./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-more-mts.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b 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_40dcdcad-f565-4fa1-be46-a0138572c58d/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40dcdcad-f565-4fa1-be46-a0138572c58d/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40dcdcad-f565-4fa1-be46-a0138572c58d/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40dcdcad-f565-4fa1-be46-a0138572c58d/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-mts.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40dcdcad-f565-4fa1-be46-a0138572c58d/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40dcdcad-f565-4fa1-be46-a0138572c58d/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --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 9d38eb9d6ba70070fe3ced1aec90f1c3400cc1f89786e1bd625a19020cb0869f --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:28:41,107 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:28:41,225 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40dcdcad-f565-4fa1-be46-a0138572c58d/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 22:28:41,234 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:28:41,235 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:28:41,266 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:28:41,269 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:28:41,270 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:28:41,271 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:28:41,272 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:28:41,274 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:28:41,274 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:28:41,275 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:28:41,278 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:28:41,278 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:28:41,279 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:28:41,281 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:28:41,285 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:28:41,286 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:28:41,287 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:28:41,287 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:28:41,288 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:28:41,288 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:28:41,289 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:28:41,289 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:28:41,290 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:28:41,290 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:28:41,291 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:28:41,291 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:28:41,292 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:28:41,292 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:28:41,293 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:28:41,293 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:28:41,293 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:28:41,294 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:28:41,294 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:28:41,295 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:28:41,295 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:28:41,296 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:28:41,296 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_40dcdcad-f565-4fa1-be46-a0138572c58d/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40dcdcad-f565-4fa1-be46-a0138572c58d/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9d38eb9d6ba70070fe3ced1aec90f1c3400cc1f89786e1bd625a19020cb0869f [2023-11-06 22:28:41,683 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:28:41,734 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:28:41,737 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:28:41,740 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:28:41,741 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:28:41,742 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40dcdcad-f565-4fa1-be46-a0138572c58d/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/weaver/popl20-more-mts.wvr.c [2023-11-06 22:28:45,623 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:28:45,940 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:28:45,941 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40dcdcad-f565-4fa1-be46-a0138572c58d/sv-benchmarks/c/weaver/popl20-more-mts.wvr.c [2023-11-06 22:28:45,952 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40dcdcad-f565-4fa1-be46-a0138572c58d/bin/uautomizer-verify-WvqO1wxjHP/data/41bab857a/e8cc56f8976e40c5b86f9aacb3d26416/FLAGed120161d [2023-11-06 22:28:45,971 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40dcdcad-f565-4fa1-be46-a0138572c58d/bin/uautomizer-verify-WvqO1wxjHP/data/41bab857a/e8cc56f8976e40c5b86f9aacb3d26416 [2023-11-06 22:28:45,975 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:28:45,977 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:28:45,978 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:28:45,979 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:28:45,986 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:28:45,987 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:28:45" (1/1) ... [2023-11-06 22:28:45,989 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@175a58b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:28:45, skipping insertion in model container [2023-11-06 22:28:45,989 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:28:45" (1/1) ... [2023-11-06 22:28:46,020 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:28:46,239 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_40dcdcad-f565-4fa1-be46-a0138572c58d/sv-benchmarks/c/weaver/popl20-more-mts.wvr.c[2533,2546] [2023-11-06 22:28:46,253 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:28:46,266 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:28:46,297 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_40dcdcad-f565-4fa1-be46-a0138572c58d/sv-benchmarks/c/weaver/popl20-more-mts.wvr.c[2533,2546] [2023-11-06 22:28:46,303 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:28:46,314 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:28:46,315 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:28:46,323 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:28:46,324 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:28:46 WrapperNode [2023-11-06 22:28:46,324 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:28:46,326 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:28:46,326 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:28:46,326 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:28:46,336 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:28:46" (1/1) ... [2023-11-06 22:28:46,349 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:28:46" (1/1) ... [2023-11-06 22:28:46,391 INFO L138 Inliner]: procedures = 25, calls = 46, calls flagged for inlining = 13, calls inlined = 19, statements flattened = 231 [2023-11-06 22:28:46,392 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:28:46,393 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:28:46,393 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:28:46,393 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:28:46,404 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:28:46" (1/1) ... [2023-11-06 22:28:46,405 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:28:46" (1/1) ... [2023-11-06 22:28:46,415 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:28:46" (1/1) ... [2023-11-06 22:28:46,417 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:28:46" (1/1) ... [2023-11-06 22:28:46,428 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:28:46" (1/1) ... [2023-11-06 22:28:46,436 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:28:46" (1/1) ... [2023-11-06 22:28:46,440 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:28:46" (1/1) ... [2023-11-06 22:28:46,442 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:28:46" (1/1) ... [2023-11-06 22:28:46,448 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:28:46,449 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:28:46,449 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:28:46,449 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:28:46,450 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:28:46" (1/1) ... [2023-11-06 22:28:46,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:28:46,492 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40dcdcad-f565-4fa1-be46-a0138572c58d/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:28:46,509 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40dcdcad-f565-4fa1-be46-a0138572c58d/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:28:46,554 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40dcdcad-f565-4fa1-be46-a0138572c58d/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:28:46,573 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:28:46,573 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:28:46,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:28:46,573 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 22:28:46,574 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-06 22:28:46,574 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-06 22:28:46,574 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-06 22:28:46,574 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-06 22:28:46,575 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-06 22:28:46,575 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-06 22:28:46,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:28:46,578 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-06 22:28:46,578 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-06 22:28:46,578 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 22:28:46,579 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:28:46,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:28:46,579 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:28:46,581 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-06 22:28:46,793 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:28:46,796 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:28:47,356 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:28:47,635 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:28:47,636 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-06 22:28:47,639 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:28:47 BoogieIcfgContainer [2023-11-06 22:28:47,639 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:28:47,642 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:28:47,642 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:28:47,646 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:28:47,646 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:28:45" (1/3) ... [2023-11-06 22:28:47,647 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f07e94e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:28:47, skipping insertion in model container [2023-11-06 22:28:47,648 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:28:46" (2/3) ... [2023-11-06 22:28:47,648 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f07e94e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:28:47, skipping insertion in model container [2023-11-06 22:28:47,648 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:28:47" (3/3) ... [2023-11-06 22:28:47,652 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-mts.wvr.c [2023-11-06 22:28:47,663 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 22:28:47,676 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:28:47,676 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 22:28:47,676 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 22:28:47,833 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-06 22:28:47,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 222 places, 230 transitions, 481 flow [2023-11-06 22:28:48,057 INFO L124 PetriNetUnfolderBase]: 18/227 cut-off events. [2023-11-06 22:28:48,057 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-06 22:28:48,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 240 conditions, 227 events. 18/227 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 333 event pairs, 0 based on Foata normal form. 0/208 useless extension candidates. Maximal degree in co-relation 188. Up to 2 conditions per place. [2023-11-06 22:28:48,068 INFO L82 GeneralOperation]: Start removeDead. Operand has 222 places, 230 transitions, 481 flow [2023-11-06 22:28:48,084 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 208 places, 216 transitions, 450 flow [2023-11-06 22:28:48,089 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:28:48,103 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 208 places, 216 transitions, 450 flow [2023-11-06 22:28:48,109 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 208 places, 216 transitions, 450 flow [2023-11-06 22:28:48,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 208 places, 216 transitions, 450 flow [2023-11-06 22:28:48,242 INFO L124 PetriNetUnfolderBase]: 18/216 cut-off events. [2023-11-06 22:28:48,243 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-06 22:28:48,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 229 conditions, 216 events. 18/216 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 339 event pairs, 0 based on Foata normal form. 0/198 useless extension candidates. Maximal degree in co-relation 188. Up to 2 conditions per place. [2023-11-06 22:28:48,261 INFO L119 LiptonReduction]: Number of co-enabled transitions 9222 [2023-11-06 22:28:58,863 INFO L134 LiptonReduction]: Checked pairs total: 8672 [2023-11-06 22:28:58,863 INFO L136 LiptonReduction]: Total number of compositions: 239 [2023-11-06 22:28:58,884 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:28:58,892 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=LoopsAndPotentialCycles, 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;@777dbe33, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:28:58,893 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-06 22:28:58,903 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:28:58,904 INFO L124 PetriNetUnfolderBase]: 4/25 cut-off events. [2023-11-06 22:28:58,904 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-06 22:28:58,904 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:28:58,905 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:28:58,906 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)] === [2023-11-06 22:28:58,912 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:28:58,913 INFO L85 PathProgramCache]: Analyzing trace with hash -1588537107, now seen corresponding path program 1 times [2023-11-06 22:28:58,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:28:58,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278115603] [2023-11-06 22:28:58,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:28:58,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:28:59,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:28:59,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:28:59,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:28:59,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278115603] [2023-11-06 22:28:59,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278115603] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:28:59,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:28:59,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:28:59,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684531137] [2023-11-06 22:28:59,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:28:59,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:28:59,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:28:59,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:28:59,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:28:59,816 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 469 [2023-11-06 22:28:59,825 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 26 transitions, 70 flow. Second operand has 3 states, 3 states have (on average 213.66666666666666) internal successors, (641), 3 states have internal predecessors, (641), 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) [2023-11-06 22:28:59,826 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:28:59,826 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 469 [2023-11-06 22:28:59,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:29:00,188 INFO L124 PetriNetUnfolderBase]: 619/873 cut-off events. [2023-11-06 22:29:00,189 INFO L125 PetriNetUnfolderBase]: For 65/65 co-relation queries the response was YES. [2023-11-06 22:29:00,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1825 conditions, 873 events. 619/873 cut-off events. For 65/65 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3368 event pairs, 95 based on Foata normal form. 1/587 useless extension candidates. Maximal degree in co-relation 1491. Up to 688 conditions per place. [2023-11-06 22:29:00,202 INFO L140 encePairwiseOnDemand]: 464/469 looper letters, 36 selfloop transitions, 4 changer transitions 1/44 dead transitions. [2023-11-06 22:29:00,203 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 44 transitions, 203 flow [2023-11-06 22:29:00,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:29:00,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:29:00,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 666 transitions. [2023-11-06 22:29:00,240 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47334754797441364 [2023-11-06 22:29:00,241 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 666 transitions. [2023-11-06 22:29:00,242 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 666 transitions. [2023-11-06 22:29:00,248 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:29:00,251 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 666 transitions. [2023-11-06 22:29:00,261 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 222.0) internal successors, (666), 3 states have internal predecessors, (666), 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) [2023-11-06 22:29:00,274 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 469.0) internal successors, (1876), 4 states have internal predecessors, (1876), 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) [2023-11-06 22:29:00,276 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 469.0) internal successors, (1876), 4 states have internal predecessors, (1876), 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) [2023-11-06 22:29:00,279 INFO L175 Difference]: Start difference. First operand has 32 places, 26 transitions, 70 flow. Second operand 3 states and 666 transitions. [2023-11-06 22:29:00,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 44 transitions, 203 flow [2023-11-06 22:29:00,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 44 transitions, 181 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-06 22:29:00,293 INFO L231 Difference]: Finished difference. Result has 29 places, 29 transitions, 84 flow [2023-11-06 22:29:00,296 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=469, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=84, PETRI_PLACES=29, PETRI_TRANSITIONS=29} [2023-11-06 22:29:00,302 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, -3 predicate places. [2023-11-06 22:29:00,302 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 29 transitions, 84 flow [2023-11-06 22:29:00,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 213.66666666666666) internal successors, (641), 3 states have internal predecessors, (641), 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) [2023-11-06 22:29:00,304 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:29:00,305 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:29:00,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:29:00,306 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)] === [2023-11-06 22:29:00,319 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:29:00,320 INFO L85 PathProgramCache]: Analyzing trace with hash 1068708610, now seen corresponding path program 1 times [2023-11-06 22:29:00,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:29:00,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996358305] [2023-11-06 22:29:00,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:29:00,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:29:00,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:29:00,625 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:29:00,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:29:00,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996358305] [2023-11-06 22:29:00,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996358305] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:29:00,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:29:00,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:29:00,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989329575] [2023-11-06 22:29:00,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:29:00,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:29:00,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:29:00,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:29:00,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:29:00,685 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 203 out of 469 [2023-11-06 22:29:00,686 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 29 transitions, 84 flow. Second operand has 3 states, 3 states have (on average 209.0) internal successors, (627), 3 states have internal predecessors, (627), 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) [2023-11-06 22:29:00,687 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:29:00,687 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 203 of 469 [2023-11-06 22:29:00,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:29:00,916 INFO L124 PetriNetUnfolderBase]: 570/825 cut-off events. [2023-11-06 22:29:00,916 INFO L125 PetriNetUnfolderBase]: For 150/156 co-relation queries the response was YES. [2023-11-06 22:29:00,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1931 conditions, 825 events. 570/825 cut-off events. For 150/156 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3306 event pairs, 318 based on Foata normal form. 0/648 useless extension candidates. Maximal degree in co-relation 372. Up to 803 conditions per place. [2023-11-06 22:29:00,926 INFO L140 encePairwiseOnDemand]: 466/469 looper letters, 25 selfloop transitions, 2 changer transitions 0/30 dead transitions. [2023-11-06 22:29:00,927 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 30 transitions, 140 flow [2023-11-06 22:29:00,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:29:00,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:29:00,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 634 transitions. [2023-11-06 22:29:00,931 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4506041222459133 [2023-11-06 22:29:00,932 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 634 transitions. [2023-11-06 22:29:00,932 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 634 transitions. [2023-11-06 22:29:00,933 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:29:00,933 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 634 transitions. [2023-11-06 22:29:00,936 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 211.33333333333334) internal successors, (634), 3 states have internal predecessors, (634), 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) [2023-11-06 22:29:00,941 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 469.0) internal successors, (1876), 4 states have internal predecessors, (1876), 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) [2023-11-06 22:29:00,944 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 469.0) internal successors, (1876), 4 states have internal predecessors, (1876), 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) [2023-11-06 22:29:00,944 INFO L175 Difference]: Start difference. First operand has 29 places, 29 transitions, 84 flow. Second operand 3 states and 634 transitions. [2023-11-06 22:29:00,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 30 transitions, 140 flow [2023-11-06 22:29:00,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 30 transitions, 136 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:29:00,948 INFO L231 Difference]: Finished difference. Result has 31 places, 30 transitions, 92 flow [2023-11-06 22:29:00,948 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=469, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=92, PETRI_PLACES=31, PETRI_TRANSITIONS=30} [2023-11-06 22:29:00,950 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, -1 predicate places. [2023-11-06 22:29:00,950 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 30 transitions, 92 flow [2023-11-06 22:29:00,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 209.0) internal successors, (627), 3 states have internal predecessors, (627), 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) [2023-11-06 22:29:00,951 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:29:00,952 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] [2023-11-06 22:29:00,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 22:29:00,953 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)] === [2023-11-06 22:29:00,953 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:29:00,954 INFO L85 PathProgramCache]: Analyzing trace with hash 318793194, now seen corresponding path program 1 times [2023-11-06 22:29:00,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:29:00,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333520332] [2023-11-06 22:29:00,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:29:00,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:29:00,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:29:01,135 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:29:01,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:29:01,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333520332] [2023-11-06 22:29:01,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333520332] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:29:01,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1898921121] [2023-11-06 22:29:01,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:29:01,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:29:01,137 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40dcdcad-f565-4fa1-be46-a0138572c58d/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:29:01,144 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40dcdcad-f565-4fa1-be46-a0138572c58d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:29:01,179 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40dcdcad-f565-4fa1-be46-a0138572c58d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:29:01,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:29:01,316 INFO L262 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:29:01,323 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:29:01,404 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:29:01,404 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:29:01,457 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:29:01,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1898921121] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-06 22:29:01,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:29:01,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 9 [2023-11-06 22:29:01,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010666372] [2023-11-06 22:29:01,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:29:01,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:29:01,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:29:01,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:29:01,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:29:01,587 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 469 [2023-11-06 22:29:01,589 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 30 transitions, 92 flow. Second operand has 5 states, 5 states have (on average 199.0) internal successors, (995), 5 states have internal predecessors, (995), 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) [2023-11-06 22:29:01,590 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:29:01,590 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 469 [2023-11-06 22:29:01,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:29:01,879 INFO L124 PetriNetUnfolderBase]: 621/878 cut-off events. [2023-11-06 22:29:01,879 INFO L125 PetriNetUnfolderBase]: For 138/140 co-relation queries the response was YES. [2023-11-06 22:29:01,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2022 conditions, 878 events. 621/878 cut-off events. For 138/140 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3180 event pairs, 179 based on Foata normal form. 0/740 useless extension candidates. Maximal degree in co-relation 2009. Up to 484 conditions per place. [2023-11-06 22:29:01,891 INFO L140 encePairwiseOnDemand]: 463/469 looper letters, 35 selfloop transitions, 6 changer transitions 0/43 dead transitions. [2023-11-06 22:29:01,891 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 43 transitions, 210 flow [2023-11-06 22:29:01,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:29:01,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:29:01,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1012 transitions. [2023-11-06 22:29:01,898 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43155650319829425 [2023-11-06 22:29:01,898 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1012 transitions. [2023-11-06 22:29:01,898 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1012 transitions. [2023-11-06 22:29:01,899 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:29:01,900 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1012 transitions. [2023-11-06 22:29:01,904 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 202.4) internal successors, (1012), 5 states have internal predecessors, (1012), 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) [2023-11-06 22:29:01,912 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 469.0) internal successors, (2814), 6 states have internal predecessors, (2814), 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) [2023-11-06 22:29:01,915 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 469.0) internal successors, (2814), 6 states have internal predecessors, (2814), 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) [2023-11-06 22:29:01,915 INFO L175 Difference]: Start difference. First operand has 31 places, 30 transitions, 92 flow. Second operand 5 states and 1012 transitions. [2023-11-06 22:29:01,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 43 transitions, 210 flow [2023-11-06 22:29:01,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 43 transitions, 204 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-11-06 22:29:01,919 INFO L231 Difference]: Finished difference. Result has 36 places, 31 transitions, 113 flow [2023-11-06 22:29:01,919 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=469, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=113, PETRI_PLACES=36, PETRI_TRANSITIONS=31} [2023-11-06 22:29:01,920 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 4 predicate places. [2023-11-06 22:29:01,921 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 31 transitions, 113 flow [2023-11-06 22:29:01,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 199.0) internal successors, (995), 5 states have internal predecessors, (995), 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) [2023-11-06 22:29:01,923 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:29:01,923 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] [2023-11-06 22:29:01,938 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40dcdcad-f565-4fa1-be46-a0138572c58d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 22:29:02,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40dcdcad-f565-4fa1-be46-a0138572c58d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:29:02,139 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)] === [2023-11-06 22:29:02,139 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:29:02,140 INFO L85 PathProgramCache]: Analyzing trace with hash 2138250926, now seen corresponding path program 1 times [2023-11-06 22:29:02,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:29:02,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416617431] [2023-11-06 22:29:02,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:29:02,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:29:02,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:29:02,262 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:29:02,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:29:02,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416617431] [2023-11-06 22:29:02,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416617431] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:29:02,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:29:02,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:29:02,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355217840] [2023-11-06 22:29:02,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:29:02,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:29:02,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:29:02,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:29:02,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:29:02,315 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 469 [2023-11-06 22:29:02,317 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 31 transitions, 113 flow. Second operand has 4 states, 4 states have (on average 206.25) internal successors, (825), 4 states have internal predecessors, (825), 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) [2023-11-06 22:29:02,317 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:29:02,317 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 469 [2023-11-06 22:29:02,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:29:02,615 INFO L124 PetriNetUnfolderBase]: 580/828 cut-off events. [2023-11-06 22:29:02,615 INFO L125 PetriNetUnfolderBase]: For 585/691 co-relation queries the response was YES. [2023-11-06 22:29:02,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2215 conditions, 828 events. 580/828 cut-off events. For 585/691 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 3061 event pairs, 250 based on Foata normal form. 158/882 useless extension candidates. Maximal degree in co-relation 2194. Up to 639 conditions per place. [2023-11-06 22:29:02,626 INFO L140 encePairwiseOnDemand]: 465/469 looper letters, 40 selfloop transitions, 4 changer transitions 0/46 dead transitions. [2023-11-06 22:29:02,626 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 46 transitions, 259 flow [2023-11-06 22:29:02,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:29:02,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:29:02,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 841 transitions. [2023-11-06 22:29:02,632 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4482942430703625 [2023-11-06 22:29:02,632 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 841 transitions. [2023-11-06 22:29:02,633 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 841 transitions. [2023-11-06 22:29:02,634 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:29:02,634 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 841 transitions. [2023-11-06 22:29:02,638 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 210.25) internal successors, (841), 4 states have internal predecessors, (841), 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) [2023-11-06 22:29:02,646 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 469.0) internal successors, (2345), 5 states have internal predecessors, (2345), 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) [2023-11-06 22:29:02,648 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 469.0) internal successors, (2345), 5 states have internal predecessors, (2345), 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) [2023-11-06 22:29:02,649 INFO L175 Difference]: Start difference. First operand has 36 places, 31 transitions, 113 flow. Second operand 4 states and 841 transitions. [2023-11-06 22:29:02,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 46 transitions, 259 flow [2023-11-06 22:29:02,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 46 transitions, 249 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-06 22:29:02,653 INFO L231 Difference]: Finished difference. Result has 37 places, 32 transitions, 125 flow [2023-11-06 22:29:02,653 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=469, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=125, PETRI_PLACES=37, PETRI_TRANSITIONS=32} [2023-11-06 22:29:02,655 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 5 predicate places. [2023-11-06 22:29:02,655 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 32 transitions, 125 flow [2023-11-06 22:29:02,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 206.25) internal successors, (825), 4 states have internal predecessors, (825), 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) [2023-11-06 22:29:02,657 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:29:02,657 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] [2023-11-06 22:29:02,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 22:29:02,658 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)] === [2023-11-06 22:29:02,661 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:29:02,661 INFO L85 PathProgramCache]: Analyzing trace with hash -328071311, now seen corresponding path program 1 times [2023-11-06 22:29:02,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:29:02,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109787566] [2023-11-06 22:29:02,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:29:02,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:29:02,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:29:05,252 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:29:05,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:29:05,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109787566] [2023-11-06 22:29:05,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109787566] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:29:05,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2110929657] [2023-11-06 22:29:05,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:29:05,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:29:05,254 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40dcdcad-f565-4fa1-be46-a0138572c58d/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:29:05,256 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40dcdcad-f565-4fa1-be46-a0138572c58d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:29:05,283 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40dcdcad-f565-4fa1-be46-a0138572c58d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 22:29:05,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:29:05,466 INFO L262 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 59 conjunts are in the unsatisfiable core [2023-11-06 22:29:05,473 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:29:05,673 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-06 22:29:05,810 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:29:06,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:29:06,139 INFO L351 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 16 treesize of output 11 [2023-11-06 22:29:06,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:29:06,597 INFO L351 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 54 treesize of output 41 [2023-11-06 22:29:07,009 INFO L351 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 82 treesize of output 46 [2023-11-06 22:29:07,422 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:29:07,422 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:29:08,321 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse0 (+ c_~sum~0 c_~mts2~0)) (.cse2 (+ c_~A~0.offset (* 4 c_~M~0))) (.cse8 (= c_~mts1~0 0))) (and (or (< .cse0 (+ c_~mts3~0 1)) (forall ((v_ArrVal_113 (Array Int Int))) (let ((.cse1 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_113) c_~A~0.base) .cse2))) (or (< (+ c_~mts3~0 .cse1) 0) (= c_~mts1~0 (+ c_~sum~0 .cse1 c_~mts2~0)))))) (forall ((v_ArrVal_113 (Array Int Int))) (let ((.cse3 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_113) c_~A~0.base) .cse2))) (let ((.cse4 (+ c_~sum~0 .cse3 c_~mts2~0))) (or (< 0 (+ c_~mts3~0 .cse3 1)) (< .cse4 1) (= c_~mts1~0 .cse4))))) (or (forall ((v_ArrVal_113 (Array Int Int))) (let ((.cse5 (+ c_~mts3~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_113) c_~A~0.base) .cse2)))) (or (< .cse5 0) (= c_~mts1~0 .cse5)))) (< c_~mts3~0 .cse0)) (forall ((v_ArrVal_113 (Array Int Int))) (let ((.cse7 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_113) c_~A~0.base) .cse2))) (let ((.cse6 (+ c_~mts3~0 .cse7))) (or (< .cse6 0) (= c_~mts1~0 .cse6) (= c_~mts1~0 (+ c_~sum~0 .cse7 c_~mts2~0)))))) (or .cse8 (forall ((v_ArrVal_113 (Array Int Int))) (let ((.cse9 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_113) c_~A~0.base) .cse2))) (or (< 0 (+ c_~mts3~0 .cse9 1)) (= c_~mts1~0 (+ c_~sum~0 .cse9 c_~mts2~0)))))) (or (forall ((v_ArrVal_113 (Array Int Int))) (let ((.cse10 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_113) c_~A~0.base) .cse2))) (or (< 0 (+ c_~mts3~0 .cse10 1)) (< 0 (+ c_~sum~0 .cse10 c_~mts2~0))))) .cse8))) is different from false [2023-11-06 22:29:08,686 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse17 (+ c_~sum~0 c_~mts2~0))) (let ((.cse7 (< c_~mts3~0 .cse17)) (.cse9 (< .cse17 (+ c_~mts3~0 1))) (.cse3 (+ c_~A~0.offset (* 4 c_~M~0)))) (and (or (< 2147483647 |c_thread1Thread1of1ForFork2_#t~ret3#1|) (let ((.cse2 (+ (select (select |c_#memory_int| c_~A~0.base) (+ c_~A~0.offset (* |c_thread1Thread1of1ForFork2_~i~0#1| 4))) c_~mts1~0))) (let ((.cse5 (= .cse2 0))) (and (forall ((v_ArrVal_113 (Array Int Int))) (let ((.cse0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_113) c_~A~0.base) .cse3))) (let ((.cse1 (+ c_~sum~0 .cse0 c_~mts2~0))) (or (< 0 (+ c_~mts3~0 .cse0 1)) (= .cse1 .cse2) (< .cse1 1))))) (or (forall ((v_ArrVal_113 (Array Int Int))) (let ((.cse4 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_113) c_~A~0.base) .cse3))) (or (< 0 (+ c_~mts3~0 .cse4 1)) (= (+ c_~sum~0 .cse4 c_~mts2~0) .cse2)))) .cse5) (or (forall ((v_ArrVal_113 (Array Int Int))) (let ((.cse6 (+ c_~mts3~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_113) c_~A~0.base) .cse3)))) (or (< .cse6 0) (= .cse2 .cse6)))) .cse7) (or .cse5 (forall ((v_ArrVal_113 (Array Int Int))) (let ((.cse8 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_113) c_~A~0.base) .cse3))) (or (< 0 (+ c_~mts3~0 .cse8 1)) (< 0 (+ c_~sum~0 .cse8 c_~mts2~0)))))) (or .cse9 (forall ((v_ArrVal_113 (Array Int Int))) (let ((.cse10 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_113) c_~A~0.base) .cse3))) (or (= (+ c_~sum~0 .cse10 c_~mts2~0) .cse2) (< (+ c_~mts3~0 .cse10) 0))))) (forall ((v_ArrVal_113 (Array Int Int))) (let ((.cse11 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_113) c_~A~0.base) .cse3))) (let ((.cse12 (+ c_~mts3~0 .cse11))) (or (= (+ c_~sum~0 .cse11 c_~mts2~0) .cse2) (< .cse12 0) (= .cse2 .cse12)))))))) (< |c_thread1Thread1of1ForFork2_#t~ret3#1| 0)) (or (and (or .cse7 (forall ((v_ArrVal_113 (Array Int Int))) (let ((.cse13 (+ c_~mts3~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_113) c_~A~0.base) .cse3)))) (or (< .cse13 0) (= .cse13 0))))) (forall ((v_ArrVal_113 (Array Int Int))) (let ((.cse14 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_113) c_~A~0.base) .cse3))) (let ((.cse15 (+ c_~mts3~0 .cse14))) (or (= (+ c_~sum~0 .cse14 c_~mts2~0) 0) (< .cse15 0) (= .cse15 0))))) (forall ((v_ArrVal_113 (Array Int Int))) (let ((.cse16 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_113) c_~A~0.base) .cse3))) (or (< 0 (+ c_~mts3~0 .cse16 1)) (< (+ c_~sum~0 .cse16 c_~mts2~0) 1)))) (or .cse9 (forall ((v_ArrVal_113 (Array Int Int))) (< (+ c_~mts3~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_113) c_~A~0.base) .cse3)) 0)))) (< (+ |c_thread1Thread1of1ForFork2_#t~ret3#1| 2147483648) 0) (< 0 (+ |c_thread1Thread1of1ForFork2_#t~ret3#1| 1)))))) is different from false [2023-11-06 22:29:09,941 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse24 (+ c_~sum~0 c_~mts2~0))) (let ((.cse3 (< .cse24 (+ c_~mts3~0 1))) (.cse2 (< c_~mts3~0 .cse24)) (.cse1 (+ c_~A~0.offset (* 4 c_~M~0)))) (and (or (and (or (forall ((v_ArrVal_113 (Array Int Int)) (v_ArrVal_112 (Array Int Int))) (let ((.cse0 (+ c_~mts3~0 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_112) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_113) c_~A~0.base) .cse1)))) (or (= .cse0 0) (< .cse0 0)))) .cse2) (or .cse3 (forall ((v_ArrVal_113 (Array Int Int)) (v_ArrVal_112 (Array Int Int))) (< (+ c_~mts3~0 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_112) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_113) c_~A~0.base) .cse1)) 0))) (forall ((v_ArrVal_113 (Array Int Int)) (v_ArrVal_112 (Array Int Int))) (let ((.cse4 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_112) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_113) c_~A~0.base) .cse1))) (let ((.cse5 (+ c_~mts3~0 .cse4))) (or (= 0 (+ c_~sum~0 c_~mts2~0 .cse4)) (= .cse5 0) (< .cse5 0))))) (forall ((v_ArrVal_113 (Array Int Int)) (v_ArrVal_112 (Array Int Int))) (let ((.cse6 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_112) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_113) c_~A~0.base) .cse1))) (or (< (+ c_~sum~0 c_~mts2~0 .cse6) 1) (< 0 (+ c_~mts3~0 .cse6 1)))))) (< (+ |c_thread1Thread1of1ForFork2_#t~ret3#1| 2147483648) 0) (< 0 (+ |c_thread1Thread1of1ForFork2_#t~ret3#1| 1))) (or (< 2147483647 |c_thread1Thread1of1ForFork2_#t~ret3#1|) (let ((.cse9 (+ c_~A~0.offset (* |c_thread1Thread1of1ForFork2_~i~0#1| 4)))) (and (forall ((v_ArrVal_113 (Array Int Int)) (v_ArrVal_112 (Array Int Int))) (let ((.cse8 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_112))) (let ((.cse10 (select (select (store .cse8 |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_113) c_~A~0.base) .cse1))) (let ((.cse7 (+ c_~sum~0 c_~mts2~0 .cse10))) (or (< .cse7 1) (= (+ c_~mts1~0 (select (select .cse8 c_~A~0.base) .cse9)) .cse7) (< 0 (+ c_~mts3~0 .cse10 1))))))) (or .cse3 (forall ((v_ArrVal_113 (Array Int Int)) (v_ArrVal_112 (Array Int Int))) (let ((.cse11 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_112))) (let ((.cse12 (select (select (store .cse11 |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_113) c_~A~0.base) .cse1))) (or (= (+ c_~mts1~0 (select (select .cse11 c_~A~0.base) .cse9)) (+ c_~sum~0 c_~mts2~0 .cse12)) (< (+ c_~mts3~0 .cse12) 0)))))) (forall ((v_ArrVal_112 (Array Int Int))) (let ((.cse15 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_112))) (let ((.cse13 (+ c_~mts1~0 (select (select .cse15 c_~A~0.base) .cse9)))) (or (forall ((v_ArrVal_113 (Array Int Int))) (let ((.cse14 (select (select (store .cse15 |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_113) c_~A~0.base) .cse1))) (or (= .cse13 (+ c_~sum~0 c_~mts2~0 .cse14)) (< 0 (+ c_~mts3~0 .cse14 1))))) (= .cse13 0))))) (or (forall ((v_ArrVal_113 (Array Int Int)) (v_ArrVal_112 (Array Int Int))) (let ((.cse17 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_112))) (let ((.cse16 (+ c_~mts3~0 (select (select (store .cse17 |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_113) c_~A~0.base) .cse1)))) (or (= .cse16 (+ c_~mts1~0 (select (select .cse17 c_~A~0.base) .cse9))) (< .cse16 0))))) .cse2) (forall ((v_ArrVal_112 (Array Int Int))) (let ((.cse18 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_112))) (or (= (+ c_~mts1~0 (select (select .cse18 c_~A~0.base) .cse9)) 0) (forall ((v_ArrVal_113 (Array Int Int))) (let ((.cse19 (select (select (store .cse18 |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_113) c_~A~0.base) .cse1))) (or (< 0 (+ c_~sum~0 c_~mts2~0 .cse19)) (< 0 (+ c_~mts3~0 .cse19 1)))))))) (forall ((v_ArrVal_113 (Array Int Int)) (v_ArrVal_112 (Array Int Int))) (let ((.cse23 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_112))) (let ((.cse21 (select (select (store .cse23 |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_113) c_~A~0.base) .cse1))) (let ((.cse20 (+ c_~mts1~0 (select (select .cse23 c_~A~0.base) .cse9))) (.cse22 (+ c_~mts3~0 .cse21))) (or (= .cse20 (+ c_~sum~0 c_~mts2~0 .cse21)) (= .cse22 .cse20) (< .cse22 0)))))))) (< |c_thread1Thread1of1ForFork2_#t~ret3#1| 0))))) is different from false [2023-11-06 22:29:14,043 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:29:14,044 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 119 treesize of output 83 [2023-11-06 22:29:14,066 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:29:14,067 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 373 treesize of output 357 [2023-11-06 22:29:14,136 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:29:14,137 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 184 treesize of output 176 [2023-11-06 22:29:14,162 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 299 treesize of output 275 [2023-11-06 22:29:14,190 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 275 treesize of output 227 [2023-11-06 22:29:15,779 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:29:15,780 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 85 treesize of output 61 [2023-11-06 22:29:15,816 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:29:15,817 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1404 treesize of output 1340 [2023-11-06 22:29:15,867 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:29:15,867 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 99 [2023-11-06 22:29:15,896 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 154 treesize of output 130 [2023-11-06 22:29:15,917 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 70 treesize of output 58 [2023-11-06 22:29:16,585 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:29:16,585 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 178 treesize of output 118 [2023-11-06 22:29:16,596 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:29:16,597 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:29:16,613 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-06 22:29:16,614 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 222 treesize of output 178 [2023-11-06 22:29:16,642 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-06 22:29:16,643 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 75 treesize of output 55 [2023-11-06 22:29:16,749 INFO L322 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-11-06 22:29:16,750 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 154 treesize of output 1 [2023-11-06 22:29:16,773 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:29:16,773 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 141 treesize of output 93 [2023-11-06 22:29:16,787 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:29:16,788 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:29:16,804 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-06 22:29:16,805 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 181 treesize of output 145 [2023-11-06 22:29:16,859 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-06 22:29:16,859 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 45 [2023-11-06 22:29:16,920 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:29:16,920 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 142 treesize of output 94 [2023-11-06 22:29:16,931 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:29:16,932 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:29:16,951 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-06 22:29:16,952 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 185 treesize of output 149 [2023-11-06 22:29:16,989 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-06 22:29:16,990 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 60 treesize of output 46 [2023-11-06 22:29:17,071 INFO L322 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-11-06 22:29:17,071 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 200 treesize of output 1 [2023-11-06 22:29:17,092 INFO L322 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-11-06 22:29:17,092 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 121 treesize of output 1 [2023-11-06 22:29:17,114 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:29:17,114 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 170 treesize of output 110 [2023-11-06 22:29:17,127 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:29:17,128 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:29:17,152 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-06 22:29:17,153 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 212 treesize of output 172 [2023-11-06 22:29:17,186 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-06 22:29:17,186 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 70 treesize of output 54 [2023-11-06 22:29:17,271 INFO L322 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-11-06 22:29:17,272 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 146 treesize of output 1 [2023-11-06 22:29:17,509 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:29:17,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2110929657] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:29:17,509 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:29:17,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 30 [2023-11-06 22:29:17,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452422426] [2023-11-06 22:29:17,510 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:29:17,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-11-06 22:29:17,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:29:17,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-11-06 22:29:17,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=676, Unknown=6, NotChecked=168, Total=992 [2023-11-06 22:29:17,757 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 469 [2023-11-06 22:29:17,766 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 32 transitions, 125 flow. Second operand has 32 states, 32 states have (on average 132.25) internal successors, (4232), 32 states have internal predecessors, (4232), 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) [2023-11-06 22:29:17,766 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:29:17,766 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 469 [2023-11-06 22:29:17,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:29:26,746 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-06 22:29:30,202 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-06 22:29:30,920 INFO L124 PetriNetUnfolderBase]: 1426/2084 cut-off events. [2023-11-06 22:29:30,920 INFO L125 PetriNetUnfolderBase]: For 1542/1542 co-relation queries the response was YES. [2023-11-06 22:29:30,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6274 conditions, 2084 events. 1426/2084 cut-off events. For 1542/1542 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 8785 event pairs, 38 based on Foata normal form. 1/1939 useless extension candidates. Maximal degree in co-relation 4285. Up to 1085 conditions per place. [2023-11-06 22:29:30,947 INFO L140 encePairwiseOnDemand]: 456/469 looper letters, 143 selfloop transitions, 49 changer transitions 1/193 dead transitions. [2023-11-06 22:29:30,948 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 193 transitions, 1066 flow [2023-11-06 22:29:30,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-06 22:29:30,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-11-06 22:29:30,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2663 transitions. [2023-11-06 22:29:30,968 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2988441252384693 [2023-11-06 22:29:30,969 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2663 transitions. [2023-11-06 22:29:30,969 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2663 transitions. [2023-11-06 22:29:30,972 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:29:30,973 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2663 transitions. [2023-11-06 22:29:30,986 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 140.1578947368421) internal successors, (2663), 19 states have internal predecessors, (2663), 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) [2023-11-06 22:29:31,012 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 469.0) internal successors, (9380), 20 states have internal predecessors, (9380), 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) [2023-11-06 22:29:31,017 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 469.0) internal successors, (9380), 20 states have internal predecessors, (9380), 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) [2023-11-06 22:29:31,017 INFO L175 Difference]: Start difference. First operand has 37 places, 32 transitions, 125 flow. Second operand 19 states and 2663 transitions. [2023-11-06 22:29:31,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 193 transitions, 1066 flow [2023-11-06 22:29:31,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 193 transitions, 1008 flow, removed 14 selfloop flow, removed 2 redundant places. [2023-11-06 22:29:31,030 INFO L231 Difference]: Finished difference. Result has 61 places, 75 transitions, 477 flow [2023-11-06 22:29:31,030 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=469, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=477, PETRI_PLACES=61, PETRI_TRANSITIONS=75} [2023-11-06 22:29:31,031 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 29 predicate places. [2023-11-06 22:29:31,032 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 75 transitions, 477 flow [2023-11-06 22:29:31,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 132.25) internal successors, (4232), 32 states have internal predecessors, (4232), 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) [2023-11-06 22:29:31,035 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:29:31,036 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] [2023-11-06 22:29:31,049 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40dcdcad-f565-4fa1-be46-a0138572c58d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 22:29:31,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40dcdcad-f565-4fa1-be46-a0138572c58d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:29:31,244 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)] === [2023-11-06 22:29:31,244 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:29:31,244 INFO L85 PathProgramCache]: Analyzing trace with hash -37888909, now seen corresponding path program 2 times [2023-11-06 22:29:31,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:29:31,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246401468] [2023-11-06 22:29:31,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:29:31,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:29:31,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:29:33,447 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:29:33,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:29:33,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246401468] [2023-11-06 22:29:33,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246401468] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:29:33,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [826305819] [2023-11-06 22:29:33,448 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:29:33,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:29:33,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40dcdcad-f565-4fa1-be46-a0138572c58d/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:29:33,452 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40dcdcad-f565-4fa1-be46-a0138572c58d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:29:33,480 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40dcdcad-f565-4fa1-be46-a0138572c58d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 22:29:33,622 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:29:33,622 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:29:33,625 INFO L262 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 42 conjunts are in the unsatisfiable core [2023-11-06 22:29:33,629 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:29:34,576 INFO L351 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 82 treesize of output 46 [2023-11-06 22:29:34,656 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:29:34,656 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:29:35,352 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:29:35,353 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 133 treesize of output 61 [2023-11-06 22:29:35,431 INFO L322 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-06 22:29:35,432 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 1 [2023-11-06 22:29:35,757 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:29:35,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [826305819] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:29:35,758 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:29:35,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 26 [2023-11-06 22:29:35,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429437577] [2023-11-06 22:29:35,758 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:29:35,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-11-06 22:29:35,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:29:35,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-11-06 22:29:35,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=625, Unknown=0, NotChecked=0, Total=756 [2023-11-06 22:29:39,881 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 469 [2023-11-06 22:29:39,888 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 75 transitions, 477 flow. Second operand has 28 states, 28 states have (on average 168.46428571428572) internal successors, (4717), 28 states have internal predecessors, (4717), 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) [2023-11-06 22:29:39,889 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:29:39,889 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 469 [2023-11-06 22:29:39,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:29:41,585 INFO L124 PetriNetUnfolderBase]: 1492/2177 cut-off events. [2023-11-06 22:29:41,585 INFO L125 PetriNetUnfolderBase]: For 4083/4095 co-relation queries the response was YES. [2023-11-06 22:29:41,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8265 conditions, 2177 events. 1492/2177 cut-off events. For 4083/4095 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 10051 event pairs, 262 based on Foata normal form. 13/2172 useless extension candidates. Maximal degree in co-relation 7018. Up to 1597 conditions per place. [2023-11-06 22:29:41,621 INFO L140 encePairwiseOnDemand]: 459/469 looper letters, 91 selfloop transitions, 46 changer transitions 1/141 dead transitions. [2023-11-06 22:29:41,621 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 141 transitions, 1085 flow [2023-11-06 22:29:41,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 22:29:41,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-06 22:29:41,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1754 transitions. [2023-11-06 22:29:41,632 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3739872068230277 [2023-11-06 22:29:41,632 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1754 transitions. [2023-11-06 22:29:41,632 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1754 transitions. [2023-11-06 22:29:41,634 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:29:41,634 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1754 transitions. [2023-11-06 22:29:41,641 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 175.4) internal successors, (1754), 10 states have internal predecessors, (1754), 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) [2023-11-06 22:29:41,652 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 469.0) internal successors, (5159), 11 states have internal predecessors, (5159), 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) [2023-11-06 22:29:41,655 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 469.0) internal successors, (5159), 11 states have internal predecessors, (5159), 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) [2023-11-06 22:29:41,656 INFO L175 Difference]: Start difference. First operand has 61 places, 75 transitions, 477 flow. Second operand 10 states and 1754 transitions. [2023-11-06 22:29:41,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 141 transitions, 1085 flow [2023-11-06 22:29:41,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 141 transitions, 1003 flow, removed 23 selfloop flow, removed 2 redundant places. [2023-11-06 22:29:41,691 INFO L231 Difference]: Finished difference. Result has 73 places, 96 transitions, 718 flow [2023-11-06 22:29:41,692 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=469, PETRI_DIFFERENCE_MINUEND_FLOW=417, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=718, PETRI_PLACES=73, PETRI_TRANSITIONS=96} [2023-11-06 22:29:41,698 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 41 predicate places. [2023-11-06 22:29:41,698 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 96 transitions, 718 flow [2023-11-06 22:29:41,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 168.46428571428572) internal successors, (4717), 28 states have internal predecessors, (4717), 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) [2023-11-06 22:29:41,701 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:29:41,701 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] [2023-11-06 22:29:41,715 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40dcdcad-f565-4fa1-be46-a0138572c58d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 22:29:41,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40dcdcad-f565-4fa1-be46-a0138572c58d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:29:41,910 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)] === [2023-11-06 22:29:41,911 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:29:41,911 INFO L85 PathProgramCache]: Analyzing trace with hash -1101040925, now seen corresponding path program 3 times [2023-11-06 22:29:41,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:29:41,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883110027] [2023-11-06 22:29:41,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:29:41,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:29:41,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:29:43,454 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:29:43,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:29:43,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883110027] [2023-11-06 22:29:43,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883110027] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:29:43,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1477766762] [2023-11-06 22:29:43,455 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-06 22:29:43,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:29:43,455 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40dcdcad-f565-4fa1-be46-a0138572c58d/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:29:43,457 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40dcdcad-f565-4fa1-be46-a0138572c58d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:29:43,499 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40dcdcad-f565-4fa1-be46-a0138572c58d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 22:29:43,637 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-06 22:29:43,638 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:29:43,641 INFO L262 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 47 conjunts are in the unsatisfiable core [2023-11-06 22:29:43,645 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:29:44,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:29:44,223 INFO L351 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 16 treesize of output 11 [2023-11-06 22:29:44,551 INFO L351 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 88 treesize of output 52 [2023-11-06 22:29:44,730 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:29:44,730 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:29:46,628 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:29:46,629 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 166 treesize of output 126 [2023-11-06 22:29:46,639 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 109 treesize of output 97 [2023-11-06 22:29:46,648 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 97 treesize of output 85 [2023-11-06 22:29:46,754 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:29:46,763 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-06 22:29:46,764 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 29 [2023-11-06 22:29:46,776 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:29:46,786 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-06 22:29:46,786 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 85 treesize of output 41 [2023-11-06 22:29:46,809 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:29:46,820 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-06 22:29:46,820 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 42 [2023-11-06 22:29:47,240 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:29:47,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1477766762] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:29:47,240 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:29:47,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 28 [2023-11-06 22:29:47,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907416070] [2023-11-06 22:29:47,241 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:29:47,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-11-06 22:29:47,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:29:47,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-11-06 22:29:47,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=738, Unknown=3, NotChecked=0, Total=870 [2023-11-06 22:29:51,290 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 469 [2023-11-06 22:29:51,294 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 96 transitions, 718 flow. Second operand has 30 states, 30 states have (on average 138.4) internal successors, (4152), 30 states have internal predecessors, (4152), 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) [2023-11-06 22:29:51,295 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:29:51,295 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 469 [2023-11-06 22:29:51,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:29:54,591 INFO L124 PetriNetUnfolderBase]: 2093/3042 cut-off events. [2023-11-06 22:29:54,591 INFO L125 PetriNetUnfolderBase]: For 6678/6678 co-relation queries the response was YES. [2023-11-06 22:29:54,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12786 conditions, 3042 events. 2093/3042 cut-off events. For 6678/6678 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 13354 event pairs, 217 based on Foata normal form. 19/3061 useless extension candidates. Maximal degree in co-relation 11044. Up to 2213 conditions per place. [2023-11-06 22:29:54,637 INFO L140 encePairwiseOnDemand]: 455/469 looper letters, 134 selfloop transitions, 102 changer transitions 1/237 dead transitions. [2023-11-06 22:29:54,638 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 237 transitions, 2019 flow [2023-11-06 22:29:54,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-06 22:29:54,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-11-06 22:29:54,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 3036 transitions. [2023-11-06 22:29:54,653 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30825464514163875 [2023-11-06 22:29:54,654 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 3036 transitions. [2023-11-06 22:29:54,654 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 3036 transitions. [2023-11-06 22:29:54,657 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:29:54,658 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 3036 transitions. [2023-11-06 22:29:54,669 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 144.57142857142858) internal successors, (3036), 21 states have internal predecessors, (3036), 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) [2023-11-06 22:29:54,689 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 469.0) internal successors, (10318), 22 states have internal predecessors, (10318), 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) [2023-11-06 22:29:54,694 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 469.0) internal successors, (10318), 22 states have internal predecessors, (10318), 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) [2023-11-06 22:29:54,694 INFO L175 Difference]: Start difference. First operand has 73 places, 96 transitions, 718 flow. Second operand 21 states and 3036 transitions. [2023-11-06 22:29:54,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 237 transitions, 2019 flow [2023-11-06 22:29:54,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 237 transitions, 1926 flow, removed 11 selfloop flow, removed 3 redundant places. [2023-11-06 22:29:54,758 INFO L231 Difference]: Finished difference. Result has 100 places, 151 transitions, 1472 flow [2023-11-06 22:29:54,758 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=469, PETRI_DIFFERENCE_MINUEND_FLOW=670, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1472, PETRI_PLACES=100, PETRI_TRANSITIONS=151} [2023-11-06 22:29:54,759 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 68 predicate places. [2023-11-06 22:29:54,759 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 151 transitions, 1472 flow [2023-11-06 22:29:54,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 138.4) internal successors, (4152), 30 states have internal predecessors, (4152), 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) [2023-11-06 22:29:54,762 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:29:54,771 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] [2023-11-06 22:29:54,783 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40dcdcad-f565-4fa1-be46-a0138572c58d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 22:29:54,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40dcdcad-f565-4fa1-be46-a0138572c58d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:29:54,972 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)] === [2023-11-06 22:29:54,973 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:29:54,973 INFO L85 PathProgramCache]: Analyzing trace with hash 142098187, now seen corresponding path program 4 times [2023-11-06 22:29:54,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:29:54,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330450042] [2023-11-06 22:29:54,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:29:54,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:29:55,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:29:56,191 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:29:56,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:29:56,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330450042] [2023-11-06 22:29:56,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330450042] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:29:56,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [455612514] [2023-11-06 22:29:56,192 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-06 22:29:56,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:29:56,193 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40dcdcad-f565-4fa1-be46-a0138572c58d/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:29:56,196 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40dcdcad-f565-4fa1-be46-a0138572c58d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:29:56,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40dcdcad-f565-4fa1-be46-a0138572c58d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 22:29:56,371 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-06 22:29:56,371 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:29:56,374 INFO L262 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 40 conjunts are in the unsatisfiable core [2023-11-06 22:29:56,378 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:29:57,019 INFO L351 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 88 treesize of output 52 [2023-11-06 22:29:57,177 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:29:57,178 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:29:57,993 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:29:57,993 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 128 treesize of output 64 [2023-11-06 22:29:58,077 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-06 22:29:58,078 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 114 treesize of output 54 [2023-11-06 22:29:58,446 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:29:58,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [455612514] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:29:58,446 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:29:58,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 26 [2023-11-06 22:29:58,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87358958] [2023-11-06 22:29:58,447 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:29:58,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-11-06 22:29:58,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:29:58,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-11-06 22:29:58,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=607, Unknown=0, NotChecked=0, Total=756 [2023-11-06 22:30:01,163 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 469 [2023-11-06 22:30:01,168 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 151 transitions, 1472 flow. Second operand has 28 states, 28 states have (on average 175.57142857142858) internal successors, (4916), 28 states have internal predecessors, (4916), 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) [2023-11-06 22:30:01,168 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:30:01,168 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 469 [2023-11-06 22:30:01,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:30:03,799 INFO L124 PetriNetUnfolderBase]: 2682/3890 cut-off events. [2023-11-06 22:30:03,800 INFO L125 PetriNetUnfolderBase]: For 20438/20438 co-relation queries the response was YES. [2023-11-06 22:30:03,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19612 conditions, 3890 events. 2682/3890 cut-off events. For 20438/20438 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 18074 event pairs, 321 based on Foata normal form. 1/3891 useless extension candidates. Maximal degree in co-relation 17983. Up to 2618 conditions per place. [2023-11-06 22:30:03,878 INFO L140 encePairwiseOnDemand]: 456/469 looper letters, 149 selfloop transitions, 178 changer transitions 1/328 dead transitions. [2023-11-06 22:30:03,878 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 328 transitions, 3525 flow [2023-11-06 22:30:03,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-06 22:30:03,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-11-06 22:30:03,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 4337 transitions. [2023-11-06 22:30:03,898 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3853056147832267 [2023-11-06 22:30:03,898 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 4337 transitions. [2023-11-06 22:30:03,898 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 4337 transitions. [2023-11-06 22:30:03,902 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:30:03,902 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 4337 transitions. [2023-11-06 22:30:03,915 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 180.70833333333334) internal successors, (4337), 24 states have internal predecessors, (4337), 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) [2023-11-06 22:30:03,935 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 469.0) internal successors, (11725), 25 states have internal predecessors, (11725), 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) [2023-11-06 22:30:03,938 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 469.0) internal successors, (11725), 25 states have internal predecessors, (11725), 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) [2023-11-06 22:30:03,938 INFO L175 Difference]: Start difference. First operand has 100 places, 151 transitions, 1472 flow. Second operand 24 states and 4337 transitions. [2023-11-06 22:30:03,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 328 transitions, 3525 flow [2023-11-06 22:30:04,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 328 transitions, 3405 flow, removed 48 selfloop flow, removed 5 redundant places. [2023-11-06 22:30:04,024 INFO L231 Difference]: Finished difference. Result has 131 places, 244 transitions, 3107 flow [2023-11-06 22:30:04,025 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=469, PETRI_DIFFERENCE_MINUEND_FLOW=1401, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=3107, PETRI_PLACES=131, PETRI_TRANSITIONS=244} [2023-11-06 22:30:04,026 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 99 predicate places. [2023-11-06 22:30:04,026 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 244 transitions, 3107 flow [2023-11-06 22:30:04,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 175.57142857142858) internal successors, (4916), 28 states have internal predecessors, (4916), 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) [2023-11-06 22:30:04,027 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:30:04,028 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] [2023-11-06 22:30:04,039 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40dcdcad-f565-4fa1-be46-a0138572c58d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-06 22:30:04,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40dcdcad-f565-4fa1-be46-a0138572c58d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-06 22:30:04,236 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)] === [2023-11-06 22:30:04,236 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:30:04,236 INFO L85 PathProgramCache]: Analyzing trace with hash 772391453, now seen corresponding path program 5 times [2023-11-06 22:30:04,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:30:04,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811910588] [2023-11-06 22:30:04,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:30:04,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:30:04,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:30:05,369 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:30:05,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:30:05,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811910588] [2023-11-06 22:30:05,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811910588] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:30:05,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [209734220] [2023-11-06 22:30:05,370 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-06 22:30:05,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:30:05,370 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40dcdcad-f565-4fa1-be46-a0138572c58d/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:30:05,372 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40dcdcad-f565-4fa1-be46-a0138572c58d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:30:05,391 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40dcdcad-f565-4fa1-be46-a0138572c58d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-06 22:30:05,541 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:30:05,541 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:30:05,544 INFO L262 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 46 conjunts are in the unsatisfiable core [2023-11-06 22:30:05,549 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:30:06,419 INFO L351 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 82 treesize of output 46 [2023-11-06 22:30:06,740 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:30:06,740 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:30:08,315 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:30:08,316 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 371 treesize of output 347 [2023-11-06 22:31:14,365 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts.