./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/bench-exp2x9.wvr.c --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_0ec93547-32f5-4614-8159-4515c83a096d/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ec93547-32f5-4614-8159-4515c83a096d/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_0ec93547-32f5-4614-8159-4515c83a096d/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ec93547-32f5-4614-8159-4515c83a096d/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/bench-exp2x9.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ec93547-32f5-4614-8159-4515c83a096d/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_0ec93547-32f5-4614-8159-4515c83a096d/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 af523f24b0126267447f5590b01302c6de6f439c37a01df1dbf66192a849a6d6 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:12:59,268 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:12:59,384 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ec93547-32f5-4614-8159-4515c83a096d/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-12 02:12:59,392 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:12:59,393 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:12:59,429 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:12:59,430 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:12:59,430 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:12:59,431 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:12:59,436 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:12:59,438 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:12:59,439 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:12:59,439 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:12:59,441 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:12:59,441 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:12:59,442 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:12:59,442 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:12:59,443 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:12:59,443 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:12:59,444 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:12:59,444 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:12:59,445 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:12:59,445 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:12:59,446 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:12:59,446 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:12:59,447 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:12:59,448 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:12:59,448 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:12:59,449 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:12:59,449 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:12:59,450 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:12:59,451 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:12:59,451 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:12:59,451 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:12:59,452 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:12:59,452 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:12:59,452 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:12:59,453 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:12:59,453 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:12:59,453 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_0ec93547-32f5-4614-8159-4515c83a096d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ec93547-32f5-4614-8159-4515c83a096d/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> af523f24b0126267447f5590b01302c6de6f439c37a01df1dbf66192a849a6d6 [2023-11-12 02:12:59,796 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:12:59,827 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:12:59,830 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:12:59,831 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:12:59,832 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:12:59,833 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ec93547-32f5-4614-8159-4515c83a096d/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/weaver/bench-exp2x9.wvr.c [2023-11-12 02:13:03,169 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:13:03,367 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:13:03,368 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ec93547-32f5-4614-8159-4515c83a096d/sv-benchmarks/c/weaver/bench-exp2x9.wvr.c [2023-11-12 02:13:03,378 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ec93547-32f5-4614-8159-4515c83a096d/bin/uautomizer-verify-uTZkv6EMXl/data/781f29063/e156391777634a71bf144aa3f8bee9d2/FLAG521233c3f [2023-11-12 02:13:03,393 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ec93547-32f5-4614-8159-4515c83a096d/bin/uautomizer-verify-uTZkv6EMXl/data/781f29063/e156391777634a71bf144aa3f8bee9d2 [2023-11-12 02:13:03,396 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:13:03,398 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:13:03,399 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:13:03,399 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:13:03,405 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:13:03,406 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:13:03" (1/1) ... [2023-11-12 02:13:03,407 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d2a90ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:13:03, skipping insertion in model container [2023-11-12 02:13:03,407 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:13:03" (1/1) ... [2023-11-12 02:13:03,434 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:13:03,628 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_0ec93547-32f5-4614-8159-4515c83a096d/sv-benchmarks/c/weaver/bench-exp2x9.wvr.c[2721,2734] [2023-11-12 02:13:03,633 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:13:03,643 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:13:03,671 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_0ec93547-32f5-4614-8159-4515c83a096d/sv-benchmarks/c/weaver/bench-exp2x9.wvr.c[2721,2734] [2023-11-12 02:13:03,672 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:13:03,688 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:13:03,689 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:13:03 WrapperNode [2023-11-12 02:13:03,689 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:13:03,690 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:13:03,690 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:13:03,691 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:13:03,698 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:13:03" (1/1) ... [2023-11-12 02:13:03,706 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:13:03" (1/1) ... [2023-11-12 02:13:03,731 INFO L138 Inliner]: procedures = 20, calls = 32, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 95 [2023-11-12 02:13:03,732 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:13:03,733 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:13:03,733 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:13:03,733 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:13:03,742 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:13:03" (1/1) ... [2023-11-12 02:13:03,743 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:13:03" (1/1) ... [2023-11-12 02:13:03,746 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:13:03" (1/1) ... [2023-11-12 02:13:03,746 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:13:03" (1/1) ... [2023-11-12 02:13:03,752 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:13:03" (1/1) ... [2023-11-12 02:13:03,756 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:13:03" (1/1) ... [2023-11-12 02:13:03,758 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:13:03" (1/1) ... [2023-11-12 02:13:03,760 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:13:03" (1/1) ... [2023-11-12 02:13:03,763 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:13:03,764 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:13:03,764 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:13:03,764 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:13:03,765 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:13:03" (1/1) ... [2023-11-12 02:13:03,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:13:03,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ec93547-32f5-4614-8159-4515c83a096d/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:13:03,810 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ec93547-32f5-4614-8159-4515c83a096d/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:13:03,845 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ec93547-32f5-4614-8159-4515c83a096d/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:13:03,857 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:13:03,857 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-12 02:13:03,858 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-12 02:13:03,858 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-12 02:13:03,859 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-12 02:13:03,859 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-12 02:13:03,859 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-12 02:13:03,859 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-11-12 02:13:03,859 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-11-12 02:13:03,860 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:13:03,860 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 02:13:03,860 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 02:13:03,860 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:13:03,862 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:13:03,862 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 02:13:03,863 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 02:13:03,864 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 02:13:03,999 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:13:04,001 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:13:04,303 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:13:04,312 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:13:04,312 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-12 02:13:04,314 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:13:04 BoogieIcfgContainer [2023-11-12 02:13:04,315 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:13:04,317 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:13:04,318 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:13:04,321 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:13:04,321 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:13:03" (1/3) ... [2023-11-12 02:13:04,322 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8ec9eca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:13:04, skipping insertion in model container [2023-11-12 02:13:04,322 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:13:03" (2/3) ... [2023-11-12 02:13:04,322 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8ec9eca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:13:04, skipping insertion in model container [2023-11-12 02:13:04,323 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:13:04" (3/3) ... [2023-11-12 02:13:04,324 INFO L112 eAbstractionObserver]: Analyzing ICFG bench-exp2x9.wvr.c [2023-11-12 02:13:04,332 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-12 02:13:04,343 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:13:04,344 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 02:13:04,344 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-12 02:13:04,511 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-12 02:13:04,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 157 places, 154 transitions, 336 flow [2023-11-12 02:13:04,656 INFO L124 PetriNetUnfolderBase]: 10/150 cut-off events. [2023-11-12 02:13:04,656 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-12 02:13:04,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 167 conditions, 150 events. 10/150 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 143 event pairs, 0 based on Foata normal form. 0/139 useless extension candidates. Maximal degree in co-relation 106. Up to 2 conditions per place. [2023-11-12 02:13:04,670 INFO L82 GeneralOperation]: Start removeDead. Operand has 157 places, 154 transitions, 336 flow [2023-11-12 02:13:04,682 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 140 places, 137 transitions, 298 flow [2023-11-12 02:13:04,686 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-12 02:13:04,696 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 140 places, 137 transitions, 298 flow [2023-11-12 02:13:04,699 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 140 places, 137 transitions, 298 flow [2023-11-12 02:13:04,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 140 places, 137 transitions, 298 flow [2023-11-12 02:13:04,743 INFO L124 PetriNetUnfolderBase]: 10/137 cut-off events. [2023-11-12 02:13:04,744 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-12 02:13:04,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154 conditions, 137 events. 10/137 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 142 event pairs, 0 based on Foata normal form. 0/127 useless extension candidates. Maximal degree in co-relation 106. Up to 2 conditions per place. [2023-11-12 02:13:04,751 INFO L119 LiptonReduction]: Number of co-enabled transitions 3744 [2023-11-12 02:13:09,732 INFO L134 LiptonReduction]: Checked pairs total: 3420 [2023-11-12 02:13:09,732 INFO L136 LiptonReduction]: Total number of compositions: 122 [2023-11-12 02:13:09,748 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:13:09,755 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;@6197dde8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:13:09,756 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-11-12 02:13:09,767 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-12 02:13:09,767 INFO L124 PetriNetUnfolderBase]: 4/28 cut-off events. [2023-11-12 02:13:09,767 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-12 02:13:09,767 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:13:09,768 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:13:09,769 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-12 02:13:09,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:13:09,780 INFO L85 PathProgramCache]: Analyzing trace with hash 75856159, now seen corresponding path program 1 times [2023-11-12 02:13:09,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:13:09,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399365363] [2023-11-12 02:13:09,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:13:09,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:13:10,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:13:10,410 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 02:13:10,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:13:10,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399365363] [2023-11-12 02:13:10,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399365363] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:13:10,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:13:10,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:13:10,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837288845] [2023-11-12 02:13:10,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:13:10,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:13:10,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:13:10,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:13:10,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:13:10,614 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 276 [2023-11-12 02:13:10,617 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 29 transitions, 82 flow. Second operand has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 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 02:13:10,618 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:13:10,618 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 276 [2023-11-12 02:13:10,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:13:11,001 INFO L124 PetriNetUnfolderBase]: 1537/1954 cut-off events. [2023-11-12 02:13:11,001 INFO L125 PetriNetUnfolderBase]: For 161/161 co-relation queries the response was YES. [2023-11-12 02:13:11,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4056 conditions, 1954 events. 1537/1954 cut-off events. For 161/161 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 6408 event pairs, 141 based on Foata normal form. 1/1124 useless extension candidates. Maximal degree in co-relation 3091. Up to 1733 conditions per place. [2023-11-12 02:13:11,021 INFO L140 encePairwiseOnDemand]: 270/276 looper letters, 41 selfloop transitions, 5 changer transitions 1/51 dead transitions. [2023-11-12 02:13:11,021 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 51 transitions, 241 flow [2023-11-12 02:13:11,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:13:11,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:13:11,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 357 transitions. [2023-11-12 02:13:11,038 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4311594202898551 [2023-11-12 02:13:11,039 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 357 transitions. [2023-11-12 02:13:11,040 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 357 transitions. [2023-11-12 02:13:11,042 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:13:11,045 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 357 transitions. [2023-11-12 02:13:11,048 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 119.0) internal successors, (357), 3 states have internal predecessors, (357), 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 02:13:11,054 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 276.0) internal successors, (1104), 4 states have internal predecessors, (1104), 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 02:13:11,055 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 276.0) internal successors, (1104), 4 states have internal predecessors, (1104), 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 02:13:11,057 INFO L175 Difference]: Start difference. First operand has 38 places, 29 transitions, 82 flow. Second operand 3 states and 357 transitions. [2023-11-12 02:13:11,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 51 transitions, 241 flow [2023-11-12 02:13:11,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 51 transitions, 211 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-11-12 02:13:11,066 INFO L231 Difference]: Finished difference. Result has 33 places, 33 transitions, 99 flow [2023-11-12 02:13:11,068 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=276, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=99, PETRI_PLACES=33, PETRI_TRANSITIONS=33} [2023-11-12 02:13:11,072 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, -5 predicate places. [2023-11-12 02:13:11,072 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 33 transitions, 99 flow [2023-11-12 02:13:11,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 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 02:13:11,073 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:13:11,073 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] [2023-11-12 02:13:11,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 02:13:11,074 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-12 02:13:11,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:13:11,075 INFO L85 PathProgramCache]: Analyzing trace with hash 1776852242, now seen corresponding path program 1 times [2023-11-12 02:13:11,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:13:11,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738906845] [2023-11-12 02:13:11,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:13:11,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:13:11,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:13:11,296 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:13:11,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:13:11,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738906845] [2023-11-12 02:13:11,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738906845] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:13:11,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:13:11,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:13:11,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974219896] [2023-11-12 02:13:11,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:13:11,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:13:11,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:13:11,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:13:11,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:13:11,447 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 276 [2023-11-12 02:13:11,448 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 33 transitions, 99 flow. Second operand has 4 states, 4 states have (on average 120.5) internal successors, (482), 4 states have internal predecessors, (482), 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 02:13:11,448 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:13:11,448 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 276 [2023-11-12 02:13:11,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:13:11,859 INFO L124 PetriNetUnfolderBase]: 1755/2276 cut-off events. [2023-11-12 02:13:11,860 INFO L125 PetriNetUnfolderBase]: For 662/662 co-relation queries the response was YES. [2023-11-12 02:13:11,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5628 conditions, 2276 events. 1755/2276 cut-off events. For 662/662 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 7903 event pairs, 94 based on Foata normal form. 38/2258 useless extension candidates. Maximal degree in co-relation 1894. Up to 921 conditions per place. [2023-11-12 02:13:11,879 INFO L140 encePairwiseOnDemand]: 271/276 looper letters, 68 selfloop transitions, 10 changer transitions 0/82 dead transitions. [2023-11-12 02:13:11,879 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 82 transitions, 395 flow [2023-11-12 02:13:11,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:13:11,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-12 02:13:11,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 647 transitions. [2023-11-12 02:13:11,885 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4688405797101449 [2023-11-12 02:13:11,885 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 647 transitions. [2023-11-12 02:13:11,885 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 647 transitions. [2023-11-12 02:13:11,886 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:13:11,886 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 647 transitions. [2023-11-12 02:13:11,889 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 129.4) internal successors, (647), 5 states have internal predecessors, (647), 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 02:13:11,894 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 276.0) internal successors, (1656), 6 states have internal predecessors, (1656), 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 02:13:11,895 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 276.0) internal successors, (1656), 6 states have internal predecessors, (1656), 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 02:13:11,896 INFO L175 Difference]: Start difference. First operand has 33 places, 33 transitions, 99 flow. Second operand 5 states and 647 transitions. [2023-11-12 02:13:11,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 82 transitions, 395 flow [2023-11-12 02:13:11,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 82 transitions, 387 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:13:11,899 INFO L231 Difference]: Finished difference. Result has 38 places, 40 transitions, 159 flow [2023-11-12 02:13:11,899 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=276, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=159, PETRI_PLACES=38, PETRI_TRANSITIONS=40} [2023-11-12 02:13:11,900 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 0 predicate places. [2023-11-12 02:13:11,901 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 40 transitions, 159 flow [2023-11-12 02:13:11,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 120.5) internal successors, (482), 4 states have internal predecessors, (482), 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 02:13:11,901 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:13:11,902 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] [2023-11-12 02:13:11,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 02:13:11,902 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-12 02:13:11,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:13:11,903 INFO L85 PathProgramCache]: Analyzing trace with hash 1875881434, now seen corresponding path program 1 times [2023-11-12 02:13:11,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:13:11,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522059257] [2023-11-12 02:13:11,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:13:11,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:13:11,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:13:12,021 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:13:12,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:13:12,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522059257] [2023-11-12 02:13:12,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522059257] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:13:12,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:13:12,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:13:12,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994744768] [2023-11-12 02:13:12,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:13:12,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:13:12,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:13:12,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:13:12,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:13:12,115 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 276 [2023-11-12 02:13:12,116 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 40 transitions, 159 flow. Second operand has 4 states, 4 states have (on average 120.5) internal successors, (482), 4 states have internal predecessors, (482), 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 02:13:12,116 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:13:12,116 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 276 [2023-11-12 02:13:12,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:13:12,639 INFO L124 PetriNetUnfolderBase]: 2279/3036 cut-off events. [2023-11-12 02:13:12,639 INFO L125 PetriNetUnfolderBase]: For 3510/3510 co-relation queries the response was YES. [2023-11-12 02:13:12,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9545 conditions, 3036 events. 2279/3036 cut-off events. For 3510/3510 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 12614 event pairs, 367 based on Foata normal form. 92/3090 useless extension candidates. Maximal degree in co-relation 3982. Up to 1471 conditions per place. [2023-11-12 02:13:12,672 INFO L140 encePairwiseOnDemand]: 271/276 looper letters, 98 selfloop transitions, 8 changer transitions 0/110 dead transitions. [2023-11-12 02:13:12,672 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 110 transitions, 649 flow [2023-11-12 02:13:12,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:13:12,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-12 02:13:12,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 657 transitions. [2023-11-12 02:13:12,676 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47608695652173916 [2023-11-12 02:13:12,676 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 657 transitions. [2023-11-12 02:13:12,677 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 657 transitions. [2023-11-12 02:13:12,677 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:13:12,677 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 657 transitions. [2023-11-12 02:13:12,680 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 131.4) internal successors, (657), 5 states have internal predecessors, (657), 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 02:13:12,683 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 276.0) internal successors, (1656), 6 states have internal predecessors, (1656), 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 02:13:12,685 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 276.0) internal successors, (1656), 6 states have internal predecessors, (1656), 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 02:13:12,685 INFO L175 Difference]: Start difference. First operand has 38 places, 40 transitions, 159 flow. Second operand 5 states and 657 transitions. [2023-11-12 02:13:12,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 110 transitions, 649 flow [2023-11-12 02:13:12,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 110 transitions, 649 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-12 02:13:12,699 INFO L231 Difference]: Finished difference. Result has 45 places, 45 transitions, 214 flow [2023-11-12 02:13:12,699 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=276, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=214, PETRI_PLACES=45, PETRI_TRANSITIONS=45} [2023-11-12 02:13:12,701 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 7 predicate places. [2023-11-12 02:13:12,704 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 45 transitions, 214 flow [2023-11-12 02:13:12,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 120.5) internal successors, (482), 4 states have internal predecessors, (482), 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 02:13:12,705 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:13:12,706 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] [2023-11-12 02:13:12,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 02:13:12,706 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-12 02:13:12,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:13:12,708 INFO L85 PathProgramCache]: Analyzing trace with hash -138308975, now seen corresponding path program 1 times [2023-11-12 02:13:12,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:13:12,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285010046] [2023-11-12 02:13:12,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:13:12,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:13:12,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:13:12,875 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:13:12,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:13:12,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285010046] [2023-11-12 02:13:12,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285010046] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:13:12,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:13:12,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:13:12,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316230308] [2023-11-12 02:13:12,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:13:12,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:13:12,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:13:12,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:13:12,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:13:12,977 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 276 [2023-11-12 02:13:12,978 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 45 transitions, 214 flow. Second operand has 4 states, 4 states have (on average 120.5) internal successors, (482), 4 states have internal predecessors, (482), 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 02:13:12,978 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:13:12,978 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 276 [2023-11-12 02:13:12,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:13:13,445 INFO L124 PetriNetUnfolderBase]: 2251/3022 cut-off events. [2023-11-12 02:13:13,445 INFO L125 PetriNetUnfolderBase]: For 4795/4795 co-relation queries the response was YES. [2023-11-12 02:13:13,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11014 conditions, 3022 events. 2251/3022 cut-off events. For 4795/4795 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 11837 event pairs, 101 based on Foata normal form. 52/3011 useless extension candidates. Maximal degree in co-relation 5796. Up to 1365 conditions per place. [2023-11-12 02:13:13,534 INFO L140 encePairwiseOnDemand]: 271/276 looper letters, 84 selfloop transitions, 8 changer transitions 0/96 dead transitions. [2023-11-12 02:13:13,534 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 96 transitions, 619 flow [2023-11-12 02:13:13,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:13:13,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-12 02:13:13,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 646 transitions. [2023-11-12 02:13:13,537 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4681159420289855 [2023-11-12 02:13:13,537 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 646 transitions. [2023-11-12 02:13:13,538 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 646 transitions. [2023-11-12 02:13:13,538 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:13:13,538 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 646 transitions. [2023-11-12 02:13:13,540 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 129.2) internal successors, (646), 5 states have internal predecessors, (646), 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 02:13:13,544 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 276.0) internal successors, (1656), 6 states have internal predecessors, (1656), 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 02:13:13,545 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 276.0) internal successors, (1656), 6 states have internal predecessors, (1656), 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 02:13:13,545 INFO L175 Difference]: Start difference. First operand has 45 places, 45 transitions, 214 flow. Second operand 5 states and 646 transitions. [2023-11-12 02:13:13,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 96 transitions, 619 flow [2023-11-12 02:13:13,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 96 transitions, 619 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-12 02:13:13,555 INFO L231 Difference]: Finished difference. Result has 50 places, 44 transitions, 228 flow [2023-11-12 02:13:13,556 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=276, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=228, PETRI_PLACES=50, PETRI_TRANSITIONS=44} [2023-11-12 02:13:13,558 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 12 predicate places. [2023-11-12 02:13:13,558 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 44 transitions, 228 flow [2023-11-12 02:13:13,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 120.5) internal successors, (482), 4 states have internal predecessors, (482), 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 02:13:13,559 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:13:13,559 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] [2023-11-12 02:13:13,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 02:13:13,560 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-12 02:13:13,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:13:13,561 INFO L85 PathProgramCache]: Analyzing trace with hash 1908451668, now seen corresponding path program 2 times [2023-11-12 02:13:13,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:13:13,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432731728] [2023-11-12 02:13:13,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:13:13,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:13:13,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:13:13,679 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:13:13,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:13:13,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432731728] [2023-11-12 02:13:13,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432731728] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:13:13,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:13:13,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:13:13,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939348973] [2023-11-12 02:13:13,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:13:13,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:13:13,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:13:13,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:13:13,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:13:13,770 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 276 [2023-11-12 02:13:13,771 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 44 transitions, 228 flow. Second operand has 4 states, 4 states have (on average 120.5) internal successors, (482), 4 states have internal predecessors, (482), 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 02:13:13,771 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:13:13,771 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 276 [2023-11-12 02:13:13,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:13:14,215 INFO L124 PetriNetUnfolderBase]: 1931/2548 cut-off events. [2023-11-12 02:13:14,215 INFO L125 PetriNetUnfolderBase]: For 5717/5717 co-relation queries the response was YES. [2023-11-12 02:13:14,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9991 conditions, 2548 events. 1931/2548 cut-off events. For 5717/5717 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 9766 event pairs, 177 based on Foata normal form. 34/2571 useless extension candidates. Maximal degree in co-relation 5413. Up to 1030 conditions per place. [2023-11-12 02:13:14,251 INFO L140 encePairwiseOnDemand]: 271/276 looper letters, 94 selfloop transitions, 11 changer transitions 0/109 dead transitions. [2023-11-12 02:13:14,251 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 109 transitions, 756 flow [2023-11-12 02:13:14,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:13:14,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-12 02:13:14,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 651 transitions. [2023-11-12 02:13:14,254 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4717391304347826 [2023-11-12 02:13:14,255 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 651 transitions. [2023-11-12 02:13:14,255 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 651 transitions. [2023-11-12 02:13:14,255 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:13:14,256 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 651 transitions. [2023-11-12 02:13:14,258 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 130.2) internal successors, (651), 5 states have internal predecessors, (651), 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 02:13:14,262 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 276.0) internal successors, (1656), 6 states have internal predecessors, (1656), 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 02:13:14,263 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 276.0) internal successors, (1656), 6 states have internal predecessors, (1656), 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 02:13:14,263 INFO L175 Difference]: Start difference. First operand has 50 places, 44 transitions, 228 flow. Second operand 5 states and 651 transitions. [2023-11-12 02:13:14,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 109 transitions, 756 flow [2023-11-12 02:13:14,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 109 transitions, 739 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:13:14,276 INFO L231 Difference]: Finished difference. Result has 54 places, 49 transitions, 282 flow [2023-11-12 02:13:14,276 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=276, PETRI_DIFFERENCE_MINUEND_FLOW=221, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=282, PETRI_PLACES=54, PETRI_TRANSITIONS=49} [2023-11-12 02:13:14,280 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 16 predicate places. [2023-11-12 02:13:14,280 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 49 transitions, 282 flow [2023-11-12 02:13:14,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 120.5) internal successors, (482), 4 states have internal predecessors, (482), 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 02:13:14,281 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:13:14,281 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] [2023-11-12 02:13:14,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 02:13:14,281 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-12 02:13:14,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:13:14,282 INFO L85 PathProgramCache]: Analyzing trace with hash -553857520, now seen corresponding path program 2 times [2023-11-12 02:13:14,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:13:14,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548407692] [2023-11-12 02:13:14,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:13:14,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:13:14,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:13:14,418 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:13:14,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:13:14,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548407692] [2023-11-12 02:13:14,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548407692] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:13:14,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:13:14,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:13:14,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840064835] [2023-11-12 02:13:14,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:13:14,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:13:14,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:13:14,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:13:14,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:13:14,547 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 276 [2023-11-12 02:13:14,548 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 49 transitions, 282 flow. Second operand has 4 states, 4 states have (on average 120.5) internal successors, (482), 4 states have internal predecessors, (482), 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 02:13:14,548 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:13:14,548 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 276 [2023-11-12 02:13:14,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:13:14,986 INFO L124 PetriNetUnfolderBase]: 1859/2508 cut-off events. [2023-11-12 02:13:14,987 INFO L125 PetriNetUnfolderBase]: For 6155/6155 co-relation queries the response was YES. [2023-11-12 02:13:14,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10389 conditions, 2508 events. 1859/2508 cut-off events. For 6155/6155 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 10133 event pairs, 321 based on Foata normal form. 80/2527 useless extension candidates. Maximal degree in co-relation 5095. Up to 1187 conditions per place. [2023-11-12 02:13:15,019 INFO L140 encePairwiseOnDemand]: 271/276 looper letters, 102 selfloop transitions, 8 changer transitions 0/114 dead transitions. [2023-11-12 02:13:15,020 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 114 transitions, 863 flow [2023-11-12 02:13:15,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:13:15,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-12 02:13:15,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 647 transitions. [2023-11-12 02:13:15,023 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4688405797101449 [2023-11-12 02:13:15,023 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 647 transitions. [2023-11-12 02:13:15,023 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 647 transitions. [2023-11-12 02:13:15,024 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:13:15,024 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 647 transitions. [2023-11-12 02:13:15,026 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 129.4) internal successors, (647), 5 states have internal predecessors, (647), 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 02:13:15,030 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 276.0) internal successors, (1656), 6 states have internal predecessors, (1656), 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 02:13:15,031 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 276.0) internal successors, (1656), 6 states have internal predecessors, (1656), 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 02:13:15,031 INFO L175 Difference]: Start difference. First operand has 54 places, 49 transitions, 282 flow. Second operand 5 states and 647 transitions. [2023-11-12 02:13:15,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 114 transitions, 863 flow [2023-11-12 02:13:15,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 114 transitions, 826 flow, removed 12 selfloop flow, removed 1 redundant places. [2023-11-12 02:13:15,039 INFO L231 Difference]: Finished difference. Result has 59 places, 52 transitions, 319 flow [2023-11-12 02:13:15,040 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=276, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=319, PETRI_PLACES=59, PETRI_TRANSITIONS=52} [2023-11-12 02:13:15,043 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 21 predicate places. [2023-11-12 02:13:15,043 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 52 transitions, 319 flow [2023-11-12 02:13:15,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 120.5) internal successors, (482), 4 states have internal predecessors, (482), 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 02:13:15,044 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:13:15,044 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] [2023-11-12 02:13:15,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-12 02:13:15,044 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-12 02:13:15,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:13:15,045 INFO L85 PathProgramCache]: Analyzing trace with hash 1227884962, now seen corresponding path program 1 times [2023-11-12 02:13:15,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:13:15,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504104470] [2023-11-12 02:13:15,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:13:15,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:13:15,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:13:15,168 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:13:15,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:13:15,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504104470] [2023-11-12 02:13:15,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504104470] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:13:15,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:13:15,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:13:15,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965962771] [2023-11-12 02:13:15,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:13:15,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:13:15,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:13:15,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:13:15,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:13:15,251 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 276 [2023-11-12 02:13:15,251 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 52 transitions, 319 flow. Second operand has 4 states, 4 states have (on average 120.5) internal successors, (482), 4 states have internal predecessors, (482), 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 02:13:15,251 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:13:15,251 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 276 [2023-11-12 02:13:15,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:13:15,684 INFO L124 PetriNetUnfolderBase]: 1801/2419 cut-off events. [2023-11-12 02:13:15,684 INFO L125 PetriNetUnfolderBase]: For 8213/8213 co-relation queries the response was YES. [2023-11-12 02:13:15,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10799 conditions, 2419 events. 1801/2419 cut-off events. For 8213/8213 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 9904 event pairs, 149 based on Foata normal form. 58/2467 useless extension candidates. Maximal degree in co-relation 7133. Up to 1035 conditions per place. [2023-11-12 02:13:15,711 INFO L140 encePairwiseOnDemand]: 271/276 looper letters, 103 selfloop transitions, 8 changer transitions 4/119 dead transitions. [2023-11-12 02:13:15,712 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 119 transitions, 939 flow [2023-11-12 02:13:15,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:13:15,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-12 02:13:15,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 650 transitions. [2023-11-12 02:13:15,715 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47101449275362317 [2023-11-12 02:13:15,715 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 650 transitions. [2023-11-12 02:13:15,716 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 650 transitions. [2023-11-12 02:13:15,716 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:13:15,716 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 650 transitions. [2023-11-12 02:13:15,718 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 130.0) internal successors, (650), 5 states have internal predecessors, (650), 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 02:13:15,721 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 276.0) internal successors, (1656), 6 states have internal predecessors, (1656), 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 02:13:15,722 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 276.0) internal successors, (1656), 6 states have internal predecessors, (1656), 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 02:13:15,722 INFO L175 Difference]: Start difference. First operand has 59 places, 52 transitions, 319 flow. Second operand 5 states and 650 transitions. [2023-11-12 02:13:15,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 119 transitions, 939 flow [2023-11-12 02:13:15,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 119 transitions, 914 flow, removed 8 selfloop flow, removed 1 redundant places. [2023-11-12 02:13:15,740 INFO L231 Difference]: Finished difference. Result has 63 places, 51 transitions, 326 flow [2023-11-12 02:13:15,740 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=276, PETRI_DIFFERENCE_MINUEND_FLOW=294, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=326, PETRI_PLACES=63, PETRI_TRANSITIONS=51} [2023-11-12 02:13:15,741 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 25 predicate places. [2023-11-12 02:13:15,741 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 51 transitions, 326 flow [2023-11-12 02:13:15,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 120.5) internal successors, (482), 4 states have internal predecessors, (482), 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 02:13:15,742 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:13:15,742 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] [2023-11-12 02:13:15,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-12 02:13:15,743 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-12 02:13:15,743 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:13:15,743 INFO L85 PathProgramCache]: Analyzing trace with hash -791990567, now seen corresponding path program 2 times [2023-11-12 02:13:15,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:13:15,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965500232] [2023-11-12 02:13:15,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:13:15,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:13:15,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:13:15,861 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:13:15,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:13:15,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965500232] [2023-11-12 02:13:15,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965500232] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:13:15,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:13:15,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:13:15,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533102791] [2023-11-12 02:13:15,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:13:15,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:13:15,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:13:15,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:13:15,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:13:15,963 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 276 [2023-11-12 02:13:15,964 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 51 transitions, 326 flow. Second operand has 4 states, 4 states have (on average 120.5) internal successors, (482), 4 states have internal predecessors, (482), 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 02:13:15,964 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:13:15,964 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 276 [2023-11-12 02:13:15,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:13:16,365 INFO L124 PetriNetUnfolderBase]: 1725/2373 cut-off events. [2023-11-12 02:13:16,365 INFO L125 PetriNetUnfolderBase]: For 6584/6584 co-relation queries the response was YES. [2023-11-12 02:13:16,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10893 conditions, 2373 events. 1725/2373 cut-off events. For 6584/6584 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 9816 event pairs, 293 based on Foata normal form. 76/2391 useless extension candidates. Maximal degree in co-relation 6732. Up to 1307 conditions per place. [2023-11-12 02:13:16,393 INFO L140 encePairwiseOnDemand]: 271/276 looper letters, 101 selfloop transitions, 8 changer transitions 0/113 dead transitions. [2023-11-12 02:13:16,397 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 113 transitions, 927 flow [2023-11-12 02:13:16,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:13:16,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-12 02:13:16,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 643 transitions. [2023-11-12 02:13:16,401 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46594202898550724 [2023-11-12 02:13:16,401 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 643 transitions. [2023-11-12 02:13:16,401 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 643 transitions. [2023-11-12 02:13:16,402 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:13:16,402 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 643 transitions. [2023-11-12 02:13:16,404 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 128.6) internal successors, (643), 5 states have internal predecessors, (643), 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 02:13:16,407 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 276.0) internal successors, (1656), 6 states have internal predecessors, (1656), 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 02:13:16,408 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 276.0) internal successors, (1656), 6 states have internal predecessors, (1656), 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 02:13:16,408 INFO L175 Difference]: Start difference. First operand has 63 places, 51 transitions, 326 flow. Second operand 5 states and 643 transitions. [2023-11-12 02:13:16,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 113 transitions, 927 flow [2023-11-12 02:13:16,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 113 transitions, 894 flow, removed 8 selfloop flow, removed 1 redundant places. [2023-11-12 02:13:16,421 INFO L231 Difference]: Finished difference. Result has 68 places, 54 transitions, 372 flow [2023-11-12 02:13:16,422 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=276, PETRI_DIFFERENCE_MINUEND_FLOW=315, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=372, PETRI_PLACES=68, PETRI_TRANSITIONS=54} [2023-11-12 02:13:16,422 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 30 predicate places. [2023-11-12 02:13:16,423 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 54 transitions, 372 flow [2023-11-12 02:13:16,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 120.5) internal successors, (482), 4 states have internal predecessors, (482), 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 02:13:16,423 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:13:16,423 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] [2023-11-12 02:13:16,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-12 02:13:16,424 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-12 02:13:16,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:13:16,425 INFO L85 PathProgramCache]: Analyzing trace with hash 1425696098, now seen corresponding path program 2 times [2023-11-12 02:13:16,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:13:16,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495943940] [2023-11-12 02:13:16,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:13:16,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:13:16,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:13:16,538 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:13:16,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:13:16,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495943940] [2023-11-12 02:13:16,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495943940] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:13:16,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [320659485] [2023-11-12 02:13:16,539 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-12 02:13:16,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:13:16,540 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ec93547-32f5-4614-8159-4515c83a096d/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:13:16,545 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ec93547-32f5-4614-8159-4515c83a096d/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:13:16,572 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ec93547-32f5-4614-8159-4515c83a096d/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 02:13:16,673 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-12 02:13:16,673 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 02:13:16,675 INFO L262 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-12 02:13:16,681 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:13:16,846 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:13:16,846 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:13:16,944 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:13:16,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [320659485] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:13:16,945 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:13:16,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-11-12 02:13:16,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801031722] [2023-11-12 02:13:16,948 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:13:16,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:13:16,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:13:16,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:13:16,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:13:17,084 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 276 [2023-11-12 02:13:17,085 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 54 transitions, 372 flow. Second operand has 6 states, 6 states have (on average 120.5) internal successors, (723), 6 states have internal predecessors, (723), 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 02:13:17,085 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:13:17,086 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 276 [2023-11-12 02:13:17,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:13:17,569 INFO L124 PetriNetUnfolderBase]: 1657/2288 cut-off events. [2023-11-12 02:13:17,569 INFO L125 PetriNetUnfolderBase]: For 8490/8490 co-relation queries the response was YES. [2023-11-12 02:13:17,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11121 conditions, 2288 events. 1657/2288 cut-off events. For 8490/8490 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 9657 event pairs, 481 based on Foata normal form. 68/2327 useless extension candidates. Maximal degree in co-relation 9729. Up to 1331 conditions per place. [2023-11-12 02:13:17,596 INFO L140 encePairwiseOnDemand]: 271/276 looper letters, 117 selfloop transitions, 8 changer transitions 0/129 dead transitions. [2023-11-12 02:13:17,596 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 129 transitions, 1154 flow [2023-11-12 02:13:17,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:13:17,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-12 02:13:17,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 647 transitions. [2023-11-12 02:13:17,600 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4688405797101449 [2023-11-12 02:13:17,600 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 647 transitions. [2023-11-12 02:13:17,600 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 647 transitions. [2023-11-12 02:13:17,601 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:13:17,601 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 647 transitions. [2023-11-12 02:13:17,603 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 129.4) internal successors, (647), 5 states have internal predecessors, (647), 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 02:13:17,606 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 276.0) internal successors, (1656), 6 states have internal predecessors, (1656), 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 02:13:17,607 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 276.0) internal successors, (1656), 6 states have internal predecessors, (1656), 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 02:13:17,607 INFO L175 Difference]: Start difference. First operand has 68 places, 54 transitions, 372 flow. Second operand 5 states and 647 transitions. [2023-11-12 02:13:17,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 129 transitions, 1154 flow [2023-11-12 02:13:17,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 129 transitions, 1113 flow, removed 16 selfloop flow, removed 1 redundant places. [2023-11-12 02:13:17,627 INFO L231 Difference]: Finished difference. Result has 73 places, 57 transitions, 410 flow [2023-11-12 02:13:17,627 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=276, PETRI_DIFFERENCE_MINUEND_FLOW=359, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=410, PETRI_PLACES=73, PETRI_TRANSITIONS=57} [2023-11-12 02:13:17,628 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 35 predicate places. [2023-11-12 02:13:17,628 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 57 transitions, 410 flow [2023-11-12 02:13:17,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 120.5) internal successors, (723), 6 states have internal predecessors, (723), 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 02:13:17,629 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:13:17,629 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:13:17,640 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ec93547-32f5-4614-8159-4515c83a096d/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-12 02:13:17,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ec93547-32f5-4614-8159-4515c83a096d/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:13:17,835 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-12 02:13:17,836 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:13:17,836 INFO L85 PathProgramCache]: Analyzing trace with hash -2097048537, now seen corresponding path program 1 times [2023-11-12 02:13:17,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:13:17,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214674985] [2023-11-12 02:13:17,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:13:17,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:13:17,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:13:18,642 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:13:18,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:13:18,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214674985] [2023-11-12 02:13:18,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214674985] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:13:18,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2013487810] [2023-11-12 02:13:18,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:13:18,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:13:18,643 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ec93547-32f5-4614-8159-4515c83a096d/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:13:18,649 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ec93547-32f5-4614-8159-4515c83a096d/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:13:18,661 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ec93547-32f5-4614-8159-4515c83a096d/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-12 02:13:20,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:13:20,255 INFO L262 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-12 02:13:20,258 INFO L285 TraceCheckSpWp]: Computing forward predicates...