./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/mix020.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 527bcce2 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33b78445-f2ea-4281-ba0e-d3d4e67c5f8e/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33b78445-f2ea-4281-ba0e-d3d4e67c5f8e/bin/uautomizer-verify-bycVGegfSx/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33b78445-f2ea-4281-ba0e-d3d4e67c5f8e/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33b78445-f2ea-4281-ba0e-d3d4e67c5f8e/bin/uautomizer-verify-bycVGegfSx/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/mix020.oepc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33b78445-f2ea-4281-ba0e-d3d4e67c5f8e/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33b78445-f2ea-4281-ba0e-d3d4e67c5f8e/bin/uautomizer-verify-bycVGegfSx --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 035ec41aa2053cde8ee24830f9eb7cf444ea0c142ead33ef0c1fe95c3a7de39e --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 22:24:10,680 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 22:24:10,819 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33b78445-f2ea-4281-ba0e-d3d4e67c5f8e/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-21 22:24:10,828 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 22:24:10,829 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 22:24:10,869 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 22:24:10,871 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 22:24:10,872 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 22:24:10,873 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-21 22:24:10,878 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-21 22:24:10,879 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 22:24:10,879 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 22:24:10,880 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 22:24:10,882 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 22:24:10,882 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 22:24:10,883 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 22:24:10,883 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 22:24:10,884 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 22:24:10,886 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 22:24:10,886 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 22:24:10,887 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 22:24:10,887 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 22:24:10,888 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 22:24:10,888 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 22:24:10,889 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 22:24:10,889 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 22:24:10,889 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 22:24:10,890 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 22:24:10,897 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 22:24:10,897 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 22:24:10,899 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 22:24:10,899 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:24:10,899 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 22:24:10,900 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 22:24:10,900 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 22:24:10,900 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-21 22:24:10,900 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 22:24:10,901 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 22:24:10,901 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 22:24:10,901 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 22:24:10,901 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 22:24:10,902 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 22:24:10,902 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_33b78445-f2ea-4281-ba0e-d3d4e67c5f8e/bin/uautomizer-verify-bycVGegfSx/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33b78445-f2ea-4281-ba0e-d3d4e67c5f8e/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 035ec41aa2053cde8ee24830f9eb7cf444ea0c142ead33ef0c1fe95c3a7de39e [2023-11-21 22:24:11,178 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 22:24:11,215 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 22:24:11,218 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 22:24:11,219 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 22:24:11,220 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 22:24:11,221 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33b78445-f2ea-4281-ba0e-d3d4e67c5f8e/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/pthread-wmm/mix020.oepc.i [2023-11-21 22:24:14,284 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 22:24:14,665 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 22:24:14,666 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33b78445-f2ea-4281-ba0e-d3d4e67c5f8e/sv-benchmarks/c/pthread-wmm/mix020.oepc.i [2023-11-21 22:24:14,686 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33b78445-f2ea-4281-ba0e-d3d4e67c5f8e/bin/uautomizer-verify-bycVGegfSx/data/fc16a6ad2/351ee06c3f2f48a9bd6473332cf4cdac/FLAG46f0ee2ed [2023-11-21 22:24:14,702 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33b78445-f2ea-4281-ba0e-d3d4e67c5f8e/bin/uautomizer-verify-bycVGegfSx/data/fc16a6ad2/351ee06c3f2f48a9bd6473332cf4cdac [2023-11-21 22:24:14,705 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 22:24:14,707 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 22:24:14,708 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 22:24:14,709 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 22:24:14,714 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 22:24:14,715 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:24:14" (1/1) ... [2023-11-21 22:24:14,716 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29628353 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:24:14, skipping insertion in model container [2023-11-21 22:24:14,717 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:24:14" (1/1) ... [2023-11-21 22:24:14,776 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 22:24:14,952 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_33b78445-f2ea-4281-ba0e-d3d4e67c5f8e/sv-benchmarks/c/pthread-wmm/mix020.oepc.i[945,958] [2023-11-21 22:24:15,220 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:24:15,233 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 22:24:15,246 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_33b78445-f2ea-4281-ba0e-d3d4e67c5f8e/sv-benchmarks/c/pthread-wmm/mix020.oepc.i[945,958] [2023-11-21 22:24:15,302 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:24:15,352 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:24:15,352 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:24:15,360 INFO L206 MainTranslator]: Completed translation [2023-11-21 22:24:15,361 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:24:15 WrapperNode [2023-11-21 22:24:15,362 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 22:24:15,363 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 22:24:15,363 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 22:24:15,363 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 22:24:15,372 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:24:15" (1/1) ... [2023-11-21 22:24:15,411 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:24:15" (1/1) ... [2023-11-21 22:24:15,469 INFO L138 Inliner]: procedures = 177, calls = 69, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 144 [2023-11-21 22:24:15,469 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 22:24:15,471 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 22:24:15,471 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 22:24:15,472 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 22:24:15,484 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:24:15" (1/1) ... [2023-11-21 22:24:15,485 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:24:15" (1/1) ... [2023-11-21 22:24:15,500 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:24:15" (1/1) ... [2023-11-21 22:24:15,519 INFO L187 HeapSplitter]: Split 6 memory accesses to 5 slices as follows [2, 1, 1, 1, 1] [2023-11-21 22:24:15,520 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:24:15" (1/1) ... [2023-11-21 22:24:15,520 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:24:15" (1/1) ... [2023-11-21 22:24:15,530 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:24:15" (1/1) ... [2023-11-21 22:24:15,532 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:24:15" (1/1) ... [2023-11-21 22:24:15,535 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:24:15" (1/1) ... [2023-11-21 22:24:15,538 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:24:15" (1/1) ... [2023-11-21 22:24:15,543 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 22:24:15,555 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 22:24:15,555 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 22:24:15,556 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 22:24:15,557 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:24:15" (1/1) ... [2023-11-21 22:24:15,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:24:15,575 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33b78445-f2ea-4281-ba0e-d3d4e67c5f8e/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:24:15,589 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33b78445-f2ea-4281-ba0e-d3d4e67c5f8e/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 22:24:15,623 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33b78445-f2ea-4281-ba0e-d3d4e67c5f8e/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 22:24:15,633 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-21 22:24:15,633 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-21 22:24:15,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-21 22:24:15,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-21 22:24:15,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-21 22:24:15,634 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-21 22:24:15,634 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 22:24:15,635 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 22:24:15,635 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 22:24:15,635 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-21 22:24:15,635 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-21 22:24:15,636 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-21 22:24:15,636 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-21 22:24:15,636 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-21 22:24:15,636 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-21 22:24:15,637 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-11-21 22:24:15,637 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-11-21 22:24:15,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-21 22:24:15,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-21 22:24:15,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-21 22:24:15,638 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-21 22:24:15,638 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-21 22:24:15,638 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-21 22:24:15,638 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 22:24:15,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 22:24:15,640 WARN L212 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-21 22:24:15,828 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 22:24:15,831 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 22:24:16,419 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 22:24:16,687 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 22:24:16,688 INFO L308 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-21 22:24:16,689 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:24:16 BoogieIcfgContainer [2023-11-21 22:24:16,690 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 22:24:16,692 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 22:24:16,693 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 22:24:16,696 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 22:24:16,696 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 10:24:14" (1/3) ... [2023-11-21 22:24:16,697 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18e33529 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:24:16, skipping insertion in model container [2023-11-21 22:24:16,697 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:24:15" (2/3) ... [2023-11-21 22:24:16,698 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18e33529 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:24:16, skipping insertion in model container [2023-11-21 22:24:16,698 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:24:16" (3/3) ... [2023-11-21 22:24:16,700 INFO L112 eAbstractionObserver]: Analyzing ICFG mix020.oepc.i [2023-11-21 22:24:16,710 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-21 22:24:16,724 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 22:24:16,725 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-21 22:24:16,725 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-21 22:24:16,810 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-21 22:24:16,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 61 places, 49 transitions, 114 flow [2023-11-21 22:24:16,893 INFO L124 PetriNetUnfolderBase]: 1/45 cut-off events. [2023-11-21 22:24:16,893 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-21 22:24:16,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58 conditions, 45 events. 1/45 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 91 event pairs, 0 based on Foata normal form. 0/42 useless extension candidates. Maximal degree in co-relation 49. Up to 2 conditions per place. [2023-11-21 22:24:16,900 INFO L82 GeneralOperation]: Start removeDead. Operand has 61 places, 49 transitions, 114 flow [2023-11-21 22:24:16,907 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 57 places, 45 transitions, 102 flow [2023-11-21 22:24:16,928 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 22:24:16,935 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;@170834d5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 22:24:16,935 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-11-21 22:24:16,942 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-21 22:24:16,942 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2023-11-21 22:24:16,942 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-21 22:24:16,942 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:24:16,943 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-21 22:24:16,944 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-21 22:24:16,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:24:16,954 INFO L85 PathProgramCache]: Analyzing trace with hash 12242167, now seen corresponding path program 1 times [2023-11-21 22:24:16,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:24:16,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500682880] [2023-11-21 22:24:16,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:24:16,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:24:17,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:24:17,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:24:17,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:24:17,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500682880] [2023-11-21 22:24:17,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500682880] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:24:17,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:24:17,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 22:24:17,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518475476] [2023-11-21 22:24:17,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:24:17,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:24:17,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:24:17,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:24:17,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:24:17,566 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 49 [2023-11-21 22:24:17,568 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 45 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:24:17,568 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:24:17,569 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 49 [2023-11-21 22:24:17,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:24:18,808 INFO L124 PetriNetUnfolderBase]: 2495/4136 cut-off events. [2023-11-21 22:24:18,808 INFO L125 PetriNetUnfolderBase]: For 39/39 co-relation queries the response was YES. [2023-11-21 22:24:18,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7712 conditions, 4136 events. 2495/4136 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 28499 event pairs, 443 based on Foata normal form. 135/4199 useless extension candidates. Maximal degree in co-relation 7700. Up to 2779 conditions per place. [2023-11-21 22:24:18,858 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 37 selfloop transitions, 2 changer transitions 2/61 dead transitions. [2023-11-21 22:24:18,859 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 61 transitions, 225 flow [2023-11-21 22:24:18,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:24:18,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:24:18,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 116 transitions. [2023-11-21 22:24:18,874 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7891156462585034 [2023-11-21 22:24:18,875 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 116 transitions. [2023-11-21 22:24:18,876 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 116 transitions. [2023-11-21 22:24:18,878 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:24:18,880 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 116 transitions. [2023-11-21 22:24:18,885 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:24:18,890 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 49.0) internal successors, (196), 4 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:24:18,891 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 49.0) internal successors, (196), 4 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:24:18,893 INFO L175 Difference]: Start difference. First operand has 57 places, 45 transitions, 102 flow. Second operand 3 states and 116 transitions. [2023-11-21 22:24:18,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 61 transitions, 225 flow [2023-11-21 22:24:18,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 61 transitions, 218 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-21 22:24:18,908 INFO L231 Difference]: Finished difference. Result has 54 places, 42 transitions, 96 flow [2023-11-21 22:24:18,910 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=54, PETRI_TRANSITIONS=42} [2023-11-21 22:24:18,914 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, -3 predicate places. [2023-11-21 22:24:18,915 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 42 transitions, 96 flow [2023-11-21 22:24:18,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:24:18,915 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:24:18,915 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:24:18,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-21 22:24:18,916 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)] === [2023-11-21 22:24:18,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:24:18,917 INFO L85 PathProgramCache]: Analyzing trace with hash -959684712, now seen corresponding path program 1 times [2023-11-21 22:24:18,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:24:18,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962216597] [2023-11-21 22:24:18,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:24:18,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:24:18,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:24:19,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:24:19,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:24:19,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962216597] [2023-11-21 22:24:19,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962216597] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:24:19,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:24:19,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 22:24:19,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852849079] [2023-11-21 22:24:19,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:24:19,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 22:24:19,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:24:19,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 22:24:19,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-21 22:24:19,519 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 49 [2023-11-21 22:24:19,520 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 42 transitions, 96 flow. Second operand has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:24:19,521 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:24:19,521 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 49 [2023-11-21 22:24:19,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:24:26,554 INFO L124 PetriNetUnfolderBase]: 28756/41030 cut-off events. [2023-11-21 22:24:26,554 INFO L125 PetriNetUnfolderBase]: For 1950/1950 co-relation queries the response was YES. [2023-11-21 22:24:26,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82082 conditions, 41030 events. 28756/41030 cut-off events. For 1950/1950 co-relation queries the response was YES. Maximal size of possible extension queue 1848. Compared 287665 event pairs, 6922 based on Foata normal form. 0/39954 useless extension candidates. Maximal degree in co-relation 82072. Up to 16239 conditions per place. [2023-11-21 22:24:26,849 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 48 selfloop transitions, 7 changer transitions 96/163 dead transitions. [2023-11-21 22:24:26,849 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 163 transitions, 660 flow [2023-11-21 22:24:26,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-21 22:24:26,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-21 22:24:26,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 297 transitions. [2023-11-21 22:24:26,854 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.673469387755102 [2023-11-21 22:24:26,854 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 297 transitions. [2023-11-21 22:24:26,854 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 297 transitions. [2023-11-21 22:24:26,860 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:24:26,860 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 297 transitions. [2023-11-21 22:24:26,863 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 33.0) internal successors, (297), 9 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:24:26,868 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 49.0) internal successors, (490), 10 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:24:26,870 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 49.0) internal successors, (490), 10 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:24:26,870 INFO L175 Difference]: Start difference. First operand has 54 places, 42 transitions, 96 flow. Second operand 9 states and 297 transitions. [2023-11-21 22:24:26,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 163 transitions, 660 flow [2023-11-21 22:24:26,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 163 transitions, 642 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 22:24:26,882 INFO L231 Difference]: Finished difference. Result has 67 places, 47 transitions, 188 flow [2023-11-21 22:24:26,883 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=188, PETRI_PLACES=67, PETRI_TRANSITIONS=47} [2023-11-21 22:24:26,884 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 10 predicate places. [2023-11-21 22:24:26,884 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 47 transitions, 188 flow [2023-11-21 22:24:26,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:24:26,885 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:24:26,885 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:24:26,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-21 22:24:26,886 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)] === [2023-11-21 22:24:26,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:24:26,896 INFO L85 PathProgramCache]: Analyzing trace with hash -1886012231, now seen corresponding path program 1 times [2023-11-21 22:24:26,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:24:26,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288340475] [2023-11-21 22:24:26,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:24:26,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:24:26,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:24:27,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:24:27,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:24:27,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288340475] [2023-11-21 22:24:27,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288340475] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:24:27,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:24:27,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 22:24:27,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664033277] [2023-11-21 22:24:27,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:24:27,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 22:24:27,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:24:27,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 22:24:27,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-21 22:24:27,190 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 49 [2023-11-21 22:24:27,191 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 47 transitions, 188 flow. Second operand has 5 states, 5 states have (on average 22.8) internal successors, (114), 5 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:24:27,191 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:24:27,191 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 49 [2023-11-21 22:24:27,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:24:31,457 INFO L124 PetriNetUnfolderBase]: 15842/24780 cut-off events. [2023-11-21 22:24:31,457 INFO L125 PetriNetUnfolderBase]: For 21446/22926 co-relation queries the response was YES. [2023-11-21 22:24:31,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65227 conditions, 24780 events. 15842/24780 cut-off events. For 21446/22926 co-relation queries the response was YES. Maximal size of possible extension queue 1285. Compared 194075 event pairs, 4163 based on Foata normal form. 690/24506 useless extension candidates. Maximal degree in co-relation 65209. Up to 14194 conditions per place. [2023-11-21 22:24:31,801 INFO L140 encePairwiseOnDemand]: 44/49 looper letters, 34 selfloop transitions, 3 changer transitions 43/100 dead transitions. [2023-11-21 22:24:31,802 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 100 transitions, 512 flow [2023-11-21 22:24:31,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-21 22:24:31,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-21 22:24:31,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 216 transitions. [2023-11-21 22:24:31,806 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6297376093294461 [2023-11-21 22:24:31,807 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 216 transitions. [2023-11-21 22:24:31,807 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 216 transitions. [2023-11-21 22:24:31,807 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:24:31,808 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 216 transitions. [2023-11-21 22:24:31,809 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 30.857142857142858) internal successors, (216), 7 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:24:31,811 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 49.0) internal successors, (392), 8 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:24:31,811 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 49.0) internal successors, (392), 8 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:24:31,812 INFO L175 Difference]: Start difference. First operand has 67 places, 47 transitions, 188 flow. Second operand 7 states and 216 transitions. [2023-11-21 22:24:31,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 100 transitions, 512 flow [2023-11-21 22:24:32,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 100 transitions, 462 flow, removed 14 selfloop flow, removed 4 redundant places. [2023-11-21 22:24:32,058 INFO L231 Difference]: Finished difference. Result has 67 places, 47 transitions, 177 flow [2023-11-21 22:24:32,059 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=177, PETRI_PLACES=67, PETRI_TRANSITIONS=47} [2023-11-21 22:24:32,060 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 10 predicate places. [2023-11-21 22:24:32,060 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 47 transitions, 177 flow [2023-11-21 22:24:32,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.8) internal successors, (114), 5 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:24:32,061 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:24:32,061 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:24:32,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-21 22:24:32,061 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)] === [2023-11-21 22:24:32,062 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:24:32,062 INFO L85 PathProgramCache]: Analyzing trace with hash -1960942580, now seen corresponding path program 1 times [2023-11-21 22:24:32,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:24:32,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535393882] [2023-11-21 22:24:32,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:24:32,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:24:32,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:24:32,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:24:32,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:24:32,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535393882] [2023-11-21 22:24:32,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535393882] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:24:32,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:24:32,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 22:24:32,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661370169] [2023-11-21 22:24:32,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:24:32,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 22:24:32,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:24:32,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 22:24:32,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-21 22:24:32,332 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 49 [2023-11-21 22:24:32,332 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 47 transitions, 177 flow. Second operand has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:24:32,332 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:24:32,333 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 49 [2023-11-21 22:24:32,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:24:36,080 INFO L124 PetriNetUnfolderBase]: 17095/26399 cut-off events. [2023-11-21 22:24:36,080 INFO L125 PetriNetUnfolderBase]: For 23074/23501 co-relation queries the response was YES. [2023-11-21 22:24:36,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68041 conditions, 26399 events. 17095/26399 cut-off events. For 23074/23501 co-relation queries the response was YES. Maximal size of possible extension queue 1284. Compared 201879 event pairs, 5502 based on Foata normal form. 753/26766 useless extension candidates. Maximal degree in co-relation 68020. Up to 17877 conditions per place. [2023-11-21 22:24:36,449 INFO L140 encePairwiseOnDemand]: 43/49 looper letters, 40 selfloop transitions, 5 changer transitions 47/110 dead transitions. [2023-11-21 22:24:36,450 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 110 transitions, 587 flow [2023-11-21 22:24:36,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-21 22:24:36,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-21 22:24:36,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 219 transitions. [2023-11-21 22:24:36,453 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6384839650145773 [2023-11-21 22:24:36,453 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 219 transitions. [2023-11-21 22:24:36,453 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 219 transitions. [2023-11-21 22:24:36,453 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:24:36,454 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 219 transitions. [2023-11-21 22:24:36,455 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 31.285714285714285) internal successors, (219), 7 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:24:36,456 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 49.0) internal successors, (392), 8 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:24:36,458 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 49.0) internal successors, (392), 8 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:24:36,458 INFO L175 Difference]: Start difference. First operand has 67 places, 47 transitions, 177 flow. Second operand 7 states and 219 transitions. [2023-11-21 22:24:36,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 110 transitions, 587 flow [2023-11-21 22:24:37,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 110 transitions, 561 flow, removed 10 selfloop flow, removed 8 redundant places. [2023-11-21 22:24:37,843 INFO L231 Difference]: Finished difference. Result has 66 places, 50 transitions, 214 flow [2023-11-21 22:24:37,844 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=214, PETRI_PLACES=66, PETRI_TRANSITIONS=50} [2023-11-21 22:24:37,844 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 9 predicate places. [2023-11-21 22:24:37,845 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 50 transitions, 214 flow [2023-11-21 22:24:37,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:24:37,845 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:24:37,845 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] [2023-11-21 22:24:37,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-21 22:24:37,846 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)] === [2023-11-21 22:24:37,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:24:37,847 INFO L85 PathProgramCache]: Analyzing trace with hash 1853110091, now seen corresponding path program 1 times [2023-11-21 22:24:37,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:24:37,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191573839] [2023-11-21 22:24:37,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:24:37,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:24:37,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:24:38,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:24:38,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:24:38,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191573839] [2023-11-21 22:24:38,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191573839] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:24:38,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:24:38,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 22:24:38,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907751684] [2023-11-21 22:24:38,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:24:38,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 22:24:38,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:24:38,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 22:24:38,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 22:24:38,049 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 49 [2023-11-21 22:24:38,049 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 50 transitions, 214 flow. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:24:38,049 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:24:38,050 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 49 [2023-11-21 22:24:38,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:24:43,242 INFO L124 PetriNetUnfolderBase]: 28186/42449 cut-off events. [2023-11-21 22:24:43,243 INFO L125 PetriNetUnfolderBase]: For 30276/34075 co-relation queries the response was YES. [2023-11-21 22:24:43,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103029 conditions, 42449 events. 28186/42449 cut-off events. For 30276/34075 co-relation queries the response was YES. Maximal size of possible extension queue 1890. Compared 320034 event pairs, 4740 based on Foata normal form. 1666/42806 useless extension candidates. Maximal degree in co-relation 103009. Up to 20987 conditions per place. [2023-11-21 22:24:43,547 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 56 selfloop transitions, 6 changer transitions 0/84 dead transitions. [2023-11-21 22:24:43,547 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 84 transitions, 428 flow [2023-11-21 22:24:43,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 22:24:43,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-21 22:24:43,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 137 transitions. [2023-11-21 22:24:43,550 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6989795918367347 [2023-11-21 22:24:43,550 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 137 transitions. [2023-11-21 22:24:43,550 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 137 transitions. [2023-11-21 22:24:43,550 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:24:43,551 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 137 transitions. [2023-11-21 22:24:43,554 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:24:43,556 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 49.0) internal successors, (245), 5 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:24:43,556 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 49.0) internal successors, (245), 5 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:24:43,556 INFO L175 Difference]: Start difference. First operand has 66 places, 50 transitions, 214 flow. Second operand 4 states and 137 transitions. [2023-11-21 22:24:43,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 84 transitions, 428 flow [2023-11-21 22:24:44,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 84 transitions, 419 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-11-21 22:24:44,215 INFO L231 Difference]: Finished difference. Result has 64 places, 55 transitions, 251 flow [2023-11-21 22:24:44,215 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=205, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=251, PETRI_PLACES=64, PETRI_TRANSITIONS=55} [2023-11-21 22:24:44,216 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 7 predicate places. [2023-11-21 22:24:44,216 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 55 transitions, 251 flow [2023-11-21 22:24:44,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:24:44,217 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:24:44,217 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] [2023-11-21 22:24:44,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-21 22:24:44,218 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)] === [2023-11-21 22:24:44,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:24:44,218 INFO L85 PathProgramCache]: Analyzing trace with hash -1503201267, now seen corresponding path program 1 times [2023-11-21 22:24:44,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:24:44,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341504633] [2023-11-21 22:24:44,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:24:44,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:24:44,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:24:44,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:24:44,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:24:44,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341504633] [2023-11-21 22:24:44,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341504633] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:24:44,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:24:44,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-21 22:24:44,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817110737] [2023-11-21 22:24:44,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:24:44,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 22:24:44,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:24:44,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 22:24:44,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:24:44,455 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 49 [2023-11-21 22:24:44,455 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 55 transitions, 251 flow. Second operand has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 6 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:24:44,456 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:24:44,456 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 49 [2023-11-21 22:24:44,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:24:51,336 INFO L124 PetriNetUnfolderBase]: 37134/54638 cut-off events. [2023-11-21 22:24:51,336 INFO L125 PetriNetUnfolderBase]: For 58134/61264 co-relation queries the response was YES. [2023-11-21 22:24:51,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 153619 conditions, 54638 events. 37134/54638 cut-off events. For 58134/61264 co-relation queries the response was YES. Maximal size of possible extension queue 2475. Compared 413668 event pairs, 11564 based on Foata normal form. 902/52528 useless extension candidates. Maximal degree in co-relation 153598. Up to 25127 conditions per place. [2023-11-21 22:24:51,680 INFO L140 encePairwiseOnDemand]: 41/49 looper letters, 109 selfloop transitions, 14 changer transitions 0/140 dead transitions. [2023-11-21 22:24:51,681 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 140 transitions, 829 flow [2023-11-21 22:24:51,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-21 22:24:51,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-21 22:24:51,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 247 transitions. [2023-11-21 22:24:51,683 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6301020408163265 [2023-11-21 22:24:51,683 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 247 transitions. [2023-11-21 22:24:51,683 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 247 transitions. [2023-11-21 22:24:51,684 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:24:51,684 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 247 transitions. [2023-11-21 22:24:51,685 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 30.875) internal successors, (247), 8 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:24:51,686 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 49.0) internal successors, (441), 9 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) [2023-11-21 22:24:51,687 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 49.0) internal successors, (441), 9 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) [2023-11-21 22:24:51,687 INFO L175 Difference]: Start difference. First operand has 64 places, 55 transitions, 251 flow. Second operand 8 states and 247 transitions. [2023-11-21 22:24:51,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 140 transitions, 829 flow [2023-11-21 22:24:51,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 140 transitions, 821 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-11-21 22:24:51,705 INFO L231 Difference]: Finished difference. Result has 76 places, 62 transitions, 362 flow [2023-11-21 22:24:51,706 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=247, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=362, PETRI_PLACES=76, PETRI_TRANSITIONS=62} [2023-11-21 22:24:51,706 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 19 predicate places. [2023-11-21 22:24:51,707 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 62 transitions, 362 flow [2023-11-21 22:24:51,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 6 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:24:51,707 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:24:51,707 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] [2023-11-21 22:24:51,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-21 22:24:51,708 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)] === [2023-11-21 22:24:51,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:24:51,708 INFO L85 PathProgramCache]: Analyzing trace with hash 772865609, now seen corresponding path program 1 times [2023-11-21 22:24:51,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:24:51,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103266372] [2023-11-21 22:24:51,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:24:51,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:24:51,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:24:52,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:24:52,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:24:52,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103266372] [2023-11-21 22:24:52,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103266372] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:24:52,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:24:52,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 22:24:52,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297573083] [2023-11-21 22:24:52,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:24:52,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 22:24:52,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:24:52,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 22:24:52,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-21 22:24:52,119 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 49 [2023-11-21 22:24:52,120 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 62 transitions, 362 flow. Second operand has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:24:52,120 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:24:52,120 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 49 [2023-11-21 22:24:52,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:24:58,153 INFO L124 PetriNetUnfolderBase]: 32900/49200 cut-off events. [2023-11-21 22:24:58,153 INFO L125 PetriNetUnfolderBase]: For 48941/51425 co-relation queries the response was YES. [2023-11-21 22:24:58,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 133561 conditions, 49200 events. 32900/49200 cut-off events. For 48941/51425 co-relation queries the response was YES. Maximal size of possible extension queue 2039. Compared 367500 event pairs, 4082 based on Foata normal form. 2409/50315 useless extension candidates. Maximal degree in co-relation 133533. Up to 17441 conditions per place. [2023-11-21 22:24:58,458 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 73 selfloop transitions, 10 changer transitions 3/112 dead transitions. [2023-11-21 22:24:58,459 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 112 transitions, 684 flow [2023-11-21 22:24:58,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 22:24:58,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-21 22:24:58,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 176 transitions. [2023-11-21 22:24:58,461 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7183673469387755 [2023-11-21 22:24:58,461 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 176 transitions. [2023-11-21 22:24:58,461 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 176 transitions. [2023-11-21 22:24:58,462 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:24:58,462 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 176 transitions. [2023-11-21 22:24:58,463 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 35.2) internal successors, (176), 5 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:24:58,464 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 49.0) internal successors, (294), 6 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:24:58,464 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 49.0) internal successors, (294), 6 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:24:58,464 INFO L175 Difference]: Start difference. First operand has 76 places, 62 transitions, 362 flow. Second operand 5 states and 176 transitions. [2023-11-21 22:24:58,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 112 transitions, 684 flow [2023-11-21 22:24:58,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 112 transitions, 664 flow, removed 10 selfloop flow, removed 0 redundant places. [2023-11-21 22:24:58,998 INFO L231 Difference]: Finished difference. Result has 82 places, 64 transitions, 381 flow [2023-11-21 22:24:58,999 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=381, PETRI_PLACES=82, PETRI_TRANSITIONS=64} [2023-11-21 22:24:59,000 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 25 predicate places. [2023-11-21 22:24:59,000 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 64 transitions, 381 flow [2023-11-21 22:24:59,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:24:59,000 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:24:59,000 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, 1, 1] [2023-11-21 22:24:59,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-21 22:24:59,002 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)] === [2023-11-21 22:24:59,002 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:24:59,002 INFO L85 PathProgramCache]: Analyzing trace with hash -977078932, now seen corresponding path program 1 times [2023-11-21 22:24:59,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:24:59,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736925029] [2023-11-21 22:24:59,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:24:59,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:24:59,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:24:59,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:24:59,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:24:59,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736925029] [2023-11-21 22:24:59,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736925029] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:24:59,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:24:59,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:24:59,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222372838] [2023-11-21 22:24:59,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:24:59,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 22:24:59,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:24:59,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 22:24:59,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:24:59,604 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 49 [2023-11-21 22:24:59,604 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 64 transitions, 381 flow. Second operand has 6 states, 6 states have (on average 22.0) internal successors, (132), 6 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:24:59,604 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:24:59,605 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 49 [2023-11-21 22:24:59,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:25:04,425 INFO L124 PetriNetUnfolderBase]: 25224/37340 cut-off events. [2023-11-21 22:25:04,425 INFO L125 PetriNetUnfolderBase]: For 50529/52124 co-relation queries the response was YES. [2023-11-21 22:25:04,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110643 conditions, 37340 events. 25224/37340 cut-off events. For 50529/52124 co-relation queries the response was YES. Maximal size of possible extension queue 1763. Compared 267618 event pairs, 2748 based on Foata normal form. 1478/37576 useless extension candidates. Maximal degree in co-relation 110611. Up to 12966 conditions per place. [2023-11-21 22:25:04,924 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 86 selfloop transitions, 14 changer transitions 2/128 dead transitions. [2023-11-21 22:25:04,924 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 128 transitions, 794 flow [2023-11-21 22:25:04,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 22:25:04,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-21 22:25:04,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 213 transitions. [2023-11-21 22:25:04,926 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7244897959183674 [2023-11-21 22:25:04,926 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 213 transitions. [2023-11-21 22:25:04,926 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 213 transitions. [2023-11-21 22:25:04,927 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:25:04,927 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 213 transitions. [2023-11-21 22:25:04,928 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 35.5) internal successors, (213), 6 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:25:04,932 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 49.0) internal successors, (343), 7 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:25:04,933 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 49.0) internal successors, (343), 7 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:25:04,933 INFO L175 Difference]: Start difference. First operand has 82 places, 64 transitions, 381 flow. Second operand 6 states and 213 transitions. [2023-11-21 22:25:04,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 128 transitions, 794 flow [2023-11-21 22:25:05,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 128 transitions, 772 flow, removed 7 selfloop flow, removed 4 redundant places. [2023-11-21 22:25:05,036 INFO L231 Difference]: Finished difference. Result has 83 places, 69 transitions, 445 flow [2023-11-21 22:25:05,036 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=360, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=445, PETRI_PLACES=83, PETRI_TRANSITIONS=69} [2023-11-21 22:25:05,037 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 26 predicate places. [2023-11-21 22:25:05,037 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 69 transitions, 445 flow [2023-11-21 22:25:05,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.0) internal successors, (132), 6 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:25:05,038 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:25:05,038 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, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:25:05,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-21 22:25:05,038 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)] === [2023-11-21 22:25:05,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:25:05,039 INFO L85 PathProgramCache]: Analyzing trace with hash 1566305322, now seen corresponding path program 1 times [2023-11-21 22:25:05,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:25:05,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267042537] [2023-11-21 22:25:05,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:25:05,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:25:05,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat