./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/mix039.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63a6484f-7044-4825-bc08-0d0e34165889/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63a6484f-7044-4825-bc08-0d0e34165889/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63a6484f-7044-4825-bc08-0d0e34165889/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63a6484f-7044-4825-bc08-0d0e34165889/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/mix039.oepc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63a6484f-7044-4825-bc08-0d0e34165889/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63a6484f-7044-4825-bc08-0d0e34165889/bin/uautomizer-verify-uTZkv6EMXl --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 42c5ff0d69642601057eb29fc7d78b67af5ab0b43644460199f4561abe049d3b --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:28:34,756 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:28:34,876 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63a6484f-7044-4825-bc08-0d0e34165889/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-12 02:28:34,883 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:28:34,884 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:28:34,925 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:28:34,926 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:28:34,927 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:28:34,928 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:28:34,933 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:28:34,934 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:28:34,935 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:28:34,935 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:28:34,937 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:28:34,938 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:28:34,938 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:28:34,939 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:28:34,939 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:28:34,940 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:28:34,940 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:28:34,941 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:28:34,941 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:28:34,942 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:28:34,942 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:28:34,943 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:28:34,944 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:28:34,944 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:28:34,945 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:28:34,946 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:28:34,946 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:28:34,948 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:28:34,948 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:28:34,948 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:28:34,948 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:28:34,949 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:28:34,949 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:28:34,949 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:28:34,950 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:28:34,950 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:28:34,950 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_63a6484f-7044-4825-bc08-0d0e34165889/bin/uautomizer-verify-uTZkv6EMXl/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63a6484f-7044-4825-bc08-0d0e34165889/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 42c5ff0d69642601057eb29fc7d78b67af5ab0b43644460199f4561abe049d3b [2023-11-12 02:28:35,272 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:28:35,318 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:28:35,321 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:28:35,322 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:28:35,323 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:28:35,324 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63a6484f-7044-4825-bc08-0d0e34165889/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/pthread-wmm/mix039.oepc.i [2023-11-12 02:28:38,467 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:28:38,760 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:28:38,761 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63a6484f-7044-4825-bc08-0d0e34165889/sv-benchmarks/c/pthread-wmm/mix039.oepc.i [2023-11-12 02:28:38,783 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63a6484f-7044-4825-bc08-0d0e34165889/bin/uautomizer-verify-uTZkv6EMXl/data/aff787023/2af6ad913e8d42c48b1809de23a7dafa/FLAGef4b3a4b0 [2023-11-12 02:28:38,799 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63a6484f-7044-4825-bc08-0d0e34165889/bin/uautomizer-verify-uTZkv6EMXl/data/aff787023/2af6ad913e8d42c48b1809de23a7dafa [2023-11-12 02:28:38,801 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:28:38,803 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:28:38,805 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:28:38,805 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:28:38,811 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:28:38,812 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:28:38" (1/1) ... [2023-11-12 02:28:38,813 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@924f554 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:28:38, skipping insertion in model container [2023-11-12 02:28:38,813 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:28:38" (1/1) ... [2023-11-12 02:28:38,891 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:28:39,098 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_63a6484f-7044-4825-bc08-0d0e34165889/sv-benchmarks/c/pthread-wmm/mix039.oepc.i[945,958] [2023-11-12 02:28:39,379 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:28:39,392 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:28:39,407 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_63a6484f-7044-4825-bc08-0d0e34165889/sv-benchmarks/c/pthread-wmm/mix039.oepc.i[945,958] [2023-11-12 02:28:39,478 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:28:39,532 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:28:39,533 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:28:39,541 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:28:39,542 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:28:39 WrapperNode [2023-11-12 02:28:39,542 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:28:39,544 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:28:39,544 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:28:39,545 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:28:39,554 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:28:39" (1/1) ... [2023-11-12 02:28:39,576 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:28:39" (1/1) ... [2023-11-12 02:28:39,608 INFO L138 Inliner]: procedures = 177, calls = 71, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 145 [2023-11-12 02:28:39,608 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:28:39,609 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:28:39,609 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:28:39,609 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:28:39,621 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:28:39" (1/1) ... [2023-11-12 02:28:39,621 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:28:39" (1/1) ... [2023-11-12 02:28:39,637 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:28:39" (1/1) ... [2023-11-12 02:28:39,638 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:28:39" (1/1) ... [2023-11-12 02:28:39,653 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:28:39" (1/1) ... [2023-11-12 02:28:39,655 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:28:39" (1/1) ... [2023-11-12 02:28:39,658 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:28:39" (1/1) ... [2023-11-12 02:28:39,660 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:28:39" (1/1) ... [2023-11-12 02:28:39,665 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:28:39,666 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:28:39,666 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:28:39,667 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:28:39,667 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:28:39" (1/1) ... [2023-11-12 02:28:39,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:28:39,693 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63a6484f-7044-4825-bc08-0d0e34165889/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:28:39,721 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63a6484f-7044-4825-bc08-0d0e34165889/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:28:39,750 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63a6484f-7044-4825-bc08-0d0e34165889/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:28:39,777 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 02:28:39,777 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-12 02:28:39,777 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:28:39,778 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 02:28:39,778 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 02:28:39,779 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-12 02:28:39,779 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-12 02:28:39,780 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-12 02:28:39,780 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-12 02:28:39,780 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-12 02:28:39,782 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-12 02:28:39,782 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-11-12 02:28:39,783 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-11-12 02:28:39,783 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:28:39,783 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-12 02:28:39,783 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:28:39,783 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:28:39,785 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-12 02:28:40,017 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:28:40,019 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:28:40,544 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:28:40,716 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:28:40,717 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-12 02:28:40,720 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:28:40 BoogieIcfgContainer [2023-11-12 02:28:40,721 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:28:40,724 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:28:40,725 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:28:40,728 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:28:40,729 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:28:38" (1/3) ... [2023-11-12 02:28:40,730 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d32d2d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:28:40, skipping insertion in model container [2023-11-12 02:28:40,731 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:28:39" (2/3) ... [2023-11-12 02:28:40,731 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d32d2d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:28:40, skipping insertion in model container [2023-11-12 02:28:40,732 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:28:40" (3/3) ... [2023-11-12 02:28:40,733 INFO L112 eAbstractionObserver]: Analyzing ICFG mix039.oepc.i [2023-11-12 02:28:40,744 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-12 02:28:40,756 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:28:40,756 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-12 02:28:40,756 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-12 02:28:40,887 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-12 02:28:40,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 147 places, 136 transitions, 288 flow [2023-11-12 02:28:41,033 INFO L124 PetriNetUnfolderBase]: 2/132 cut-off events. [2023-11-12 02:28:41,033 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:28:41,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 145 conditions, 132 events. 2/132 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 75 event pairs, 0 based on Foata normal form. 0/128 useless extension candidates. Maximal degree in co-relation 93. Up to 2 conditions per place. [2023-11-12 02:28:41,041 INFO L82 GeneralOperation]: Start removeDead. Operand has 147 places, 136 transitions, 288 flow [2023-11-12 02:28:41,047 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 143 places, 132 transitions, 276 flow [2023-11-12 02:28:41,051 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-12 02:28:41,061 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 143 places, 132 transitions, 276 flow [2023-11-12 02:28:41,064 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 143 places, 132 transitions, 276 flow [2023-11-12 02:28:41,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 143 places, 132 transitions, 276 flow [2023-11-12 02:28:41,101 INFO L124 PetriNetUnfolderBase]: 2/132 cut-off events. [2023-11-12 02:28:41,101 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:28:41,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 145 conditions, 132 events. 2/132 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 75 event pairs, 0 based on Foata normal form. 0/128 useless extension candidates. Maximal degree in co-relation 93. Up to 2 conditions per place. [2023-11-12 02:28:41,107 INFO L119 LiptonReduction]: Number of co-enabled transitions 3518 [2023-11-12 02:28:46,504 INFO L134 LiptonReduction]: Checked pairs total: 9381 [2023-11-12 02:28:46,504 INFO L136 LiptonReduction]: Total number of compositions: 113 [2023-11-12 02:28:46,522 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:28:46,533 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;@43ffb0b9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:28:46,539 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-11-12 02:28:46,546 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-12 02:28:46,548 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2023-11-12 02:28:46,549 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:28:46,549 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:28:46,550 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-12 02:28:46,550 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-12 02:28:46,557 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:28:46,557 INFO L85 PathProgramCache]: Analyzing trace with hash 568268, now seen corresponding path program 1 times [2023-11-12 02:28:46,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:28:46,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519706334] [2023-11-12 02:28:46,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:28:46,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:28:46,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:28:47,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:28:47,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:28:47,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519706334] [2023-11-12 02:28:47,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519706334] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:28:47,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:28:47,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:28:47,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484981018] [2023-11-12 02:28:47,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:28:47,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:28:47,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:28:47,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:28:47,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:28:47,114 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 249 [2023-11-12 02:28:47,121 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 31 transitions, 74 flow. Second operand has 3 states, 3 states have (on average 121.0) internal successors, (363), 3 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:28:47,121 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:28:47,121 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 249 [2023-11-12 02:28:47,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:28:48,807 INFO L124 PetriNetUnfolderBase]: 5879/8497 cut-off events. [2023-11-12 02:28:48,808 INFO L125 PetriNetUnfolderBase]: For 77/77 co-relation queries the response was YES. [2023-11-12 02:28:48,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16641 conditions, 8497 events. 5879/8497 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 400. Compared 50100 event pairs, 1079 based on Foata normal form. 0/8107 useless extension candidates. Maximal degree in co-relation 16629. Up to 6367 conditions per place. [2023-11-12 02:28:48,888 INFO L140 encePairwiseOnDemand]: 245/249 looper letters, 43 selfloop transitions, 2 changer transitions 2/50 dead transitions. [2023-11-12 02:28:48,889 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 50 transitions, 215 flow [2023-11-12 02:28:48,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:28:48,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:28:48,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 410 transitions. [2023-11-12 02:28:48,912 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5488621151271754 [2023-11-12 02:28:48,913 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 410 transitions. [2023-11-12 02:28:48,913 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 410 transitions. [2023-11-12 02:28:48,918 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:28:48,921 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 410 transitions. [2023-11-12 02:28:48,927 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 136.66666666666666) internal successors, (410), 3 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:28:48,934 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 249.0) internal successors, (996), 4 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:28:48,935 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 249.0) internal successors, (996), 4 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:28:48,937 INFO L175 Difference]: Start difference. First operand has 43 places, 31 transitions, 74 flow. Second operand 3 states and 410 transitions. [2023-11-12 02:28:48,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 50 transitions, 215 flow [2023-11-12 02:28:48,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 50 transitions, 208 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-12 02:28:48,946 INFO L231 Difference]: Finished difference. Result has 40 places, 28 transitions, 68 flow [2023-11-12 02:28:48,949 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=249, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=68, PETRI_PLACES=40, PETRI_TRANSITIONS=28} [2023-11-12 02:28:48,953 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -3 predicate places. [2023-11-12 02:28:48,953 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 28 transitions, 68 flow [2023-11-12 02:28:48,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 121.0) internal successors, (363), 3 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:28:48,954 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:28:48,954 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:28:48,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 02:28:48,955 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-12 02:28:48,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:28:48,958 INFO L85 PathProgramCache]: Analyzing trace with hash -2075769954, now seen corresponding path program 1 times [2023-11-12 02:28:48,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:28:48,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13840710] [2023-11-12 02:28:48,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:28:48,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:28:49,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:28:49,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:28:49,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:28:49,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13840710] [2023-11-12 02:28:49,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13840710] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:28:49,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:28:49,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:28:49,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449459690] [2023-11-12 02:28:49,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:28:49,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:28:49,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:28:49,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:28:49,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:28:49,466 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 249 [2023-11-12 02:28:49,467 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 28 transitions, 68 flow. Second operand has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:28:49,468 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:28:49,468 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 249 [2023-11-12 02:28:49,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:28:52,746 INFO L124 PetriNetUnfolderBase]: 14423/19622 cut-off events. [2023-11-12 02:28:52,746 INFO L125 PetriNetUnfolderBase]: For 1011/1011 co-relation queries the response was YES. [2023-11-12 02:28:52,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40728 conditions, 19622 events. 14423/19622 cut-off events. For 1011/1011 co-relation queries the response was YES. Maximal size of possible extension queue 626. Compared 101327 event pairs, 5141 based on Foata normal form. 458/20080 useless extension candidates. Maximal degree in co-relation 40718. Up to 13627 conditions per place. [2023-11-12 02:28:52,905 INFO L140 encePairwiseOnDemand]: 241/249 looper letters, 46 selfloop transitions, 7 changer transitions 0/53 dead transitions. [2023-11-12 02:28:52,905 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 53 transitions, 232 flow [2023-11-12 02:28:52,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:28:52,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:28:52,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 387 transitions. [2023-11-12 02:28:52,908 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5180722891566265 [2023-11-12 02:28:52,909 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 387 transitions. [2023-11-12 02:28:52,909 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 387 transitions. [2023-11-12 02:28:52,912 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:28:52,913 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 387 transitions. [2023-11-12 02:28:52,914 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 129.0) internal successors, (387), 3 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:28:52,918 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 249.0) internal successors, (996), 4 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:28:52,919 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 249.0) internal successors, (996), 4 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:28:52,920 INFO L175 Difference]: Start difference. First operand has 40 places, 28 transitions, 68 flow. Second operand 3 states and 387 transitions. [2023-11-12 02:28:52,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 53 transitions, 232 flow [2023-11-12 02:28:52,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 53 transitions, 226 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:28:52,925 INFO L231 Difference]: Finished difference. Result has 41 places, 34 transitions, 118 flow [2023-11-12 02:28:52,931 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=249, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=118, PETRI_PLACES=41, PETRI_TRANSITIONS=34} [2023-11-12 02:28:52,933 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -2 predicate places. [2023-11-12 02:28:52,934 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 34 transitions, 118 flow [2023-11-12 02:28:52,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:28:52,934 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:28:52,935 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:28:52,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 02:28:52,935 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-12 02:28:52,938 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:28:52,938 INFO L85 PathProgramCache]: Analyzing trace with hash 75639660, now seen corresponding path program 1 times [2023-11-12 02:28:52,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:28:52,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276355732] [2023-11-12 02:28:52,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:28:52,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:28:52,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:28:53,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:28:53,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:28:53,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276355732] [2023-11-12 02:28:53,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276355732] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:28:53,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:28:53,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:28:53,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883489405] [2023-11-12 02:28:53,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:28:53,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:28:53,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:28:53,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:28:53,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:28:53,249 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 249 [2023-11-12 02:28:53,250 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 34 transitions, 118 flow. Second operand has 4 states, 4 states have (on average 114.0) internal successors, (456), 4 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:28:53,250 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:28:53,250 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 249 [2023-11-12 02:28:53,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:28:56,121 INFO L124 PetriNetUnfolderBase]: 13341/18172 cut-off events. [2023-11-12 02:28:56,121 INFO L125 PetriNetUnfolderBase]: For 6586/6586 co-relation queries the response was YES. [2023-11-12 02:28:56,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44397 conditions, 18172 events. 13341/18172 cut-off events. For 6586/6586 co-relation queries the response was YES. Maximal size of possible extension queue 564. Compared 90028 event pairs, 3866 based on Foata normal form. 230/18402 useless extension candidates. Maximal degree in co-relation 44385. Up to 9003 conditions per place. [2023-11-12 02:28:56,263 INFO L140 encePairwiseOnDemand]: 241/249 looper letters, 54 selfloop transitions, 8 changer transitions 0/62 dead transitions. [2023-11-12 02:28:56,263 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 62 transitions, 320 flow [2023-11-12 02:28:56,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:28:56,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-12 02:28:56,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 502 transitions. [2023-11-12 02:28:56,270 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5040160642570282 [2023-11-12 02:28:56,271 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 502 transitions. [2023-11-12 02:28:56,271 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 502 transitions. [2023-11-12 02:28:56,272 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:28:56,272 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 502 transitions. [2023-11-12 02:28:56,274 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 125.5) internal successors, (502), 4 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:28:56,277 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 249.0) internal successors, (1245), 5 states have internal predecessors, (1245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:28:56,278 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 249.0) internal successors, (1245), 5 states have internal predecessors, (1245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:28:56,278 INFO L175 Difference]: Start difference. First operand has 41 places, 34 transitions, 118 flow. Second operand 4 states and 502 transitions. [2023-11-12 02:28:56,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 62 transitions, 320 flow [2023-11-12 02:28:56,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 62 transitions, 298 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:28:56,340 INFO L231 Difference]: Finished difference. Result has 45 places, 38 transitions, 162 flow [2023-11-12 02:28:56,340 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=249, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=162, PETRI_PLACES=45, PETRI_TRANSITIONS=38} [2023-11-12 02:28:56,341 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 2 predicate places. [2023-11-12 02:28:56,345 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 38 transitions, 162 flow [2023-11-12 02:28:56,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 114.0) internal successors, (456), 4 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:28:56,346 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:28:56,346 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:28:56,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 02:28:56,346 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-12 02:28:56,347 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:28:56,347 INFO L85 PathProgramCache]: Analyzing trace with hash -2023104021, now seen corresponding path program 1 times [2023-11-12 02:28:56,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:28:56,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214198075] [2023-11-12 02:28:56,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:28:56,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:28:56,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:28:56,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:28:56,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:28:56,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214198075] [2023-11-12 02:28:56,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214198075] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:28:56,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:28:56,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:28:56,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134654091] [2023-11-12 02:28:56,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:28:56,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:28:56,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:28:56,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:28:56,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:28:56,612 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 249 [2023-11-12 02:28:56,614 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 38 transitions, 162 flow. Second operand has 4 states, 4 states have (on average 114.25) internal successors, (457), 4 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:28:56,614 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:28:56,614 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 249 [2023-11-12 02:28:56,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:28:59,121 INFO L124 PetriNetUnfolderBase]: 13066/17797 cut-off events. [2023-11-12 02:28:59,121 INFO L125 PetriNetUnfolderBase]: For 10868/10868 co-relation queries the response was YES. [2023-11-12 02:28:59,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46038 conditions, 17797 events. 13066/17797 cut-off events. For 10868/10868 co-relation queries the response was YES. Maximal size of possible extension queue 548. Compared 90860 event pairs, 1906 based on Foata normal form. 40/17837 useless extension candidates. Maximal degree in co-relation 46023. Up to 11755 conditions per place. [2023-11-12 02:28:59,246 INFO L140 encePairwiseOnDemand]: 241/249 looper letters, 60 selfloop transitions, 16 changer transitions 0/76 dead transitions. [2023-11-12 02:28:59,246 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 76 transitions, 434 flow [2023-11-12 02:28:59,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:28:59,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-12 02:28:59,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 512 transitions. [2023-11-12 02:28:59,250 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5140562248995983 [2023-11-12 02:28:59,250 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 512 transitions. [2023-11-12 02:28:59,250 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 512 transitions. [2023-11-12 02:28:59,251 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:28:59,251 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 512 transitions. [2023-11-12 02:28:59,253 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 128.0) internal successors, (512), 4 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:28:59,257 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 249.0) internal successors, (1245), 5 states have internal predecessors, (1245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:28:59,258 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 249.0) internal successors, (1245), 5 states have internal predecessors, (1245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:28:59,258 INFO L175 Difference]: Start difference. First operand has 45 places, 38 transitions, 162 flow. Second operand 4 states and 512 transitions. [2023-11-12 02:28:59,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 76 transitions, 434 flow [2023-11-12 02:28:59,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 76 transitions, 429 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:28:59,302 INFO L231 Difference]: Finished difference. Result has 49 places, 44 transitions, 255 flow [2023-11-12 02:28:59,303 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=249, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=255, PETRI_PLACES=49, PETRI_TRANSITIONS=44} [2023-11-12 02:28:59,305 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 6 predicate places. [2023-11-12 02:28:59,306 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 44 transitions, 255 flow [2023-11-12 02:28:59,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 114.25) internal successors, (457), 4 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:28:59,307 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:28:59,307 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:28:59,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 02:28:59,307 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-12 02:28:59,308 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:28:59,308 INFO L85 PathProgramCache]: Analyzing trace with hash 1708286373, now seen corresponding path program 1 times [2023-11-12 02:28:59,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:28:59,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719355121] [2023-11-12 02:28:59,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:28:59,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:28:59,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:28:59,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:28:59,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:28:59,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719355121] [2023-11-12 02:28:59,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719355121] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:28:59,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:28:59,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:28:59,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004682744] [2023-11-12 02:28:59,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:28:59,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:28:59,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:28:59,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:28:59,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:28:59,589 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 249 [2023-11-12 02:28:59,590 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 44 transitions, 255 flow. Second operand has 4 states, 4 states have (on average 114.5) internal successors, (458), 4 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:28:59,590 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:28:59,590 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 249 [2023-11-12 02:28:59,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:29:01,243 INFO L124 PetriNetUnfolderBase]: 8742/12798 cut-off events. [2023-11-12 02:29:01,243 INFO L125 PetriNetUnfolderBase]: For 11109/11726 co-relation queries the response was YES. [2023-11-12 02:29:01,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33977 conditions, 12798 events. 8742/12798 cut-off events. For 11109/11726 co-relation queries the response was YES. Maximal size of possible extension queue 605. Compared 76655 event pairs, 1478 based on Foata normal form. 1194/13763 useless extension candidates. Maximal degree in co-relation 33959. Up to 7904 conditions per place. [2023-11-12 02:29:01,356 INFO L140 encePairwiseOnDemand]: 242/249 looper letters, 88 selfloop transitions, 10 changer transitions 0/110 dead transitions. [2023-11-12 02:29:01,357 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 110 transitions, 750 flow [2023-11-12 02:29:01,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:29:01,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-12 02:29:01,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 631 transitions. [2023-11-12 02:29:01,360 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5068273092369477 [2023-11-12 02:29:01,361 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 631 transitions. [2023-11-12 02:29:01,361 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 631 transitions. [2023-11-12 02:29:01,362 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:29:01,362 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 631 transitions. [2023-11-12 02:29:01,364 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 126.2) internal successors, (631), 5 states have internal predecessors, (631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:01,368 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 249.0) internal successors, (1494), 6 states have internal predecessors, (1494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:01,370 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 249.0) internal successors, (1494), 6 states have internal predecessors, (1494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:01,370 INFO L175 Difference]: Start difference. First operand has 49 places, 44 transitions, 255 flow. Second operand 5 states and 631 transitions. [2023-11-12 02:29:01,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 110 transitions, 750 flow [2023-11-12 02:29:01,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 110 transitions, 750 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-12 02:29:01,393 INFO L231 Difference]: Finished difference. Result has 56 places, 53 transitions, 330 flow [2023-11-12 02:29:01,393 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=249, PETRI_DIFFERENCE_MINUEND_FLOW=255, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=330, PETRI_PLACES=56, PETRI_TRANSITIONS=53} [2023-11-12 02:29:01,394 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 13 predicate places. [2023-11-12 02:29:01,394 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 53 transitions, 330 flow [2023-11-12 02:29:01,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 114.5) internal successors, (458), 4 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:01,395 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:29:01,395 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:29:01,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 02:29:01,396 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-12 02:29:01,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:29:01,396 INFO L85 PathProgramCache]: Analyzing trace with hash 1772555049, now seen corresponding path program 1 times [2023-11-12 02:29:01,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:29:01,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758102552] [2023-11-12 02:29:01,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:29:01,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:29:01,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:29:01,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:29:01,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:29:01,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758102552] [2023-11-12 02:29:01,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758102552] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:29:01,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:29:01,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:29:01,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076801032] [2023-11-12 02:29:01,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:29:01,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:29:01,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:29:01,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:29:01,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:29:01,642 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 249 [2023-11-12 02:29:01,643 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 53 transitions, 330 flow. Second operand has 4 states, 4 states have (on average 115.25) internal successors, (461), 4 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:01,643 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:29:01,643 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 249 [2023-11-12 02:29:01,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:29:04,659 INFO L124 PetriNetUnfolderBase]: 14422/20478 cut-off events. [2023-11-12 02:29:04,659 INFO L125 PetriNetUnfolderBase]: For 30688/30688 co-relation queries the response was YES. [2023-11-12 02:29:04,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69913 conditions, 20478 events. 14422/20478 cut-off events. For 30688/30688 co-relation queries the response was YES. Maximal size of possible extension queue 723. Compared 117374 event pairs, 3683 based on Foata normal form. 204/20682 useless extension candidates. Maximal degree in co-relation 69890. Up to 11392 conditions per place. [2023-11-12 02:29:04,789 INFO L140 encePairwiseOnDemand]: 243/249 looper letters, 67 selfloop transitions, 11 changer transitions 14/92 dead transitions. [2023-11-12 02:29:04,789 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 92 transitions, 671 flow [2023-11-12 02:29:04,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:29:04,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-12 02:29:04,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 508 transitions. [2023-11-12 02:29:04,792 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5100401606425703 [2023-11-12 02:29:04,793 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 508 transitions. [2023-11-12 02:29:04,793 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 508 transitions. [2023-11-12 02:29:04,793 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:29:04,794 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 508 transitions. [2023-11-12 02:29:04,795 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 127.0) internal successors, (508), 4 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:04,798 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 249.0) internal successors, (1245), 5 states have internal predecessors, (1245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:04,799 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 249.0) internal successors, (1245), 5 states have internal predecessors, (1245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:04,799 INFO L175 Difference]: Start difference. First operand has 56 places, 53 transitions, 330 flow. Second operand 4 states and 508 transitions. [2023-11-12 02:29:04,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 92 transitions, 671 flow [2023-11-12 02:29:04,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 92 transitions, 662 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:29:04,958 INFO L231 Difference]: Finished difference. Result has 59 places, 46 transitions, 308 flow [2023-11-12 02:29:04,959 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=249, PETRI_DIFFERENCE_MINUEND_FLOW=325, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=308, PETRI_PLACES=59, PETRI_TRANSITIONS=46} [2023-11-12 02:29:04,961 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 16 predicate places. [2023-11-12 02:29:04,961 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 46 transitions, 308 flow [2023-11-12 02:29:04,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 115.25) internal successors, (461), 4 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:04,962 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:29:04,962 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:29:04,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-12 02:29:04,963 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-12 02:29:04,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:29:04,964 INFO L85 PathProgramCache]: Analyzing trace with hash 126169881, now seen corresponding path program 1 times [2023-11-12 02:29:04,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:29:04,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479873101] [2023-11-12 02:29:04,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:29:04,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:29:04,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:29:05,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:29:05,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:29:05,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479873101] [2023-11-12 02:29:05,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479873101] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:29:05,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:29:05,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:29:05,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057666402] [2023-11-12 02:29:05,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:29:05,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:29:05,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:29:05,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:29:05,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:29:05,293 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 249 [2023-11-12 02:29:05,294 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 46 transitions, 308 flow. Second operand has 5 states, 5 states have (on average 112.4) internal successors, (562), 5 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:05,294 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:29:05,294 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 249 [2023-11-12 02:29:05,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:29:07,593 INFO L124 PetriNetUnfolderBase]: 12927/18702 cut-off events. [2023-11-12 02:29:07,593 INFO L125 PetriNetUnfolderBase]: For 34300/34300 co-relation queries the response was YES. [2023-11-12 02:29:07,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63040 conditions, 18702 events. 12927/18702 cut-off events. For 34300/34300 co-relation queries the response was YES. Maximal size of possible extension queue 769. Compared 111317 event pairs, 944 based on Foata normal form. 204/18906 useless extension candidates. Maximal degree in co-relation 63015. Up to 7557 conditions per place. [2023-11-12 02:29:07,703 INFO L140 encePairwiseOnDemand]: 240/249 looper letters, 94 selfloop transitions, 22 changer transitions 8/124 dead transitions. [2023-11-12 02:29:07,703 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 124 transitions, 929 flow [2023-11-12 02:29:07,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:29:07,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-12 02:29:07,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 749 transitions. [2023-11-12 02:29:07,707 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.501338688085676 [2023-11-12 02:29:07,707 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 749 transitions. [2023-11-12 02:29:07,707 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 749 transitions. [2023-11-12 02:29:07,708 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:29:07,708 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 749 transitions. [2023-11-12 02:29:07,710 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 124.83333333333333) internal successors, (749), 6 states have internal predecessors, (749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:07,714 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 249.0) internal successors, (1743), 7 states have internal predecessors, (1743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:07,715 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 249.0) internal successors, (1743), 7 states have internal predecessors, (1743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:07,715 INFO L175 Difference]: Start difference. First operand has 59 places, 46 transitions, 308 flow. Second operand 6 states and 749 transitions. [2023-11-12 02:29:07,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 124 transitions, 929 flow [2023-11-12 02:29:08,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 124 transitions, 857 flow, removed 16 selfloop flow, removed 3 redundant places. [2023-11-12 02:29:08,050 INFO L231 Difference]: Finished difference. Result has 62 places, 56 transitions, 430 flow [2023-11-12 02:29:08,050 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=249, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=430, PETRI_PLACES=62, PETRI_TRANSITIONS=56} [2023-11-12 02:29:08,051 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 19 predicate places. [2023-11-12 02:29:08,051 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 56 transitions, 430 flow [2023-11-12 02:29:08,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 112.4) internal successors, (562), 5 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:08,052 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:29:08,052 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:29:08,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-12 02:29:08,052 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-12 02:29:08,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:29:08,053 INFO L85 PathProgramCache]: Analyzing trace with hash -1387145931, now seen corresponding path program 2 times [2023-11-12 02:29:08,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:29:08,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127295519] [2023-11-12 02:29:08,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:29:08,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:29:08,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:29:08,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:29:08,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:29:08,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127295519] [2023-11-12 02:29:08,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127295519] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:29:08,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:29:08,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:29:08,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513785027] [2023-11-12 02:29:08,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:29:08,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:29:08,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:29:08,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:29:08,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:29:08,279 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 249 [2023-11-12 02:29:08,280 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 56 transitions, 430 flow. Second operand has 5 states, 5 states have (on average 114.2) internal successors, (571), 5 states have internal predecessors, (571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:08,280 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:29:08,280 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 249 [2023-11-12 02:29:08,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:29:10,062 INFO L124 PetriNetUnfolderBase]: 7802/12164 cut-off events. [2023-11-12 02:29:10,062 INFO L125 PetriNetUnfolderBase]: For 14104/14257 co-relation queries the response was YES. [2023-11-12 02:29:10,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38835 conditions, 12164 events. 7802/12164 cut-off events. For 14104/14257 co-relation queries the response was YES. Maximal size of possible extension queue 612. Compared 79653 event pairs, 1157 based on Foata normal form. 1274/13305 useless extension candidates. Maximal degree in co-relation 38808. Up to 4605 conditions per place. [2023-11-12 02:29:10,123 INFO L140 encePairwiseOnDemand]: 242/249 looper letters, 108 selfloop transitions, 14 changer transitions 13/151 dead transitions. [2023-11-12 02:29:10,123 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 151 transitions, 1306 flow [2023-11-12 02:29:10,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:29:10,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-12 02:29:10,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 760 transitions. [2023-11-12 02:29:10,132 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5087014725568942 [2023-11-12 02:29:10,133 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 760 transitions. [2023-11-12 02:29:10,133 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 760 transitions. [2023-11-12 02:29:10,135 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:29:10,135 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 760 transitions. [2023-11-12 02:29:10,139 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 126.66666666666667) internal successors, (760), 6 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:10,143 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 249.0) internal successors, (1743), 7 states have internal predecessors, (1743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:10,143 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 249.0) internal successors, (1743), 7 states have internal predecessors, (1743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:10,144 INFO L175 Difference]: Start difference. First operand has 62 places, 56 transitions, 430 flow. Second operand 6 states and 760 transitions. [2023-11-12 02:29:10,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 151 transitions, 1306 flow [2023-11-12 02:29:10,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 151 transitions, 1294 flow, removed 6 selfloop flow, removed 0 redundant places. [2023-11-12 02:29:10,180 INFO L231 Difference]: Finished difference. Result has 70 places, 64 transitions, 533 flow [2023-11-12 02:29:10,180 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=249, PETRI_DIFFERENCE_MINUEND_FLOW=426, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=533, PETRI_PLACES=70, PETRI_TRANSITIONS=64} [2023-11-12 02:29:10,184 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 27 predicate places. [2023-11-12 02:29:10,185 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 64 transitions, 533 flow [2023-11-12 02:29:10,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 114.2) internal successors, (571), 5 states have internal predecessors, (571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:10,187 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:29:10,187 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:29:10,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-12 02:29:10,188 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-12 02:29:10,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:29:10,189 INFO L85 PathProgramCache]: Analyzing trace with hash 359635290, now seen corresponding path program 1 times [2023-11-12 02:29:10,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:29:10,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565072992] [2023-11-12 02:29:10,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:29:10,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:29:10,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:29:10,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:29:10,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:29:10,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565072992] [2023-11-12 02:29:10,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565072992] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:29:10,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:29:10,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:29:10,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240663222] [2023-11-12 02:29:10,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:29:10,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:29:10,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:29:10,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:29:10,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:29:10,593 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 249 [2023-11-12 02:29:10,594 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 64 transitions, 533 flow. Second operand has 6 states, 6 states have (on average 114.16666666666667) internal successors, (685), 6 states have internal predecessors, (685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:10,595 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:29:10,595 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 249 [2023-11-12 02:29:10,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:29:12,193 INFO L124 PetriNetUnfolderBase]: 6811/10735 cut-off events. [2023-11-12 02:29:12,193 INFO L125 PetriNetUnfolderBase]: For 19172/19270 co-relation queries the response was YES. [2023-11-12 02:29:12,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40889 conditions, 10735 events. 6811/10735 cut-off events. For 19172/19270 co-relation queries the response was YES. Maximal size of possible extension queue 571. Compared 70591 event pairs, 946 based on Foata normal form. 494/11103 useless extension candidates. Maximal degree in co-relation 40857. Up to 4248 conditions per place. [2023-11-12 02:29:12,257 INFO L140 encePairwiseOnDemand]: 242/249 looper letters, 116 selfloop transitions, 21 changer transitions 31/181 dead transitions. [2023-11-12 02:29:12,257 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 181 transitions, 1595 flow [2023-11-12 02:29:12,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-12 02:29:12,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-12 02:29:12,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1013 transitions. [2023-11-12 02:29:12,262 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5085341365461847 [2023-11-12 02:29:12,262 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1013 transitions. [2023-11-12 02:29:12,263 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1013 transitions. [2023-11-12 02:29:12,264 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:29:12,264 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1013 transitions. [2023-11-12 02:29:12,267 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 126.625) internal successors, (1013), 8 states have internal predecessors, (1013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:12,271 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 249.0) internal successors, (2241), 9 states have internal predecessors, (2241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:12,273 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 249.0) internal successors, (2241), 9 states have internal predecessors, (2241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:12,273 INFO L175 Difference]: Start difference. First operand has 70 places, 64 transitions, 533 flow. Second operand 8 states and 1013 transitions. [2023-11-12 02:29:12,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 181 transitions, 1595 flow [2023-11-12 02:29:13,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 181 transitions, 1542 flow, removed 18 selfloop flow, removed 2 redundant places. [2023-11-12 02:29:13,393 INFO L231 Difference]: Finished difference. Result has 78 places, 68 transitions, 591 flow [2023-11-12 02:29:13,393 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=249, PETRI_DIFFERENCE_MINUEND_FLOW=484, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=591, PETRI_PLACES=78, PETRI_TRANSITIONS=68} [2023-11-12 02:29:13,394 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 35 predicate places. [2023-11-12 02:29:13,394 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 68 transitions, 591 flow [2023-11-12 02:29:13,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 114.16666666666667) internal successors, (685), 6 states have internal predecessors, (685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:13,395 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:29:13,395 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:29:13,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-12 02:29:13,395 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-12 02:29:13,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:29:13,396 INFO L85 PathProgramCache]: Analyzing trace with hash 752341998, now seen corresponding path program 1 times [2023-11-12 02:29:13,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:29:13,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718746736] [2023-11-12 02:29:13,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:29:13,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:29:13,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:29:14,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:29:14,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:29:14,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718746736] [2023-11-12 02:29:14,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718746736] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:29:14,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:29:14,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:29:14,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169402458] [2023-11-12 02:29:14,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:29:14,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:29:14,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:29:14,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:29:14,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:29:14,540 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 249 [2023-11-12 02:29:14,541 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 68 transitions, 591 flow. Second operand has 7 states, 7 states have (on average 119.14285714285714) internal successors, (834), 7 states have internal predecessors, (834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:14,541 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:29:14,541 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 249 [2023-11-12 02:29:14,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:29:17,012 INFO L124 PetriNetUnfolderBase]: 10143/16569 cut-off events. [2023-11-12 02:29:17,012 INFO L125 PetriNetUnfolderBase]: For 51213/51311 co-relation queries the response was YES. [2023-11-12 02:29:17,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68152 conditions, 16569 events. 10143/16569 cut-off events. For 51213/51311 co-relation queries the response was YES. Maximal size of possible extension queue 930. Compared 124595 event pairs, 1939 based on Foata normal form. 96/16540 useless extension candidates. Maximal degree in co-relation 68117. Up to 6099 conditions per place. [2023-11-12 02:29:17,121 INFO L140 encePairwiseOnDemand]: 242/249 looper letters, 126 selfloop transitions, 7 changer transitions 80/226 dead transitions. [2023-11-12 02:29:17,121 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 226 transitions, 2390 flow [2023-11-12 02:29:17,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:29:17,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-12 02:29:17,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 902 transitions. [2023-11-12 02:29:17,125 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5174985656913368 [2023-11-12 02:29:17,125 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 902 transitions. [2023-11-12 02:29:17,125 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 902 transitions. [2023-11-12 02:29:17,126 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:29:17,127 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 902 transitions. [2023-11-12 02:29:17,130 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 128.85714285714286) internal successors, (902), 7 states have internal predecessors, (902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:17,133 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 249.0) internal successors, (1992), 8 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:17,134 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 249.0) internal successors, (1992), 8 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:17,135 INFO L175 Difference]: Start difference. First operand has 78 places, 68 transitions, 591 flow. Second operand 7 states and 902 transitions. [2023-11-12 02:29:17,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 226 transitions, 2390 flow [2023-11-12 02:29:21,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 226 transitions, 1996 flow, removed 142 selfloop flow, removed 4 redundant places. [2023-11-12 02:29:21,205 INFO L231 Difference]: Finished difference. Result has 83 places, 73 transitions, 565 flow [2023-11-12 02:29:21,205 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=249, PETRI_DIFFERENCE_MINUEND_FLOW=502, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=565, PETRI_PLACES=83, PETRI_TRANSITIONS=73} [2023-11-12 02:29:21,206 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 40 predicate places. [2023-11-12 02:29:21,206 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 73 transitions, 565 flow [2023-11-12 02:29:21,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 119.14285714285714) internal successors, (834), 7 states have internal predecessors, (834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:21,207 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:29:21,207 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:29:21,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-12 02:29:21,207 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-12 02:29:21,208 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:29:21,208 INFO L85 PathProgramCache]: Analyzing trace with hash -717737358, now seen corresponding path program 2 times [2023-11-12 02:29:21,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:29:21,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369069320] [2023-11-12 02:29:21,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:29:21,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:29:21,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:29:21,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:29:21,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:29:21,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369069320] [2023-11-12 02:29:21,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369069320] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:29:21,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:29:21,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 02:29:21,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13615220] [2023-11-12 02:29:21,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:29:21,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:29:21,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:29:21,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:29:21,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:29:21,635 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 249 [2023-11-12 02:29:21,636 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 73 transitions, 565 flow. Second operand has 7 states, 7 states have (on average 114.14285714285714) internal successors, (799), 7 states have internal predecessors, (799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:21,636 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:29:21,636 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 249 [2023-11-12 02:29:21,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:29:23,609 INFO L124 PetriNetUnfolderBase]: 7612/12441 cut-off events. [2023-11-12 02:29:23,609 INFO L125 PetriNetUnfolderBase]: For 26035/26162 co-relation queries the response was YES. [2023-11-12 02:29:23,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47583 conditions, 12441 events. 7612/12441 cut-off events. For 26035/26162 co-relation queries the response was YES. Maximal size of possible extension queue 706. Compared 89113 event pairs, 894 based on Foata normal form. 177/12480 useless extension candidates. Maximal degree in co-relation 47550. Up to 2818 conditions per place. [2023-11-12 02:29:23,686 INFO L140 encePairwiseOnDemand]: 242/249 looper letters, 97 selfloop transitions, 26 changer transitions 63/195 dead transitions. [2023-11-12 02:29:23,687 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 195 transitions, 1698 flow [2023-11-12 02:29:23,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-12 02:29:23,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-12 02:29:23,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1234 transitions. [2023-11-12 02:29:23,692 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4955823293172691 [2023-11-12 02:29:23,692 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1234 transitions. [2023-11-12 02:29:23,692 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1234 transitions. [2023-11-12 02:29:23,694 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:29:23,694 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1234 transitions. [2023-11-12 02:29:23,698 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 123.4) internal successors, (1234), 10 states have internal predecessors, (1234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:23,703 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 249.0) internal successors, (2739), 11 states have internal predecessors, (2739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:23,704 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 249.0) internal successors, (2739), 11 states have internal predecessors, (2739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:23,704 INFO L175 Difference]: Start difference. First operand has 83 places, 73 transitions, 565 flow. Second operand 10 states and 1234 transitions. [2023-11-12 02:29:23,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 195 transitions, 1698 flow [2023-11-12 02:29:25,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 195 transitions, 1663 flow, removed 10 selfloop flow, removed 3 redundant places. [2023-11-12 02:29:25,081 INFO L231 Difference]: Finished difference. Result has 90 places, 62 transitions, 487 flow [2023-11-12 02:29:25,082 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=249, PETRI_DIFFERENCE_MINUEND_FLOW=533, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=487, PETRI_PLACES=90, PETRI_TRANSITIONS=62} [2023-11-12 02:29:25,082 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 47 predicate places. [2023-11-12 02:29:25,082 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 62 transitions, 487 flow [2023-11-12 02:29:25,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 114.14285714285714) internal successors, (799), 7 states have internal predecessors, (799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:25,083 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:29:25,083 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] [2023-11-12 02:29:25,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-12 02:29:25,084 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-12 02:29:25,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:29:25,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1280533668, now seen corresponding path program 1 times [2023-11-12 02:29:25,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:29:25,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998098921] [2023-11-12 02:29:25,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:29:25,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:29:25,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:29:25,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:29:25,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:29:25,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998098921] [2023-11-12 02:29:25,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998098921] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:29:25,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:29:25,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:29:25,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474476007] [2023-11-12 02:29:25,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:29:25,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:29:25,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:29:25,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:29:25,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:29:25,371 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 249 [2023-11-12 02:29:25,372 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 62 transitions, 487 flow. Second operand has 4 states, 4 states have (on average 123.5) internal successors, (494), 4 states have internal predecessors, (494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:25,372 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:29:25,373 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 249 [2023-11-12 02:29:25,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand