./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/parallel-barrier.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_b427bb79-267f-4a48-bbf0-ec65b815a39a/bin/uautomizer-QkZJyEgLgS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b427bb79-267f-4a48-bbf0-ec65b815a39a/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_b427bb79-267f-4a48-bbf0-ec65b815a39a/bin/uautomizer-QkZJyEgLgS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b427bb79-267f-4a48-bbf0-ec65b815a39a/bin/uautomizer-QkZJyEgLgS/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-barrier.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b427bb79-267f-4a48-bbf0-ec65b815a39a/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_b427bb79-267f-4a48-bbf0-ec65b815a39a/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 22b51332425cd14048935a20a73abea0065b1633fac56d6d6be511ab67585236 --- 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 02:15:24,940 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 02:15:24,942 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 02:15:24,970 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 02:15:24,971 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 02:15:24,974 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 02:15:24,977 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 02:15:24,980 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 02:15:24,983 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 02:15:24,989 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 02:15:24,991 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 02:15:24,993 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 02:15:24,994 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 02:15:24,996 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 02:15:24,999 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 02:15:25,001 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 02:15:25,003 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 02:15:25,003 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 02:15:25,005 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 02:15:25,012 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 02:15:25,013 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 02:15:25,015 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 02:15:25,017 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 02:15:25,018 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 02:15:25,028 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 02:15:25,028 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 02:15:25,029 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 02:15:25,031 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 02:15:25,031 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 02:15:25,032 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 02:15:25,033 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 02:15:25,034 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 02:15:25,036 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 02:15:25,037 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 02:15:25,039 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 02:15:25,039 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 02:15:25,040 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 02:15:25,040 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 02:15:25,040 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 02:15:25,042 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 02:15:25,042 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 02:15:25,043 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b427bb79-267f-4a48-bbf0-ec65b815a39a/bin/uautomizer-QkZJyEgLgS/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-23 02:15:25,091 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 02:15:25,091 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 02:15:25,092 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 02:15:25,092 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 02:15:25,093 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 02:15:25,093 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 02:15:25,093 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-23 02:15:25,094 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-23 02:15:25,094 INFO L138 SettingsManager]: * Use SBE=true [2022-11-23 02:15:25,094 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 02:15:25,096 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 02:15:25,096 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 02:15:25,096 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 02:15:25,097 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 02:15:25,097 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 02:15:25,097 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 02:15:25,097 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 02:15:25,097 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 02:15:25,098 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 02:15:25,098 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 02:15:25,098 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 02:15:25,098 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 02:15:25,098 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 02:15:25,099 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 02:15:25,099 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 02:15:25,099 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 02:15:25,099 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 02:15:25,099 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 02:15:25,100 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-23 02:15:25,100 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 02:15:25,101 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-23 02:15:25,101 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 02:15:25,101 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-23 02:15:25,101 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 02:15:25,102 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_b427bb79-267f-4a48-bbf0-ec65b815a39a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b427bb79-267f-4a48-bbf0-ec65b815a39a/bin/uautomizer-QkZJyEgLgS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 22b51332425cd14048935a20a73abea0065b1633fac56d6d6be511ab67585236 [2022-11-23 02:15:25,375 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 02:15:25,414 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 02:15:25,417 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 02:15:25,418 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 02:15:25,419 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 02:15:25,420 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b427bb79-267f-4a48-bbf0-ec65b815a39a/bin/uautomizer-QkZJyEgLgS/../../sv-benchmarks/c/weaver/parallel-barrier.wvr.c [2022-11-23 02:15:28,487 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 02:15:28,712 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 02:15:28,713 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b427bb79-267f-4a48-bbf0-ec65b815a39a/sv-benchmarks/c/weaver/parallel-barrier.wvr.c [2022-11-23 02:15:28,721 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b427bb79-267f-4a48-bbf0-ec65b815a39a/bin/uautomizer-QkZJyEgLgS/data/7089ee4ef/64dd361719e14f7899814c241540b0fb/FLAGab9aba30f [2022-11-23 02:15:28,735 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b427bb79-267f-4a48-bbf0-ec65b815a39a/bin/uautomizer-QkZJyEgLgS/data/7089ee4ef/64dd361719e14f7899814c241540b0fb [2022-11-23 02:15:28,738 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 02:15:28,739 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 02:15:28,741 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 02:15:28,741 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 02:15:28,749 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 02:15:28,750 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:15:28" (1/1) ... [2022-11-23 02:15:28,751 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69b28087 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:15:28, skipping insertion in model container [2022-11-23 02:15:28,751 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:15:28" (1/1) ... [2022-11-23 02:15:28,759 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 02:15:28,797 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 02:15:28,988 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_b427bb79-267f-4a48-bbf0-ec65b815a39a/sv-benchmarks/c/weaver/parallel-barrier.wvr.c[4722,4735] [2022-11-23 02:15:28,993 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 02:15:29,004 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 02:15:29,037 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_b427bb79-267f-4a48-bbf0-ec65b815a39a/sv-benchmarks/c/weaver/parallel-barrier.wvr.c[4722,4735] [2022-11-23 02:15:29,038 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 02:15:29,051 INFO L208 MainTranslator]: Completed translation [2022-11-23 02:15:29,052 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:15:29 WrapperNode [2022-11-23 02:15:29,052 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 02:15:29,053 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 02:15:29,053 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 02:15:29,053 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 02:15:29,059 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:15:29" (1/1) ... [2022-11-23 02:15:29,067 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:15:29" (1/1) ... [2022-11-23 02:15:29,096 INFO L138 Inliner]: procedures = 25, calls = 98, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 253 [2022-11-23 02:15:29,096 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 02:15:29,097 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 02:15:29,097 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 02:15:29,097 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 02:15:29,106 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:15:29" (1/1) ... [2022-11-23 02:15:29,107 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:15:29" (1/1) ... [2022-11-23 02:15:29,110 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:15:29" (1/1) ... [2022-11-23 02:15:29,111 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:15:29" (1/1) ... [2022-11-23 02:15:29,125 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:15:29" (1/1) ... [2022-11-23 02:15:29,138 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:15:29" (1/1) ... [2022-11-23 02:15:29,140 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:15:29" (1/1) ... [2022-11-23 02:15:29,142 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:15:29" (1/1) ... [2022-11-23 02:15:29,147 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 02:15:29,148 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 02:15:29,148 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 02:15:29,149 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 02:15:29,150 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:15:29" (1/1) ... [2022-11-23 02:15:29,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 02:15:29,175 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b427bb79-267f-4a48-bbf0-ec65b815a39a/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:15:29,187 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b427bb79-267f-4a48-bbf0-ec65b815a39a/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 02:15:29,215 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b427bb79-267f-4a48-bbf0-ec65b815a39a/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 02:15:29,233 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 02:15:29,233 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 02:15:29,234 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 02:15:29,234 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 02:15:29,234 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-23 02:15:29,235 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-23 02:15:29,240 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-23 02:15:29,241 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-23 02:15:29,241 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-23 02:15:29,241 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-23 02:15:29,241 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-11-23 02:15:29,241 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-11-23 02:15:29,241 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 02:15:29,241 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2022-11-23 02:15:29,242 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2022-11-23 02:15:29,242 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2022-11-23 02:15:29,242 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2022-11-23 02:15:29,242 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-23 02:15:29,242 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-23 02:15:29,242 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 02:15:29,242 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 02:15:29,243 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 02:15:29,244 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 02:15:29,364 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 02:15:29,366 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 02:15:29,770 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 02:15:29,854 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 02:15:29,855 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-23 02:15:29,857 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:15:29 BoogieIcfgContainer [2022-11-23 02:15:29,857 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 02:15:29,872 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 02:15:29,872 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 02:15:29,875 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 02:15:29,876 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:15:28" (1/3) ... [2022-11-23 02:15:29,878 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a2f0713 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:15:29, skipping insertion in model container [2022-11-23 02:15:29,878 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:15:29" (2/3) ... [2022-11-23 02:15:29,879 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a2f0713 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:15:29, skipping insertion in model container [2022-11-23 02:15:29,879 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:15:29" (3/3) ... [2022-11-23 02:15:29,881 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-barrier.wvr.c [2022-11-23 02:15:29,894 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-23 02:15:29,905 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 02:15:29,906 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 02:15:29,906 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-23 02:15:30,145 INFO L144 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2022-11-23 02:15:30,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 246 places, 235 transitions, 542 flow [2022-11-23 02:15:30,376 INFO L130 PetriNetUnfolder]: 8/207 cut-off events. [2022-11-23 02:15:30,376 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-23 02:15:30,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 236 conditions, 207 events. 8/207 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 238 event pairs, 0 based on Foata normal form. 0/198 useless extension candidates. Maximal degree in co-relation 177. Up to 3 conditions per place. [2022-11-23 02:15:30,383 INFO L82 GeneralOperation]: Start removeDead. Operand has 246 places, 235 transitions, 542 flow [2022-11-23 02:15:30,390 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 209 places, 198 transitions, 444 flow [2022-11-23 02:15:30,394 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-23 02:15:30,419 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 209 places, 198 transitions, 444 flow [2022-11-23 02:15:30,424 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 209 places, 198 transitions, 444 flow [2022-11-23 02:15:30,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 209 places, 198 transitions, 444 flow [2022-11-23 02:15:30,523 INFO L130 PetriNetUnfolder]: 8/198 cut-off events. [2022-11-23 02:15:30,523 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-23 02:15:30,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 227 conditions, 198 events. 8/198 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 237 event pairs, 0 based on Foata normal form. 0/190 useless extension candidates. Maximal degree in co-relation 177. Up to 3 conditions per place. [2022-11-23 02:15:30,535 INFO L119 LiptonReduction]: Number of co-enabled transitions 7736 [2022-11-23 02:15:36,456 INFO L134 LiptonReduction]: Checked pairs total: 36856 [2022-11-23 02:15:36,456 INFO L136 LiptonReduction]: Total number of compositions: 149 [2022-11-23 02:15:36,472 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 02:15:36,491 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;@2fd9fd72, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 02:15:36,491 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2022-11-23 02:15:36,508 INFO L130 PetriNetUnfolder]: 5/67 cut-off events. [2022-11-23 02:15:36,508 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-23 02:15:36,508 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:15:36,509 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] [2022-11-23 02:15:36,510 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-23 02:15:36,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:15:36,515 INFO L85 PathProgramCache]: Analyzing trace with hash 226737365, now seen corresponding path program 1 times [2022-11-23 02:15:36,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:15:36,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875756999] [2022-11-23 02:15:36,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:15:36,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:15:36,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:15:36,859 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 02:15:36,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:15:36,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875756999] [2022-11-23 02:15:36,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875756999] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:15:36,861 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:15:36,862 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 02:15:36,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769327480] [2022-11-23 02:15:36,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:15:36,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-23 02:15:36,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:15:36,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-23 02:15:36,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 02:15:36,898 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 206 out of 388 [2022-11-23 02:15:36,901 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 68 transitions, 184 flow. Second operand has 2 states, 2 states have (on average 226.0) internal successors, (452), 2 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:15:36,901 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:15:36,901 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 206 of 388 [2022-11-23 02:15:36,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:15:40,538 INFO L130 PetriNetUnfolder]: 17085/24119 cut-off events. [2022-11-23 02:15:40,539 INFO L131 PetriNetUnfolder]: For 3791/3791 co-relation queries the response was YES. [2022-11-23 02:15:40,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50648 conditions, 24119 events. 17085/24119 cut-off events. For 3791/3791 co-relation queries the response was YES. Maximal size of possible extension queue 685. Compared 139564 event pairs, 16065 based on Foata normal form. 102/22900 useless extension candidates. Maximal degree in co-relation 49955. Up to 22289 conditions per place. [2022-11-23 02:15:40,726 INFO L137 encePairwiseOnDemand]: 387/388 looper letters, 45 selfloop transitions, 0 changer transitions 0/67 dead transitions. [2022-11-23 02:15:40,726 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 67 transitions, 272 flow [2022-11-23 02:15:40,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-23 02:15:40,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-23 02:15:40,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 458 transitions. [2022-11-23 02:15:40,749 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5902061855670103 [2022-11-23 02:15:40,750 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 458 transitions. [2022-11-23 02:15:40,751 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 458 transitions. [2022-11-23 02:15:40,755 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:15:40,757 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 458 transitions. [2022-11-23 02:15:40,761 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 229.0) internal successors, (458), 2 states have internal predecessors, (458), 0 states have call successors, (0), 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 02:15:40,768 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 388.0) internal successors, (1164), 3 states have internal predecessors, (1164), 0 states have call successors, (0), 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 02:15:40,768 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 388.0) internal successors, (1164), 3 states have internal predecessors, (1164), 0 states have call successors, (0), 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 02:15:40,770 INFO L175 Difference]: Start difference. First operand has 82 places, 68 transitions, 184 flow. Second operand 2 states and 458 transitions. [2022-11-23 02:15:40,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 67 transitions, 272 flow [2022-11-23 02:15:40,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 67 transitions, 240 flow, removed 0 selfloop flow, removed 12 redundant places. [2022-11-23 02:15:40,851 INFO L231 Difference]: Finished difference. Result has 71 places, 67 transitions, 150 flow [2022-11-23 02:15:40,853 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=388, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=150, PETRI_PLACES=71, PETRI_TRANSITIONS=67} [2022-11-23 02:15:40,857 INFO L288 CegarLoopForPetriNet]: 82 programPoint places, -11 predicate places. [2022-11-23 02:15:40,858 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 67 transitions, 150 flow [2022-11-23 02:15:40,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 226.0) internal successors, (452), 2 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:15:40,862 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:15:40,862 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] [2022-11-23 02:15:40,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 02:15:40,863 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-23 02:15:40,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:15:40,866 INFO L85 PathProgramCache]: Analyzing trace with hash 1812870210, now seen corresponding path program 1 times [2022-11-23 02:15:40,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:15:40,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680472025] [2022-11-23 02:15:40,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:15:40,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:15:41,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:15:42,940 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 02:15:42,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:15:42,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680472025] [2022-11-23 02:15:42,941 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680472025] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:15:42,941 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:15:42,941 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-11-23 02:15:42,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045033318] [2022-11-23 02:15:42,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:15:42,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-23 02:15:42,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:15:42,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-23 02:15:42,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=304, Unknown=0, NotChecked=0, Total=342 [2022-11-23 02:15:43,932 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 388 [2022-11-23 02:15:43,936 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 67 transitions, 150 flow. Second operand has 19 states, 19 states have (on average 177.3684210526316) internal successors, (3370), 19 states have internal predecessors, (3370), 0 states have call successors, (0), 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 02:15:43,936 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:15:43,936 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 388 [2022-11-23 02:15:43,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:15:54,539 INFO L130 PetriNetUnfolder]: 50458/67429 cut-off events. [2022-11-23 02:15:54,539 INFO L131 PetriNetUnfolder]: For 2110/2110 co-relation queries the response was YES. [2022-11-23 02:15:54,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134542 conditions, 67429 events. 50458/67429 cut-off events. For 2110/2110 co-relation queries the response was YES. Maximal size of possible extension queue 1399. Compared 373074 event pairs, 7214 based on Foata normal form. 1/64469 useless extension candidates. Maximal degree in co-relation 134539. Up to 47277 conditions per place. [2022-11-23 02:15:55,021 INFO L137 encePairwiseOnDemand]: 370/388 looper letters, 477 selfloop transitions, 162 changer transitions 18/675 dead transitions. [2022-11-23 02:15:55,021 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 675 transitions, 2850 flow [2022-11-23 02:15:55,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-11-23 02:15:55,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-11-23 02:15:55,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 8358 transitions. [2022-11-23 02:15:55,041 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48957357075913777 [2022-11-23 02:15:55,042 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 8358 transitions. [2022-11-23 02:15:55,042 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 8358 transitions. [2022-11-23 02:15:55,046 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:15:55,047 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 8358 transitions. [2022-11-23 02:15:55,065 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 189.95454545454547) internal successors, (8358), 44 states have internal predecessors, (8358), 0 states have call successors, (0), 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 02:15:55,097 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 388.0) internal successors, (17460), 45 states have internal predecessors, (17460), 0 states have call successors, (0), 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 02:15:55,106 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 388.0) internal successors, (17460), 45 states have internal predecessors, (17460), 0 states have call successors, (0), 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 02:15:55,106 INFO L175 Difference]: Start difference. First operand has 71 places, 67 transitions, 150 flow. Second operand 44 states and 8358 transitions. [2022-11-23 02:15:55,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 675 transitions, 2850 flow [2022-11-23 02:15:55,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 675 transitions, 2850 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-23 02:15:55,121 INFO L231 Difference]: Finished difference. Result has 134 places, 236 transitions, 1004 flow [2022-11-23 02:15:55,121 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=388, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=1004, PETRI_PLACES=134, PETRI_TRANSITIONS=236} [2022-11-23 02:15:55,125 INFO L288 CegarLoopForPetriNet]: 82 programPoint places, 52 predicate places. [2022-11-23 02:15:55,126 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 236 transitions, 1004 flow [2022-11-23 02:15:55,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 177.3684210526316) internal successors, (3370), 19 states have internal predecessors, (3370), 0 states have call successors, (0), 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 02:15:55,128 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:15:55,128 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] [2022-11-23 02:15:55,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 02:15:55,129 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-23 02:15:55,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:15:55,132 INFO L85 PathProgramCache]: Analyzing trace with hash -607428536, now seen corresponding path program 2 times [2022-11-23 02:15:55,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:15:55,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758802228] [2022-11-23 02:15:55,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:15:55,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:15:55,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:15:55,489 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 02:15:55,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:15:55,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758802228] [2022-11-23 02:15:55,490 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758802228] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:15:55,491 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:15:55,491 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 02:15:55,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956050332] [2022-11-23 02:15:55,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:15:55,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 02:15:55,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:15:55,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 02:15:55,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-23 02:15:55,510 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 388 [2022-11-23 02:15:55,512 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 236 transitions, 1004 flow. Second operand has 4 states, 4 states have (on average 212.25) internal successors, (849), 4 states have internal predecessors, (849), 0 states have call successors, (0), 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 02:15:55,512 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:15:55,512 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 388 [2022-11-23 02:15:55,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:16:00,896 INFO L130 PetriNetUnfolder]: 31905/44663 cut-off events. [2022-11-23 02:16:00,896 INFO L131 PetriNetUnfolder]: For 81755/82081 co-relation queries the response was YES. [2022-11-23 02:16:01,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129418 conditions, 44663 events. 31905/44663 cut-off events. For 81755/82081 co-relation queries the response was YES. Maximal size of possible extension queue 1122. Compared 266289 event pairs, 13596 based on Foata normal form. 552/42353 useless extension candidates. Maximal degree in co-relation 129394. Up to 35261 conditions per place. [2022-11-23 02:16:01,405 INFO L137 encePairwiseOnDemand]: 384/388 looper letters, 274 selfloop transitions, 14 changer transitions 0/316 dead transitions. [2022-11-23 02:16:01,406 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 316 transitions, 1911 flow [2022-11-23 02:16:01,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 02:16:01,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-23 02:16:01,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 900 transitions. [2022-11-23 02:16:01,410 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5798969072164949 [2022-11-23 02:16:01,410 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 900 transitions. [2022-11-23 02:16:01,410 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 900 transitions. [2022-11-23 02:16:01,411 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:16:01,411 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 900 transitions. [2022-11-23 02:16:01,414 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 225.0) internal successors, (900), 4 states have internal predecessors, (900), 0 states have call successors, (0), 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 02:16:01,417 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 388.0) internal successors, (1940), 5 states have internal predecessors, (1940), 0 states have call successors, (0), 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 02:16:01,418 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 388.0) internal successors, (1940), 5 states have internal predecessors, (1940), 0 states have call successors, (0), 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 02:16:01,418 INFO L175 Difference]: Start difference. First operand has 134 places, 236 transitions, 1004 flow. Second operand 4 states and 900 transitions. [2022-11-23 02:16:01,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 316 transitions, 1911 flow [2022-11-23 02:16:02,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 316 transitions, 1911 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-23 02:16:02,685 INFO L231 Difference]: Finished difference. Result has 138 places, 236 transitions, 1047 flow [2022-11-23 02:16:02,685 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=388, PETRI_DIFFERENCE_MINUEND_FLOW=1004, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1047, PETRI_PLACES=138, PETRI_TRANSITIONS=236} [2022-11-23 02:16:02,686 INFO L288 CegarLoopForPetriNet]: 82 programPoint places, 56 predicate places. [2022-11-23 02:16:02,686 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 236 transitions, 1047 flow [2022-11-23 02:16:02,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 212.25) internal successors, (849), 4 states have internal predecessors, (849), 0 states have call successors, (0), 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 02:16:02,687 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:16:02,688 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] [2022-11-23 02:16:02,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 02:16:02,688 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-23 02:16:02,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:16:02,689 INFO L85 PathProgramCache]: Analyzing trace with hash 199563528, now seen corresponding path program 3 times [2022-11-23 02:16:02,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:16:02,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187202723] [2022-11-23 02:16:02,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:16:02,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:16:02,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:16:03,040 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 02:16:03,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:16:03,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187202723] [2022-11-23 02:16:03,041 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187202723] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:16:03,041 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:16:03,041 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 02:16:03,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795950925] [2022-11-23 02:16:03,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:16:03,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 02:16:03,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:16:03,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 02:16:03,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-23 02:16:03,055 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 388 [2022-11-23 02:16:03,056 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 236 transitions, 1047 flow. Second operand has 4 states, 4 states have (on average 212.25) internal successors, (849), 4 states have internal predecessors, (849), 0 states have call successors, (0), 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 02:16:03,056 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:16:03,056 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 388 [2022-11-23 02:16:03,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:16:06,939 INFO L130 PetriNetUnfolder]: 21999/31973 cut-off events. [2022-11-23 02:16:06,939 INFO L131 PetriNetUnfolder]: For 71916/72106 co-relation queries the response was YES. [2022-11-23 02:16:07,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96130 conditions, 31973 events. 21999/31973 cut-off events. For 71916/72106 co-relation queries the response was YES. Maximal size of possible extension queue 788. Compared 194433 event pairs, 9080 based on Foata normal form. 1134/31137 useless extension candidates. Maximal degree in co-relation 96104. Up to 20269 conditions per place. [2022-11-23 02:16:07,238 INFO L137 encePairwiseOnDemand]: 384/388 looper letters, 208 selfloop transitions, 21 changer transitions 2/259 dead transitions. [2022-11-23 02:16:07,238 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 259 transitions, 1585 flow [2022-11-23 02:16:07,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 02:16:07,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-23 02:16:07,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 898 transitions. [2022-11-23 02:16:07,243 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5786082474226805 [2022-11-23 02:16:07,243 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 898 transitions. [2022-11-23 02:16:07,243 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 898 transitions. [2022-11-23 02:16:07,244 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:16:07,244 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 898 transitions. [2022-11-23 02:16:07,246 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 224.5) internal successors, (898), 4 states have internal predecessors, (898), 0 states have call successors, (0), 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 02:16:07,250 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 388.0) internal successors, (1940), 5 states have internal predecessors, (1940), 0 states have call successors, (0), 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 02:16:07,251 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 388.0) internal successors, (1940), 5 states have internal predecessors, (1940), 0 states have call successors, (0), 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 02:16:07,251 INFO L175 Difference]: Start difference. First operand has 138 places, 236 transitions, 1047 flow. Second operand 4 states and 898 transitions. [2022-11-23 02:16:07,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 259 transitions, 1585 flow [2022-11-23 02:16:07,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 259 transitions, 1537 flow, removed 9 selfloop flow, removed 6 redundant places. [2022-11-23 02:16:07,548 INFO L231 Difference]: Finished difference. Result has 128 places, 179 transitions, 814 flow [2022-11-23 02:16:07,549 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=388, PETRI_DIFFERENCE_MINUEND_FLOW=760, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=814, PETRI_PLACES=128, PETRI_TRANSITIONS=179} [2022-11-23 02:16:07,550 INFO L288 CegarLoopForPetriNet]: 82 programPoint places, 46 predicate places. [2022-11-23 02:16:07,550 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 179 transitions, 814 flow [2022-11-23 02:16:07,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 212.25) internal successors, (849), 4 states have internal predecessors, (849), 0 states have call successors, (0), 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 02:16:07,551 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:16:07,551 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] [2022-11-23 02:16:07,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 02:16:07,552 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-23 02:16:07,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:16:07,552 INFO L85 PathProgramCache]: Analyzing trace with hash -129521247, now seen corresponding path program 1 times [2022-11-23 02:16:07,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:16:07,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124797074] [2022-11-23 02:16:07,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:16:07,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:16:07,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:16:08,041 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 02:16:08,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:16:08,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124797074] [2022-11-23 02:16:08,042 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124797074] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:16:08,042 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:16:08,043 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 02:16:08,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079312684] [2022-11-23 02:16:08,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:16:08,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 02:16:08,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:16:08,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 02:16:08,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-23 02:16:08,055 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 388 [2022-11-23 02:16:08,058 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 179 transitions, 814 flow. Second operand has 4 states, 4 states have (on average 212.25) internal successors, (849), 4 states have internal predecessors, (849), 0 states have call successors, (0), 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 02:16:08,058 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:16:08,058 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 388 [2022-11-23 02:16:08,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:16:10,994 INFO L130 PetriNetUnfolder]: 16145/23392 cut-off events. [2022-11-23 02:16:10,994 INFO L131 PetriNetUnfolder]: For 42978/43154 co-relation queries the response was YES. [2022-11-23 02:16:11,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68959 conditions, 23392 events. 16145/23392 cut-off events. For 42978/43154 co-relation queries the response was YES. Maximal size of possible extension queue 539. Compared 134550 event pairs, 8997 based on Foata normal form. 444/22352 useless extension candidates. Maximal degree in co-relation 68935. Up to 17789 conditions per place. [2022-11-23 02:16:11,433 INFO L137 encePairwiseOnDemand]: 384/388 looper letters, 181 selfloop transitions, 7 changer transitions 0/215 dead transitions. [2022-11-23 02:16:11,434 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 215 transitions, 1328 flow [2022-11-23 02:16:11,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 02:16:11,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-23 02:16:11,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 898 transitions. [2022-11-23 02:16:11,436 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5786082474226805 [2022-11-23 02:16:11,436 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 898 transitions. [2022-11-23 02:16:11,436 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 898 transitions. [2022-11-23 02:16:11,437 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:16:11,437 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 898 transitions. [2022-11-23 02:16:11,439 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 224.5) internal successors, (898), 4 states have internal predecessors, (898), 0 states have call successors, (0), 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 02:16:11,442 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 388.0) internal successors, (1940), 5 states have internal predecessors, (1940), 0 states have call successors, (0), 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 02:16:11,443 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 388.0) internal successors, (1940), 5 states have internal predecessors, (1940), 0 states have call successors, (0), 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 02:16:11,443 INFO L175 Difference]: Start difference. First operand has 128 places, 179 transitions, 814 flow. Second operand 4 states and 898 transitions. [2022-11-23 02:16:11,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 215 transitions, 1328 flow [2022-11-23 02:16:11,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 215 transitions, 1270 flow, removed 2 selfloop flow, removed 5 redundant places. [2022-11-23 02:16:11,578 INFO L231 Difference]: Finished difference. Result has 123 places, 167 transitions, 728 flow [2022-11-23 02:16:11,579 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=388, PETRI_DIFFERENCE_MINUEND_FLOW=706, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=728, PETRI_PLACES=123, PETRI_TRANSITIONS=167} [2022-11-23 02:16:11,582 INFO L288 CegarLoopForPetriNet]: 82 programPoint places, 41 predicate places. [2022-11-23 02:16:11,582 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 167 transitions, 728 flow [2022-11-23 02:16:11,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 212.25) internal successors, (849), 4 states have internal predecessors, (849), 0 states have call successors, (0), 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 02:16:11,583 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:16:11,584 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] [2022-11-23 02:16:11,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 02:16:11,584 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-23 02:16:11,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:16:11,585 INFO L85 PathProgramCache]: Analyzing trace with hash 1276164671, now seen corresponding path program 2 times [2022-11-23 02:16:11,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:16:11,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262727514] [2022-11-23 02:16:11,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:16:11,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:16:11,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:16:12,908 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 02:16:12,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:16:12,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262727514] [2022-11-23 02:16:12,909 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262727514] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:16:12,909 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:16:12,909 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-11-23 02:16:12,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807380958] [2022-11-23 02:16:12,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:16:12,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-23 02:16:12,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:16:12,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-23 02:16:12,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2022-11-23 02:16:13,792 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 388 [2022-11-23 02:16:13,796 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 167 transitions, 728 flow. Second operand has 18 states, 18 states have (on average 177.5) internal successors, (3195), 18 states have internal predecessors, (3195), 0 states have call successors, (0), 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 02:16:13,796 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:16:13,796 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 388 [2022-11-23 02:16:13,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:16:21,786 INFO L130 PetriNetUnfolder]: 30792/41923 cut-off events. [2022-11-23 02:16:21,787 INFO L131 PetriNetUnfolder]: For 67313/67313 co-relation queries the response was YES. [2022-11-23 02:16:21,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128339 conditions, 41923 events. 30792/41923 cut-off events. For 67313/67313 co-relation queries the response was YES. Maximal size of possible extension queue 771. Compared 222552 event pairs, 3570 based on Foata normal form. 1/40365 useless extension candidates. Maximal degree in co-relation 128316. Up to 28511 conditions per place. [2022-11-23 02:16:22,030 INFO L137 encePairwiseOnDemand]: 370/388 looper letters, 418 selfloop transitions, 190 changer transitions 34/660 dead transitions. [2022-11-23 02:16:22,030 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 660 transitions, 3874 flow [2022-11-23 02:16:22,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-11-23 02:16:22,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2022-11-23 02:16:22,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 7357 transitions. [2022-11-23 02:16:22,047 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48618821041501453 [2022-11-23 02:16:22,048 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 7357 transitions. [2022-11-23 02:16:22,048 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 7357 transitions. [2022-11-23 02:16:22,053 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:16:22,053 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 7357 transitions. [2022-11-23 02:16:22,067 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 188.64102564102564) internal successors, (7357), 39 states have internal predecessors, (7357), 0 states have call successors, (0), 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 02:16:22,088 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 388.0) internal successors, (15520), 40 states have internal predecessors, (15520), 0 states have call successors, (0), 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 02:16:22,093 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 388.0) internal successors, (15520), 40 states have internal predecessors, (15520), 0 states have call successors, (0), 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 02:16:22,094 INFO L175 Difference]: Start difference. First operand has 123 places, 167 transitions, 728 flow. Second operand 39 states and 7357 transitions. [2022-11-23 02:16:22,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 660 transitions, 3874 flow [2022-11-23 02:16:22,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 660 transitions, 3784 flow, removed 32 selfloop flow, removed 4 redundant places. [2022-11-23 02:16:22,423 INFO L231 Difference]: Finished difference. Result has 169 places, 312 transitions, 2000 flow [2022-11-23 02:16:22,423 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=388, PETRI_DIFFERENCE_MINUEND_FLOW=706, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=2000, PETRI_PLACES=169, PETRI_TRANSITIONS=312} [2022-11-23 02:16:22,424 INFO L288 CegarLoopForPetriNet]: 82 programPoint places, 87 predicate places. [2022-11-23 02:16:22,424 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 312 transitions, 2000 flow [2022-11-23 02:16:22,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 177.5) internal successors, (3195), 18 states have internal predecessors, (3195), 0 states have call successors, (0), 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 02:16:22,425 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:16:22,426 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] [2022-11-23 02:16:22,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 02:16:22,426 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-23 02:16:22,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:16:22,426 INFO L85 PathProgramCache]: Analyzing trace with hash 628204805, now seen corresponding path program 3 times [2022-11-23 02:16:22,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:16:22,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819597375] [2022-11-23 02:16:22,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:16:22,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:16:22,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:16:23,767 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 02:16:23,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:16:23,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819597375] [2022-11-23 02:16:23,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819597375] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:16:23,768 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:16:23,768 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-23 02:16:23,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750692952] [2022-11-23 02:16:23,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:16:23,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-23 02:16:23,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:16:23,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-23 02:16:23,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=376, Unknown=0, NotChecked=0, Total=420 [2022-11-23 02:16:24,747 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 388 [2022-11-23 02:16:24,750 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 312 transitions, 2000 flow. Second operand has 21 states, 21 states have (on average 176.14285714285714) internal successors, (3699), 21 states have internal predecessors, (3699), 0 states have call successors, (0), 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 02:16:24,750 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:16:24,750 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 388 [2022-11-23 02:16:24,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:16:34,801 INFO L130 PetriNetUnfolder]: 37717/51244 cut-off events. [2022-11-23 02:16:34,801 INFO L131 PetriNetUnfolder]: For 150901/150915 co-relation queries the response was YES. [2022-11-23 02:16:35,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 191287 conditions, 51244 events. 37717/51244 cut-off events. For 150901/150915 co-relation queries the response was YES. Maximal size of possible extension queue 869. Compared 275961 event pairs, 7940 based on Foata normal form. 15/49291 useless extension candidates. Maximal degree in co-relation 191253. Up to 38749 conditions per place. [2022-11-23 02:16:35,222 INFO L137 encePairwiseOnDemand]: 368/388 looper letters, 670 selfloop transitions, 228 changer transitions 33/949 dead transitions. [2022-11-23 02:16:35,222 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 949 transitions, 7048 flow [2022-11-23 02:16:35,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-11-23 02:16:35,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2022-11-23 02:16:35,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 10218 transitions. [2022-11-23 02:16:35,239 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4788191190253046 [2022-11-23 02:16:35,240 INFO L72 ComplementDD]: Start complementDD. Operand 55 states and 10218 transitions. [2022-11-23 02:16:35,240 INFO L73 IsDeterministic]: Start isDeterministic. Operand 55 states and 10218 transitions. [2022-11-23 02:16:35,481 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:16:35,481 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 55 states and 10218 transitions. [2022-11-23 02:16:35,518 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 56 states, 55 states have (on average 185.78181818181818) internal successors, (10218), 55 states have internal predecessors, (10218), 0 states have call successors, (0), 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 02:16:35,556 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 56 states, 56 states have (on average 388.0) internal successors, (21728), 56 states have internal predecessors, (21728), 0 states have call successors, (0), 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 02:16:35,563 INFO L81 ComplementDD]: Finished complementDD. Result has 56 states, 56 states have (on average 388.0) internal successors, (21728), 56 states have internal predecessors, (21728), 0 states have call successors, (0), 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 02:16:35,564 INFO L175 Difference]: Start difference. First operand has 169 places, 312 transitions, 2000 flow. Second operand 55 states and 10218 transitions. [2022-11-23 02:16:35,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 949 transitions, 7048 flow [2022-11-23 02:16:37,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 949 transitions, 6735 flow, removed 113 selfloop flow, removed 4 redundant places. [2022-11-23 02:16:37,940 INFO L231 Difference]: Finished difference. Result has 238 places, 537 transitions, 4461 flow [2022-11-23 02:16:37,941 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=388, PETRI_DIFFERENCE_MINUEND_FLOW=1777, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=55, PETRI_FLOW=4461, PETRI_PLACES=238, PETRI_TRANSITIONS=537} [2022-11-23 02:16:37,942 INFO L288 CegarLoopForPetriNet]: 82 programPoint places, 156 predicate places. [2022-11-23 02:16:37,942 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 537 transitions, 4461 flow [2022-11-23 02:16:37,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 176.14285714285714) internal successors, (3699), 21 states have internal predecessors, (3699), 0 states have call successors, (0), 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 02:16:37,943 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:16:37,943 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] [2022-11-23 02:16:37,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-23 02:16:37,944 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-23 02:16:37,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:16:37,944 INFO L85 PathProgramCache]: Analyzing trace with hash -71063233, now seen corresponding path program 4 times [2022-11-23 02:16:37,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:16:37,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598706891] [2022-11-23 02:16:37,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:16:37,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:16:38,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:16:39,075 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 02:16:39,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:16:39,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598706891] [2022-11-23 02:16:39,075 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598706891] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:16:39,076 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:16:39,076 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-11-23 02:16:39,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143664157] [2022-11-23 02:16:39,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:16:39,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-23 02:16:39,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:16:39,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-23 02:16:39,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2022-11-23 02:16:40,001 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 388 [2022-11-23 02:16:40,004 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 537 transitions, 4461 flow. Second operand has 19 states, 19 states have (on average 177.3684210526316) internal successors, (3370), 19 states have internal predecessors, (3370), 0 states have call successors, (0), 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 02:16:40,004 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:16:40,004 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 388 [2022-11-23 02:16:40,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand