [2022-11-20 09:27:11,861 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 09:27:11,866 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 09:27:11,868 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 09:27:11,869 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 09:27:11,873 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 09:27:11,874 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:27:11" (1/1) ... [2022-11-20 09:27:11,875 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@711c003e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:11, skipping insertion in model container [2022-11-20 09:27:11,876 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:27:11" (1/1) ... [2022-11-20 09:27:11,883 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 09:27:11,908 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 09:27:12,076 WARN L237 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_54069bd2-eaf4-4c05-9c4f-6ec5ca88545c/sv-benchmarks/c/weaver/parallel-ticket-3.wvr.c[3089,3102] [2022-11-20 09:27:12,081 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 09:27:12,092 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 09:27:12,117 WARN L237 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_54069bd2-eaf4-4c05-9c4f-6ec5ca88545c/sv-benchmarks/c/weaver/parallel-ticket-3.wvr.c[3089,3102] [2022-11-20 09:27:12,119 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 09:27:12,134 INFO L208 MainTranslator]: Completed translation [2022-11-20 09:27:12,134 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:12 WrapperNode [2022-11-20 09:27:12,135 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 09:27:12,136 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 09:27:12,136 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 09:27:12,136 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 09:27:12,144 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:12" (1/1) ... [2022-11-20 09:27:12,152 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:12" (1/1) ... [2022-11-20 09:27:12,176 INFO L138 Inliner]: procedures = 22, calls = 55, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 158 [2022-11-20 09:27:12,176 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 09:27:12,177 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 09:27:12,177 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 09:27:12,177 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 09:27:12,188 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:12" (1/1) ... [2022-11-20 09:27:12,188 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:12" (1/1) ... [2022-11-20 09:27:12,191 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:12" (1/1) ... [2022-11-20 09:27:12,192 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:12" (1/1) ... [2022-11-20 09:27:12,196 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:12" (1/1) ... [2022-11-20 09:27:12,199 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:12" (1/1) ... [2022-11-20 09:27:12,200 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:12" (1/1) ... [2022-11-20 09:27:12,202 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:12" (1/1) ... [2022-11-20 09:27:12,204 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 09:27:12,205 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 09:27:12,205 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 09:27:12,205 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 09:27:12,206 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:12" (1/1) ... [2022-11-20 09:27:12,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 09:27:12,234 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54069bd2-eaf4-4c05-9c4f-6ec5ca88545c/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:27:12,253 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54069bd2-eaf4-4c05-9c4f-6ec5ca88545c/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 09:27:12,276 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54069bd2-eaf4-4c05-9c4f-6ec5ca88545c/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 09:27:12,301 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 09:27:12,302 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-20 09:27:12,302 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-20 09:27:12,302 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-20 09:27:12,302 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-20 09:27:12,302 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-20 09:27:12,302 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-20 09:27:12,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 09:27:12,303 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 09:27:12,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 09:27:12,303 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-20 09:27:12,303 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-20 09:27:12,303 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 09:27:12,304 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 09:27:12,304 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 09:27:12,304 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 09:27:12,305 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 09:27:12,404 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 09:27:12,406 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 09:27:12,694 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 09:27:12,850 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 09:27:12,850 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-20 09:27:12,854 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:27:12 BoogieIcfgContainer [2022-11-20 09:27:12,854 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 09:27:12,857 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 09:27:12,857 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 09:27:12,860 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 09:27:12,861 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 09:27:11" (1/3) ... [2022-11-20 09:27:12,861 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bfda007 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:27:12, skipping insertion in model container [2022-11-20 09:27:12,862 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:12" (2/3) ... [2022-11-20 09:27:12,862 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bfda007 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:27:12, skipping insertion in model container [2022-11-20 09:27:12,862 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:27:12" (3/3) ... [2022-11-20 09:27:12,864 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-ticket-3.wvr.c [2022-11-20 09:27:12,888 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 09:27:12,901 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 09:27:12,901 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 09:27:12,901 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 09:27:13,041 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-20 09:27:13,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 127 places, 119 transitions, 262 flow [2022-11-20 09:27:13,177 INFO L130 PetriNetUnfolder]: 2/116 cut-off events. [2022-11-20 09:27:13,177 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-20 09:27:13,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129 conditions, 116 events. 2/116 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 39 event pairs, 0 based on Foata normal form. 0/113 useless extension candidates. Maximal degree in co-relation 82. Up to 2 conditions per place. [2022-11-20 09:27:13,182 INFO L82 GeneralOperation]: Start removeDead. Operand has 127 places, 119 transitions, 262 flow [2022-11-20 09:27:13,187 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 113 places, 105 transitions, 228 flow [2022-11-20 09:27:13,198 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 09:27:13,205 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5656897f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 09:27:13,205 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-20 09:27:13,249 INFO L130 PetriNetUnfolder]: 2/104 cut-off events. [2022-11-20 09:27:13,257 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-20 09:27:13,258 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:27:13,259 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:27:13,259 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 09:27:13,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:13,271 INFO L85 PathProgramCache]: Analyzing trace with hash -38046997, now seen corresponding path program 1 times [2022-11-20 09:27:13,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:13,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055568288] [2022-11-20 09:27:13,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:13,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:13,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:15,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:27:15,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:15,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055568288] [2022-11-20 09:27:15,048 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055568288] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:15,049 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:27:15,049 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 09:27:15,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21657997] [2022-11-20 09:27:15,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:15,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 09:27:15,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:15,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 09:27:15,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-11-20 09:27:15,113 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 119 [2022-11-20 09:27:15,117 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 105 transitions, 228 flow. Second operand has 10 states, 10 states have (on average 86.1) internal successors, (861), 10 states have internal predecessors, (861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:15,118 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:27:15,118 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 119 [2022-11-20 09:27:15,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:27:15,930 INFO L130 PetriNetUnfolder]: 397/974 cut-off events. [2022-11-20 09:27:15,930 INFO L131 PetriNetUnfolder]: For 202/202 co-relation queries the response was YES. [2022-11-20 09:27:15,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1826 conditions, 974 events. 397/974 cut-off events. For 202/202 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 5231 event pairs, 221 based on Foata normal form. 3/943 useless extension candidates. Maximal degree in co-relation 1373. Up to 311 conditions per place. [2022-11-20 09:27:15,946 INFO L137 encePairwiseOnDemand]: 103/119 looper letters, 47 selfloop transitions, 11 changer transitions 22/150 dead transitions. [2022-11-20 09:27:15,947 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 150 transitions, 502 flow [2022-11-20 09:27:15,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 09:27:15,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-20 09:27:15,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1080 transitions. [2022-11-20 09:27:15,972 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7563025210084033 [2022-11-20 09:27:15,975 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1080 transitions. [2022-11-20 09:27:15,976 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1080 transitions. [2022-11-20 09:27:15,981 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:27:15,984 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1080 transitions. [2022-11-20 09:27:15,992 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 90.0) internal successors, (1080), 12 states have internal predecessors, (1080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:16,002 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 119.0) internal successors, (1547), 13 states have internal predecessors, (1547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:16,003 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 119.0) internal successors, (1547), 13 states have internal predecessors, (1547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:16,005 INFO L175 Difference]: Start difference. First operand has 113 places, 105 transitions, 228 flow. Second operand 12 states and 1080 transitions. [2022-11-20 09:27:16,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 150 transitions, 502 flow [2022-11-20 09:27:16,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 150 transitions, 474 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-20 09:27:16,022 INFO L231 Difference]: Finished difference. Result has 122 places, 106 transitions, 257 flow [2022-11-20 09:27:16,024 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=257, PETRI_PLACES=122, PETRI_TRANSITIONS=106} [2022-11-20 09:27:16,031 INFO L288 CegarLoopForPetriNet]: 113 programPoint places, 9 predicate places. [2022-11-20 09:27:16,031 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 106 transitions, 257 flow [2022-11-20 09:27:16,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 86.1) internal successors, (861), 10 states have internal predecessors, (861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:16,032 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:27:16,033 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:27:16,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 09:27:16,034 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 09:27:16,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:16,036 INFO L85 PathProgramCache]: Analyzing trace with hash 1268579903, now seen corresponding path program 2 times [2022-11-20 09:27:16,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:16,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971124642] [2022-11-20 09:27:16,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:16,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:16,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:16,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:27:16,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:16,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971124642] [2022-11-20 09:27:16,829 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971124642] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:16,830 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:27:16,832 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 09:27:16,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583517352] [2022-11-20 09:27:16,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:16,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 09:27:16,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:16,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 09:27:16,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-20 09:27:16,839 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 119 [2022-11-20 09:27:16,840 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 106 transitions, 257 flow. Second operand has 10 states, 10 states have (on average 86.1) internal successors, (861), 10 states have internal predecessors, (861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:16,846 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:27:16,846 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 119 [2022-11-20 09:27:16,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:27:17,362 INFO L130 PetriNetUnfolder]: 355/957 cut-off events. [2022-11-20 09:27:17,363 INFO L131 PetriNetUnfolder]: For 175/175 co-relation queries the response was YES. [2022-11-20 09:27:17,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1809 conditions, 957 events. 355/957 cut-off events. For 175/175 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 5558 event pairs, 117 based on Foata normal form. 1/928 useless extension candidates. Maximal degree in co-relation 1797. Up to 308 conditions per place. [2022-11-20 09:27:17,369 INFO L137 encePairwiseOnDemand]: 108/119 looper letters, 36 selfloop transitions, 9 changer transitions 27/142 dead transitions. [2022-11-20 09:27:17,370 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 142 transitions, 499 flow [2022-11-20 09:27:17,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 09:27:17,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-20 09:27:17,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 899 transitions. [2022-11-20 09:27:17,373 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7554621848739496 [2022-11-20 09:27:17,373 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 899 transitions. [2022-11-20 09:27:17,373 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 899 transitions. [2022-11-20 09:27:17,374 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:27:17,374 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 899 transitions. [2022-11-20 09:27:17,376 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 89.9) internal successors, (899), 10 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:17,379 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 119.0) internal successors, (1309), 11 states have internal predecessors, (1309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:17,381 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 119.0) internal successors, (1309), 11 states have internal predecessors, (1309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:17,381 INFO L175 Difference]: Start difference. First operand has 122 places, 106 transitions, 257 flow. Second operand 10 states and 899 transitions. [2022-11-20 09:27:17,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 142 transitions, 499 flow [2022-11-20 09:27:17,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 142 transitions, 485 flow, removed 5 selfloop flow, removed 5 redundant places. [2022-11-20 09:27:17,389 INFO L231 Difference]: Finished difference. Result has 124 places, 108 transitions, 294 flow [2022-11-20 09:27:17,389 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=247, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=294, PETRI_PLACES=124, PETRI_TRANSITIONS=108} [2022-11-20 09:27:17,390 INFO L288 CegarLoopForPetriNet]: 113 programPoint places, 11 predicate places. [2022-11-20 09:27:17,390 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 108 transitions, 294 flow [2022-11-20 09:27:17,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 86.1) internal successors, (861), 10 states have internal predecessors, (861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:17,391 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:27:17,392 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:27:17,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 09:27:17,392 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 09:27:17,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:17,396 INFO L85 PathProgramCache]: Analyzing trace with hash 1233677069, now seen corresponding path program 3 times [2022-11-20 09:27:17,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:17,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809367659] [2022-11-20 09:27:17,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:17,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:17,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:17,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:27:17,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:17,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809367659] [2022-11-20 09:27:17,738 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809367659] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:17,739 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:27:17,739 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 09:27:17,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589075616] [2022-11-20 09:27:17,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:17,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 09:27:17,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:17,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 09:27:17,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-20 09:27:17,745 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 119 [2022-11-20 09:27:17,746 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 108 transitions, 294 flow. Second operand has 8 states, 8 states have (on average 88.625) internal successors, (709), 8 states have internal predecessors, (709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:17,746 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:27:17,746 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 119 [2022-11-20 09:27:17,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:27:17,988 INFO L130 PetriNetUnfolder]: 164/549 cut-off events. [2022-11-20 09:27:17,989 INFO L131 PetriNetUnfolder]: For 159/160 co-relation queries the response was YES. [2022-11-20 09:27:17,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1093 conditions, 549 events. 164/549 cut-off events. For 159/160 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2706 event pairs, 19 based on Foata normal form. 5/531 useless extension candidates. Maximal degree in co-relation 1073. Up to 124 conditions per place. [2022-11-20 09:27:17,993 INFO L137 encePairwiseOnDemand]: 109/119 looper letters, 42 selfloop transitions, 21 changer transitions 0/142 dead transitions. [2022-11-20 09:27:17,993 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 142 transitions, 503 flow [2022-11-20 09:27:17,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 09:27:17,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-20 09:27:17,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 744 transitions. [2022-11-20 09:27:17,997 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7815126050420168 [2022-11-20 09:27:17,997 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 744 transitions. [2022-11-20 09:27:17,998 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 744 transitions. [2022-11-20 09:27:17,998 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:27:17,998 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 744 transitions. [2022-11-20 09:27:18,001 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 93.0) internal successors, (744), 8 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:18,003 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 119.0) internal successors, (1071), 9 states have internal predecessors, (1071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:18,003 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 119.0) internal successors, (1071), 9 states have internal predecessors, (1071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:18,003 INFO L175 Difference]: Start difference. First operand has 124 places, 108 transitions, 294 flow. Second operand 8 states and 744 transitions. [2022-11-20 09:27:18,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 142 transitions, 503 flow [2022-11-20 09:27:18,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 142 transitions, 474 flow, removed 8 selfloop flow, removed 8 redundant places. [2022-11-20 09:27:18,009 INFO L231 Difference]: Finished difference. Result has 120 places, 122 transitions, 350 flow [2022-11-20 09:27:18,010 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=271, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=350, PETRI_PLACES=120, PETRI_TRANSITIONS=122} [2022-11-20 09:27:18,011 INFO L288 CegarLoopForPetriNet]: 113 programPoint places, 7 predicate places. [2022-11-20 09:27:18,011 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 122 transitions, 350 flow [2022-11-20 09:27:18,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 88.625) internal successors, (709), 8 states have internal predecessors, (709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:18,012 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:27:18,012 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:27:18,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 09:27:18,012 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 09:27:18,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:18,013 INFO L85 PathProgramCache]: Analyzing trace with hash 2138049579, now seen corresponding path program 4 times [2022-11-20 09:27:18,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:18,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216264604] [2022-11-20 09:27:18,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:18,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:18,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:18,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:27:18,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:18,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216264604] [2022-11-20 09:27:18,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216264604] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:18,315 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:27:18,315 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 09:27:18,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245301949] [2022-11-20 09:27:18,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:18,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 09:27:18,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:18,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 09:27:18,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-11-20 09:27:18,324 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 119 [2022-11-20 09:27:18,324 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 122 transitions, 350 flow. Second operand has 7 states, 7 states have (on average 89.14285714285714) internal successors, (624), 7 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:18,325 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:27:18,325 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 119 [2022-11-20 09:27:18,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:27:18,557 INFO L130 PetriNetUnfolder]: 174/682 cut-off events. [2022-11-20 09:27:18,558 INFO L131 PetriNetUnfolder]: For 250/268 co-relation queries the response was YES. [2022-11-20 09:27:18,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1435 conditions, 682 events. 174/682 cut-off events. For 250/268 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 3908 event pairs, 47 based on Foata normal form. 24/680 useless extension candidates. Maximal degree in co-relation 721. Up to 120 conditions per place. [2022-11-20 09:27:18,563 INFO L137 encePairwiseOnDemand]: 109/119 looper letters, 46 selfloop transitions, 23 changer transitions 0/148 dead transitions. [2022-11-20 09:27:18,563 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 148 transitions, 576 flow [2022-11-20 09:27:18,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 09:27:18,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 09:27:18,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 653 transitions. [2022-11-20 09:27:18,566 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7839135654261705 [2022-11-20 09:27:18,566 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 653 transitions. [2022-11-20 09:27:18,567 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 653 transitions. [2022-11-20 09:27:18,571 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:27:18,571 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 653 transitions. [2022-11-20 09:27:18,575 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 93.28571428571429) internal successors, (653), 7 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:18,577 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 119.0) internal successors, (952), 8 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:18,577 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 119.0) internal successors, (952), 8 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:18,577 INFO L175 Difference]: Start difference. First operand has 120 places, 122 transitions, 350 flow. Second operand 7 states and 653 transitions. [2022-11-20 09:27:18,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 148 transitions, 576 flow [2022-11-20 09:27:18,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 148 transitions, 568 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 09:27:18,586 INFO L231 Difference]: Finished difference. Result has 125 places, 133 transitions, 471 flow [2022-11-20 09:27:18,587 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=471, PETRI_PLACES=125, PETRI_TRANSITIONS=133} [2022-11-20 09:27:18,589 INFO L288 CegarLoopForPetriNet]: 113 programPoint places, 12 predicate places. [2022-11-20 09:27:18,589 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 133 transitions, 471 flow [2022-11-20 09:27:18,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 89.14285714285714) internal successors, (624), 7 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:18,589 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:27:18,590 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:27:18,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 09:27:18,590 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 09:27:18,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:18,591 INFO L85 PathProgramCache]: Analyzing trace with hash 1741121809, now seen corresponding path program 5 times [2022-11-20 09:27:18,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:18,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799105923] [2022-11-20 09:27:18,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:18,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:18,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:18,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:27:18,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:18,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799105923] [2022-11-20 09:27:18,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799105923] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:18,865 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:27:18,865 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 09:27:18,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361399665] [2022-11-20 09:27:18,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:18,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 09:27:18,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:18,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 09:27:18,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-11-20 09:27:18,868 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 119 [2022-11-20 09:27:18,868 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 133 transitions, 471 flow. Second operand has 7 states, 7 states have (on average 89.14285714285714) internal successors, (624), 7 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:18,869 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:27:18,869 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 119 [2022-11-20 09:27:18,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:27:19,090 INFO L130 PetriNetUnfolder]: 149/625 cut-off events. [2022-11-20 09:27:19,090 INFO L131 PetriNetUnfolder]: For 622/655 co-relation queries the response was YES. [2022-11-20 09:27:19,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1545 conditions, 625 events. 149/625 cut-off events. For 622/655 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 3507 event pairs, 48 based on Foata normal form. 34/633 useless extension candidates. Maximal degree in co-relation 759. Up to 111 conditions per place. [2022-11-20 09:27:19,096 INFO L137 encePairwiseOnDemand]: 109/119 looper letters, 44 selfloop transitions, 24 changer transitions 4/151 dead transitions. [2022-11-20 09:27:19,096 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 151 transitions, 688 flow [2022-11-20 09:27:19,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 09:27:19,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 09:27:19,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 654 transitions. [2022-11-20 09:27:19,098 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7851140456182473 [2022-11-20 09:27:19,099 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 654 transitions. [2022-11-20 09:27:19,099 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 654 transitions. [2022-11-20 09:27:19,099 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:27:19,099 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 654 transitions. [2022-11-20 09:27:19,101 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 93.42857142857143) internal successors, (654), 7 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:19,103 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 119.0) internal successors, (952), 8 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:19,103 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 119.0) internal successors, (952), 8 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:19,104 INFO L175 Difference]: Start difference. First operand has 125 places, 133 transitions, 471 flow. Second operand 7 states and 654 transitions. [2022-11-20 09:27:19,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 151 transitions, 688 flow [2022-11-20 09:27:19,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 151 transitions, 672 flow, removed 4 selfloop flow, removed 3 redundant places. [2022-11-20 09:27:19,111 INFO L231 Difference]: Finished difference. Result has 129 places, 134 transitions, 523 flow [2022-11-20 09:27:19,112 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=462, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=523, PETRI_PLACES=129, PETRI_TRANSITIONS=134} [2022-11-20 09:27:19,114 INFO L288 CegarLoopForPetriNet]: 113 programPoint places, 16 predicate places. [2022-11-20 09:27:19,114 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 134 transitions, 523 flow [2022-11-20 09:27:19,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 89.14285714285714) internal successors, (624), 7 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:19,115 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:27:19,115 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:27:19,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 09:27:19,116 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 09:27:19,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:19,117 INFO L85 PathProgramCache]: Analyzing trace with hash -2099504745, now seen corresponding path program 6 times [2022-11-20 09:27:19,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:19,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500517314] [2022-11-20 09:27:19,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:19,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:19,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:19,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:27:19,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:19,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500517314] [2022-11-20 09:27:19,354 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500517314] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:19,354 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:27:19,354 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 09:27:19,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037158974] [2022-11-20 09:27:19,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:19,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 09:27:19,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:19,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 09:27:19,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-11-20 09:27:19,358 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 119 [2022-11-20 09:27:19,360 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 134 transitions, 523 flow. Second operand has 7 states, 7 states have (on average 89.14285714285714) internal successors, (624), 7 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:19,360 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:27:19,360 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 119 [2022-11-20 09:27:19,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:27:19,548 INFO L130 PetriNetUnfolder]: 42/280 cut-off events. [2022-11-20 09:27:19,549 INFO L131 PetriNetUnfolder]: For 309/323 co-relation queries the response was YES. [2022-11-20 09:27:19,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 690 conditions, 280 events. 42/280 cut-off events. For 309/323 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 933 event pairs, 5 based on Foata normal form. 24/300 useless extension candidates. Maximal degree in co-relation 420. Up to 40 conditions per place. [2022-11-20 09:27:19,551 INFO L137 encePairwiseOnDemand]: 109/119 looper letters, 36 selfloop transitions, 23 changer transitions 2/135 dead transitions. [2022-11-20 09:27:19,551 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 135 transitions, 631 flow [2022-11-20 09:27:19,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 09:27:19,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 09:27:19,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 647 transitions. [2022-11-20 09:27:19,554 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7767106842737095 [2022-11-20 09:27:19,554 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 647 transitions. [2022-11-20 09:27:19,554 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 647 transitions. [2022-11-20 09:27:19,554 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:27:19,555 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 647 transitions. [2022-11-20 09:27:19,556 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 92.42857142857143) internal successors, (647), 7 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:19,558 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 119.0) internal successors, (952), 8 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:19,559 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 119.0) internal successors, (952), 8 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:19,559 INFO L175 Difference]: Start difference. First operand has 129 places, 134 transitions, 523 flow. Second operand 7 states and 647 transitions. [2022-11-20 09:27:19,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 135 transitions, 631 flow [2022-11-20 09:27:19,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 135 transitions, 582 flow, removed 1 selfloop flow, removed 9 redundant places. [2022-11-20 09:27:19,564 INFO L231 Difference]: Finished difference. Result has 127 places, 124 transitions, 469 flow [2022-11-20 09:27:19,565 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=396, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=469, PETRI_PLACES=127, PETRI_TRANSITIONS=124} [2022-11-20 09:27:19,567 INFO L288 CegarLoopForPetriNet]: 113 programPoint places, 14 predicate places. [2022-11-20 09:27:19,567 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 124 transitions, 469 flow [2022-11-20 09:27:19,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 89.14285714285714) internal successors, (624), 7 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:19,568 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:27:19,568 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:27:19,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 09:27:19,569 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 09:27:19,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:19,569 INFO L85 PathProgramCache]: Analyzing trace with hash -534133315, now seen corresponding path program 7 times [2022-11-20 09:27:19,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:19,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056691237] [2022-11-20 09:27:19,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:19,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:19,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:19,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:27:19,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:19,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056691237] [2022-11-20 09:27:19,901 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056691237] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:19,901 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:27:19,901 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 09:27:19,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965675102] [2022-11-20 09:27:19,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:19,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 09:27:19,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:19,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 09:27:19,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-20 09:27:19,904 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 119 [2022-11-20 09:27:19,904 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 124 transitions, 469 flow. Second operand has 8 states, 8 states have (on average 81.625) internal successors, (653), 8 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:19,905 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:27:19,905 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 119 [2022-11-20 09:27:19,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:27:20,196 INFO L130 PetriNetUnfolder]: 60/301 cut-off events. [2022-11-20 09:27:20,196 INFO L131 PetriNetUnfolder]: For 393/393 co-relation queries the response was YES. [2022-11-20 09:27:20,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 796 conditions, 301 events. 60/301 cut-off events. For 393/393 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 944 event pairs, 9 based on Foata normal form. 3/299 useless extension candidates. Maximal degree in co-relation 452. Up to 59 conditions per place. [2022-11-20 09:27:20,199 INFO L137 encePairwiseOnDemand]: 109/119 looper letters, 52 selfloop transitions, 23 changer transitions 4/143 dead transitions. [2022-11-20 09:27:20,200 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 143 transitions, 699 flow [2022-11-20 09:27:20,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 09:27:20,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-20 09:27:20,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 683 transitions. [2022-11-20 09:27:20,203 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.717436974789916 [2022-11-20 09:27:20,204 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 683 transitions. [2022-11-20 09:27:20,204 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 683 transitions. [2022-11-20 09:27:20,204 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:27:20,205 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 683 transitions. [2022-11-20 09:27:20,207 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 85.375) internal successors, (683), 8 states have internal predecessors, (683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:20,209 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 119.0) internal successors, (1071), 9 states have internal predecessors, (1071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:20,209 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 119.0) internal successors, (1071), 9 states have internal predecessors, (1071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:20,210 INFO L175 Difference]: Start difference. First operand has 127 places, 124 transitions, 469 flow. Second operand 8 states and 683 transitions. [2022-11-20 09:27:20,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 143 transitions, 699 flow [2022-11-20 09:27:20,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 143 transitions, 672 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 09:27:20,216 INFO L231 Difference]: Finished difference. Result has 131 places, 122 transitions, 476 flow [2022-11-20 09:27:20,217 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=442, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=476, PETRI_PLACES=131, PETRI_TRANSITIONS=122} [2022-11-20 09:27:20,218 INFO L288 CegarLoopForPetriNet]: 113 programPoint places, 18 predicate places. [2022-11-20 09:27:20,218 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 122 transitions, 476 flow [2022-11-20 09:27:20,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 81.625) internal successors, (653), 8 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:20,219 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:27:20,219 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:27:20,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 09:27:20,219 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 09:27:20,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:20,220 INFO L85 PathProgramCache]: Analyzing trace with hash -773389285, now seen corresponding path program 8 times [2022-11-20 09:27:20,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:20,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464611283] [2022-11-20 09:27:20,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:20,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:20,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:20,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:27:20,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:20,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464611283] [2022-11-20 09:27:20,552 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464611283] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:20,553 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:27:20,553 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-20 09:27:20,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573210029] [2022-11-20 09:27:20,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:20,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 09:27:20,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:20,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 09:27:20,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-20 09:27:20,556 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 119 [2022-11-20 09:27:20,557 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 122 transitions, 476 flow. Second operand has 9 states, 9 states have (on average 81.11111111111111) internal successors, (730), 9 states have internal predecessors, (730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:20,557 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:27:20,557 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 119 [2022-11-20 09:27:20,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:27:20,931 INFO L130 PetriNetUnfolder]: 54/284 cut-off events. [2022-11-20 09:27:20,931 INFO L131 PetriNetUnfolder]: For 494/494 co-relation queries the response was YES. [2022-11-20 09:27:20,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 780 conditions, 284 events. 54/284 cut-off events. For 494/494 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 849 event pairs, 4 based on Foata normal form. 3/283 useless extension candidates. Maximal degree in co-relation 533. Up to 56 conditions per place. [2022-11-20 09:27:20,938 INFO L137 encePairwiseOnDemand]: 109/119 looper letters, 50 selfloop transitions, 21 changer transitions 8/143 dead transitions. [2022-11-20 09:27:20,938 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 143 transitions, 715 flow [2022-11-20 09:27:20,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 09:27:20,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-20 09:27:20,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 840 transitions. [2022-11-20 09:27:20,942 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7058823529411765 [2022-11-20 09:27:20,942 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 840 transitions. [2022-11-20 09:27:20,942 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 840 transitions. [2022-11-20 09:27:20,943 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:27:20,943 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 840 transitions. [2022-11-20 09:27:20,946 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 84.0) internal successors, (840), 10 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:20,948 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 119.0) internal successors, (1309), 11 states have internal predecessors, (1309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:20,949 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 119.0) internal successors, (1309), 11 states have internal predecessors, (1309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:20,950 INFO L175 Difference]: Start difference. First operand has 131 places, 122 transitions, 476 flow. Second operand 10 states and 840 transitions. [2022-11-20 09:27:20,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 143 transitions, 715 flow [2022-11-20 09:27:20,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 143 transitions, 674 flow, removed 2 selfloop flow, removed 6 redundant places. [2022-11-20 09:27:20,955 INFO L231 Difference]: Finished difference. Result has 135 places, 120 transitions, 462 flow [2022-11-20 09:27:20,955 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=437, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=462, PETRI_PLACES=135, PETRI_TRANSITIONS=120} [2022-11-20 09:27:20,958 INFO L288 CegarLoopForPetriNet]: 113 programPoint places, 22 predicate places. [2022-11-20 09:27:20,959 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 120 transitions, 462 flow [2022-11-20 09:27:20,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 81.11111111111111) internal successors, (730), 9 states have internal predecessors, (730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:20,959 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:27:20,960 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:27:20,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 09:27:20,960 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 09:27:20,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:20,961 INFO L85 PathProgramCache]: Analyzing trace with hash -1998472079, now seen corresponding path program 9 times [2022-11-20 09:27:20,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:20,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630725694] [2022-11-20 09:27:20,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:20,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:21,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:21,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:27:21,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:21,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630725694] [2022-11-20 09:27:21,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630725694] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:21,361 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:27:21,361 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-20 09:27:21,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683325082] [2022-11-20 09:27:21,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:21,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 09:27:21,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:21,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 09:27:21,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-20 09:27:21,364 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 119 [2022-11-20 09:27:21,365 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 120 transitions, 462 flow. Second operand has 9 states, 9 states have (on average 81.11111111111111) internal successors, (730), 9 states have internal predecessors, (730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:21,365 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:27:21,365 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 119 [2022-11-20 09:27:21,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:27:21,655 INFO L130 PetriNetUnfolder]: 36/249 cut-off events. [2022-11-20 09:27:21,656 INFO L131 PetriNetUnfolder]: For 434/434 co-relation queries the response was YES. [2022-11-20 09:27:21,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 672 conditions, 249 events. 36/249 cut-off events. For 434/434 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 720 event pairs, 4 based on Foata normal form. 8/253 useless extension candidates. Maximal degree in co-relation 445. Up to 36 conditions per place. [2022-11-20 09:27:21,658 INFO L137 encePairwiseOnDemand]: 109/119 looper letters, 40 selfloop transitions, 12 changer transitions 23/139 dead transitions. [2022-11-20 09:27:21,658 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 139 transitions, 686 flow [2022-11-20 09:27:21,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 09:27:21,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-20 09:27:21,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 841 transitions. [2022-11-20 09:27:21,661 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7067226890756303 [2022-11-20 09:27:21,661 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 841 transitions. [2022-11-20 09:27:21,662 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 841 transitions. [2022-11-20 09:27:21,662 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:27:21,662 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 841 transitions. [2022-11-20 09:27:21,664 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 84.1) internal successors, (841), 10 states have internal predecessors, (841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:21,667 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 119.0) internal successors, (1309), 11 states have internal predecessors, (1309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:21,668 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 119.0) internal successors, (1309), 11 states have internal predecessors, (1309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:21,668 INFO L175 Difference]: Start difference. First operand has 135 places, 120 transitions, 462 flow. Second operand 10 states and 841 transitions. [2022-11-20 09:27:21,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 139 transitions, 686 flow [2022-11-20 09:27:21,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 139 transitions, 636 flow, removed 5 selfloop flow, removed 8 redundant places. [2022-11-20 09:27:21,678 INFO L231 Difference]: Finished difference. Result has 135 places, 107 transitions, 347 flow [2022-11-20 09:27:21,678 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=395, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=347, PETRI_PLACES=135, PETRI_TRANSITIONS=107} [2022-11-20 09:27:21,679 INFO L288 CegarLoopForPetriNet]: 113 programPoint places, 22 predicate places. [2022-11-20 09:27:21,680 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 107 transitions, 347 flow [2022-11-20 09:27:21,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 81.11111111111111) internal successors, (730), 9 states have internal predecessors, (730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:21,680 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:27:21,681 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:27:21,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 09:27:21,681 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 09:27:21,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:21,682 INFO L85 PathProgramCache]: Analyzing trace with hash 1610486507, now seen corresponding path program 10 times [2022-11-20 09:27:21,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:21,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577933955] [2022-11-20 09:27:21,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:21,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:21,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:22,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:27:22,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:22,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577933955] [2022-11-20 09:27:22,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577933955] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:22,014 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:27:22,014 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-20 09:27:22,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281311164] [2022-11-20 09:27:22,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:22,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 09:27:22,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:22,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 09:27:22,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-20 09:27:22,019 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 119 [2022-11-20 09:27:22,020 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 107 transitions, 347 flow. Second operand has 9 states, 9 states have (on average 81.11111111111111) internal successors, (730), 9 states have internal predecessors, (730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:22,021 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:27:22,021 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 119 [2022-11-20 09:27:22,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:27:22,189 INFO L130 PetriNetUnfolder]: 6/95 cut-off events. [2022-11-20 09:27:22,189 INFO L131 PetriNetUnfolder]: For 107/107 co-relation queries the response was YES. [2022-11-20 09:27:22,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 232 conditions, 95 events. 6/95 cut-off events. For 107/107 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 75 event pairs, 0 based on Foata normal form. 6/101 useless extension candidates. Maximal degree in co-relation 187. Up to 11 conditions per place. [2022-11-20 09:27:22,190 INFO L137 encePairwiseOnDemand]: 111/119 looper letters, 0 selfloop transitions, 0 changer transitions 87/87 dead transitions. [2022-11-20 09:27:22,190 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 87 transitions, 356 flow [2022-11-20 09:27:22,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 09:27:22,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-20 09:27:22,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 807 transitions. [2022-11-20 09:27:22,193 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6781512605042017 [2022-11-20 09:27:22,193 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 807 transitions. [2022-11-20 09:27:22,193 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 807 transitions. [2022-11-20 09:27:22,193 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:27:22,193 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 807 transitions. [2022-11-20 09:27:22,195 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 80.7) internal successors, (807), 10 states have internal predecessors, (807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:22,198 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 119.0) internal successors, (1309), 11 states have internal predecessors, (1309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:22,198 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 119.0) internal successors, (1309), 11 states have internal predecessors, (1309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:22,198 INFO L175 Difference]: Start difference. First operand has 135 places, 107 transitions, 347 flow. Second operand 10 states and 807 transitions. [2022-11-20 09:27:22,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 87 transitions, 356 flow [2022-11-20 09:27:22,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 87 transitions, 285 flow, removed 10 selfloop flow, removed 18 redundant places. [2022-11-20 09:27:22,201 INFO L231 Difference]: Finished difference. Result has 99 places, 0 transitions, 0 flow [2022-11-20 09:27:22,201 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=195, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=0, PETRI_PLACES=99, PETRI_TRANSITIONS=0} [2022-11-20 09:27:22,202 INFO L288 CegarLoopForPetriNet]: 113 programPoint places, -14 predicate places. [2022-11-20 09:27:22,202 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 0 transitions, 0 flow [2022-11-20 09:27:22,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 81.11111111111111) internal successors, (730), 9 states have internal predecessors, (730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:22,206 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-11-20 09:27:22,206 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2022-11-20 09:27:22,207 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-11-20 09:27:22,207 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2022-11-20 09:27:22,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-20 09:27:22,207 INFO L444 BasicCegarLoop]: Path program histogram: [10] [2022-11-20 09:27:22,211 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-20 09:27:22,211 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 09:27:22,217 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 09:27:22 BasicIcfg [2022-11-20 09:27:22,217 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 09:27:22,218 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 09:27:22,218 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 09:27:22,218 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 09:27:22,218 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:27:12" (3/4) ... [2022-11-20 09:27:22,222 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-20 09:27:22,228 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-11-20 09:27:22,228 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-11-20 09:27:22,228 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2022-11-20 09:27:22,233 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2022-11-20 09:27:22,233 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-20 09:27:22,234 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-20 09:27:22,234 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-20 09:27:22,281 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54069bd2-eaf4-4c05-9c4f-6ec5ca88545c/bin/uautomizer-ug76WZFUDN/witness.graphml [2022-11-20 09:27:22,281 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 09:27:22,282 INFO L158 Benchmark]: Toolchain (without parser) took 10415.91ms. Allocated memory was 161.5MB in the beginning and 239.1MB in the end (delta: 77.6MB). Free memory was 131.5MB in the beginning and 75.0MB in the end (delta: 56.5MB). Peak memory consumption was 134.0MB. Max. memory is 16.1GB. [2022-11-20 09:27:22,282 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 117.4MB. Free memory was 92.2MB in the beginning and 92.1MB in the end (delta: 78.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 09:27:22,282 INFO L158 Benchmark]: CACSL2BoogieTranslator took 267.15ms. Allocated memory is still 161.5MB. Free memory was 131.5MB in the beginning and 120.3MB in the end (delta: 11.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-20 09:27:22,283 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.78ms. Allocated memory is still 161.5MB. Free memory was 120.3MB in the beginning and 118.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 09:27:22,283 INFO L158 Benchmark]: Boogie Preprocessor took 27.19ms. Allocated memory is still 161.5MB. Free memory was 118.2MB in the beginning and 116.8MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 09:27:22,283 INFO L158 Benchmark]: RCFGBuilder took 649.62ms. Allocated memory is still 161.5MB. Free memory was 116.8MB in the beginning and 128.0MB in the end (delta: -11.2MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-11-20 09:27:22,284 INFO L158 Benchmark]: TraceAbstraction took 9360.55ms. Allocated memory was 161.5MB in the beginning and 239.1MB in the end (delta: 77.6MB). Free memory was 127.2MB in the beginning and 78.1MB in the end (delta: 49.0MB). Peak memory consumption was 129.3MB. Max. memory is 16.1GB. [2022-11-20 09:27:22,284 INFO L158 Benchmark]: Witness Printer took 63.47ms. Allocated memory is still 239.1MB. Free memory was 77.1MB in the beginning and 75.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 09:27:22,287 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 117.4MB. Free memory was 92.2MB in the beginning and 92.1MB in the end (delta: 78.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 267.15ms. Allocated memory is still 161.5MB. Free memory was 131.5MB in the beginning and 120.3MB in the end (delta: 11.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 40.78ms. Allocated memory is still 161.5MB. Free memory was 120.3MB in the beginning and 118.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 27.19ms. Allocated memory is still 161.5MB. Free memory was 118.2MB in the beginning and 116.8MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 649.62ms. Allocated memory is still 161.5MB. Free memory was 116.8MB in the beginning and 128.0MB in the end (delta: -11.2MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 9360.55ms. Allocated memory was 161.5MB in the beginning and 239.1MB in the end (delta: 77.6MB). Free memory was 127.2MB in the beginning and 78.1MB in the end (delta: 49.0MB). Peak memory consumption was 129.3MB. Max. memory is 16.1GB. * Witness Printer took 63.47ms. Allocated memory is still 239.1MB. Free memory was 77.1MB in the beginning and 75.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 124]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 143 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.1s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 9.1s, OverallIterations: 10, TraceHistogramMax: 1, PathProgramHistogramMax: 10, EmptinessCheckTime: 0.0s, AutomataDifference: 3.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 403 SdHoareTripleChecker+Valid, 1.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 403 mSDsluCounter, 502 SdHoareTripleChecker+Invalid, 1.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 332 mSDsCounter, 118 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1769 IncrementalHoareTripleChecker+Invalid, 1887 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 118 mSolverCounterUnsat, 170 mSDtfsCounter, 1769 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 117 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=523occurred in iteration=5, InterpolantAutomatonStates: 89, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 4.2s InterpolantComputationTime, 1010 NumberOfCodeBlocks, 1010 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 1000 ConstructedInterpolants, 0 QuantifiedInterpolants, 3654 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-20 09:27:22,317 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54069bd2-eaf4-4c05-9c4f-6ec5ca88545c/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE