./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/chl-poker-hand-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82347acf-d020-408d-b024-caa8494439fc/bin/uautomizer-QkZJyEgLgS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82347acf-d020-408d-b024-caa8494439fc/bin/uautomizer-QkZJyEgLgS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82347acf-d020-408d-b024-caa8494439fc/bin/uautomizer-QkZJyEgLgS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82347acf-d020-408d-b024-caa8494439fc/bin/uautomizer-QkZJyEgLgS/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-poker-hand-trans.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82347acf-d020-408d-b024-caa8494439fc/bin/uautomizer-QkZJyEgLgS/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82347acf-d020-408d-b024-caa8494439fc/bin/uautomizer-QkZJyEgLgS --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 4e4f4f4fe5f72416e0e44275f74b26f9ea6749f134c13c768c7ed2450972cbc3 --- 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-4e7fbc6 [2022-11-23 02:44:41,044 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 02:44:41,048 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 02:44:41,098 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 02:44:41,099 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 02:44:41,103 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 02:44:41,106 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 02:44:41,112 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 02:44:41,116 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 02:44:41,119 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 02:44:41,122 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 02:44:41,125 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 02:44:41,126 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 02:44:41,132 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 02:44:41,135 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 02:44:41,136 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 02:44:41,138 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 02:44:41,140 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 02:44:41,142 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 02:44:41,150 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 02:44:41,152 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 02:44:41,155 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 02:44:41,157 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 02:44:41,158 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 02:44:41,169 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 02:44:41,171 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 02:44:41,172 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 02:44:41,174 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 02:44:41,175 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 02:44:41,176 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 02:44:41,176 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 02:44:41,178 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 02:44:41,180 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 02:44:41,181 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 02:44:41,183 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 02:44:41,184 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 02:44:41,186 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 02:44:41,186 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 02:44:41,186 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 02:44:41,188 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 02:44:41,189 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 02:44:41,190 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82347acf-d020-408d-b024-caa8494439fc/bin/uautomizer-QkZJyEgLgS/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-23 02:44:41,238 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 02:44:41,238 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 02:44:41,239 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 02:44:41,239 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 02:44:41,240 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 02:44:41,241 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 02:44:41,242 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-23 02:44:41,242 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-23 02:44:41,243 INFO L138 SettingsManager]: * Use SBE=true [2022-11-23 02:44:41,243 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 02:44:41,244 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 02:44:41,245 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 02:44:41,245 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 02:44:41,246 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 02:44:41,246 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 02:44:41,246 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 02:44:41,247 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 02:44:41,247 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 02:44:41,247 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 02:44:41,248 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 02:44:41,248 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 02:44:41,249 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 02:44:41,249 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 02:44:41,249 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 02:44:41,250 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 02:44:41,250 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 02:44:41,250 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 02:44:41,251 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 02:44:41,252 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-23 02:44:41,252 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 02:44:41,253 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-23 02:44:41,253 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 02:44:41,254 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-23 02:44:41,254 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 02:44:41,254 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_82347acf-d020-408d-b024-caa8494439fc/bin/uautomizer-QkZJyEgLgS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82347acf-d020-408d-b024-caa8494439fc/bin/uautomizer-QkZJyEgLgS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4e4f4f4fe5f72416e0e44275f74b26f9ea6749f134c13c768c7ed2450972cbc3 [2022-11-23 02:44:41,683 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 02:44:41,735 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 02:44:41,740 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 02:44:41,742 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 02:44:41,742 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 02:44:41,744 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82347acf-d020-408d-b024-caa8494439fc/bin/uautomizer-QkZJyEgLgS/../../sv-benchmarks/c/weaver/chl-poker-hand-trans.wvr.c [2022-11-23 02:44:45,497 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 02:44:45,858 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 02:44:45,863 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82347acf-d020-408d-b024-caa8494439fc/sv-benchmarks/c/weaver/chl-poker-hand-trans.wvr.c [2022-11-23 02:44:45,875 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82347acf-d020-408d-b024-caa8494439fc/bin/uautomizer-QkZJyEgLgS/data/c1fda34c5/e53a4db4a08645e887d57a05616697ea/FLAGa4543f623 [2022-11-23 02:44:45,901 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82347acf-d020-408d-b024-caa8494439fc/bin/uautomizer-QkZJyEgLgS/data/c1fda34c5/e53a4db4a08645e887d57a05616697ea [2022-11-23 02:44:45,905 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 02:44:45,907 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 02:44:45,912 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 02:44:45,912 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 02:44:45,916 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 02:44:45,917 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:44:45" (1/1) ... [2022-11-23 02:44:45,918 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c94b887 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:45, skipping insertion in model container [2022-11-23 02:44:45,919 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:44:45" (1/1) ... [2022-11-23 02:44:45,928 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 02:44:45,985 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 02:44:46,507 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_82347acf-d020-408d-b024-caa8494439fc/sv-benchmarks/c/weaver/chl-poker-hand-trans.wvr.c[18874,18887] [2022-11-23 02:44:46,519 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 02:44:46,532 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 02:44:46,633 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_82347acf-d020-408d-b024-caa8494439fc/sv-benchmarks/c/weaver/chl-poker-hand-trans.wvr.c[18874,18887] [2022-11-23 02:44:46,637 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 02:44:46,653 INFO L208 MainTranslator]: Completed translation [2022-11-23 02:44:46,653 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:46 WrapperNode [2022-11-23 02:44:46,654 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 02:44:46,655 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 02:44:46,655 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 02:44:46,655 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 02:44:46,664 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:46" (1/1) ... [2022-11-23 02:44:46,697 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:46" (1/1) ... [2022-11-23 02:44:46,816 INFO L138 Inliner]: procedures = 26, calls = 454, calls flagged for inlining = 100, calls inlined = 144, statements flattened = 2314 [2022-11-23 02:44:46,817 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 02:44:46,817 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 02:44:46,818 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 02:44:46,818 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 02:44:46,830 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:46" (1/1) ... [2022-11-23 02:44:46,830 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:46" (1/1) ... [2022-11-23 02:44:46,849 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:46" (1/1) ... [2022-11-23 02:44:46,850 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:46" (1/1) ... [2022-11-23 02:44:46,913 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:46" (1/1) ... [2022-11-23 02:44:46,934 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:46" (1/1) ... [2022-11-23 02:44:46,940 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:46" (1/1) ... [2022-11-23 02:44:46,949 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:46" (1/1) ... [2022-11-23 02:44:46,963 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 02:44:46,964 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 02:44:46,965 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 02:44:46,965 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 02:44:46,966 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:46" (1/1) ... [2022-11-23 02:44:46,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 02:44:46,997 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82347acf-d020-408d-b024-caa8494439fc/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:44:47,024 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82347acf-d020-408d-b024-caa8494439fc/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 02:44:47,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82347acf-d020-408d-b024-caa8494439fc/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 02:44:47,085 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 02:44:47,086 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 02:44:47,086 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 02:44:47,086 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 02:44:47,087 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-23 02:44:47,088 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-23 02:44:47,089 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-23 02:44:47,090 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-23 02:44:47,091 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-23 02:44:47,091 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-23 02:44:47,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 02:44:47,091 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-23 02:44:47,091 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-23 02:44:47,092 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-23 02:44:47,092 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 02:44:47,092 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 02:44:47,092 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 02:44:47,096 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-23 02:44:47,534 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 02:44:47,537 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 02:44:50,680 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 02:44:53,895 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 02:44:53,896 INFO L300 CfgBuilder]: Removed 18 assume(true) statements. [2022-11-23 02:44:53,901 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:44:53 BoogieIcfgContainer [2022-11-23 02:44:53,901 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 02:44:53,905 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 02:44:53,905 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 02:44:53,909 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 02:44:53,910 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:44:45" (1/3) ... [2022-11-23 02:44:53,912 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1067cdb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:44:53, skipping insertion in model container [2022-11-23 02:44:53,913 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:46" (2/3) ... [2022-11-23 02:44:53,914 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1067cdb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:44:53, skipping insertion in model container [2022-11-23 02:44:53,914 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:44:53" (3/3) ... [2022-11-23 02:44:53,919 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-poker-hand-trans.wvr.c [2022-11-23 02:44:53,932 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-23 02:44:53,945 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 02:44:53,945 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 02:44:53,945 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-23 02:44:54,572 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-23 02:44:54,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 671 places, 740 transitions, 1504 flow [2022-11-23 02:44:55,193 INFO L130 PetriNetUnfolder]: 79/737 cut-off events. [2022-11-23 02:44:55,193 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-23 02:44:55,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 750 conditions, 737 events. 79/737 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 780 event pairs, 0 based on Foata normal form. 0/657 useless extension candidates. Maximal degree in co-relation 662. Up to 7 conditions per place. [2022-11-23 02:44:55,206 INFO L82 GeneralOperation]: Start removeDead. Operand has 671 places, 740 transitions, 1504 flow [2022-11-23 02:44:55,225 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 657 places, 726 transitions, 1470 flow [2022-11-23 02:44:55,230 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-23 02:44:55,259 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 657 places, 726 transitions, 1470 flow [2022-11-23 02:44:55,264 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 657 places, 726 transitions, 1470 flow [2022-11-23 02:44:55,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 657 places, 726 transitions, 1470 flow [2022-11-23 02:44:55,588 INFO L130 PetriNetUnfolder]: 79/726 cut-off events. [2022-11-23 02:44:55,589 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-23 02:44:55,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 739 conditions, 726 events. 79/726 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 780 event pairs, 0 based on Foata normal form. 0/647 useless extension candidates. Maximal degree in co-relation 662. Up to 7 conditions per place. [2022-11-23 02:44:55,607 INFO L119 LiptonReduction]: Number of co-enabled transitions 16638 [2022-11-23 02:47:10,780 INFO L134 LiptonReduction]: Checked pairs total: 17251 [2022-11-23 02:47:10,780 INFO L136 LiptonReduction]: Total number of compositions: 860 [2022-11-23 02:47:10,805 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 02:47:10,814 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;@1a142857, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 02:47:10,815 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-23 02:47:10,905 INFO L130 PetriNetUnfolder]: 24/57 cut-off events. [2022-11-23 02:47:10,905 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-23 02:47:10,906 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:47:10,906 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] [2022-11-23 02:47:10,907 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)] === [2022-11-23 02:47:10,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:47:10,913 INFO L85 PathProgramCache]: Analyzing trace with hash -1688456514, now seen corresponding path program 1 times [2022-11-23 02:47:10,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:47:10,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423553710] [2022-11-23 02:47:10,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:47:10,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:47:11,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:47:12,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:47:12,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:47:12,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423553710] [2022-11-23 02:47:12,058 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423553710] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:47:12,059 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:47:12,059 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 02:47:12,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136904968] [2022-11-23 02:47:12,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:47:12,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 02:47:12,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:47:12,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 02:47:12,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:47:12,605 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 609 out of 1600 [2022-11-23 02:47:12,612 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 58 transitions, 134 flow. Second operand has 3 states, 3 states have (on average 618.3333333333334) internal successors, (1855), 3 states have internal predecessors, (1855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:47:12,613 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:47:12,613 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 609 of 1600 [2022-11-23 02:47:12,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:47:15,559 INFO L130 PetriNetUnfolder]: 873/1099 cut-off events. [2022-11-23 02:47:15,559 INFO L131 PetriNetUnfolder]: For 45/45 co-relation queries the response was YES. [2022-11-23 02:47:15,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2266 conditions, 1099 events. 873/1099 cut-off events. For 45/45 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 2626 event pairs, 333 based on Foata normal form. 0/559 useless extension candidates. Maximal degree in co-relation 1844. Up to 1097 conditions per place. [2022-11-23 02:47:15,570 INFO L137 encePairwiseOnDemand]: 1593/1600 looper letters, 55 selfloop transitions, 6 changer transitions 0/61 dead transitions. [2022-11-23 02:47:15,570 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 61 transitions, 262 flow [2022-11-23 02:47:15,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 02:47:15,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 02:47:15,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1891 transitions. [2022-11-23 02:47:15,611 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.39395833333333335 [2022-11-23 02:47:15,612 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1891 transitions. [2022-11-23 02:47:15,613 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1891 transitions. [2022-11-23 02:47:15,619 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:47:15,623 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1891 transitions. [2022-11-23 02:47:15,636 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 630.3333333333334) internal successors, (1891), 3 states have internal predecessors, (1891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:47:15,659 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1600.0) internal successors, (6400), 4 states have internal predecessors, (6400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:47:15,664 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1600.0) internal successors, (6400), 4 states have internal predecessors, (6400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:47:15,667 INFO L175 Difference]: Start difference. First operand has 44 places, 58 transitions, 134 flow. Second operand 3 states and 1891 transitions. [2022-11-23 02:47:15,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 61 transitions, 262 flow [2022-11-23 02:47:15,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 61 transitions, 250 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-23 02:47:15,679 INFO L231 Difference]: Finished difference. Result has 41 places, 61 transitions, 154 flow [2022-11-23 02:47:15,682 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1600, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=154, PETRI_PLACES=41, PETRI_TRANSITIONS=61} [2022-11-23 02:47:15,686 INFO L288 CegarLoopForPetriNet]: 44 programPoint places, -3 predicate places. [2022-11-23 02:47:15,687 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 61 transitions, 154 flow [2022-11-23 02:47:15,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 618.3333333333334) internal successors, (1855), 3 states have internal predecessors, (1855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:47:15,689 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:47:15,690 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] [2022-11-23 02:47:15,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 02:47:15,691 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)] === [2022-11-23 02:47:15,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:47:15,692 INFO L85 PathProgramCache]: Analyzing trace with hash -1669118119, now seen corresponding path program 1 times [2022-11-23 02:47:15,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:47:15,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310468731] [2022-11-23 02:47:15,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:47:15,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:47:15,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:47:16,364 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-23 02:47:16,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:47:16,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310468731] [2022-11-23 02:47:16,365 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310468731] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:47:16,365 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:47:16,365 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 02:47:16,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855829373] [2022-11-23 02:47:16,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:47:16,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 02:47:16,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:47:16,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 02:47:16,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:47:16,759 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 609 out of 1600 [2022-11-23 02:47:16,763 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 61 transitions, 154 flow. Second operand has 3 states, 3 states have (on average 619.3333333333334) internal successors, (1858), 3 states have internal predecessors, (1858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:47:16,763 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:47:16,763 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 609 of 1600 [2022-11-23 02:47:16,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:47:19,163 INFO L130 PetriNetUnfolder]: 873/1102 cut-off events. [2022-11-23 02:47:19,163 INFO L131 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2022-11-23 02:47:19,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2242 conditions, 1102 events. 873/1102 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 2621 event pairs, 333 based on Foata normal form. 0/564 useless extension candidates. Maximal degree in co-relation 2211. Up to 1100 conditions per place. [2022-11-23 02:47:19,171 INFO L137 encePairwiseOnDemand]: 1593/1600 looper letters, 58 selfloop transitions, 6 changer transitions 0/64 dead transitions. [2022-11-23 02:47:19,172 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 64 transitions, 288 flow [2022-11-23 02:47:19,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 02:47:19,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 02:47:19,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1891 transitions. [2022-11-23 02:47:19,181 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.39395833333333335 [2022-11-23 02:47:19,181 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1891 transitions. [2022-11-23 02:47:19,181 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1891 transitions. [2022-11-23 02:47:19,183 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:47:19,184 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1891 transitions. [2022-11-23 02:47:19,190 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 630.3333333333334) internal successors, (1891), 3 states have internal predecessors, (1891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:47:19,204 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1600.0) internal successors, (6400), 4 states have internal predecessors, (6400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:47:19,209 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1600.0) internal successors, (6400), 4 states have internal predecessors, (6400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:47:19,210 INFO L175 Difference]: Start difference. First operand has 41 places, 61 transitions, 154 flow. Second operand 3 states and 1891 transitions. [2022-11-23 02:47:19,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 64 transitions, 288 flow [2022-11-23 02:47:19,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 64 transitions, 282 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-23 02:47:19,213 INFO L231 Difference]: Finished difference. Result has 43 places, 64 transitions, 180 flow [2022-11-23 02:47:19,214 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1600, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=180, PETRI_PLACES=43, PETRI_TRANSITIONS=64} [2022-11-23 02:47:19,215 INFO L288 CegarLoopForPetriNet]: 44 programPoint places, -1 predicate places. [2022-11-23 02:47:19,215 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 64 transitions, 180 flow [2022-11-23 02:47:19,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 619.3333333333334) internal successors, (1858), 3 states have internal predecessors, (1858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:47:19,218 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:47:19,218 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] [2022-11-23 02:47:19,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 02:47:19,219 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)] === [2022-11-23 02:47:19,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:47:19,220 INFO L85 PathProgramCache]: Analyzing trace with hash -1420465229, now seen corresponding path program 1 times [2022-11-23 02:47:19,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:47:19,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285109499] [2022-11-23 02:47:19,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:47:19,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:47:19,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:47:19,741 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 02:47:19,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:47:19,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285109499] [2022-11-23 02:47:19,742 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285109499] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:47:19,743 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:47:19,743 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 02:47:19,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495845261] [2022-11-23 02:47:19,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:47:19,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 02:47:19,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:47:19,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 02:47:19,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:47:20,047 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 609 out of 1600 [2022-11-23 02:47:20,051 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 64 transitions, 180 flow. Second operand has 3 states, 3 states have (on average 620.3333333333334) internal successors, (1861), 3 states have internal predecessors, (1861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:47:20,051 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:47:20,051 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 609 of 1600 [2022-11-23 02:47:20,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:47:22,803 INFO L130 PetriNetUnfolder]: 873/1108 cut-off events. [2022-11-23 02:47:22,803 INFO L131 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2022-11-23 02:47:22,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2265 conditions, 1108 events. 873/1108 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 2621 event pairs, 333 based on Foata normal form. 0/571 useless extension candidates. Maximal degree in co-relation 2229. Up to 1103 conditions per place. [2022-11-23 02:47:22,812 INFO L137 encePairwiseOnDemand]: 1587/1600 looper letters, 58 selfloop transitions, 12 changer transitions 0/70 dead transitions. [2022-11-23 02:47:22,813 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 70 transitions, 332 flow [2022-11-23 02:47:22,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 02:47:22,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 02:47:22,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1897 transitions. [2022-11-23 02:47:22,821 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.39520833333333333 [2022-11-23 02:47:22,821 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1897 transitions. [2022-11-23 02:47:22,822 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1897 transitions. [2022-11-23 02:47:22,824 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:47:22,824 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1897 transitions. [2022-11-23 02:47:22,831 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 632.3333333333334) internal successors, (1897), 3 states have internal predecessors, (1897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:47:22,845 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1600.0) internal successors, (6400), 4 states have internal predecessors, (6400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:47:22,850 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1600.0) internal successors, (6400), 4 states have internal predecessors, (6400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:47:22,851 INFO L175 Difference]: Start difference. First operand has 43 places, 64 transitions, 180 flow. Second operand 3 states and 1897 transitions. [2022-11-23 02:47:22,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 70 transitions, 332 flow [2022-11-23 02:47:22,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 70 transitions, 326 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-23 02:47:22,857 INFO L231 Difference]: Finished difference. Result has 45 places, 70 transitions, 236 flow [2022-11-23 02:47:22,858 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1600, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=236, PETRI_PLACES=45, PETRI_TRANSITIONS=70} [2022-11-23 02:47:22,861 INFO L288 CegarLoopForPetriNet]: 44 programPoint places, 1 predicate places. [2022-11-23 02:47:22,861 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 70 transitions, 236 flow [2022-11-23 02:47:22,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 620.3333333333334) internal successors, (1861), 3 states have internal predecessors, (1861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:47:22,864 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:47:22,864 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] [2022-11-23 02:47:22,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 02:47:22,865 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)] === [2022-11-23 02:47:22,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:47:22,866 INFO L85 PathProgramCache]: Analyzing trace with hash -1894892287, now seen corresponding path program 1 times [2022-11-23 02:47:22,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:47:22,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079662308] [2022-11-23 02:47:22,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:47:22,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:47:23,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:47:23,648 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-23 02:47:23,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:47:23,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079662308] [2022-11-23 02:47:23,651 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079662308] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:47:23,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1403366159] [2022-11-23 02:47:23,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:47:23,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:47:23,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82347acf-d020-408d-b024-caa8494439fc/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:47:23,662 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82347acf-d020-408d-b024-caa8494439fc/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:47:23,672 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82347acf-d020-408d-b024-caa8494439fc/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 02:47:25,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:47:25,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 696 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-23 02:47:25,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:47:25,162 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-23 02:47:25,162 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 02:47:25,227 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-23 02:47:25,228 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1403366159] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 02:47:25,230 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 02:47:25,230 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 8 [2022-11-23 02:47:25,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530350436] [2022-11-23 02:47:25,231 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 02:47:25,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-23 02:47:25,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:47:25,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-23 02:47:25,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2022-11-23 02:47:26,264 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 585 out of 1600 [2022-11-23 02:47:26,272 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 70 transitions, 236 flow. Second operand has 8 states, 8 states have (on average 591.25) internal successors, (4730), 8 states have internal predecessors, (4730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:47:26,272 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:47:26,273 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 585 of 1600 [2022-11-23 02:47:26,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:47:28,745 INFO L130 PetriNetUnfolder]: 873/1132 cut-off events. [2022-11-23 02:47:28,745 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-11-23 02:47:28,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2360 conditions, 1132 events. 873/1132 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 2607 event pairs, 333 based on Foata normal form. 11/610 useless extension candidates. Maximal degree in co-relation 2296. Up to 1097 conditions per place. [2022-11-23 02:47:28,754 INFO L137 encePairwiseOnDemand]: 1575/1600 looper letters, 46 selfloop transitions, 48 changer transitions 0/94 dead transitions. [2022-11-23 02:47:28,755 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 94 transitions, 520 flow [2022-11-23 02:47:28,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-23 02:47:28,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-23 02:47:28,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 4798 transitions. [2022-11-23 02:47:28,773 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.37484375 [2022-11-23 02:47:28,774 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 4798 transitions. [2022-11-23 02:47:28,774 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 4798 transitions. [2022-11-23 02:47:28,779 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:47:28,779 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 4798 transitions. [2022-11-23 02:47:28,796 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 599.75) internal successors, (4798), 8 states have internal predecessors, (4798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:47:28,825 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 1600.0) internal successors, (14400), 9 states have internal predecessors, (14400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:47:28,832 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 1600.0) internal successors, (14400), 9 states have internal predecessors, (14400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:47:28,832 INFO L175 Difference]: Start difference. First operand has 45 places, 70 transitions, 236 flow. Second operand 8 states and 4798 transitions. [2022-11-23 02:47:28,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 94 transitions, 520 flow [2022-11-23 02:47:28,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 94 transitions, 508 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-23 02:47:28,838 INFO L231 Difference]: Finished difference. Result has 52 places, 94 transitions, 466 flow [2022-11-23 02:47:28,839 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1600, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=466, PETRI_PLACES=52, PETRI_TRANSITIONS=94} [2022-11-23 02:47:28,840 INFO L288 CegarLoopForPetriNet]: 44 programPoint places, 8 predicate places. [2022-11-23 02:47:28,840 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 94 transitions, 466 flow [2022-11-23 02:47:28,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 591.25) internal successors, (4730), 8 states have internal predecessors, (4730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:47:28,844 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:47:28,844 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:47:28,867 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82347acf-d020-408d-b024-caa8494439fc/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-23 02:47:29,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82347acf-d020-408d-b024-caa8494439fc/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:47:29,066 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)] === [2022-11-23 02:47:29,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:47:29,067 INFO L85 PathProgramCache]: Analyzing trace with hash 1429885130, now seen corresponding path program 2 times [2022-11-23 02:47:29,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:47:29,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991552402] [2022-11-23 02:47:29,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:47:29,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:47:29,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:47:30,172 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2022-11-23 02:47:30,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:47:30,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991552402] [2022-11-23 02:47:30,174 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991552402] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:47:30,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [110683364] [2022-11-23 02:47:30,174 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-23 02:47:30,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:47:30,175 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82347acf-d020-408d-b024-caa8494439fc/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:47:30,179 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82347acf-d020-408d-b024-caa8494439fc/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:47:30,205 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82347acf-d020-408d-b024-caa8494439fc/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 02:47:31,681 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-23 02:47:31,682 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 02:47:31,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 588 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-23 02:47:31,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:51:15,867 WARN L233 SmtUtils]: Spent 3.57m on a formula simplification. DAG size of input: 213 DAG size of output: 210 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 02:51:17,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 02:51:17,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 02:51:17,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 02:51:17,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 02:51:17,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 02:51:17,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 02:54:45,207 WARN L233 SmtUtils]: Spent 3.47m on a formula simplification. DAG size of input: 5107 DAG size of output: 3873 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-23 02:54:45,227 INFO L321 Elim1Store]: treesize reduction 2614, result has 74.4 percent of original size [2022-11-23 02:54:45,233 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 49 select indices, 49 select index equivalence classes, 6 disjoint index pairs (out of 1176 index pairs), introduced 49 new quantified variables, introduced 1219 case distinctions, treesize of input 2320 treesize of output 9520