./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/mix027_power.oepc_pso.oepc_rmo.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cf1a7837 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_e064ceb0-054a-4ade-b2b5-4e1905bda263/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e064ceb0-054a-4ade-b2b5-4e1905bda263/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e064ceb0-054a-4ade-b2b5-4e1905bda263/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e064ceb0-054a-4ade-b2b5-4e1905bda263/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/mix027_power.oepc_pso.oepc_rmo.oepc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e064ceb0-054a-4ade-b2b5-4e1905bda263/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e064ceb0-054a-4ade-b2b5-4e1905bda263/bin/uautomizer-verify-uTZkv6EMXl --witnessprinter.witness.filename witness --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 d8f535cb798ce58a79ec2e9a728d4e5d884025e215c7cfd9880fc53267dd5a20 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:11:05,282 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:11:05,401 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e064ceb0-054a-4ade-b2b5-4e1905bda263/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-12 02:11:05,411 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:11:05,412 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:11:05,450 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:11:05,451 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:11:05,451 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:11:05,452 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:11:05,458 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:11:05,459 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:11:05,460 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:11:05,460 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:11:05,462 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:11:05,463 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:11:05,463 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:11:05,464 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:11:05,464 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:11:05,465 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:11:05,465 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:11:05,466 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:11:05,466 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:11:05,467 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:11:05,467 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:11:05,468 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:11:05,469 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:11:05,469 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:11:05,470 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:11:05,470 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:11:05,470 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:11:05,472 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:11:05,472 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:11:05,472 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:11:05,473 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:11:05,473 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:11:05,473 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:11:05,473 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:11:05,474 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:11:05,474 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:11:05,474 INFO L153 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_e064ceb0-054a-4ade-b2b5-4e1905bda263/bin/uautomizer-verify-uTZkv6EMXl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e064ceb0-054a-4ade-b2b5-4e1905bda263/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d8f535cb798ce58a79ec2e9a728d4e5d884025e215c7cfd9880fc53267dd5a20 [2023-11-12 02:11:05,745 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:11:05,768 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:11:05,770 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:11:05,772 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:11:05,772 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:11:05,774 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e064ceb0-054a-4ade-b2b5-4e1905bda263/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/pthread-wmm/mix027_power.oepc_pso.oepc_rmo.oepc.i [2023-11-12 02:11:08,783 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:11:09,221 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:11:09,222 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e064ceb0-054a-4ade-b2b5-4e1905bda263/sv-benchmarks/c/pthread-wmm/mix027_power.oepc_pso.oepc_rmo.oepc.i [2023-11-12 02:11:09,240 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e064ceb0-054a-4ade-b2b5-4e1905bda263/bin/uautomizer-verify-uTZkv6EMXl/data/e826dcbe3/5982836159cb48be9d7e074c26e821fb/FLAG505ae7d22 [2023-11-12 02:11:09,255 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e064ceb0-054a-4ade-b2b5-4e1905bda263/bin/uautomizer-verify-uTZkv6EMXl/data/e826dcbe3/5982836159cb48be9d7e074c26e821fb [2023-11-12 02:11:09,258 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:11:09,260 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:11:09,261 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:11:09,262 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:11:09,267 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:11:09,268 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:11:09" (1/1) ... [2023-11-12 02:11:09,269 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bd197dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:11:09, skipping insertion in model container [2023-11-12 02:11:09,270 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:11:09" (1/1) ... [2023-11-12 02:11:09,347 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:11:09,507 WARN L240 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_e064ceb0-054a-4ade-b2b5-4e1905bda263/sv-benchmarks/c/pthread-wmm/mix027_power.oepc_pso.oepc_rmo.oepc.i[969,982] [2023-11-12 02:11:09,753 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:11:09,766 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:11:09,780 WARN L240 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_e064ceb0-054a-4ade-b2b5-4e1905bda263/sv-benchmarks/c/pthread-wmm/mix027_power.oepc_pso.oepc_rmo.oepc.i[969,982] [2023-11-12 02:11:09,862 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:11:09,917 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:11:09,918 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:11:09,926 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:11:09,927 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:11:09 WrapperNode [2023-11-12 02:11:09,927 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:11:09,929 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:11:09,929 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:11:09,929 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:11:09,938 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:11:09" (1/1) ... [2023-11-12 02:11:09,960 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:11:09" (1/1) ... [2023-11-12 02:11:10,018 INFO L138 Inliner]: procedures = 177, calls = 69, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 143 [2023-11-12 02:11:10,019 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:11:10,020 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:11:10,020 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:11:10,020 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:11:10,031 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:11:09" (1/1) ... [2023-11-12 02:11:10,032 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:11:09" (1/1) ... [2023-11-12 02:11:10,036 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:11:09" (1/1) ... [2023-11-12 02:11:10,037 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:11:09" (1/1) ... [2023-11-12 02:11:10,047 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:11:09" (1/1) ... [2023-11-12 02:11:10,050 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:11:09" (1/1) ... [2023-11-12 02:11:10,063 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:11:09" (1/1) ... [2023-11-12 02:11:10,065 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:11:09" (1/1) ... [2023-11-12 02:11:10,070 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:11:10,071 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:11:10,078 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:11:10,078 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:11:10,079 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:11:09" (1/1) ... [2023-11-12 02:11:10,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:11:10,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e064ceb0-054a-4ade-b2b5-4e1905bda263/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:11:10,127 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e064ceb0-054a-4ade-b2b5-4e1905bda263/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:11:10,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e064ceb0-054a-4ade-b2b5-4e1905bda263/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:11:10,182 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 02:11:10,182 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-12 02:11:10,183 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:11:10,183 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 02:11:10,183 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 02:11:10,183 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-12 02:11:10,183 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-12 02:11:10,184 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-12 02:11:10,184 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-12 02:11:10,184 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-12 02:11:10,186 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-12 02:11:10,186 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-11-12 02:11:10,187 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-11-12 02:11:10,187 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:11:10,187 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-12 02:11:10,187 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:11:10,188 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:11:10,189 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-12 02:11:10,394 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:11:10,396 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:11:10,866 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:11:11,103 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:11:11,103 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-12 02:11:11,110 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:11:11 BoogieIcfgContainer [2023-11-12 02:11:11,110 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:11:11,113 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:11:11,113 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:11:11,117 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:11:11,118 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:11:09" (1/3) ... [2023-11-12 02:11:11,119 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@303e6b50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:11:11, skipping insertion in model container [2023-11-12 02:11:11,119 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:11:09" (2/3) ... [2023-11-12 02:11:11,121 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@303e6b50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:11:11, skipping insertion in model container [2023-11-12 02:11:11,122 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:11:11" (3/3) ... [2023-11-12 02:11:11,124 INFO L112 eAbstractionObserver]: Analyzing ICFG mix027_power.oepc_pso.oepc_rmo.oepc.i [2023-11-12 02:11:11,134 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-12 02:11:11,145 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:11:11,145 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-12 02:11:11,146 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-12 02:11:11,230 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-12 02:11:11,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 144 places, 133 transitions, 282 flow [2023-11-12 02:11:11,371 INFO L124 PetriNetUnfolderBase]: 2/129 cut-off events. [2023-11-12 02:11:11,372 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:11:11,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142 conditions, 129 events. 2/129 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 70 event pairs, 0 based on Foata normal form. 0/125 useless extension candidates. Maximal degree in co-relation 92. Up to 2 conditions per place. [2023-11-12 02:11:11,379 INFO L82 GeneralOperation]: Start removeDead. Operand has 144 places, 133 transitions, 282 flow [2023-11-12 02:11:11,389 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 140 places, 129 transitions, 270 flow [2023-11-12 02:11:11,394 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-12 02:11:11,413 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 140 places, 129 transitions, 270 flow [2023-11-12 02:11:11,417 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 140 places, 129 transitions, 270 flow [2023-11-12 02:11:11,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 140 places, 129 transitions, 270 flow [2023-11-12 02:11:11,496 INFO L124 PetriNetUnfolderBase]: 2/129 cut-off events. [2023-11-12 02:11:11,496 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:11:11,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142 conditions, 129 events. 2/129 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 70 event pairs, 0 based on Foata normal form. 0/125 useless extension candidates. Maximal degree in co-relation 92. Up to 2 conditions per place. [2023-11-12 02:11:11,503 INFO L119 LiptonReduction]: Number of co-enabled transitions 3404 [2023-11-12 02:11:16,714 INFO L134 LiptonReduction]: Checked pairs total: 9615 [2023-11-12 02:11:16,714 INFO L136 LiptonReduction]: Total number of compositions: 110 [2023-11-12 02:11:16,746 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:11:16,753 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=LoopHeads, 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;@66fd71db, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:11:16,753 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-11-12 02:11:16,756 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-12 02:11:16,756 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-11-12 02:11:16,756 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:11:16,757 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:11:16,758 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-12 02:11:16,759 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-12 02:11:16,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:11:16,764 INFO L85 PathProgramCache]: Analyzing trace with hash 558429, now seen corresponding path program 1 times [2023-11-12 02:11:16,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:11:16,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745103476] [2023-11-12 02:11:16,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:11:16,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:11:16,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:11:17,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:11:17,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:11:17,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745103476] [2023-11-12 02:11:17,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745103476] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:11:17,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:11:17,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:11:17,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434168186] [2023-11-12 02:11:17,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:11:17,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:11:17,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:11:17,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:11:17,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:11:17,267 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 243 [2023-11-12 02:11:17,271 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 31 transitions, 74 flow. Second operand has 3 states, 3 states have (on average 118.0) internal successors, (354), 3 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:11:17,271 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:11:17,271 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 243 [2023-11-12 02:11:17,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:11:18,771 INFO L124 PetriNetUnfolderBase]: 4903/6758 cut-off events. [2023-11-12 02:11:18,771 INFO L125 PetriNetUnfolderBase]: For 79/79 co-relation queries the response was YES. [2023-11-12 02:11:18,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13606 conditions, 6758 events. 4903/6758 cut-off events. For 79/79 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 32805 event pairs, 2535 based on Foata normal form. 0/6422 useless extension candidates. Maximal degree in co-relation 13594. Up to 5335 conditions per place. [2023-11-12 02:11:18,836 INFO L140 encePairwiseOnDemand]: 239/243 looper letters, 41 selfloop transitions, 2 changer transitions 2/49 dead transitions. [2023-11-12 02:11:18,837 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 49 transitions, 209 flow [2023-11-12 02:11:18,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:11:18,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:11:18,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 399 transitions. [2023-11-12 02:11:18,859 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5473251028806584 [2023-11-12 02:11:18,860 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 399 transitions. [2023-11-12 02:11:18,861 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 399 transitions. [2023-11-12 02:11:18,865 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:11:18,867 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 399 transitions. [2023-11-12 02:11:18,875 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 133.0) internal successors, (399), 3 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:11:18,883 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 243.0) internal successors, (972), 4 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:11:18,884 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 243.0) internal successors, (972), 4 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:11:18,887 INFO L175 Difference]: Start difference. First operand has 43 places, 31 transitions, 74 flow. Second operand 3 states and 399 transitions. [2023-11-12 02:11:18,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 49 transitions, 209 flow [2023-11-12 02:11:18,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 49 transitions, 202 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-12 02:11:18,896 INFO L231 Difference]: Finished difference. Result has 40 places, 28 transitions, 68 flow [2023-11-12 02:11:18,898 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=243, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=68, PETRI_PLACES=40, PETRI_TRANSITIONS=28} [2023-11-12 02:11:18,902 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -3 predicate places. [2023-11-12 02:11:18,903 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 28 transitions, 68 flow [2023-11-12 02:11:18,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 118.0) internal successors, (354), 3 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:11:18,903 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:11:18,904 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:11:18,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 02:11:18,905 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-12 02:11:18,914 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:11:18,915 INFO L85 PathProgramCache]: Analyzing trace with hash -2139919799, now seen corresponding path program 1 times [2023-11-12 02:11:18,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:11:18,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255570484] [2023-11-12 02:11:18,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:11:18,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:11:18,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:11:19,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:11:19,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:11:19,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255570484] [2023-11-12 02:11:19,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255570484] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:11:19,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:11:19,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:11:19,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600739639] [2023-11-12 02:11:19,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:11:19,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:11:19,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:11:19,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:11:19,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:11:19,363 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 243 [2023-11-12 02:11:19,364 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 28 transitions, 68 flow. Second operand has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:11:19,364 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:11:19,365 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 243 [2023-11-12 02:11:19,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:11:22,899 INFO L124 PetriNetUnfolderBase]: 16407/22321 cut-off events. [2023-11-12 02:11:22,899 INFO L125 PetriNetUnfolderBase]: For 1028/1028 co-relation queries the response was YES. [2023-11-12 02:11:22,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46179 conditions, 22321 events. 16407/22321 cut-off events. For 1028/1028 co-relation queries the response was YES. Maximal size of possible extension queue 731. Compared 117924 event pairs, 5637 based on Foata normal form. 634/22955 useless extension candidates. Maximal degree in co-relation 46169. Up to 13398 conditions per place. [2023-11-12 02:11:23,064 INFO L140 encePairwiseOnDemand]: 234/243 looper letters, 43 selfloop transitions, 8 changer transitions 0/51 dead transitions. [2023-11-12 02:11:23,064 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 51 transitions, 222 flow [2023-11-12 02:11:23,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:11:23,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:11:23,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 373 transitions. [2023-11-12 02:11:23,067 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5116598079561042 [2023-11-12 02:11:23,067 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 373 transitions. [2023-11-12 02:11:23,067 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 373 transitions. [2023-11-12 02:11:23,068 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:11:23,068 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 373 transitions. [2023-11-12 02:11:23,069 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 124.33333333333333) internal successors, (373), 3 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:11:23,072 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 243.0) internal successors, (972), 4 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:11:23,073 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 243.0) internal successors, (972), 4 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:11:23,073 INFO L175 Difference]: Start difference. First operand has 40 places, 28 transitions, 68 flow. Second operand 3 states and 373 transitions. [2023-11-12 02:11:23,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 51 transitions, 222 flow [2023-11-12 02:11:23,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 51 transitions, 216 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:11:23,076 INFO L231 Difference]: Finished difference. Result has 41 places, 35 transitions, 126 flow [2023-11-12 02:11:23,077 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=243, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=126, PETRI_PLACES=41, PETRI_TRANSITIONS=35} [2023-11-12 02:11:23,078 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -2 predicate places. [2023-11-12 02:11:23,078 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 35 transitions, 126 flow [2023-11-12 02:11:23,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:11:23,079 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:11:23,079 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:11:23,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 02:11:23,080 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-12 02:11:23,080 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:11:23,080 INFO L85 PathProgramCache]: Analyzing trace with hash -1913006504, now seen corresponding path program 1 times [2023-11-12 02:11:23,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:11:23,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000761802] [2023-11-12 02:11:23,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:11:23,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:11:23,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:11:23,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:11:23,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:11:23,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000761802] [2023-11-12 02:11:23,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000761802] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:11:23,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:11:23,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:11:23,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134244625] [2023-11-12 02:11:23,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:11:23,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:11:23,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:11:23,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:11:23,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:11:23,399 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 243 [2023-11-12 02:11:23,400 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 35 transitions, 126 flow. Second operand has 4 states, 4 states have (on average 110.0) internal successors, (440), 4 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:11:23,401 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:11:23,401 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 243 [2023-11-12 02:11:23,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:11:26,916 INFO L124 PetriNetUnfolderBase]: 16149/21975 cut-off events. [2023-11-12 02:11:26,917 INFO L125 PetriNetUnfolderBase]: For 8417/8417 co-relation queries the response was YES. [2023-11-12 02:11:26,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55465 conditions, 21975 events. 16149/21975 cut-off events. For 8417/8417 co-relation queries the response was YES. Maximal size of possible extension queue 715. Compared 114575 event pairs, 1334 based on Foata normal form. 40/22015 useless extension candidates. Maximal degree in co-relation 55453. Up to 12464 conditions per place. [2023-11-12 02:11:27,077 INFO L140 encePairwiseOnDemand]: 234/243 looper letters, 56 selfloop transitions, 12 changer transitions 0/68 dead transitions. [2023-11-12 02:11:27,078 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 68 transitions, 360 flow [2023-11-12 02:11:27,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:11:27,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-12 02:11:27,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 493 transitions. [2023-11-12 02:11:27,081 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.507201646090535 [2023-11-12 02:11:27,081 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 493 transitions. [2023-11-12 02:11:27,082 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 493 transitions. [2023-11-12 02:11:27,082 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:11:27,082 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 493 transitions. [2023-11-12 02:11:27,084 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 123.25) internal successors, (493), 4 states have internal predecessors, (493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:11:27,087 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 243.0) internal successors, (1215), 5 states have internal predecessors, (1215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:11:27,088 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 243.0) internal successors, (1215), 5 states have internal predecessors, (1215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:11:27,089 INFO L175 Difference]: Start difference. First operand has 41 places, 35 transitions, 126 flow. Second operand 4 states and 493 transitions. [2023-11-12 02:11:27,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 68 transitions, 360 flow [2023-11-12 02:11:27,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 68 transitions, 334 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:11:27,158 INFO L231 Difference]: Finished difference. Result has 45 places, 42 transitions, 198 flow [2023-11-12 02:11:27,159 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=243, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=198, PETRI_PLACES=45, PETRI_TRANSITIONS=42} [2023-11-12 02:11:27,160 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 2 predicate places. [2023-11-12 02:11:27,164 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 42 transitions, 198 flow [2023-11-12 02:11:27,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 110.0) internal successors, (440), 4 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:11:27,165 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:11:27,165 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:11:27,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 02:11:27,165 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-12 02:11:27,166 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:11:27,166 INFO L85 PathProgramCache]: Analyzing trace with hash -1913006380, now seen corresponding path program 1 times [2023-11-12 02:11:27,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:11:27,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701135625] [2023-11-12 02:11:27,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:11:27,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:11:27,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:11:27,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:11:27,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:11:27,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701135625] [2023-11-12 02:11:27,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701135625] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:11:27,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:11:27,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:11:27,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430174796] [2023-11-12 02:11:27,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:11:27,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:11:27,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:11:27,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:11:27,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:11:27,446 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 243 [2023-11-12 02:11:27,447 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 42 transitions, 198 flow. Second operand has 4 states, 4 states have (on average 110.0) internal successors, (440), 4 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:11:27,447 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:11:27,447 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 243 [2023-11-12 02:11:27,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:11:30,306 INFO L124 PetriNetUnfolderBase]: 15821/21537 cut-off events. [2023-11-12 02:11:30,308 INFO L125 PetriNetUnfolderBase]: For 17578/17578 co-relation queries the response was YES. [2023-11-12 02:11:30,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59029 conditions, 21537 events. 15821/21537 cut-off events. For 17578/17578 co-relation queries the response was YES. Maximal size of possible extension queue 696. Compared 113401 event pairs, 3113 based on Foata normal form. 50/21587 useless extension candidates. Maximal degree in co-relation 59014. Up to 12454 conditions per place. [2023-11-12 02:11:30,444 INFO L140 encePairwiseOnDemand]: 234/243 looper letters, 67 selfloop transitions, 18 changer transitions 0/85 dead transitions. [2023-11-12 02:11:30,444 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 85 transitions, 524 flow [2023-11-12 02:11:30,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:11:30,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-12 02:11:30,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 500 transitions. [2023-11-12 02:11:30,448 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.51440329218107 [2023-11-12 02:11:30,448 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 500 transitions. [2023-11-12 02:11:30,448 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 500 transitions. [2023-11-12 02:11:30,449 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:11:30,449 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 500 transitions. [2023-11-12 02:11:30,451 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 125.0) internal successors, (500), 4 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:11:30,453 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 243.0) internal successors, (1215), 5 states have internal predecessors, (1215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:11:30,455 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 243.0) internal successors, (1215), 5 states have internal predecessors, (1215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:11:30,455 INFO L175 Difference]: Start difference. First operand has 45 places, 42 transitions, 198 flow. Second operand 4 states and 500 transitions. [2023-11-12 02:11:30,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 85 transitions, 524 flow [2023-11-12 02:11:30,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 85 transitions, 524 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-12 02:11:30,524 INFO L231 Difference]: Finished difference. Result has 51 places, 52 transitions, 356 flow [2023-11-12 02:11:30,524 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=243, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=356, PETRI_PLACES=51, PETRI_TRANSITIONS=52} [2023-11-12 02:11:30,526 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 8 predicate places. [2023-11-12 02:11:30,527 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 52 transitions, 356 flow [2023-11-12 02:11:30,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 110.0) internal successors, (440), 4 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:11:30,527 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:11:30,528 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:11:30,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 02:11:30,528 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-12 02:11:30,528 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:11:30,529 INFO L85 PathProgramCache]: Analyzing trace with hash 826338469, now seen corresponding path program 1 times [2023-11-12 02:11:30,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:11:30,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542038476] [2023-11-12 02:11:30,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:11:30,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:11:30,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:11:30,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:11:30,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:11:30,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542038476] [2023-11-12 02:11:30,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542038476] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:11:30,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:11:30,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:11:30,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302972003] [2023-11-12 02:11:30,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:11:30,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:11:30,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:11:30,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:11:30,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:11:30,772 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 243 [2023-11-12 02:11:30,773 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 52 transitions, 356 flow. Second operand has 4 states, 4 states have (on average 110.25) internal successors, (441), 4 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:11:30,773 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:11:30,773 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 243 [2023-11-12 02:11:30,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:11:33,418 INFO L124 PetriNetUnfolderBase]: 14954/20366 cut-off events. [2023-11-12 02:11:33,418 INFO L125 PetriNetUnfolderBase]: For 41801/41801 co-relation queries the response was YES. [2023-11-12 02:11:33,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63084 conditions, 20366 events. 14954/20366 cut-off events. For 41801/41801 co-relation queries the response was YES. Maximal size of possible extension queue 636. Compared 103689 event pairs, 3864 based on Foata normal form. 175/20541 useless extension candidates. Maximal degree in co-relation 63064. Up to 8569 conditions per place. [2023-11-12 02:11:33,570 INFO L140 encePairwiseOnDemand]: 235/243 looper letters, 74 selfloop transitions, 13 changer transitions 0/87 dead transitions. [2023-11-12 02:11:33,571 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 87 transitions, 694 flow [2023-11-12 02:11:33,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:11:33,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-12 02:11:33,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 488 transitions. [2023-11-12 02:11:33,574 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5020576131687243 [2023-11-12 02:11:33,574 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 488 transitions. [2023-11-12 02:11:33,575 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 488 transitions. [2023-11-12 02:11:33,575 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:11:33,575 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 488 transitions. [2023-11-12 02:11:33,577 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 122.0) internal successors, (488), 4 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:11:33,581 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 243.0) internal successors, (1215), 5 states have internal predecessors, (1215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:11:33,582 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 243.0) internal successors, (1215), 5 states have internal predecessors, (1215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:11:33,582 INFO L175 Difference]: Start difference. First operand has 51 places, 52 transitions, 356 flow. Second operand 4 states and 488 transitions. [2023-11-12 02:11:33,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 87 transitions, 694 flow [2023-11-12 02:11:33,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 87 transitions, 694 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-12 02:11:33,680 INFO L231 Difference]: Finished difference. Result has 57 places, 59 transitions, 506 flow [2023-11-12 02:11:33,681 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=243, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=506, PETRI_PLACES=57, PETRI_TRANSITIONS=59} [2023-11-12 02:11:33,684 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 14 predicate places. [2023-11-12 02:11:33,684 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 59 transitions, 506 flow [2023-11-12 02:11:33,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 110.25) internal successors, (441), 4 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:11:33,686 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:11:33,686 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:11:33,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 02:11:33,686 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-12 02:11:33,687 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:11:33,687 INFO L85 PathProgramCache]: Analyzing trace with hash -138306268, now seen corresponding path program 1 times [2023-11-12 02:11:33,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:11:33,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409363154] [2023-11-12 02:11:33,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:11:33,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:11:33,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:11:33,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:11:33,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:11:33,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409363154] [2023-11-12 02:11:33,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409363154] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:11:33,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:11:33,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:11:33,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982668] [2023-11-12 02:11:33,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:11:33,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:11:33,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:11:33,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:11:33,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:11:33,964 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 243 [2023-11-12 02:11:33,966 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 59 transitions, 506 flow. Second operand has 4 states, 4 states have (on average 111.25) internal successors, (445), 4 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:11:33,966 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:11:33,966 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 243 [2023-11-12 02:11:33,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:11:36,230 INFO L124 PetriNetUnfolderBase]: 9246/13678 cut-off events. [2023-11-12 02:11:36,231 INFO L125 PetriNetUnfolderBase]: For 34538/36493 co-relation queries the response was YES. [2023-11-12 02:11:36,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40733 conditions, 13678 events. 9246/13678 cut-off events. For 34538/36493 co-relation queries the response was YES. Maximal size of possible extension queue 714. Compared 86057 event pairs, 1493 based on Foata normal form. 1435/14790 useless extension candidates. Maximal degree in co-relation 40708. Up to 8353 conditions per place. [2023-11-12 02:11:36,333 INFO L140 encePairwiseOnDemand]: 236/243 looper letters, 112 selfloop transitions, 10 changer transitions 0/143 dead transitions. [2023-11-12 02:11:36,333 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 143 transitions, 1348 flow [2023-11-12 02:11:36,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:11:36,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-12 02:11:36,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 612 transitions. [2023-11-12 02:11:36,337 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5037037037037037 [2023-11-12 02:11:36,337 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 612 transitions. [2023-11-12 02:11:36,337 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 612 transitions. [2023-11-12 02:11:36,339 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:11:36,339 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 612 transitions. [2023-11-12 02:11:36,341 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 122.4) internal successors, (612), 5 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:11:36,344 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 243.0) internal successors, (1458), 6 states have internal predecessors, (1458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:11:36,345 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 243.0) internal successors, (1458), 6 states have internal predecessors, (1458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:11:36,345 INFO L175 Difference]: Start difference. First operand has 57 places, 59 transitions, 506 flow. Second operand 5 states and 612 transitions. [2023-11-12 02:11:36,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 143 transitions, 1348 flow [2023-11-12 02:11:36,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 143 transitions, 1344 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:11:36,396 INFO L231 Difference]: Finished difference. Result has 63 places, 68 transitions, 577 flow [2023-11-12 02:11:36,396 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=243, PETRI_DIFFERENCE_MINUEND_FLOW=502, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=577, PETRI_PLACES=63, PETRI_TRANSITIONS=68} [2023-11-12 02:11:36,399 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 20 predicate places. [2023-11-12 02:11:36,399 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 68 transitions, 577 flow [2023-11-12 02:11:36,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 111.25) internal successors, (445), 4 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:11:36,400 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:11:36,400 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:11:36,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-12 02:11:36,400 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-12 02:11:36,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:11:36,401 INFO L85 PathProgramCache]: Analyzing trace with hash -1421613376, now seen corresponding path program 1 times [2023-11-12 02:11:36,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:11:36,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142926355] [2023-11-12 02:11:36,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:11:36,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:11:36,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:11:36,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:11:36,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:11:36,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142926355] [2023-11-12 02:11:36,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142926355] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:11:36,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:11:36,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:11:36,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446803155] [2023-11-12 02:11:36,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:11:36,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:11:36,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:11:36,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:11:36,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:11:36,715 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 243 [2023-11-12 02:11:36,716 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 68 transitions, 577 flow. Second operand has 5 states, 5 states have (on average 111.2) internal successors, (556), 5 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:11:36,716 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:11:36,716 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 243 [2023-11-12 02:11:36,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:11:38,252 INFO L124 PetriNetUnfolderBase]: 7395/11243 cut-off events. [2023-11-12 02:11:38,252 INFO L125 PetriNetUnfolderBase]: For 31609/33151 co-relation queries the response was YES. [2023-11-12 02:11:38,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40628 conditions, 11243 events. 7395/11243 cut-off events. For 31609/33151 co-relation queries the response was YES. Maximal size of possible extension queue 595. Compared 72190 event pairs, 791 based on Foata normal form. 1002/11975 useless extension candidates. Maximal degree in co-relation 40599. Up to 3380 conditions per place. [2023-11-12 02:11:38,342 INFO L140 encePairwiseOnDemand]: 236/243 looper letters, 150 selfloop transitions, 19 changer transitions 0/190 dead transitions. [2023-11-12 02:11:38,343 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 190 transitions, 1835 flow [2023-11-12 02:11:38,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:11:38,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-12 02:11:38,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 859 transitions. [2023-11-12 02:11:38,352 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5049970605526161 [2023-11-12 02:11:38,352 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 859 transitions. [2023-11-12 02:11:38,352 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 859 transitions. [2023-11-12 02:11:38,355 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:11:38,356 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 859 transitions. [2023-11-12 02:11:38,360 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 122.71428571428571) internal successors, (859), 7 states have internal predecessors, (859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:11:38,370 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 243.0) internal successors, (1944), 8 states have internal predecessors, (1944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:11:38,372 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 243.0) internal successors, (1944), 8 states have internal predecessors, (1944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:11:38,372 INFO L175 Difference]: Start difference. First operand has 63 places, 68 transitions, 577 flow. Second operand 7 states and 859 transitions. [2023-11-12 02:11:38,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 190 transitions, 1835 flow [2023-11-12 02:11:38,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 190 transitions, 1830 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:11:38,486 INFO L231 Difference]: Finished difference. Result has 71 places, 77 transitions, 706 flow [2023-11-12 02:11:38,486 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=243, PETRI_DIFFERENCE_MINUEND_FLOW=572, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=706, PETRI_PLACES=71, PETRI_TRANSITIONS=77} [2023-11-12 02:11:38,487 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 28 predicate places. [2023-11-12 02:11:38,487 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 77 transitions, 706 flow [2023-11-12 02:11:38,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 111.2) internal successors, (556), 5 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:11:38,488 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:11:38,488 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:11:38,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-12 02:11:38,488 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-12 02:11:38,489 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:11:38,489 INFO L85 PathProgramCache]: Analyzing trace with hash -1651484135, now seen corresponding path program 1 times [2023-11-12 02:11:38,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:11:38,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684788248] [2023-11-12 02:11:38,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:11:38,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:11:38,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:11:38,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:11:38,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:11:38,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684788248] [2023-11-12 02:11:38,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684788248] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:11:38,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:11:38,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:11:38,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707734168] [2023-11-12 02:11:38,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:11:38,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:11:38,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:11:38,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:11:38,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:11:38,785 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 243 [2023-11-12 02:11:38,786 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 77 transitions, 706 flow. Second operand has 4 states, 4 states have (on average 112.0) internal successors, (448), 4 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:11:38,786 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:11:38,786 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 243 [2023-11-12 02:11:38,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:11:41,705 INFO L124 PetriNetUnfolderBase]: 14776/21460 cut-off events. [2023-11-12 02:11:41,705 INFO L125 PetriNetUnfolderBase]: For 104260/104260 co-relation queries the response was YES. [2023-11-12 02:11:41,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95599 conditions, 21460 events. 14776/21460 cut-off events. For 104260/104260 co-relation queries the response was YES. Maximal size of possible extension queue 765. Compared 129555 event pairs, 3689 based on Foata normal form. 76/21536 useless extension candidates. Maximal degree in co-relation 95566. Up to 9826 conditions per place. [2023-11-12 02:11:41,858 INFO L140 encePairwiseOnDemand]: 234/243 looper letters, 93 selfloop transitions, 27 changer transitions 40/160 dead transitions. [2023-11-12 02:11:41,859 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 160 transitions, 1654 flow [2023-11-12 02:11:41,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:11:41,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-12 02:11:41,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 503 transitions. [2023-11-12 02:11:41,868 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5174897119341564 [2023-11-12 02:11:41,868 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 503 transitions. [2023-11-12 02:11:41,868 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 503 transitions. [2023-11-12 02:11:41,869 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:11:41,869 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 503 transitions. [2023-11-12 02:11:41,873 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 125.75) internal successors, (503), 4 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:11:41,876 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 243.0) internal successors, (1215), 5 states have internal predecessors, (1215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:11:41,877 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 243.0) internal successors, (1215), 5 states have internal predecessors, (1215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:11:41,877 INFO L175 Difference]: Start difference. First operand has 71 places, 77 transitions, 706 flow. Second operand 4 states and 503 transitions. [2023-11-12 02:11:41,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 160 transitions, 1654 flow [2023-11-12 02:11:44,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 160 transitions, 1508 flow, removed 51 selfloop flow, removed 3 redundant places. [2023-11-12 02:11:44,652 INFO L231 Difference]: Finished difference. Result has 74 places, 70 transitions, 765 flow [2023-11-12 02:11:44,653 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=243, PETRI_DIFFERENCE_MINUEND_FLOW=656, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=765, PETRI_PLACES=74, PETRI_TRANSITIONS=70} [2023-11-12 02:11:44,654 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 31 predicate places. [2023-11-12 02:11:44,654 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 70 transitions, 765 flow [2023-11-12 02:11:44,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 112.0) internal successors, (448), 4 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:11:44,655 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:11:44,655 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:11:44,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-12 02:11:44,655 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-12 02:11:44,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:11:44,656 INFO L85 PathProgramCache]: Analyzing trace with hash -2015810398, now seen corresponding path program 1 times [2023-11-12 02:11:44,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:11:44,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993466956] [2023-11-12 02:11:44,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:11:44,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:11:44,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:11:45,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:11:45,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:11:45,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993466956] [2023-11-12 02:11:45,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993466956] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:11:45,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:11:45,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:11:45,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712743479] [2023-11-12 02:11:45,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:11:45,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:11:45,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:11:45,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:11:45,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:11:45,095 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 243 [2023-11-12 02:11:45,097 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 70 transitions, 765 flow. Second operand has 6 states, 6 states have (on average 111.0) internal successors, (666), 6 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:11:45,097 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:11:45,097 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 243 [2023-11-12 02:11:45,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:11:46,515 INFO L124 PetriNetUnfolderBase]: 3951/6342 cut-off events. [2023-11-12 02:11:46,515 INFO L125 PetriNetUnfolderBase]: For 26565/27011 co-relation queries the response was YES. [2023-11-12 02:11:46,548 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24360 conditions, 6342 events. 3951/6342 cut-off events. For 26565/27011 co-relation queries the response was YES. Maximal size of possible extension queue 304. Compared 39723 event pairs, 802 based on Foata normal form. 439/6625 useless extension candidates. Maximal degree in co-relation 24324. Up to 2136 conditions per place. [2023-11-12 02:11:46,569 INFO L140 encePairwiseOnDemand]: 236/243 looper letters, 126 selfloop transitions, 18 changer transitions 16/182 dead transitions. [2023-11-12 02:11:46,570 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 182 transitions, 2085 flow [2023-11-12 02:11:46,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:11:46,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-12 02:11:46,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 860 transitions. [2023-11-12 02:11:46,575 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5055849500293945 [2023-11-12 02:11:46,575 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 860 transitions. [2023-11-12 02:11:46,575 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 860 transitions. [2023-11-12 02:11:46,576 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:11:46,577 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 860 transitions. [2023-11-12 02:11:46,580 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 122.85714285714286) internal successors, (860), 7 states have internal predecessors, (860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:11:46,584 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 243.0) internal successors, (1944), 8 states have internal predecessors, (1944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:11:46,585 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 243.0) internal successors, (1944), 8 states have internal predecessors, (1944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:11:46,585 INFO L175 Difference]: Start difference. First operand has 74 places, 70 transitions, 765 flow. Second operand 7 states and 860 transitions. [2023-11-12 02:11:46,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 182 transitions, 2085 flow [2023-11-12 02:11:46,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 182 transitions, 1968 flow, removed 25 selfloop flow, removed 4 redundant places. [2023-11-12 02:11:46,666 INFO L231 Difference]: Finished difference. Result has 75 places, 79 transitions, 858 flow [2023-11-12 02:11:46,666 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=243, PETRI_DIFFERENCE_MINUEND_FLOW=720, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=858, PETRI_PLACES=75, PETRI_TRANSITIONS=79} [2023-11-12 02:11:46,667 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 32 predicate places. [2023-11-12 02:11:46,667 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 79 transitions, 858 flow [2023-11-12 02:11:46,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 111.0) internal successors, (666), 6 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:11:46,668 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:11:46,668 INFO L208 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] [2023-11-12 02:11:46,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-12 02:11:46,668 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-12 02:11:46,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:11:46,669 INFO L85 PathProgramCache]: Analyzing trace with hash 1176012921, now seen corresponding path program 1 times [2023-11-12 02:11:46,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:11:46,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927545814] [2023-11-12 02:11:46,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:11:46,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:11:46,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:11:48,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:11:48,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:11:48,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927545814] [2023-11-12 02:11:48,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927545814] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:11:48,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:11:48,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:11:48,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066535111] [2023-11-12 02:11:48,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:11:48,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:11:48,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:11:48,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:11:48,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:11:48,135 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 243 [2023-11-12 02:11:48,136 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 79 transitions, 858 flow. Second operand has 7 states, 7 states have (on average 116.0) internal successors, (812), 7 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:11:48,137 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:11:48,137 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 243 [2023-11-12 02:11:48,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:11:50,331 INFO L124 PetriNetUnfolderBase]: 7076/11656 cut-off events. [2023-11-12 02:11:50,331 INFO L125 PetriNetUnfolderBase]: For 49216/49968 co-relation queries the response was YES. [2023-11-12 02:11:50,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49978 conditions, 11656 events. 7076/11656 cut-off events. For 49216/49968 co-relation queries the response was YES. Maximal size of possible extension queue 584. Compared 83493 event pairs, 1295 based on Foata normal form. 179/11668 useless extension candidates. Maximal degree in co-relation 49941. Up to 4977 conditions per place. [2023-11-12 02:11:50,439 INFO L140 encePairwiseOnDemand]: 234/243 looper letters, 163 selfloop transitions, 12 changer transitions 35/232 dead transitions. [2023-11-12 02:11:50,439 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 232 transitions, 2640 flow [2023-11-12 02:11:50,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:11:50,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-12 02:11:50,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 771 transitions. [2023-11-12 02:11:50,443 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5288065843621399 [2023-11-12 02:11:50,444 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 771 transitions. [2023-11-12 02:11:50,444 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 771 transitions. [2023-11-12 02:11:50,445 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:11:50,445 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 771 transitions. [2023-11-12 02:11:50,448 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 128.5) internal successors, (771), 6 states have internal predecessors, (771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:11:50,452 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 243.0) internal successors, (1701), 7 states have internal predecessors, (1701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:11:50,453 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 243.0) internal successors, (1701), 7 states have internal predecessors, (1701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:11:50,453 INFO L175 Difference]: Start difference. First operand has 75 places, 79 transitions, 858 flow. Second operand 6 states and 771 transitions. [2023-11-12 02:11:50,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 232 transitions, 2640 flow [2023-11-12 02:11:51,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 232 transitions, 2349 flow, removed 118 selfloop flow, removed 2 redundant places. [2023-11-12 02:11:51,156 INFO L231 Difference]: Finished difference. Result has 81 places, 89 transitions, 933 flow [2023-11-12 02:11:51,157 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=243, PETRI_DIFFERENCE_MINUEND_FLOW=793, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=933, PETRI_PLACES=81, PETRI_TRANSITIONS=89} [2023-11-12 02:11:51,158 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 38 predicate places. [2023-11-12 02:11:51,159 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 89 transitions, 933 flow [2023-11-12 02:11:51,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 116.0) internal successors, (812), 7 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:11:51,160 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:11:51,161 INFO L208 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] [2023-11-12 02:11:51,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-12 02:11:51,161 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-12 02:11:51,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:11:51,162 INFO L85 PathProgramCache]: Analyzing trace with hash 2075938758, now seen corresponding path program 1 times [2023-11-12 02:11:51,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:11:51,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999964851] [2023-11-12 02:11:51,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:11:51,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:11:51,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:11:51,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:11:51,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:11:51,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999964851] [2023-11-12 02:11:51,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999964851] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:11:51,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:11:51,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:11:51,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163423738] [2023-11-12 02:11:51,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:11:51,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:11:51,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:11:51,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:11:51,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:11:51,421 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 243 [2023-11-12 02:11:51,423 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 89 transitions, 933 flow. Second operand has 4 states, 4 states have (on average 119.5) internal successors, (478), 4 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:11:51,423 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:11:51,423 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 243 [2023-11-12 02:11:51,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:11:53,940 INFO L124 PetriNetUnfolderBase]: 11194/18492 cut-off events. [2023-11-12 02:11:53,940 INFO L125 PetriNetUnfolderBase]: For 81895/82904 co-relation queries the response was YES. [2023-11-12 02:11:54,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81188 conditions, 18492 events. 11194/18492 cut-off events. For 81895/82904 co-relation queries the response was YES. Maximal size of possible extension queue 895. Compared 141846 event pairs, 2169 based on Foata normal form. 238/18528 useless extension candidates. Maximal degree in co-relation 81147. Up to 8488 conditions per place. [2023-11-12 02:11:54,080 INFO L140 encePairwiseOnDemand]: 240/243 looper letters, 101 selfloop transitions, 2 changer transitions 55/176 dead transitions. [2023-11-12 02:11:54,081 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 176 transitions, 1956 flow [2023-11-12 02:11:54,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:11:54,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-12 02:11:54,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 513 transitions. [2023-11-12 02:11:54,084 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5277777777777778 [2023-11-12 02:11:54,084 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 513 transitions. [2023-11-12 02:11:54,084 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 513 transitions. [2023-11-12 02:11:54,085 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:11:54,085 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 513 transitions. [2023-11-12 02:11:54,087 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 128.25) internal successors, (513), 4 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:11:54,089 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 243.0) internal successors, (1215), 5 states have internal predecessors, (1215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:11:54,090 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 243.0) internal successors, (1215), 5 states have internal predecessors, (1215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:11:54,090 INFO L175 Difference]: Start difference. First operand has 81 places, 89 transitions, 933 flow. Second operand 4 states and 513 transitions. [2023-11-12 02:11:54,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 176 transitions, 1956 flow [2023-11-12 02:11:55,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 176 transitions, 1928 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-11-12 02:11:55,441 INFO L231 Difference]: Finished difference. Result has 84 places, 86 transitions, 865 flow [2023-11-12 02:11:55,441 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=243, PETRI_DIFFERENCE_MINUEND_FLOW=920, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=865, PETRI_PLACES=84, PETRI_TRANSITIONS=86} [2023-11-12 02:11:55,442 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 41 predicate places. [2023-11-12 02:11:55,442 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 86 transitions, 865 flow [2023-11-12 02:11:55,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 119.5) internal successors, (478), 4 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:11:55,443 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:11:55,443 INFO L208 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] [2023-11-12 02:11:55,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-12 02:11:55,443 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-12 02:11:55,444 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:11:55,444 INFO L85 PathProgramCache]: Analyzing trace with hash 786410637, now seen corresponding path program 2 times [2023-11-12 02:11:55,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:11:55,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902489176] [2023-11-12 02:11:55,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:11:55,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:11:55,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:11:55,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:11:55,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:11:55,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902489176] [2023-11-12 02:11:55,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902489176] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:11:55,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:11:55,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 02:11:55,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542650759] [2023-11-12 02:11:55,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:11:55,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:11:55,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:11:55,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:11:55,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:11:55,821 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 243 [2023-11-12 02:11:55,822 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 86 transitions, 865 flow. Second operand has 7 states, 7 states have (on average 111.0) internal successors, (777), 7 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:11:55,822 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:11:55,822 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 243 [2023-11-12 02:11:55,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand