./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-bad-ring-nondet.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff 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_952c1a13-a7f7-457f-bd63-f025437b484f/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_952c1a13-a7f7-457f-bd63-f025437b484f/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_952c1a13-a7f7-457f-bd63-f025437b484f/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_952c1a13-a7f7-457f-bd63-f025437b484f/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-bad-ring-nondet.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_952c1a13-a7f7-457f-bd63-f025437b484f/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_952c1a13-a7f7-457f-bd63-f025437b484f/bin/uautomizer-verify-uCwYo4JHxu --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 01186d000498d57447d1d7ea86dd893215c56febea2169abeb96f12030a58ea4 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:37:32,782 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:37:32,871 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_952c1a13-a7f7-457f-bd63-f025437b484f/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 07:37:32,887 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:37:32,888 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:37:32,926 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:37:32,930 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:37:32,930 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:37:32,931 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:37:32,936 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:37:32,937 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:37:32,938 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:37:32,938 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:37:32,940 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:37:32,941 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:37:32,941 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:37:32,941 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:37:32,942 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:37:32,950 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:37:32,951 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:37:32,951 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:37:32,952 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:37:32,952 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:37:32,953 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:37:32,953 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:37:32,954 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:37:32,955 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:37:32,955 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:37:32,955 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:37:32,956 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:37:32,957 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:37:32,958 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:37:32,958 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:37:32,958 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:37:32,959 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:37:32,959 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:37:32,959 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:37:32,959 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:37:32,960 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:37:32,960 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_952c1a13-a7f7-457f-bd63-f025437b484f/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_952c1a13-a7f7-457f-bd63-f025437b484f/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 01186d000498d57447d1d7ea86dd893215c56febea2169abeb96f12030a58ea4 [2023-11-19 07:37:33,246 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:37:33,278 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:37:33,281 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:37:33,283 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:37:33,283 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:37:33,285 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_952c1a13-a7f7-457f-bd63-f025437b484f/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/weaver/popl20-bad-ring-nondet.wvr.c [2023-11-19 07:37:36,437 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:37:36,660 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:37:36,660 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_952c1a13-a7f7-457f-bd63-f025437b484f/sv-benchmarks/c/weaver/popl20-bad-ring-nondet.wvr.c [2023-11-19 07:37:36,669 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_952c1a13-a7f7-457f-bd63-f025437b484f/bin/uautomizer-verify-uCwYo4JHxu/data/553a00461/01712f4b5a5a46c88031403d11a575df/FLAG9496aaf8f [2023-11-19 07:37:36,682 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_952c1a13-a7f7-457f-bd63-f025437b484f/bin/uautomizer-verify-uCwYo4JHxu/data/553a00461/01712f4b5a5a46c88031403d11a575df [2023-11-19 07:37:36,684 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:37:36,686 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:37:36,688 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:37:36,688 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:37:36,694 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:37:36,695 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:37:36" (1/1) ... [2023-11-19 07:37:36,696 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d999f36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:36, skipping insertion in model container [2023-11-19 07:37:36,696 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:37:36" (1/1) ... [2023-11-19 07:37:36,733 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:37:36,945 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_952c1a13-a7f7-457f-bd63-f025437b484f/sv-benchmarks/c/weaver/popl20-bad-ring-nondet.wvr.c[4124,4137] [2023-11-19 07:37:36,957 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:37:36,972 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:37:37,014 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_952c1a13-a7f7-457f-bd63-f025437b484f/sv-benchmarks/c/weaver/popl20-bad-ring-nondet.wvr.c[4124,4137] [2023-11-19 07:37:37,020 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:37:37,032 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:37:37,033 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:37:37,042 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:37:37,042 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:37 WrapperNode [2023-11-19 07:37:37,043 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:37:37,044 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:37:37,044 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:37:37,045 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:37:37,053 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:37" (1/1) ... [2023-11-19 07:37:37,065 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:37" (1/1) ... [2023-11-19 07:37:37,106 INFO L138 Inliner]: procedures = 25, calls = 63, calls flagged for inlining = 16, calls inlined = 20, statements flattened = 333 [2023-11-19 07:37:37,107 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:37:37,107 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:37:37,108 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:37:37,108 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:37:37,118 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:37" (1/1) ... [2023-11-19 07:37:37,119 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:37" (1/1) ... [2023-11-19 07:37:37,124 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:37" (1/1) ... [2023-11-19 07:37:37,124 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:37" (1/1) ... [2023-11-19 07:37:37,137 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:37" (1/1) ... [2023-11-19 07:37:37,143 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:37" (1/1) ... [2023-11-19 07:37:37,146 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:37" (1/1) ... [2023-11-19 07:37:37,148 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:37" (1/1) ... [2023-11-19 07:37:37,154 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:37:37,155 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:37:37,155 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:37:37,155 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:37:37,156 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:37" (1/1) ... [2023-11-19 07:37:37,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:37:37,179 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_952c1a13-a7f7-457f-bd63-f025437b484f/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:37:37,213 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_952c1a13-a7f7-457f-bd63-f025437b484f/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:37:37,215 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_952c1a13-a7f7-457f-bd63-f025437b484f/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:37:37,252 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:37:37,252 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:37:37,252 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:37:37,253 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:37:37,253 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-19 07:37:37,253 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-19 07:37:37,254 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-19 07:37:37,254 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-19 07:37:37,254 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-19 07:37:37,254 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-19 07:37:37,254 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:37:37,256 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-19 07:37:37,257 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-19 07:37:37,258 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 07:37:37,258 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:37:37,258 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:37:37,258 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:37:37,260 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 07:37:37,390 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:37:37,392 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:37:38,022 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:37:38,192 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:37:38,192 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-11-19 07:37:38,198 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:37:38 BoogieIcfgContainer [2023-11-19 07:37:38,198 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:37:38,201 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:37:38,201 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:37:38,205 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:37:38,205 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:37:36" (1/3) ... [2023-11-19 07:37:38,206 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45d5cea0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:37:38, skipping insertion in model container [2023-11-19 07:37:38,206 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:37" (2/3) ... [2023-11-19 07:37:38,207 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45d5cea0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:37:38, skipping insertion in model container [2023-11-19 07:37:38,207 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:37:38" (3/3) ... [2023-11-19 07:37:38,209 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-ring-nondet.wvr.c [2023-11-19 07:37:38,218 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 07:37:38,228 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:37:38,229 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 07:37:38,229 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:37:38,328 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-19 07:37:38,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 277 places, 292 transitions, 605 flow [2023-11-19 07:37:38,521 INFO L124 PetriNetUnfolderBase]: 25/289 cut-off events. [2023-11-19 07:37:38,522 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-19 07:37:38,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 302 conditions, 289 events. 25/289 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 231 event pairs, 0 based on Foata normal form. 0/263 useless extension candidates. Maximal degree in co-relation 248. Up to 3 conditions per place. [2023-11-19 07:37:38,534 INFO L82 GeneralOperation]: Start removeDead. Operand has 277 places, 292 transitions, 605 flow [2023-11-19 07:37:38,553 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 263 places, 278 transitions, 574 flow [2023-11-19 07:37:38,583 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:37:38,599 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 263 places, 278 transitions, 574 flow [2023-11-19 07:37:38,602 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 263 places, 278 transitions, 574 flow [2023-11-19 07:37:38,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 263 places, 278 transitions, 574 flow [2023-11-19 07:37:38,665 INFO L124 PetriNetUnfolderBase]: 25/278 cut-off events. [2023-11-19 07:37:38,665 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-19 07:37:38,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 291 conditions, 278 events. 25/278 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 232 event pairs, 0 based on Foata normal form. 0/253 useless extension candidates. Maximal degree in co-relation 248. Up to 3 conditions per place. [2023-11-19 07:37:38,671 INFO L119 LiptonReduction]: Number of co-enabled transitions 3262 [2023-11-19 07:37:49,824 INFO L134 LiptonReduction]: Checked pairs total: 6108 [2023-11-19 07:37:49,824 INFO L136 LiptonReduction]: Total number of compositions: 296 [2023-11-19 07:37:49,841 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:37:49,848 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;@12f8812e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:37:49,849 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-19 07:37:49,857 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:37:49,857 INFO L124 PetriNetUnfolderBase]: 10/36 cut-off events. [2023-11-19 07:37:49,857 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-19 07:37:49,858 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:37:49,858 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] [2023-11-19 07:37:49,859 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 1 more)] === [2023-11-19 07:37:49,864 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:49,864 INFO L85 PathProgramCache]: Analyzing trace with hash 1571532140, now seen corresponding path program 1 times [2023-11-19 07:37:49,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:49,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182689844] [2023-11-19 07:37:49,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:49,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:50,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:50,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:37:50,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:37:50,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182689844] [2023-11-19 07:37:50,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182689844] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:37:50,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:37:50,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:37:50,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267879878] [2023-11-19 07:37:50,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:37:50,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:37:50,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:37:50,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:37:50,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:37:50,274 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 261 out of 588 [2023-11-19 07:37:50,278 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 37 transitions, 92 flow. Second operand has 2 states, 2 states have (on average 272.0) internal successors, (544), 2 states have internal predecessors, (544), 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) [2023-11-19 07:37:50,279 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:37:50,279 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 261 of 588 [2023-11-19 07:37:50,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:37:50,536 INFO L124 PetriNetUnfolderBase]: 748/1046 cut-off events. [2023-11-19 07:37:50,536 INFO L125 PetriNetUnfolderBase]: For 58/58 co-relation queries the response was YES. [2023-11-19 07:37:50,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2180 conditions, 1046 events. 748/1046 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 3229 event pairs, 493 based on Foata normal form. 0/791 useless extension candidates. Maximal degree in co-relation 1908. Up to 1047 conditions per place. [2023-11-19 07:37:50,546 INFO L140 encePairwiseOnDemand]: 586/588 looper letters, 35 selfloop transitions, 0 changer transitions 0/35 dead transitions. [2023-11-19 07:37:50,546 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 35 transitions, 158 flow [2023-11-19 07:37:50,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:37:50,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-19 07:37:50,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 559 transitions. [2023-11-19 07:37:50,564 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47534013605442177 [2023-11-19 07:37:50,565 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 559 transitions. [2023-11-19 07:37:50,566 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 559 transitions. [2023-11-19 07:37:50,569 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:37:50,571 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 559 transitions. [2023-11-19 07:37:50,577 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 279.5) internal successors, (559), 2 states have internal predecessors, (559), 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) [2023-11-19 07:37:50,583 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 588.0) internal successors, (1764), 3 states have internal predecessors, (1764), 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) [2023-11-19 07:37:50,584 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 588.0) internal successors, (1764), 3 states have internal predecessors, (1764), 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) [2023-11-19 07:37:50,586 INFO L175 Difference]: Start difference. First operand has 37 places, 37 transitions, 92 flow. Second operand 2 states and 559 transitions. [2023-11-19 07:37:50,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 35 transitions, 158 flow [2023-11-19 07:37:50,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 35 transitions, 146 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-19 07:37:50,593 INFO L231 Difference]: Finished difference. Result has 32 places, 35 transitions, 76 flow [2023-11-19 07:37:50,595 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=588, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=76, PETRI_PLACES=32, PETRI_TRANSITIONS=35} [2023-11-19 07:37:50,599 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, -5 predicate places. [2023-11-19 07:37:50,599 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 35 transitions, 76 flow [2023-11-19 07:37:50,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 272.0) internal successors, (544), 2 states have internal predecessors, (544), 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) [2023-11-19 07:37:50,600 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:37:50,600 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:37:50,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:37:50,601 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 1 more)] === [2023-11-19 07:37:50,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:50,602 INFO L85 PathProgramCache]: Analyzing trace with hash 654726923, now seen corresponding path program 1 times [2023-11-19 07:37:50,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:50,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865981946] [2023-11-19 07:37:50,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:50,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:50,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:50,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:37:50,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:37:50,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865981946] [2023-11-19 07:37:50,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865981946] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:37:50,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:37:50,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:37:50,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881489188] [2023-11-19 07:37:50,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:37:50,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:37:50,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:37:50,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:37:50,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:37:50,875 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 259 out of 588 [2023-11-19 07:37:50,877 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 35 transitions, 76 flow. Second operand has 3 states, 3 states have (on average 267.0) internal successors, (801), 3 states have internal predecessors, (801), 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) [2023-11-19 07:37:50,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:37:50,878 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 259 of 588 [2023-11-19 07:37:50,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:37:51,192 INFO L124 PetriNetUnfolderBase]: 1394/1943 cut-off events. [2023-11-19 07:37:51,192 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-19 07:37:51,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3945 conditions, 1943 events. 1394/1943 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 6906 event pairs, 493 based on Foata normal form. 1/1455 useless extension candidates. Maximal degree in co-relation 3942. Up to 1003 conditions per place. [2023-11-19 07:37:51,204 INFO L140 encePairwiseOnDemand]: 585/588 looper letters, 52 selfloop transitions, 2 changer transitions 6/60 dead transitions. [2023-11-19 07:37:51,204 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 60 transitions, 251 flow [2023-11-19 07:37:51,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:37:51,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:37:51,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 838 transitions. [2023-11-19 07:37:51,209 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47505668934240364 [2023-11-19 07:37:51,209 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 838 transitions. [2023-11-19 07:37:51,209 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 838 transitions. [2023-11-19 07:37:51,210 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:37:51,210 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 838 transitions. [2023-11-19 07:37:51,213 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 279.3333333333333) internal successors, (838), 3 states have internal predecessors, (838), 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) [2023-11-19 07:37:51,219 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 588.0) internal successors, (2352), 4 states have internal predecessors, (2352), 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) [2023-11-19 07:37:51,221 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 588.0) internal successors, (2352), 4 states have internal predecessors, (2352), 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) [2023-11-19 07:37:51,221 INFO L175 Difference]: Start difference. First operand has 32 places, 35 transitions, 76 flow. Second operand 3 states and 838 transitions. [2023-11-19 07:37:51,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 60 transitions, 251 flow [2023-11-19 07:37:51,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 60 transitions, 251 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:37:51,224 INFO L231 Difference]: Finished difference. Result has 35 places, 36 transitions, 88 flow [2023-11-19 07:37:51,224 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=588, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=88, PETRI_PLACES=35, PETRI_TRANSITIONS=36} [2023-11-19 07:37:51,225 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, -2 predicate places. [2023-11-19 07:37:51,225 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 36 transitions, 88 flow [2023-11-19 07:37:51,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 267.0) internal successors, (801), 3 states have internal predecessors, (801), 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) [2023-11-19 07:37:51,226 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:37:51,227 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] [2023-11-19 07:37:51,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:37:51,227 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 1 more)] === [2023-11-19 07:37:51,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:51,228 INFO L85 PathProgramCache]: Analyzing trace with hash 2144976339, now seen corresponding path program 1 times [2023-11-19 07:37:51,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:51,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322075082] [2023-11-19 07:37:51,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:51,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:51,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:51,350 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:37:51,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:37:51,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322075082] [2023-11-19 07:37:51,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322075082] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:37:51,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:37:51,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:37:51,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009249624] [2023-11-19 07:37:51,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:37:51,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:37:51,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:37:51,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:37:51,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:37:51,365 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 257 out of 588 [2023-11-19 07:37:51,366 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 36 transitions, 88 flow. Second operand has 3 states, 3 states have (on average 266.0) internal successors, (798), 3 states have internal predecessors, (798), 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) [2023-11-19 07:37:51,366 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:37:51,366 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 257 of 588 [2023-11-19 07:37:51,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:37:51,709 INFO L124 PetriNetUnfolderBase]: 1788/2493 cut-off events. [2023-11-19 07:37:51,709 INFO L125 PetriNetUnfolderBase]: For 66/66 co-relation queries the response was YES. [2023-11-19 07:37:51,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5263 conditions, 2493 events. 1788/2493 cut-off events. For 66/66 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 9380 event pairs, 455 based on Foata normal form. 90/1944 useless extension candidates. Maximal degree in co-relation 5258. Up to 1884 conditions per place. [2023-11-19 07:37:51,725 INFO L140 encePairwiseOnDemand]: 584/588 looper letters, 51 selfloop transitions, 3 changer transitions 0/54 dead transitions. [2023-11-19 07:37:51,726 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 54 transitions, 239 flow [2023-11-19 07:37:51,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:37:51,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:37:51,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 824 transitions. [2023-11-19 07:37:51,730 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4671201814058957 [2023-11-19 07:37:51,730 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 824 transitions. [2023-11-19 07:37:51,730 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 824 transitions. [2023-11-19 07:37:51,731 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:37:51,731 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 824 transitions. [2023-11-19 07:37:51,734 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 274.6666666666667) internal successors, (824), 3 states have internal predecessors, (824), 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) [2023-11-19 07:37:51,740 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 588.0) internal successors, (2352), 4 states have internal predecessors, (2352), 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) [2023-11-19 07:37:51,741 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 588.0) internal successors, (2352), 4 states have internal predecessors, (2352), 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) [2023-11-19 07:37:51,742 INFO L175 Difference]: Start difference. First operand has 35 places, 36 transitions, 88 flow. Second operand 3 states and 824 transitions. [2023-11-19 07:37:51,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 54 transitions, 239 flow [2023-11-19 07:37:51,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 54 transitions, 236 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:37:51,745 INFO L231 Difference]: Finished difference. Result has 37 places, 38 transitions, 105 flow [2023-11-19 07:37:51,745 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=588, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=105, PETRI_PLACES=37, PETRI_TRANSITIONS=38} [2023-11-19 07:37:51,747 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 0 predicate places. [2023-11-19 07:37:51,750 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 38 transitions, 105 flow [2023-11-19 07:37:51,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 266.0) internal successors, (798), 3 states have internal predecessors, (798), 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) [2023-11-19 07:37:51,752 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:37:51,752 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] [2023-11-19 07:37:51,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:37:51,753 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 1 more)] === [2023-11-19 07:37:51,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:51,754 INFO L85 PathProgramCache]: Analyzing trace with hash 406036967, now seen corresponding path program 2 times [2023-11-19 07:37:51,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:51,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652556467] [2023-11-19 07:37:51,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:51,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:51,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:51,938 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:37:51,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:37:51,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652556467] [2023-11-19 07:37:51,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652556467] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:37:51,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:37:51,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:37:51,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133483541] [2023-11-19 07:37:51,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:37:51,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:37:51,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:37:51,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:37:51,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:37:51,952 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 257 out of 588 [2023-11-19 07:37:51,954 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 38 transitions, 105 flow. Second operand has 3 states, 3 states have (on average 266.0) internal successors, (798), 3 states have internal predecessors, (798), 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) [2023-11-19 07:37:51,954 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:37:51,960 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 257 of 588 [2023-11-19 07:37:51,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:37:52,318 INFO L124 PetriNetUnfolderBase]: 1784/2505 cut-off events. [2023-11-19 07:37:52,319 INFO L125 PetriNetUnfolderBase]: For 391/391 co-relation queries the response was YES. [2023-11-19 07:37:52,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5741 conditions, 2505 events. 1784/2505 cut-off events. For 391/391 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 9192 event pairs, 567 based on Foata normal form. 108/2094 useless extension candidates. Maximal degree in co-relation 5735. Up to 1456 conditions per place. [2023-11-19 07:37:52,337 INFO L140 encePairwiseOnDemand]: 584/588 looper letters, 52 selfloop transitions, 3 changer transitions 0/55 dead transitions. [2023-11-19 07:37:52,337 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 55 transitions, 261 flow [2023-11-19 07:37:52,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:37:52,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:37:52,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 823 transitions. [2023-11-19 07:37:52,341 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4665532879818594 [2023-11-19 07:37:52,342 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 823 transitions. [2023-11-19 07:37:52,342 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 823 transitions. [2023-11-19 07:37:52,343 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:37:52,343 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 823 transitions. [2023-11-19 07:37:52,346 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 274.3333333333333) internal successors, (823), 3 states have internal predecessors, (823), 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) [2023-11-19 07:37:52,351 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 588.0) internal successors, (2352), 4 states have internal predecessors, (2352), 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) [2023-11-19 07:37:52,353 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 588.0) internal successors, (2352), 4 states have internal predecessors, (2352), 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) [2023-11-19 07:37:52,354 INFO L175 Difference]: Start difference. First operand has 37 places, 38 transitions, 105 flow. Second operand 3 states and 823 transitions. [2023-11-19 07:37:52,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 55 transitions, 261 flow [2023-11-19 07:37:52,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 55 transitions, 258 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:37:52,358 INFO L231 Difference]: Finished difference. Result has 39 places, 40 transitions, 121 flow [2023-11-19 07:37:52,358 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=588, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=121, PETRI_PLACES=39, PETRI_TRANSITIONS=40} [2023-11-19 07:37:52,359 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 2 predicate places. [2023-11-19 07:37:52,359 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 40 transitions, 121 flow [2023-11-19 07:37:52,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 266.0) internal successors, (798), 3 states have internal predecessors, (798), 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) [2023-11-19 07:37:52,360 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:37:52,360 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] [2023-11-19 07:37:52,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:37:52,361 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 1 more)] === [2023-11-19 07:37:52,361 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:52,361 INFO L85 PathProgramCache]: Analyzing trace with hash -149092643, now seen corresponding path program 3 times [2023-11-19 07:37:52,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:52,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291821125] [2023-11-19 07:37:52,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:52,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:52,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:52,435 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:37:52,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:37:52,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291821125] [2023-11-19 07:37:52,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291821125] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:37:52,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:37:52,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:37:52,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157884114] [2023-11-19 07:37:52,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:37:52,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:37:52,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:37:52,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:37:52,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:37:52,449 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 588 [2023-11-19 07:37:52,451 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 40 transitions, 121 flow. Second operand has 3 states, 3 states have (on average 265.0) internal successors, (795), 3 states have internal predecessors, (795), 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) [2023-11-19 07:37:52,451 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:37:52,451 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 588 [2023-11-19 07:37:52,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:37:52,918 INFO L124 PetriNetUnfolderBase]: 2022/2857 cut-off events. [2023-11-19 07:37:52,918 INFO L125 PetriNetUnfolderBase]: For 525/525 co-relation queries the response was YES. [2023-11-19 07:37:52,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7106 conditions, 2857 events. 2022/2857 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 11580 event pairs, 437 based on Foata normal form. 128/2422 useless extension candidates. Maximal degree in co-relation 7099. Up to 1842 conditions per place. [2023-11-19 07:37:52,940 INFO L140 encePairwiseOnDemand]: 585/588 looper letters, 52 selfloop transitions, 3 changer transitions 1/56 dead transitions. [2023-11-19 07:37:52,940 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 56 transitions, 281 flow [2023-11-19 07:37:52,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:37:52,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:37:52,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 818 transitions. [2023-11-19 07:37:52,944 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.463718820861678 [2023-11-19 07:37:52,945 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 818 transitions. [2023-11-19 07:37:52,945 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 818 transitions. [2023-11-19 07:37:52,946 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:37:52,946 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 818 transitions. [2023-11-19 07:37:52,949 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 272.6666666666667) internal successors, (818), 3 states have internal predecessors, (818), 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) [2023-11-19 07:37:52,954 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 588.0) internal successors, (2352), 4 states have internal predecessors, (2352), 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) [2023-11-19 07:37:52,955 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 588.0) internal successors, (2352), 4 states have internal predecessors, (2352), 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) [2023-11-19 07:37:52,956 INFO L175 Difference]: Start difference. First operand has 39 places, 40 transitions, 121 flow. Second operand 3 states and 818 transitions. [2023-11-19 07:37:52,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 56 transitions, 281 flow [2023-11-19 07:37:52,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 56 transitions, 276 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:37:52,958 INFO L231 Difference]: Finished difference. Result has 42 places, 40 transitions, 132 flow [2023-11-19 07:37:52,959 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=588, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=132, PETRI_PLACES=42, PETRI_TRANSITIONS=40} [2023-11-19 07:37:52,960 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 5 predicate places. [2023-11-19 07:37:52,960 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 40 transitions, 132 flow [2023-11-19 07:37:52,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 265.0) internal successors, (795), 3 states have internal predecessors, (795), 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) [2023-11-19 07:37:52,961 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:37:52,961 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:37:52,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 07:37:52,961 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 1 more)] === [2023-11-19 07:37:52,962 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:52,962 INFO L85 PathProgramCache]: Analyzing trace with hash -1553685715, now seen corresponding path program 1 times [2023-11-19 07:37:52,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:52,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717068905] [2023-11-19 07:37:52,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:52,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:52,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:53,054 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:37:53,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:37:53,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717068905] [2023-11-19 07:37:53,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717068905] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:37:53,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:37:53,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:37:53,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328759443] [2023-11-19 07:37:53,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:37:53,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:37:53,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:37:53,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:37:53,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:37:53,092 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 251 out of 588 [2023-11-19 07:37:53,093 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 40 transitions, 132 flow. Second operand has 3 states, 3 states have (on average 261.0) internal successors, (783), 3 states have internal predecessors, (783), 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) [2023-11-19 07:37:53,093 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:37:53,093 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 251 of 588 [2023-11-19 07:37:53,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:37:53,668 INFO L124 PetriNetUnfolderBase]: 2934/4139 cut-off events. [2023-11-19 07:37:53,668 INFO L125 PetriNetUnfolderBase]: For 1814/1814 co-relation queries the response was YES. [2023-11-19 07:37:53,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10831 conditions, 4139 events. 2934/4139 cut-off events. For 1814/1814 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 17573 event pairs, 1018 based on Foata normal form. 0/3320 useless extension candidates. Maximal degree in co-relation 10823. Up to 2620 conditions per place. [2023-11-19 07:37:53,693 INFO L140 encePairwiseOnDemand]: 583/588 looper letters, 50 selfloop transitions, 4 changer transitions 6/60 dead transitions. [2023-11-19 07:37:53,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 60 transitions, 312 flow [2023-11-19 07:37:53,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:37:53,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:37:53,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 806 transitions. [2023-11-19 07:37:53,698 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45691609977324266 [2023-11-19 07:37:53,698 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 806 transitions. [2023-11-19 07:37:53,698 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 806 transitions. [2023-11-19 07:37:53,699 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:37:53,699 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 806 transitions. [2023-11-19 07:37:53,702 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 268.6666666666667) internal successors, (806), 3 states have internal predecessors, (806), 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) [2023-11-19 07:37:53,708 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 588.0) internal successors, (2352), 4 states have internal predecessors, (2352), 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) [2023-11-19 07:37:53,709 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 588.0) internal successors, (2352), 4 states have internal predecessors, (2352), 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) [2023-11-19 07:37:53,710 INFO L175 Difference]: Start difference. First operand has 42 places, 40 transitions, 132 flow. Second operand 3 states and 806 transitions. [2023-11-19 07:37:53,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 60 transitions, 312 flow [2023-11-19 07:37:53,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 60 transitions, 306 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:37:53,714 INFO L231 Difference]: Finished difference. Result has 44 places, 44 transitions, 160 flow [2023-11-19 07:37:53,714 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=588, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=160, PETRI_PLACES=44, PETRI_TRANSITIONS=44} [2023-11-19 07:37:53,715 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 7 predicate places. [2023-11-19 07:37:53,715 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 44 transitions, 160 flow [2023-11-19 07:37:53,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 261.0) internal successors, (783), 3 states have internal predecessors, (783), 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) [2023-11-19 07:37:53,716 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:37:53,716 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:37:53,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 07:37:53,716 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 1 more)] === [2023-11-19 07:37:53,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:53,717 INFO L85 PathProgramCache]: Analyzing trace with hash 25658407, now seen corresponding path program 2 times [2023-11-19 07:37:53,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:53,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636843120] [2023-11-19 07:37:53,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:53,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:53,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:53,931 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 07:37:53,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:37:53,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636843120] [2023-11-19 07:37:53,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636843120] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:37:53,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:37:53,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:37:53,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352531394] [2023-11-19 07:37:53,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:37:53,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:37:53,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:37:53,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:37:53,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:37:54,043 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 588 [2023-11-19 07:37:54,045 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 44 transitions, 160 flow. Second operand has 4 states, 4 states have (on average 248.5) internal successors, (994), 4 states have internal predecessors, (994), 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) [2023-11-19 07:37:54,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:37:54,045 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 588 [2023-11-19 07:37:54,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:37:54,696 INFO L124 PetriNetUnfolderBase]: 2963/4200 cut-off events. [2023-11-19 07:37:54,697 INFO L125 PetriNetUnfolderBase]: For 2176/2176 co-relation queries the response was YES. [2023-11-19 07:37:54,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11834 conditions, 4200 events. 2963/4200 cut-off events. For 2176/2176 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 17224 event pairs, 1769 based on Foata normal form. 14/3518 useless extension candidates. Maximal degree in co-relation 11825. Up to 4140 conditions per place. [2023-11-19 07:37:54,728 INFO L140 encePairwiseOnDemand]: 584/588 looper letters, 43 selfloop transitions, 2 changer transitions 14/59 dead transitions. [2023-11-19 07:37:54,728 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 59 transitions, 315 flow [2023-11-19 07:37:54,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:37:54,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:37:54,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1015 transitions. [2023-11-19 07:37:54,736 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43154761904761907 [2023-11-19 07:37:54,736 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1015 transitions. [2023-11-19 07:37:54,736 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1015 transitions. [2023-11-19 07:37:54,738 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:37:54,738 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1015 transitions. [2023-11-19 07:37:54,742 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 253.75) internal successors, (1015), 4 states have internal predecessors, (1015), 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) [2023-11-19 07:37:54,747 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 588.0) internal successors, (2940), 5 states have internal predecessors, (2940), 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) [2023-11-19 07:37:54,749 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 588.0) internal successors, (2940), 5 states have internal predecessors, (2940), 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) [2023-11-19 07:37:54,751 INFO L175 Difference]: Start difference. First operand has 44 places, 44 transitions, 160 flow. Second operand 4 states and 1015 transitions. [2023-11-19 07:37:54,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 59 transitions, 315 flow [2023-11-19 07:37:54,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 59 transitions, 307 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:37:54,761 INFO L231 Difference]: Finished difference. Result has 47 places, 45 transitions, 166 flow [2023-11-19 07:37:54,761 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=588, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=166, PETRI_PLACES=47, PETRI_TRANSITIONS=45} [2023-11-19 07:37:54,762 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 10 predicate places. [2023-11-19 07:37:54,763 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 45 transitions, 166 flow [2023-11-19 07:37:54,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 248.5) internal successors, (994), 4 states have internal predecessors, (994), 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) [2023-11-19 07:37:54,765 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:37:54,766 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:37:54,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 07:37:54,766 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 1 more)] === [2023-11-19 07:37:54,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:54,767 INFO L85 PathProgramCache]: Analyzing trace with hash -1656730698, now seen corresponding path program 1 times [2023-11-19 07:37:54,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:54,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358195694] [2023-11-19 07:37:54,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:54,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:54,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:55,010 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-19 07:37:55,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:37:55,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358195694] [2023-11-19 07:37:55,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358195694] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:37:55,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:37:55,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:37:55,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354858691] [2023-11-19 07:37:55,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:37:55,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:37:55,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:37:55,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:37:55,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:37:55,115 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 588 [2023-11-19 07:37:55,117 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 45 transitions, 166 flow. Second operand has 4 states, 4 states have (on average 248.5) internal successors, (994), 4 states have internal predecessors, (994), 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) [2023-11-19 07:37:55,117 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:37:55,117 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 588 [2023-11-19 07:37:55,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:37:55,901 INFO L124 PetriNetUnfolderBase]: 4046/5849 cut-off events. [2023-11-19 07:37:55,901 INFO L125 PetriNetUnfolderBase]: For 2744/2744 co-relation queries the response was YES. [2023-11-19 07:37:55,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16184 conditions, 5849 events. 4046/5849 cut-off events. For 2744/2744 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 26640 event pairs, 2507 based on Foata normal form. 116/4944 useless extension candidates. Maximal degree in co-relation 16173. Up to 4141 conditions per place. [2023-11-19 07:37:55,936 INFO L140 encePairwiseOnDemand]: 583/588 looper letters, 44 selfloop transitions, 2 changer transitions 29/75 dead transitions. [2023-11-19 07:37:55,936 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 75 transitions, 422 flow [2023-11-19 07:37:55,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:37:55,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:37:55,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1024 transitions. [2023-11-19 07:37:55,941 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43537414965986393 [2023-11-19 07:37:55,941 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1024 transitions. [2023-11-19 07:37:55,941 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1024 transitions. [2023-11-19 07:37:55,942 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:37:55,943 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1024 transitions. [2023-11-19 07:37:55,946 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 256.0) internal successors, (1024), 4 states have internal predecessors, (1024), 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) [2023-11-19 07:37:55,951 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 588.0) internal successors, (2940), 5 states have internal predecessors, (2940), 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) [2023-11-19 07:37:55,952 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 588.0) internal successors, (2940), 5 states have internal predecessors, (2940), 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) [2023-11-19 07:37:55,952 INFO L175 Difference]: Start difference. First operand has 47 places, 45 transitions, 166 flow. Second operand 4 states and 1024 transitions. [2023-11-19 07:37:55,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 75 transitions, 422 flow [2023-11-19 07:37:55,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 75 transitions, 414 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-11-19 07:37:55,959 INFO L231 Difference]: Finished difference. Result has 49 places, 46 transitions, 176 flow [2023-11-19 07:37:55,960 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=588, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=176, PETRI_PLACES=49, PETRI_TRANSITIONS=46} [2023-11-19 07:37:55,963 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 12 predicate places. [2023-11-19 07:37:55,963 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 46 transitions, 176 flow [2023-11-19 07:37:55,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 248.5) internal successors, (994), 4 states have internal predecessors, (994), 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) [2023-11-19 07:37:55,964 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:37:55,964 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:37:55,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 07:37:55,965 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 1 more)] === [2023-11-19 07:37:55,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:55,965 INFO L85 PathProgramCache]: Analyzing trace with hash 648996709, now seen corresponding path program 1 times [2023-11-19 07:37:55,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:55,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132267352] [2023-11-19 07:37:55,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:55,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:56,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:56,268 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-19 07:37:56,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:37:56,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132267352] [2023-11-19 07:37:56,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132267352] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:37:56,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:37:56,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:37:56,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916306116] [2023-11-19 07:37:56,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:37:56,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:37:56,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:37:56,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:37:56,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:37:56,374 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 588 [2023-11-19 07:37:56,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 46 transitions, 176 flow. Second operand has 4 states, 4 states have (on average 249.0) internal successors, (996), 4 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:56,376 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:37:56,376 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 588 [2023-11-19 07:37:56,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:37:57,289 INFO L124 PetriNetUnfolderBase]: 4082/5845 cut-off events. [2023-11-19 07:37:57,290 INFO L125 PetriNetUnfolderBase]: For 2676/2676 co-relation queries the response was YES. [2023-11-19 07:37:57,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16471 conditions, 5845 events. 4082/5845 cut-off events. For 2676/2676 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 26109 event pairs, 2492 based on Foata normal form. 176/4892 useless extension candidates. Maximal degree in co-relation 16459. Up to 4142 conditions per place. [2023-11-19 07:37:57,316 INFO L140 encePairwiseOnDemand]: 582/588 looper letters, 45 selfloop transitions, 2 changer transitions 32/79 dead transitions. [2023-11-19 07:37:57,317 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 79 transitions, 455 flow [2023-11-19 07:37:57,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:37:57,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:37:57,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1027 transitions. [2023-11-19 07:37:57,322 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4366496598639456 [2023-11-19 07:37:57,322 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1027 transitions. [2023-11-19 07:37:57,322 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1027 transitions. [2023-11-19 07:37:57,323 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:37:57,323 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1027 transitions. [2023-11-19 07:37:57,326 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 256.75) internal successors, (1027), 4 states have internal predecessors, (1027), 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) [2023-11-19 07:37:57,331 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 588.0) internal successors, (2940), 5 states have internal predecessors, (2940), 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) [2023-11-19 07:37:57,332 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 588.0) internal successors, (2940), 5 states have internal predecessors, (2940), 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) [2023-11-19 07:37:57,333 INFO L175 Difference]: Start difference. First operand has 49 places, 46 transitions, 176 flow. Second operand 4 states and 1027 transitions. [2023-11-19 07:37:57,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 79 transitions, 455 flow [2023-11-19 07:37:57,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 79 transitions, 443 flow, removed 5 selfloop flow, removed 2 redundant places. [2023-11-19 07:37:57,350 INFO L231 Difference]: Finished difference. Result has 51 places, 47 transitions, 186 flow [2023-11-19 07:37:57,350 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=588, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=186, PETRI_PLACES=51, PETRI_TRANSITIONS=47} [2023-11-19 07:37:57,351 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 14 predicate places. [2023-11-19 07:37:57,351 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 47 transitions, 186 flow [2023-11-19 07:37:57,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 249.0) internal successors, (996), 4 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:57,352 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:37:57,353 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:37:57,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-19 07:37:57,353 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 1 more)] === [2023-11-19 07:37:57,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:57,354 INFO L85 PathProgramCache]: Analyzing trace with hash -556595858, now seen corresponding path program 1 times [2023-11-19 07:37:57,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:57,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446006651] [2023-11-19 07:37:57,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:57,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:57,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:57,683 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-19 07:37:57,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:37:57,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446006651] [2023-11-19 07:37:57,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446006651] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:37:57,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2102128199] [2023-11-19 07:37:57,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:57,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:37:57,686 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_952c1a13-a7f7-457f-bd63-f025437b484f/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:37:57,687 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_952c1a13-a7f7-457f-bd63-f025437b484f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:37:57,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_952c1a13-a7f7-457f-bd63-f025437b484f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:37:57,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:57,886 INFO L262 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-19 07:37:57,893 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:37:58,045 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-19 07:37:58,045 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:37:58,135 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-19 07:37:58,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2102128199] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:37:58,136 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:37:58,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-11-19 07:37:58,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423416466] [2023-11-19 07:37:58,137 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:37:58,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-19 07:37:58,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:37:58,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-19 07:37:58,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2023-11-19 07:37:58,486 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 233 out of 588 [2023-11-19 07:37:58,490 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 47 transitions, 186 flow. Second operand has 13 states, 13 states have (on average 236.84615384615384) internal successors, (3079), 13 states have internal predecessors, (3079), 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) [2023-11-19 07:37:58,490 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:37:58,490 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 233 of 588 [2023-11-19 07:37:58,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:37:59,289 INFO L124 PetriNetUnfolderBase]: 3465/4996 cut-off events. [2023-11-19 07:37:59,290 INFO L125 PetriNetUnfolderBase]: For 2412/2412 co-relation queries the response was YES. [2023-11-19 07:37:59,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14090 conditions, 4996 events. 3465/4996 cut-off events. For 2412/2412 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 21956 event pairs, 1835 based on Foata normal form. 198/4250 useless extension candidates. Maximal degree in co-relation 14077. Up to 4142 conditions per place. [2023-11-19 07:37:59,323 INFO L140 encePairwiseOnDemand]: 582/588 looper letters, 45 selfloop transitions, 3 changer transitions 50/98 dead transitions. [2023-11-19 07:37:59,323 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 98 transitions, 567 flow [2023-11-19 07:37:59,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:37:59,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 07:37:59,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1711 transitions. [2023-11-19 07:37:59,331 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41569484936831874 [2023-11-19 07:37:59,331 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1711 transitions. [2023-11-19 07:37:59,331 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1711 transitions. [2023-11-19 07:37:59,333 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:37:59,333 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1711 transitions. [2023-11-19 07:37:59,339 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 244.42857142857142) internal successors, (1711), 7 states have internal predecessors, (1711), 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) [2023-11-19 07:37:59,347 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 588.0) internal successors, (4704), 8 states have internal predecessors, (4704), 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) [2023-11-19 07:37:59,349 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 588.0) internal successors, (4704), 8 states have internal predecessors, (4704), 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) [2023-11-19 07:37:59,349 INFO L175 Difference]: Start difference. First operand has 51 places, 47 transitions, 186 flow. Second operand 7 states and 1711 transitions. [2023-11-19 07:37:59,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 98 transitions, 567 flow [2023-11-19 07:37:59,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 98 transitions, 559 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-11-19 07:37:59,355 INFO L231 Difference]: Finished difference. Result has 59 places, 48 transitions, 206 flow [2023-11-19 07:37:59,355 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=588, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=206, PETRI_PLACES=59, PETRI_TRANSITIONS=48} [2023-11-19 07:37:59,356 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 22 predicate places. [2023-11-19 07:37:59,356 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 48 transitions, 206 flow [2023-11-19 07:37:59,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 236.84615384615384) internal successors, (3079), 13 states have internal predecessors, (3079), 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) [2023-11-19 07:37:59,358 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:37:59,358 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:37:59,389 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_952c1a13-a7f7-457f-bd63-f025437b484f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 07:37:59,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_952c1a13-a7f7-457f-bd63-f025437b484f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-19 07:37:59,569 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-19 07:37:59,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:59,569 INFO L85 PathProgramCache]: Analyzing trace with hash 1589540617, now seen corresponding path program 2 times [2023-11-19 07:37:59,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:59,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045729149] [2023-11-19 07:37:59,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:59,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:59,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:59,949 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-19 07:37:59,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:37:59,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045729149] [2023-11-19 07:37:59,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045729149] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:37:59,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [74000915] [2023-11-19 07:37:59,950 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 07:37:59,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:37:59,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_952c1a13-a7f7-457f-bd63-f025437b484f/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:37:59,951 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_952c1a13-a7f7-457f-bd63-f025437b484f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:37:59,972 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_952c1a13-a7f7-457f-bd63-f025437b484f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 07:38:00,135 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-19 07:38:00,135 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:38:00,138 INFO L262 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-19 07:38:00,141 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:38:00,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:38:00,259 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 16 [2023-11-19 07:38:00,264 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-19 07:38:00,264 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:38:00,321 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 28 [2023-11-19 07:38:00,355 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-19 07:38:00,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [74000915] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:38:00,356 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:38:00,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-11-19 07:38:00,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865330361] [2023-11-19 07:38:00,357 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:38:00,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-19 07:38:00,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:38:00,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-19 07:38:00,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=76, Unknown=2, NotChecked=0, Total=110 [2023-11-19 07:38:00,593 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 227 out of 588 [2023-11-19 07:38:00,596 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 48 transitions, 206 flow. Second operand has 11 states, 11 states have (on average 232.27272727272728) internal successors, (2555), 11 states have internal predecessors, (2555), 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) [2023-11-19 07:38:00,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:38:00,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 227 of 588 [2023-11-19 07:38:00,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:38:01,579 INFO L124 PetriNetUnfolderBase]: 3734/5255 cut-off events. [2023-11-19 07:38:01,579 INFO L125 PetriNetUnfolderBase]: For 3162/3162 co-relation queries the response was YES. [2023-11-19 07:38:01,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15245 conditions, 5255 events. 3734/5255 cut-off events. For 3162/3162 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 23351 event pairs, 1278 based on Foata normal form. 0/4214 useless extension candidates. Maximal degree in co-relation 15228. Up to 2680 conditions per place. [2023-11-19 07:38:01,617 INFO L140 encePairwiseOnDemand]: 582/588 looper letters, 44 selfloop transitions, 5 changer transitions 17/66 dead transitions. [2023-11-19 07:38:01,617 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 66 transitions, 404 flow [2023-11-19 07:38:01,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:38:01,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:38:01,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1188 transitions. [2023-11-19 07:38:01,624 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40408163265306124 [2023-11-19 07:38:01,624 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1188 transitions. [2023-11-19 07:38:01,624 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1188 transitions. [2023-11-19 07:38:01,626 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:38:01,626 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1188 transitions. [2023-11-19 07:38:01,631 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 237.6) internal successors, (1188), 5 states have internal predecessors, (1188), 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) [2023-11-19 07:38:01,638 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 588.0) internal successors, (3528), 6 states have internal predecessors, (3528), 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) [2023-11-19 07:38:01,640 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 588.0) internal successors, (3528), 6 states have internal predecessors, (3528), 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) [2023-11-19 07:38:01,640 INFO L175 Difference]: Start difference. First operand has 59 places, 48 transitions, 206 flow. Second operand 5 states and 1188 transitions. [2023-11-19 07:38:01,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 66 transitions, 404 flow [2023-11-19 07:38:01,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 66 transitions, 388 flow, removed 6 selfloop flow, removed 5 redundant places. [2023-11-19 07:38:01,648 INFO L231 Difference]: Finished difference. Result has 56 places, 46 transitions, 197 flow [2023-11-19 07:38:01,648 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=588, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=197, PETRI_PLACES=56, PETRI_TRANSITIONS=46} [2023-11-19 07:38:01,649 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 19 predicate places. [2023-11-19 07:38:01,649 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 46 transitions, 197 flow [2023-11-19 07:38:01,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 232.27272727272728) internal successors, (2555), 11 states have internal predecessors, (2555), 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) [2023-11-19 07:38:01,651 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:38:01,651 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:38:01,678 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_952c1a13-a7f7-457f-bd63-f025437b484f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 07:38:01,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_952c1a13-a7f7-457f-bd63-f025437b484f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:38:01,873 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-19 07:38:01,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:38:01,874 INFO L85 PathProgramCache]: Analyzing trace with hash 915007585, now seen corresponding path program 3 times [2023-11-19 07:38:01,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:38:01,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164508699] [2023-11-19 07:38:01,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:01,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:38:01,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:02,202 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-19 07:38:02,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:38:02,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164508699] [2023-11-19 07:38:02,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164508699] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:38:02,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:38:02,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:38:02,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699750831] [2023-11-19 07:38:02,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:38:02,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:38:02,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:38:02,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:38:02,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:38:02,296 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 588 [2023-11-19 07:38:02,298 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 46 transitions, 197 flow. Second operand has 5 states, 5 states have (on average 245.6) internal successors, (1228), 5 states have internal predecessors, (1228), 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) [2023-11-19 07:38:02,298 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:38:02,298 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 588 [2023-11-19 07:38:02,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:38:02,894 INFO L124 PetriNetUnfolderBase]: 2728/3863 cut-off events. [2023-11-19 07:38:02,894 INFO L125 PetriNetUnfolderBase]: For 2748/2748 co-relation queries the response was YES. [2023-11-19 07:38:02,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11346 conditions, 3863 events. 2728/3863 cut-off events. For 2748/2748 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 16594 event pairs, 878 based on Foata normal form. 20/3204 useless extension candidates. Maximal degree in co-relation 11331. Up to 2227 conditions per place. [2023-11-19 07:38:02,914 INFO L140 encePairwiseOnDemand]: 582/588 looper letters, 50 selfloop transitions, 5 changer transitions 8/63 dead transitions. [2023-11-19 07:38:02,914 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 63 transitions, 392 flow [2023-11-19 07:38:02,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:38:02,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:38:02,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1245 transitions. [2023-11-19 07:38:02,919 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42346938775510207 [2023-11-19 07:38:02,919 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1245 transitions. [2023-11-19 07:38:02,919 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1245 transitions. [2023-11-19 07:38:02,920 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:38:02,920 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1245 transitions. [2023-11-19 07:38:02,923 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 249.0) internal successors, (1245), 5 states have internal predecessors, (1245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:38:02,928 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 588.0) internal successors, (3528), 6 states have internal predecessors, (3528), 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) [2023-11-19 07:38:02,929 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 588.0) internal successors, (3528), 6 states have internal predecessors, (3528), 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) [2023-11-19 07:38:02,929 INFO L175 Difference]: Start difference. First operand has 56 places, 46 transitions, 197 flow. Second operand 5 states and 1245 transitions. [2023-11-19 07:38:02,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 63 transitions, 392 flow [2023-11-19 07:38:02,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 63 transitions, 377 flow, removed 1 selfloop flow, removed 4 redundant places. [2023-11-19 07:38:02,941 INFO L231 Difference]: Finished difference. Result has 57 places, 46 transitions, 201 flow [2023-11-19 07:38:02,941 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=588, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=201, PETRI_PLACES=57, PETRI_TRANSITIONS=46} [2023-11-19 07:38:02,942 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 20 predicate places. [2023-11-19 07:38:02,942 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 46 transitions, 201 flow [2023-11-19 07:38:02,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 245.6) internal successors, (1228), 5 states have internal predecessors, (1228), 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) [2023-11-19 07:38:02,943 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:38:02,943 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:38:02,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-19 07:38:02,944 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-19 07:38:02,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:38:02,944 INFO L85 PathProgramCache]: Analyzing trace with hash -1336681083, now seen corresponding path program 4 times [2023-11-19 07:38:02,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:38:02,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510434638] [2023-11-19 07:38:02,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:02,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:38:03,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:03,381 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-19 07:38:03,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:38:03,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510434638] [2023-11-19 07:38:03,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510434638] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:38:03,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1026977961] [2023-11-19 07:38:03,382 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-19 07:38:03,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:38:03,383 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_952c1a13-a7f7-457f-bd63-f025437b484f/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:38:03,385 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_952c1a13-a7f7-457f-bd63-f025437b484f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:38:03,408 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_952c1a13-a7f7-457f-bd63-f025437b484f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 07:38:03,584 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-19 07:38:03,584 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:38:03,587 INFO L262 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-19 07:38:03,591 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:38:03,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:38:03,712 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 16 [2023-11-19 07:38:03,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:38:03,762 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 16 [2023-11-19 07:38:03,774 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-19 07:38:03,774 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:38:03,876 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 166 treesize of output 142 [2023-11-19 07:38:03,960 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 1 refuted. 1 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-19 07:38:03,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1026977961] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:38:03,961 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:38:03,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 13 [2023-11-19 07:38:03,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436253055] [2023-11-19 07:38:03,963 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:38:03,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-19 07:38:03,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:38:03,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-19 07:38:03,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=123, Unknown=14, NotChecked=0, Total=182 [2023-11-19 07:38:04,209 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 588 [2023-11-19 07:38:04,212 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 46 transitions, 201 flow. Second operand has 14 states, 14 states have (on average 228.35714285714286) internal successors, (3197), 14 states have internal predecessors, (3197), 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) [2023-11-19 07:38:04,212 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:38:04,212 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 588 [2023-11-19 07:38:04,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:38:04,727 INFO L124 PetriNetUnfolderBase]: 1712/2424 cut-off events. [2023-11-19 07:38:04,727 INFO L125 PetriNetUnfolderBase]: For 2186/2186 co-relation queries the response was YES. [2023-11-19 07:38:04,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7146 conditions, 2424 events. 1712/2424 cut-off events. For 2186/2186 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 9032 event pairs, 1026 based on Foata normal form. 104/2061 useless extension candidates. Maximal degree in co-relation 7131. Up to 2404 conditions per place. [2023-11-19 07:38:04,735 INFO L140 encePairwiseOnDemand]: 583/588 looper letters, 0 selfloop transitions, 0 changer transitions 42/42 dead transitions. [2023-11-19 07:38:04,736 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 42 transitions, 284 flow [2023-11-19 07:38:04,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:38:04,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:38:04,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1153 transitions. [2023-11-19 07:38:04,741 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3921768707482993 [2023-11-19 07:38:04,741 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1153 transitions. [2023-11-19 07:38:04,741 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1153 transitions. [2023-11-19 07:38:04,742 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:38:04,742 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1153 transitions. [2023-11-19 07:38:04,745 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 230.6) internal successors, (1153), 5 states have internal predecessors, (1153), 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) [2023-11-19 07:38:04,750 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 588.0) internal successors, (3528), 6 states have internal predecessors, (3528), 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) [2023-11-19 07:38:04,751 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 588.0) internal successors, (3528), 6 states have internal predecessors, (3528), 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) [2023-11-19 07:38:04,751 INFO L175 Difference]: Start difference. First operand has 57 places, 46 transitions, 201 flow. Second operand 5 states and 1153 transitions. [2023-11-19 07:38:04,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 42 transitions, 284 flow [2023-11-19 07:38:04,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 42 transitions, 261 flow, removed 2 selfloop flow, removed 5 redundant places. [2023-11-19 07:38:04,754 INFO L231 Difference]: Finished difference. Result has 50 places, 0 transitions, 0 flow [2023-11-19 07:38:04,755 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=588, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=50, PETRI_TRANSITIONS=0} [2023-11-19 07:38:04,756 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 13 predicate places. [2023-11-19 07:38:04,756 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 0 transitions, 0 flow [2023-11-19 07:38:04,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 228.35714285714286) internal successors, (3197), 14 states have internal predecessors, (3197), 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) [2023-11-19 07:38:04,761 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-11-19 07:38:04,762 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-11-19 07:38:04,762 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-11-19 07:38:04,762 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-11-19 07:38:04,789 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_952c1a13-a7f7-457f-bd63-f025437b484f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 07:38:04,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_952c1a13-a7f7-457f-bd63-f025437b484f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-19 07:38:04,984 INFO L445 BasicCegarLoop]: Path program histogram: [4, 3, 2, 1, 1, 1, 1] [2023-11-19 07:38:04,987 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-19 07:38:04,987 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 07:38:04,990 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 07:38:04 BasicIcfg [2023-11-19 07:38:04,991 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 07:38:04,991 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 07:38:04,991 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 07:38:04,991 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 07:38:04,992 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:37:38" (3/4) ... [2023-11-19 07:38:04,994 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-19 07:38:04,998 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-11-19 07:38:04,998 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-11-19 07:38:04,998 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2023-11-19 07:38:05,009 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 28 nodes and edges [2023-11-19 07:38:05,010 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-19 07:38:05,011 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-19 07:38:05,011 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-19 07:38:05,141 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_952c1a13-a7f7-457f-bd63-f025437b484f/bin/uautomizer-verify-uCwYo4JHxu/witness.graphml [2023-11-19 07:38:05,141 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_952c1a13-a7f7-457f-bd63-f025437b484f/bin/uautomizer-verify-uCwYo4JHxu/witness.yml [2023-11-19 07:38:05,142 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 07:38:05,142 INFO L158 Benchmark]: Toolchain (without parser) took 28456.19ms. Allocated memory was 127.9MB in the beginning and 673.2MB in the end (delta: 545.3MB). Free memory was 80.0MB in the beginning and 590.0MB in the end (delta: -509.9MB). Peak memory consumption was 37.4MB. Max. memory is 16.1GB. [2023-11-19 07:38:05,143 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 127.9MB. Free memory is still 96.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:38:05,143 INFO L158 Benchmark]: CACSL2BoogieTranslator took 355.56ms. Allocated memory is still 127.9MB. Free memory was 79.6MB in the beginning and 66.8MB in the end (delta: 12.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-19 07:38:05,144 INFO L158 Benchmark]: Boogie Procedure Inliner took 62.70ms. Allocated memory is still 127.9MB. Free memory was 66.8MB in the beginning and 64.1MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 07:38:05,144 INFO L158 Benchmark]: Boogie Preprocessor took 46.63ms. Allocated memory is still 127.9MB. Free memory was 64.1MB in the beginning and 62.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 07:38:05,145 INFO L158 Benchmark]: RCFGBuilder took 1043.31ms. Allocated memory was 127.9MB in the beginning and 165.7MB in the end (delta: 37.7MB). Free memory was 62.0MB in the beginning and 106.6MB in the end (delta: -44.6MB). Peak memory consumption was 21.9MB. Max. memory is 16.1GB. [2023-11-19 07:38:05,145 INFO L158 Benchmark]: TraceAbstraction took 26789.76ms. Allocated memory was 165.7MB in the beginning and 673.2MB in the end (delta: 507.5MB). Free memory was 106.3MB in the beginning and 596.6MB in the end (delta: -490.4MB). Peak memory consumption was 378.3MB. Max. memory is 16.1GB. [2023-11-19 07:38:05,146 INFO L158 Benchmark]: Witness Printer took 150.58ms. Allocated memory is still 673.2MB. Free memory was 596.6MB in the beginning and 590.0MB in the end (delta: 6.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-19 07:38:05,149 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 127.9MB. Free memory is still 96.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 355.56ms. Allocated memory is still 127.9MB. Free memory was 79.6MB in the beginning and 66.8MB in the end (delta: 12.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 62.70ms. Allocated memory is still 127.9MB. Free memory was 66.8MB in the beginning and 64.1MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 46.63ms. Allocated memory is still 127.9MB. Free memory was 64.1MB in the beginning and 62.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1043.31ms. Allocated memory was 127.9MB in the beginning and 165.7MB in the end (delta: 37.7MB). Free memory was 62.0MB in the beginning and 106.6MB in the end (delta: -44.6MB). Peak memory consumption was 21.9MB. Max. memory is 16.1GB. * TraceAbstraction took 26789.76ms. Allocated memory was 165.7MB in the beginning and 673.2MB in the end (delta: 507.5MB). Free memory was 106.3MB in the beginning and 596.6MB in the end (delta: -490.4MB). Peak memory consumption was 378.3MB. Max. memory is 16.1GB. * Witness Printer took 150.58ms. Allocated memory is still 673.2MB. Free memory was 596.6MB in the beginning and 590.0MB in the end (delta: 6.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 11.2s, 263 PlacesBefore, 37 PlacesAfterwards, 278 TransitionsBefore, 37 TransitionsAfterwards, 3262 CoEnabledTransitionPairs, 8 FixpointIterations, 181 TrivialSequentialCompositions, 47 ConcurrentSequentialCompositions, 36 TrivialYvCompositions, 17 ConcurrentYvCompositions, 15 ChoiceCompositions, 296 TotalNumberOfCompositions, 6108 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4152, independent: 3997, independent conditional: 0, independent unconditional: 3997, dependent: 155, dependent conditional: 0, dependent unconditional: 155, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1878, independent: 1844, independent conditional: 0, independent unconditional: 1844, dependent: 34, dependent conditional: 0, dependent unconditional: 34, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 4152, independent: 2153, independent conditional: 0, independent unconditional: 2153, dependent: 121, dependent conditional: 0, dependent unconditional: 121, unknown: 1878, unknown conditional: 0, unknown unconditional: 1878] , Statistics on independence cache: Total cache size (in pairs): 163, Positive cache size: 151, Positive conditional cache size: 0, Positive unconditional cache size: 151, Negative cache size: 12, Negative conditional cache size: 0, Negative unconditional cache size: 12, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 156]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 318 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 26.6s, OverallIterations: 13, TraceHistogramMax: 2, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 9.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 11.5s, HoareTripleCheckerStatistics: 24 mSolverCounterUnknown, 1150 SdHoareTripleChecker+Valid, 2.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 857 mSDsluCounter, 423 SdHoareTripleChecker+Invalid, 2.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 401 mSDsCounter, 60 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2888 IncrementalHoareTripleChecker+Invalid, 2972 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 60 mSolverCounterUnsat, 22 mSDtfsCounter, 2888 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 248 GetRequests, 197 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=206occurred in iteration=10, InterpolantAutomatonStates: 51, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 3.3s InterpolantComputationTime, 486 NumberOfCodeBlocks, 486 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 568 ConstructedInterpolants, 10 QuantifiedInterpolants, 2150 SizeOfPredicates, 15 NumberOfNonLiveVariables, 1137 ConjunctsInSsa, 28 ConjunctsInUnsatCore, 19 InterpolantComputations, 10 PerfectInterpolantSequences, 90/106 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-19 07:38:05,188 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_952c1a13-a7f7-457f-bd63-f025437b484f/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE