./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-three-array-sum.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08f63e3d-e0b5-4d81-a989-8cdc84e84a45/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08f63e3d-e0b5-4d81-a989-8cdc84e84a45/bin/uautomizer-verify-4GaUIPS5ZU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08f63e3d-e0b5-4d81-a989-8cdc84e84a45/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08f63e3d-e0b5-4d81-a989-8cdc84e84a45/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-three-array-sum.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08f63e3d-e0b5-4d81-a989-8cdc84e84a45/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08f63e3d-e0b5-4d81-a989-8cdc84e84a45/bin/uautomizer-verify-4GaUIPS5ZU --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 c1d27b7f98ac68d2da6120346c107c87df7f6f708200f0d5d2c806741122116e --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 22:05:51,132 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 22:05:51,211 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08f63e3d-e0b5-4d81-a989-8cdc84e84a45/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-31 22:05:51,217 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 22:05:51,217 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 22:05:51,271 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 22:05:51,274 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 22:05:51,274 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 22:05:51,276 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 22:05:51,277 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 22:05:51,278 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 22:05:51,280 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 22:05:51,281 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 22:05:51,281 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 22:05:51,281 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 22:05:51,282 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 22:05:51,282 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-31 22:05:51,283 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 22:05:51,286 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 22:05:51,287 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 22:05:51,287 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 22:05:51,288 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-31 22:05:51,292 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 22:05:51,292 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-31 22:05:51,292 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 22:05:51,293 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 22:05:51,293 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 22:05:51,293 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 22:05:51,293 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 22:05:51,307 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 22:05:51,308 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 22:05:51,308 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 22:05:51,309 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:05:51,309 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 22:05:51,309 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 22:05:51,310 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-31 22:05:51,310 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 22:05:51,310 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 22:05:51,310 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 22:05:51,311 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 22:05:51,311 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 22:05:51,311 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 22:05:51,312 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_08f63e3d-e0b5-4d81-a989-8cdc84e84a45/bin/uautomizer-verify-4GaUIPS5ZU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08f63e3d-e0b5-4d81-a989-8cdc84e84a45/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c1d27b7f98ac68d2da6120346c107c87df7f6f708200f0d5d2c806741122116e [2024-10-31 22:05:51,678 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 22:05:51,714 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 22:05:51,718 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 22:05:51,720 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 22:05:51,721 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 22:05:51,722 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08f63e3d-e0b5-4d81-a989-8cdc84e84a45/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/weaver/popl20-three-array-sum.wvr.c Unable to find full path for "g++" [2024-10-31 22:05:53,990 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 22:05:54,303 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 22:05:54,303 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08f63e3d-e0b5-4d81-a989-8cdc84e84a45/sv-benchmarks/c/weaver/popl20-three-array-sum.wvr.c [2024-10-31 22:05:54,312 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08f63e3d-e0b5-4d81-a989-8cdc84e84a45/bin/uautomizer-verify-4GaUIPS5ZU/data/e47c20116/fb33555200a44c9b86a8c09c22ca145a/FLAG93539fa95 [2024-10-31 22:05:54,326 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08f63e3d-e0b5-4d81-a989-8cdc84e84a45/bin/uautomizer-verify-4GaUIPS5ZU/data/e47c20116/fb33555200a44c9b86a8c09c22ca145a [2024-10-31 22:05:54,329 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 22:05:54,331 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 22:05:54,334 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 22:05:54,334 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 22:05:54,341 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 22:05:54,341 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:05:54" (1/1) ... [2024-10-31 22:05:54,343 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13160836 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:05:54, skipping insertion in model container [2024-10-31 22:05:54,343 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:05:54" (1/1) ... [2024-10-31 22:05:54,386 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:05:54,680 WARN L251 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_08f63e3d-e0b5-4d81-a989-8cdc84e84a45/sv-benchmarks/c/weaver/popl20-three-array-sum.wvr.c[2730,2743] [2024-10-31 22:05:54,693 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:05:54,715 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 22:05:54,761 WARN L251 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_08f63e3d-e0b5-4d81-a989-8cdc84e84a45/sv-benchmarks/c/weaver/popl20-three-array-sum.wvr.c[2730,2743] [2024-10-31 22:05:54,771 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:05:54,793 INFO L204 MainTranslator]: Completed translation [2024-10-31 22:05:54,794 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:05:54 WrapperNode [2024-10-31 22:05:54,794 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:05:54,796 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 22:05:54,796 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 22:05:54,796 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 22:05:54,806 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:05:54" (1/1) ... [2024-10-31 22:05:54,815 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:05:54" (1/1) ... [2024-10-31 22:05:54,851 INFO L138 Inliner]: procedures = 25, calls = 29, calls flagged for inlining = 8, calls inlined = 12, statements flattened = 138 [2024-10-31 22:05:54,852 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 22:05:54,853 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 22:05:54,853 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 22:05:54,853 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 22:05:54,866 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:05:54" (1/1) ... [2024-10-31 22:05:54,866 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:05:54" (1/1) ... [2024-10-31 22:05:54,870 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:05:54" (1/1) ... [2024-10-31 22:05:54,889 INFO L175 MemorySlicer]: Split 11 memory accesses to 2 slices as follows [2, 9]. 82 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 4 writes are split as follows [0, 4]. [2024-10-31 22:05:54,889 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:05:54" (1/1) ... [2024-10-31 22:05:54,889 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:05:54" (1/1) ... [2024-10-31 22:05:54,897 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:05:54" (1/1) ... [2024-10-31 22:05:54,903 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:05:54" (1/1) ... [2024-10-31 22:05:54,905 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:05:54" (1/1) ... [2024-10-31 22:05:54,907 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:05:54" (1/1) ... [2024-10-31 22:05:54,910 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 22:05:54,911 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 22:05:54,911 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 22:05:54,912 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 22:05:54,913 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:05:54" (1/1) ... [2024-10-31 22:05:54,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:05:54,939 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08f63e3d-e0b5-4d81-a989-8cdc84e84a45/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:05:54,973 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08f63e3d-e0b5-4d81-a989-8cdc84e84a45/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 22:05:54,983 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08f63e3d-e0b5-4d81-a989-8cdc84e84a45/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 22:05:55,038 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 22:05:55,041 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-31 22:05:55,041 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-31 22:05:55,041 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-31 22:05:55,042 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-31 22:05:55,042 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-31 22:05:55,043 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-31 22:05:55,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-31 22:05:55,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-31 22:05:55,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-31 22:05:55,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-31 22:05:55,045 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-31 22:05:55,045 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-31 22:05:55,045 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-31 22:05:55,045 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 22:05:55,045 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 22:05:55,046 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-31 22:05:55,046 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-31 22:05:55,047 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-31 22:05:55,241 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 22:05:55,244 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 22:05:55,789 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-31 22:05:55,789 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 22:05:56,354 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 22:05:56,358 INFO L316 CfgBuilder]: Removed 6 assume(true) statements. [2024-10-31 22:05:56,358 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:05:56 BoogieIcfgContainer [2024-10-31 22:05:56,358 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 22:05:56,360 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 22:05:56,363 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 22:05:56,367 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 22:05:56,368 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 10:05:54" (1/3) ... [2024-10-31 22:05:56,369 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ad844ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:05:56, skipping insertion in model container [2024-10-31 22:05:56,370 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:05:54" (2/3) ... [2024-10-31 22:05:56,371 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ad844ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:05:56, skipping insertion in model container [2024-10-31 22:05:56,371 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:05:56" (3/3) ... [2024-10-31 22:05:56,373 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-three-array-sum.wvr.c [2024-10-31 22:05:56,393 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 22:05:56,394 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-31 22:05:56,394 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-31 22:05:56,466 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-31 22:05:56,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 42 places, 39 transitions, 99 flow [2024-10-31 22:05:56,574 INFO L124 PetriNetUnfolderBase]: 7/36 cut-off events. [2024-10-31 22:05:56,574 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-31 22:05:56,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49 conditions, 36 events. 7/36 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 41 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 26. Up to 2 conditions per place. [2024-10-31 22:05:56,578 INFO L82 GeneralOperation]: Start removeDead. Operand has 42 places, 39 transitions, 99 flow [2024-10-31 22:05:56,583 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 38 places, 35 transitions, 88 flow [2024-10-31 22:05:56,598 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:05:56,606 INFO L333 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, 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;@2febd32d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:05:56,607 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-10-31 22:05:56,636 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-31 22:05:56,637 INFO L124 PetriNetUnfolderBase]: 7/34 cut-off events. [2024-10-31 22:05:56,637 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-31 22:05:56,637 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:05:56,638 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:05:56,639 INFO L396 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)] === [2024-10-31 22:05:56,647 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:05:56,647 INFO L85 PathProgramCache]: Analyzing trace with hash -1514226813, now seen corresponding path program 1 times [2024-10-31 22:05:56,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:05:56,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325051264] [2024-10-31 22:05:56,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:05:56,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:05:56,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:05:57,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:05:57,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:05:57,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325051264] [2024-10-31 22:05:57,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325051264] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:05:57,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:05:57,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:05:57,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484215478] [2024-10-31 22:05:57,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:05:57,683 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:05:57,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:05:57,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:05:57,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:05:57,733 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-10-31 22:05:57,736 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 35 transitions, 88 flow. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:05:57,736 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:05:57,736 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-10-31 22:05:57,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:05:58,284 INFO L124 PetriNetUnfolderBase]: 638/1043 cut-off events. [2024-10-31 22:05:58,284 INFO L125 PetriNetUnfolderBase]: For 93/93 co-relation queries the response was YES. [2024-10-31 22:05:58,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2000 conditions, 1043 events. 638/1043 cut-off events. For 93/93 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 4669 event pairs, 172 based on Foata normal form. 1/905 useless extension candidates. Maximal degree in co-relation 1709. Up to 535 conditions per place. [2024-10-31 22:05:58,314 INFO L140 encePairwiseOnDemand]: 35/39 looper letters, 42 selfloop transitions, 3 changer transitions 1/53 dead transitions. [2024-10-31 22:05:58,314 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 53 transitions, 231 flow [2024-10-31 22:05:58,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:05:58,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:05:58,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 77 transitions. [2024-10-31 22:05:58,344 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6581196581196581 [2024-10-31 22:05:58,349 INFO L175 Difference]: Start difference. First operand has 38 places, 35 transitions, 88 flow. Second operand 3 states and 77 transitions. [2024-10-31 22:05:58,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 53 transitions, 231 flow [2024-10-31 22:05:58,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 53 transitions, 209 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-10-31 22:05:58,365 INFO L231 Difference]: Finished difference. Result has 35 places, 37 transitions, 95 flow [2024-10-31 22:05:58,367 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, 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=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=95, PETRI_PLACES=35, PETRI_TRANSITIONS=37} [2024-10-31 22:05:58,375 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, -3 predicate places. [2024-10-31 22:05:58,375 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 37 transitions, 95 flow [2024-10-31 22:05:58,375 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:05:58,376 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:05:58,377 INFO L204 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] [2024-10-31 22:05:58,377 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 22:05:58,378 INFO L396 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)] === [2024-10-31 22:05:58,379 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:05:58,379 INFO L85 PathProgramCache]: Analyzing trace with hash -1402878651, now seen corresponding path program 1 times [2024-10-31 22:05:58,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:05:58,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741064745] [2024-10-31 22:05:58,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:05:58,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:05:58,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:05:58,625 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:05:58,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:05:58,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741064745] [2024-10-31 22:05:58,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741064745] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:05:58,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:05:58,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 22:05:58,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555285757] [2024-10-31 22:05:58,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:05:58,631 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:05:58,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:05:58,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:05:58,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:05:58,652 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-10-31 22:05:58,652 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 37 transitions, 95 flow. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:05:58,653 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:05:58,653 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-10-31 22:05:58,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:05:59,211 INFO L124 PetriNetUnfolderBase]: 1070/1919 cut-off events. [2024-10-31 22:05:59,211 INFO L125 PetriNetUnfolderBase]: For 238/238 co-relation queries the response was YES. [2024-10-31 22:05:59,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3698 conditions, 1919 events. 1070/1919 cut-off events. For 238/238 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 10684 event pairs, 566 based on Foata normal form. 58/1855 useless extension candidates. Maximal degree in co-relation 1545. Up to 815 conditions per place. [2024-10-31 22:05:59,226 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 64 selfloop transitions, 15 changer transitions 0/86 dead transitions. [2024-10-31 22:05:59,226 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 86 transitions, 371 flow [2024-10-31 22:05:59,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:05:59,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-31 22:05:59,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 136 transitions. [2024-10-31 22:05:59,229 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5811965811965812 [2024-10-31 22:05:59,229 INFO L175 Difference]: Start difference. First operand has 35 places, 37 transitions, 95 flow. Second operand 6 states and 136 transitions. [2024-10-31 22:05:59,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 86 transitions, 371 flow [2024-10-31 22:05:59,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 86 transitions, 366 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-31 22:05:59,233 INFO L231 Difference]: Finished difference. Result has 43 places, 50 transitions, 196 flow [2024-10-31 22:05:59,233 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=196, PETRI_PLACES=43, PETRI_TRANSITIONS=50} [2024-10-31 22:05:59,234 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 5 predicate places. [2024-10-31 22:05:59,234 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 50 transitions, 196 flow [2024-10-31 22:05:59,235 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:05:59,235 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:05:59,235 INFO L204 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] [2024-10-31 22:05:59,235 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-31 22:05:59,236 INFO L396 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)] === [2024-10-31 22:05:59,236 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:05:59,237 INFO L85 PathProgramCache]: Analyzing trace with hash 680298853, now seen corresponding path program 1 times [2024-10-31 22:05:59,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:05:59,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605059777] [2024-10-31 22:05:59,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:05:59,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:05:59,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:05:59,501 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-31 22:05:59,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:05:59,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605059777] [2024-10-31 22:05:59,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605059777] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:05:59,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1762614541] [2024-10-31 22:05:59,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:05:59,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:05:59,506 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08f63e3d-e0b5-4d81-a989-8cdc84e84a45/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:05:59,515 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08f63e3d-e0b5-4d81-a989-8cdc84e84a45/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:05:59,521 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08f63e3d-e0b5-4d81-a989-8cdc84e84a45/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-31 22:05:59,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:05:59,685 INFO L255 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-31 22:05:59,692 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:05:59,826 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-31 22:05:59,827 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:05:59,925 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-31 22:05:59,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1762614541] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-31 22:05:59,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-31 22:05:59,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2024-10-31 22:05:59,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538482188] [2024-10-31 22:05:59,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:05:59,928 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:05:59,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:05:59,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:05:59,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-10-31 22:05:59,942 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-10-31 22:05:59,942 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 50 transitions, 196 flow. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:05:59,943 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:05:59,943 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-10-31 22:05:59,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:06:00,740 INFO L124 PetriNetUnfolderBase]: 2124/3584 cut-off events. [2024-10-31 22:06:00,742 INFO L125 PetriNetUnfolderBase]: For 1808/1808 co-relation queries the response was YES. [2024-10-31 22:06:00,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7970 conditions, 3584 events. 2124/3584 cut-off events. For 1808/1808 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 20538 event pairs, 780 based on Foata normal form. 0/3217 useless extension candidates. Maximal degree in co-relation 3477. Up to 1155 conditions per place. [2024-10-31 22:06:00,777 INFO L140 encePairwiseOnDemand]: 30/39 looper letters, 85 selfloop transitions, 10 changer transitions 0/101 dead transitions. [2024-10-31 22:06:00,777 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 101 transitions, 556 flow [2024-10-31 22:06:00,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:06:00,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-31 22:06:00,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 133 transitions. [2024-10-31 22:06:00,780 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5683760683760684 [2024-10-31 22:06:00,781 INFO L175 Difference]: Start difference. First operand has 43 places, 50 transitions, 196 flow. Second operand 6 states and 133 transitions. [2024-10-31 22:06:00,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 101 transitions, 556 flow [2024-10-31 22:06:00,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 101 transitions, 556 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-31 22:06:00,787 INFO L231 Difference]: Finished difference. Result has 51 places, 56 transitions, 260 flow [2024-10-31 22:06:00,788 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=260, PETRI_PLACES=51, PETRI_TRANSITIONS=56} [2024-10-31 22:06:00,789 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 13 predicate places. [2024-10-31 22:06:00,789 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 56 transitions, 260 flow [2024-10-31 22:06:00,789 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:06:00,790 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:06:00,790 INFO L204 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] [2024-10-31 22:06:00,814 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08f63e3d-e0b5-4d81-a989-8cdc84e84a45/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-31 22:06:00,990 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08f63e3d-e0b5-4d81-a989-8cdc84e84a45/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:06:00,995 INFO L396 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)] === [2024-10-31 22:06:00,996 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:06:00,996 INFO L85 PathProgramCache]: Analyzing trace with hash -1279354192, now seen corresponding path program 1 times [2024-10-31 22:06:00,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:06:00,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047170529] [2024-10-31 22:06:00,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:06:00,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:06:01,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:06:01,224 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:06:01,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:06:01,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047170529] [2024-10-31 22:06:01,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047170529] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:06:01,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:06:01,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 22:06:01,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609772542] [2024-10-31 22:06:01,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:06:01,228 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:06:01,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:06:01,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:06:01,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:06:01,244 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-10-31 22:06:01,244 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 56 transitions, 260 flow. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:06:01,244 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:06:01,244 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-10-31 22:06:01,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:06:01,756 INFO L124 PetriNetUnfolderBase]: 1372/2233 cut-off events. [2024-10-31 22:06:01,756 INFO L125 PetriNetUnfolderBase]: For 1784/1784 co-relation queries the response was YES. [2024-10-31 22:06:01,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5803 conditions, 2233 events. 1372/2233 cut-off events. For 1784/1784 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 10893 event pairs, 793 based on Foata normal form. 2/2086 useless extension candidates. Maximal degree in co-relation 3741. Up to 1248 conditions per place. [2024-10-31 22:06:01,772 INFO L140 encePairwiseOnDemand]: 30/39 looper letters, 28 selfloop transitions, 6 changer transitions 37/78 dead transitions. [2024-10-31 22:06:01,772 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 78 transitions, 458 flow [2024-10-31 22:06:01,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:06:01,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-31 22:06:01,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 120 transitions. [2024-10-31 22:06:01,775 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5128205128205128 [2024-10-31 22:06:01,775 INFO L175 Difference]: Start difference. First operand has 51 places, 56 transitions, 260 flow. Second operand 6 states and 120 transitions. [2024-10-31 22:06:01,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 78 transitions, 458 flow [2024-10-31 22:06:01,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 78 transitions, 458 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-31 22:06:01,786 INFO L231 Difference]: Finished difference. Result has 58 places, 41 transitions, 179 flow [2024-10-31 22:06:01,786 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=179, PETRI_PLACES=58, PETRI_TRANSITIONS=41} [2024-10-31 22:06:01,788 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 20 predicate places. [2024-10-31 22:06:01,788 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 41 transitions, 179 flow [2024-10-31 22:06:01,789 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:06:01,789 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:06:01,789 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:06:01,789 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-31 22:06:01,790 INFO L396 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)] === [2024-10-31 22:06:01,790 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:06:01,790 INFO L85 PathProgramCache]: Analyzing trace with hash -463702353, now seen corresponding path program 1 times [2024-10-31 22:06:01,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:06:01,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750436928] [2024-10-31 22:06:01,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:06:01,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:06:01,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:06:01,970 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-31 22:06:01,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:06:01,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750436928] [2024-10-31 22:06:01,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750436928] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:06:01,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1468285337] [2024-10-31 22:06:01,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:06:01,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:06:01,972 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08f63e3d-e0b5-4d81-a989-8cdc84e84a45/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:06:01,974 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08f63e3d-e0b5-4d81-a989-8cdc84e84a45/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:06:01,975 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08f63e3d-e0b5-4d81-a989-8cdc84e84a45/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-31 22:06:02,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:06:02,097 INFO L255 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-31 22:06:02,098 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:06:02,168 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-31 22:06:02,168 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:06:02,238 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-31 22:06:02,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1468285337] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-31 22:06:02,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-31 22:06:02,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2024-10-31 22:06:02,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918023913] [2024-10-31 22:06:02,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:06:02,240 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:06:02,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:06:02,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:06:02,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-10-31 22:06:02,252 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-10-31 22:06:02,253 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 41 transitions, 179 flow. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:06:02,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:06:02,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-10-31 22:06:02,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:06:02,515 INFO L124 PetriNetUnfolderBase]: 910/1560 cut-off events. [2024-10-31 22:06:02,515 INFO L125 PetriNetUnfolderBase]: For 1135/1135 co-relation queries the response was YES. [2024-10-31 22:06:02,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3929 conditions, 1560 events. 910/1560 cut-off events. For 1135/1135 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 7687 event pairs, 290 based on Foata normal form. 72/1536 useless extension candidates. Maximal degree in co-relation 3901. Up to 647 conditions per place. [2024-10-31 22:06:02,528 INFO L140 encePairwiseOnDemand]: 33/39 looper letters, 41 selfloop transitions, 5 changer transitions 0/53 dead transitions. [2024-10-31 22:06:02,528 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 53 transitions, 321 flow [2024-10-31 22:06:02,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 22:06:02,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-31 22:06:02,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 87 transitions. [2024-10-31 22:06:02,529 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4461538461538462 [2024-10-31 22:06:02,530 INFO L175 Difference]: Start difference. First operand has 58 places, 41 transitions, 179 flow. Second operand 5 states and 87 transitions. [2024-10-31 22:06:02,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 53 transitions, 321 flow [2024-10-31 22:06:02,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 53 transitions, 262 flow, removed 16 selfloop flow, removed 11 redundant places. [2024-10-31 22:06:02,537 INFO L231 Difference]: Finished difference. Result has 46 places, 42 transitions, 155 flow [2024-10-31 22:06:02,537 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=155, PETRI_PLACES=46, PETRI_TRANSITIONS=42} [2024-10-31 22:06:02,538 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 8 predicate places. [2024-10-31 22:06:02,538 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 42 transitions, 155 flow [2024-10-31 22:06:02,538 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:06:02,538 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:06:02,538 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:06:02,560 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08f63e3d-e0b5-4d81-a989-8cdc84e84a45/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-31 22:06:02,739 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08f63e3d-e0b5-4d81-a989-8cdc84e84a45/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:06:02,739 INFO L396 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)] === [2024-10-31 22:06:02,740 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:06:02,740 INFO L85 PathProgramCache]: Analyzing trace with hash -327834966, now seen corresponding path program 1 times [2024-10-31 22:06:02,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:06:02,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480342962] [2024-10-31 22:06:02,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:06:02,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:06:02,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:06:02,898 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-31 22:06:02,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:06:02,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480342962] [2024-10-31 22:06:02,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480342962] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:06:02,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2040174838] [2024-10-31 22:06:02,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:06:02,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:06:02,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08f63e3d-e0b5-4d81-a989-8cdc84e84a45/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:06:02,902 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08f63e3d-e0b5-4d81-a989-8cdc84e84a45/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:06:02,904 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08f63e3d-e0b5-4d81-a989-8cdc84e84a45/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-31 22:06:03,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:06:03,038 INFO L255 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-31 22:06:03,041 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:06:03,105 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-31 22:06:03,107 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:06:03,173 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-31 22:06:03,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2040174838] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-31 22:06:03,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-31 22:06:03,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2024-10-31 22:06:03,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796569125] [2024-10-31 22:06:03,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:06:03,176 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:06:03,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:06:03,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:06:03,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-10-31 22:06:03,190 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-10-31 22:06:03,191 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 42 transitions, 155 flow. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:06:03,191 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:06:03,191 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-10-31 22:06:03,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:06:03,461 INFO L124 PetriNetUnfolderBase]: 686/1207 cut-off events. [2024-10-31 22:06:03,461 INFO L125 PetriNetUnfolderBase]: For 694/694 co-relation queries the response was YES. [2024-10-31 22:06:03,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2942 conditions, 1207 events. 686/1207 cut-off events. For 694/694 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 5626 event pairs, 328 based on Foata normal form. 62/1200 useless extension candidates. Maximal degree in co-relation 2900. Up to 708 conditions per place. [2024-10-31 22:06:03,472 INFO L140 encePairwiseOnDemand]: 34/39 looper letters, 43 selfloop transitions, 5 changer transitions 0/57 dead transitions. [2024-10-31 22:06:03,473 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 57 transitions, 307 flow [2024-10-31 22:06:03,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 22:06:03,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-31 22:06:03,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 94 transitions. [2024-10-31 22:06:03,475 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48205128205128206 [2024-10-31 22:06:03,475 INFO L175 Difference]: Start difference. First operand has 46 places, 42 transitions, 155 flow. Second operand 5 states and 94 transitions. [2024-10-31 22:06:03,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 57 transitions, 307 flow [2024-10-31 22:06:03,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 57 transitions, 299 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-31 22:06:03,482 INFO L231 Difference]: Finished difference. Result has 48 places, 43 transitions, 170 flow [2024-10-31 22:06:03,482 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=149, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=170, PETRI_PLACES=48, PETRI_TRANSITIONS=43} [2024-10-31 22:06:03,483 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 10 predicate places. [2024-10-31 22:06:03,484 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 43 transitions, 170 flow [2024-10-31 22:06:03,485 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:06:03,485 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:06:03,485 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:06:03,511 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08f63e3d-e0b5-4d81-a989-8cdc84e84a45/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-31 22:06:03,689 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08f63e3d-e0b5-4d81-a989-8cdc84e84a45/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-10-31 22:06:03,690 INFO L396 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)] === [2024-10-31 22:06:03,690 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:06:03,690 INFO L85 PathProgramCache]: Analyzing trace with hash -1503818552, now seen corresponding path program 1 times [2024-10-31 22:06:03,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:06:03,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925629566] [2024-10-31 22:06:03,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:06:03,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:06:03,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:06:05,737 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-31 22:06:05,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:06:05,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925629566] [2024-10-31 22:06:05,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925629566] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:06:05,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1636974388] [2024-10-31 22:06:05,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:06:05,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:06:05,739 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08f63e3d-e0b5-4d81-a989-8cdc84e84a45/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:06:05,741 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08f63e3d-e0b5-4d81-a989-8cdc84e84a45/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:06:05,744 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08f63e3d-e0b5-4d81-a989-8cdc84e84a45/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-31 22:06:06,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:06:06,015 INFO L255 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-10-31 22:06:06,018 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:06:06,365 INFO L349 Elim1Store]: treesize reduction 36, result has 54.4 percent of original size [2024-10-31 22:06:06,366 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 36 treesize of output 58 [2024-10-31 22:06:08,322 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-31 22:06:08,323 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 107 treesize of output 499 [2024-10-31 22:06:18,723 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-31 22:06:18,723 INFO L311 TraceCheckSpWp]: Computing backward predicates...