./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-more-min-le-max.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a84637-d6a5-42fd-9b90-f968cb9e1eb1/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a84637-d6a5-42fd-9b90-f968cb9e1eb1/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a84637-d6a5-42fd-9b90-f968cb9e1eb1/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a84637-d6a5-42fd-9b90-f968cb9e1eb1/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-min-le-max.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a84637-d6a5-42fd-9b90-f968cb9e1eb1/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a84637-d6a5-42fd-9b90-f968cb9e1eb1/bin/uautomizer-verify-uTZkv6EMXl --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash dbd0a32f8466e9a1ac86b6dfec2b7453fe6f40d8d953742d93d3d05c5ad7b7af --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:17:03,788 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:17:03,902 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a84637-d6a5-42fd-9b90-f968cb9e1eb1/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-12 02:17:03,915 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:17:03,916 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:17:03,957 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:17:03,958 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:17:03,958 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:17:03,959 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:17:03,967 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:17:03,968 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:17:03,969 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:17:03,969 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:17:03,971 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:17:03,972 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:17:03,972 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:17:03,973 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:17:03,973 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:17:03,974 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:17:03,974 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:17:03,974 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:17:03,975 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:17:03,975 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:17:03,976 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:17:03,976 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:17:03,977 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:17:03,978 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:17:03,978 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:17:03,979 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:17:03,979 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:17:03,981 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:17:03,981 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:17:03,981 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:17:03,981 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:17:03,982 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:17:03,982 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:17:03,982 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:17:03,982 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:17:03,983 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:17:03,983 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_09a84637-d6a5-42fd-9b90-f968cb9e1eb1/bin/uautomizer-verify-uTZkv6EMXl/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a84637-d6a5-42fd-9b90-f968cb9e1eb1/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dbd0a32f8466e9a1ac86b6dfec2b7453fe6f40d8d953742d93d3d05c5ad7b7af [2023-11-12 02:17:04,360 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:17:04,391 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:17:04,394 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:17:04,395 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:17:04,396 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:17:04,397 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a84637-d6a5-42fd-9b90-f968cb9e1eb1/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/weaver/popl20-more-min-le-max.wvr.c [2023-11-12 02:17:07,664 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:17:07,916 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:17:07,916 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a84637-d6a5-42fd-9b90-f968cb9e1eb1/sv-benchmarks/c/weaver/popl20-more-min-le-max.wvr.c [2023-11-12 02:17:07,930 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a84637-d6a5-42fd-9b90-f968cb9e1eb1/bin/uautomizer-verify-uTZkv6EMXl/data/a4a3bc62e/3fa72b72205d4307af308aa6288b14e3/FLAGa16c7e06a [2023-11-12 02:17:07,958 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a84637-d6a5-42fd-9b90-f968cb9e1eb1/bin/uautomizer-verify-uTZkv6EMXl/data/a4a3bc62e/3fa72b72205d4307af308aa6288b14e3 [2023-11-12 02:17:07,970 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:17:07,972 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:17:07,973 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:17:07,974 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:17:07,983 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:17:07,983 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:17:07" (1/1) ... [2023-11-12 02:17:07,984 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@142d66e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:17:07, skipping insertion in model container [2023-11-12 02:17:07,985 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:17:07" (1/1) ... [2023-11-12 02:17:08,012 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:17:08,179 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_09a84637-d6a5-42fd-9b90-f968cb9e1eb1/sv-benchmarks/c/weaver/popl20-more-min-le-max.wvr.c[2525,2538] [2023-11-12 02:17:08,187 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:17:08,197 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:17:08,219 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_09a84637-d6a5-42fd-9b90-f968cb9e1eb1/sv-benchmarks/c/weaver/popl20-more-min-le-max.wvr.c[2525,2538] [2023-11-12 02:17:08,222 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:17:08,230 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:17:08,231 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:17:08,238 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:17:08,239 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:17:08 WrapperNode [2023-11-12 02:17:08,239 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:17:08,240 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:17:08,240 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:17:08,240 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:17:08,248 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:17:08" (1/1) ... [2023-11-12 02:17:08,256 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:17:08" (1/1) ... [2023-11-12 02:17:08,280 INFO L138 Inliner]: procedures = 24, calls = 43, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 106 [2023-11-12 02:17:08,280 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:17:08,281 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:17:08,281 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:17:08,281 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:17:08,292 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:17:08" (1/1) ... [2023-11-12 02:17:08,292 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:17:08" (1/1) ... [2023-11-12 02:17:08,295 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:17:08" (1/1) ... [2023-11-12 02:17:08,296 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:17:08" (1/1) ... [2023-11-12 02:17:08,305 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:17:08" (1/1) ... [2023-11-12 02:17:08,309 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:17:08" (1/1) ... [2023-11-12 02:17:08,311 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:17:08" (1/1) ... [2023-11-12 02:17:08,312 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:17:08" (1/1) ... [2023-11-12 02:17:08,315 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:17:08,316 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:17:08,316 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:17:08,316 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:17:08,317 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:17:08" (1/1) ... [2023-11-12 02:17:08,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:17:08,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a84637-d6a5-42fd-9b90-f968cb9e1eb1/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:17:08,354 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a84637-d6a5-42fd-9b90-f968cb9e1eb1/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:17:08,364 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a84637-d6a5-42fd-9b90-f968cb9e1eb1/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:17:08,397 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:17:08,397 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-12 02:17:08,398 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-12 02:17:08,398 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-12 02:17:08,398 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-12 02:17:08,398 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-12 02:17:08,398 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-12 02:17:08,399 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:17:08,399 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 02:17:08,399 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 02:17:08,399 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-12 02:17:08,399 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-12 02:17:08,400 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-12 02:17:08,400 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:17:08,400 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:17:08,400 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 02:17:08,400 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 02:17:08,402 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-12 02:17:08,504 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:17:08,506 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:17:08,778 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:17:08,839 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:17:08,839 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-12 02:17:08,842 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:17:08 BoogieIcfgContainer [2023-11-12 02:17:08,843 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:17:08,845 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:17:08,846 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:17:08,849 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:17:08,849 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:17:07" (1/3) ... [2023-11-12 02:17:08,850 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13ece0bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:17:08, skipping insertion in model container [2023-11-12 02:17:08,851 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:17:08" (2/3) ... [2023-11-12 02:17:08,851 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13ece0bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:17:08, skipping insertion in model container [2023-11-12 02:17:08,851 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:17:08" (3/3) ... [2023-11-12 02:17:08,853 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-min-le-max.wvr.c [2023-11-12 02:17:08,862 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-12 02:17:08,879 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:17:08,879 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 02:17:08,880 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-12 02:17:09,030 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-12 02:17:09,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 153 places, 153 transitions, 327 flow [2023-11-12 02:17:09,199 INFO L124 PetriNetUnfolderBase]: 10/150 cut-off events. [2023-11-12 02:17:09,199 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-12 02:17:09,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 163 conditions, 150 events. 10/150 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 91 event pairs, 0 based on Foata normal form. 0/139 useless extension candidates. Maximal degree in co-relation 118. Up to 2 conditions per place. [2023-11-12 02:17:09,206 INFO L82 GeneralOperation]: Start removeDead. Operand has 153 places, 153 transitions, 327 flow [2023-11-12 02:17:09,211 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 139 places, 139 transitions, 296 flow [2023-11-12 02:17:09,215 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-12 02:17:09,226 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 139 places, 139 transitions, 296 flow [2023-11-12 02:17:09,229 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 139 places, 139 transitions, 296 flow [2023-11-12 02:17:09,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 139 places, 139 transitions, 296 flow [2023-11-12 02:17:09,270 INFO L124 PetriNetUnfolderBase]: 10/139 cut-off events. [2023-11-12 02:17:09,270 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-12 02:17:09,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152 conditions, 139 events. 10/139 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 90 event pairs, 0 based on Foata normal form. 0/129 useless extension candidates. Maximal degree in co-relation 118. Up to 2 conditions per place. [2023-11-12 02:17:09,274 INFO L119 LiptonReduction]: Number of co-enabled transitions 1200 [2023-11-12 02:17:15,503 INFO L134 LiptonReduction]: Checked pairs total: 1359 [2023-11-12 02:17:15,503 INFO L136 LiptonReduction]: Total number of compositions: 136 [2023-11-12 02:17:15,518 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:17:15,523 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@55b599f5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:17:15,524 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-12 02:17:15,530 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-12 02:17:15,530 INFO L124 PetriNetUnfolderBase]: 3/21 cut-off events. [2023-11-12 02:17:15,531 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-12 02:17:15,531 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:17:15,531 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:17:15,532 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)] === [2023-11-12 02:17:15,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:17:15,541 INFO L85 PathProgramCache]: Analyzing trace with hash -594819377, now seen corresponding path program 1 times [2023-11-12 02:17:15,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:17:15,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106743744] [2023-11-12 02:17:15,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:17:15,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:17:15,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:16,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:17:16,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:17:16,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106743744] [2023-11-12 02:17:16,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106743744] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:17:16,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:17:16,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:17:16,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318530785] [2023-11-12 02:17:16,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:17:16,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:17:16,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:17:16,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:17:16,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:17:16,131 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 289 [2023-11-12 02:17:16,137 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 22 transitions, 62 flow. Second operand has 4 states, 4 states have (on average 135.75) internal successors, (543), 4 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:16,138 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:17:16,138 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 289 [2023-11-12 02:17:16,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:17:16,307 INFO L124 PetriNetUnfolderBase]: 178/280 cut-off events. [2023-11-12 02:17:16,308 INFO L125 PetriNetUnfolderBase]: For 22/22 co-relation queries the response was YES. [2023-11-12 02:17:16,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 608 conditions, 280 events. 178/280 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 750 event pairs, 93 based on Foata normal form. 0/231 useless extension candidates. Maximal degree in co-relation 486. Up to 214 conditions per place. [2023-11-12 02:17:16,313 INFO L140 encePairwiseOnDemand]: 285/289 looper letters, 29 selfloop transitions, 3 changer transitions 0/32 dead transitions. [2023-11-12 02:17:16,313 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 32 transitions, 152 flow [2023-11-12 02:17:16,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:17:16,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-12 02:17:16,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 557 transitions. [2023-11-12 02:17:16,333 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4818339100346021 [2023-11-12 02:17:16,334 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 557 transitions. [2023-11-12 02:17:16,334 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 557 transitions. [2023-11-12 02:17:16,337 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:17:16,340 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 557 transitions. [2023-11-12 02:17:16,344 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 139.25) internal successors, (557), 4 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:16,351 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 289.0) internal successors, (1445), 5 states have internal predecessors, (1445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:16,352 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 289.0) internal successors, (1445), 5 states have internal predecessors, (1445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:16,354 INFO L175 Difference]: Start difference. First operand has 29 places, 22 transitions, 62 flow. Second operand 4 states and 557 transitions. [2023-11-12 02:17:16,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 32 transitions, 152 flow [2023-11-12 02:17:16,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 32 transitions, 136 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-12 02:17:16,360 INFO L231 Difference]: Finished difference. Result has 27 places, 23 transitions, 64 flow [2023-11-12 02:17:16,362 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=289, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=64, PETRI_PLACES=27, PETRI_TRANSITIONS=23} [2023-11-12 02:17:16,365 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, -2 predicate places. [2023-11-12 02:17:16,366 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 23 transitions, 64 flow [2023-11-12 02:17:16,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 135.75) internal successors, (543), 4 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:16,367 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:17:16,367 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:17:16,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 02:17:16,367 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)] === [2023-11-12 02:17:16,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:17:16,368 INFO L85 PathProgramCache]: Analyzing trace with hash 1515766338, now seen corresponding path program 1 times [2023-11-12 02:17:16,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:17:16,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686493927] [2023-11-12 02:17:16,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:17:16,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:17:16,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:16,498 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-12 02:17:16,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:17:16,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686493927] [2023-11-12 02:17:16,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686493927] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:17:16,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:17:16,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:17:16,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965993381] [2023-11-12 02:17:16,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:17:16,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:17:16,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:17:16,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:17:16,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:17:16,538 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 289 [2023-11-12 02:17:16,539 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 23 transitions, 64 flow. Second operand has 4 states, 4 states have (on average 136.0) internal successors, (544), 4 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:16,539 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:17:16,540 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 289 [2023-11-12 02:17:16,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:17:16,643 INFO L124 PetriNetUnfolderBase]: 228/356 cut-off events. [2023-11-12 02:17:16,644 INFO L125 PetriNetUnfolderBase]: For 127/127 co-relation queries the response was YES. [2023-11-12 02:17:16,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 878 conditions, 356 events. 228/356 cut-off events. For 127/127 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1022 event pairs, 129 based on Foata normal form. 0/302 useless extension candidates. Maximal degree in co-relation 158. Up to 278 conditions per place. [2023-11-12 02:17:16,648 INFO L140 encePairwiseOnDemand]: 285/289 looper letters, 31 selfloop transitions, 3 changer transitions 0/34 dead transitions. [2023-11-12 02:17:16,648 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 34 transitions, 166 flow [2023-11-12 02:17:16,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:17:16,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-12 02:17:16,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 557 transitions. [2023-11-12 02:17:16,652 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4818339100346021 [2023-11-12 02:17:16,652 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 557 transitions. [2023-11-12 02:17:16,652 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 557 transitions. [2023-11-12 02:17:16,653 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:17:16,653 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 557 transitions. [2023-11-12 02:17:16,655 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 139.25) internal successors, (557), 4 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:16,659 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 289.0) internal successors, (1445), 5 states have internal predecessors, (1445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:16,660 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 289.0) internal successors, (1445), 5 states have internal predecessors, (1445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:16,660 INFO L175 Difference]: Start difference. First operand has 27 places, 23 transitions, 64 flow. Second operand 4 states and 557 transitions. [2023-11-12 02:17:16,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 34 transitions, 166 flow [2023-11-12 02:17:16,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 34 transitions, 156 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-11-12 02:17:16,662 INFO L231 Difference]: Finished difference. Result has 29 places, 24 transitions, 72 flow [2023-11-12 02:17:16,662 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=289, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=72, PETRI_PLACES=29, PETRI_TRANSITIONS=24} [2023-11-12 02:17:16,663 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 0 predicate places. [2023-11-12 02:17:16,664 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 24 transitions, 72 flow [2023-11-12 02:17:16,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 136.0) internal successors, (544), 4 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:16,664 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:17:16,665 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] [2023-11-12 02:17:16,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 02:17:16,665 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)] === [2023-11-12 02:17:16,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:17:16,666 INFO L85 PathProgramCache]: Analyzing trace with hash 1914251292, now seen corresponding path program 1 times [2023-11-12 02:17:16,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:17:16,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143591966] [2023-11-12 02:17:16,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:17:16,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:17:16,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:16,896 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-12 02:17:16,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:17:16,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143591966] [2023-11-12 02:17:16,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143591966] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:17:16,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:17:16,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:17:16,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004263716] [2023-11-12 02:17:16,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:17:16,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:17:16,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:17:16,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:17:16,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:17:16,939 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 289 [2023-11-12 02:17:16,940 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 24 transitions, 72 flow. Second operand has 3 states, 3 states have (on average 137.0) internal successors, (411), 3 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:16,940 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:17:16,940 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 289 [2023-11-12 02:17:16,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:17:17,028 INFO L124 PetriNetUnfolderBase]: 228/357 cut-off events. [2023-11-12 02:17:17,029 INFO L125 PetriNetUnfolderBase]: For 170/170 co-relation queries the response was YES. [2023-11-12 02:17:17,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 955 conditions, 357 events. 228/357 cut-off events. For 170/170 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 959 event pairs, 173 based on Foata normal form. 1/304 useless extension candidates. Maximal degree in co-relation 500. Up to 357 conditions per place. [2023-11-12 02:17:17,035 INFO L140 encePairwiseOnDemand]: 286/289 looper letters, 23 selfloop transitions, 2 changer transitions 0/25 dead transitions. [2023-11-12 02:17:17,035 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 25 transitions, 124 flow [2023-11-12 02:17:17,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:17:17,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:17:17,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 414 transitions. [2023-11-12 02:17:17,038 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47750865051903113 [2023-11-12 02:17:17,038 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 414 transitions. [2023-11-12 02:17:17,039 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 414 transitions. [2023-11-12 02:17:17,039 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:17:17,039 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 414 transitions. [2023-11-12 02:17:17,041 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:17,043 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 289.0) internal successors, (1156), 4 states have internal predecessors, (1156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:17,045 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 289.0) internal successors, (1156), 4 states have internal predecessors, (1156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:17,045 INFO L175 Difference]: Start difference. First operand has 29 places, 24 transitions, 72 flow. Second operand 3 states and 414 transitions. [2023-11-12 02:17:17,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 25 transitions, 124 flow [2023-11-12 02:17:17,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 25 transitions, 118 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-12 02:17:17,048 INFO L231 Difference]: Finished difference. Result has 30 places, 25 transitions, 78 flow [2023-11-12 02:17:17,048 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=289, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=78, PETRI_PLACES=30, PETRI_TRANSITIONS=25} [2023-11-12 02:17:17,050 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 1 predicate places. [2023-11-12 02:17:17,053 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 25 transitions, 78 flow [2023-11-12 02:17:17,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 137.0) internal successors, (411), 3 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:17,055 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:17:17,055 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] [2023-11-12 02:17:17,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 02:17:17,056 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)] === [2023-11-12 02:17:17,056 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:17:17,056 INFO L85 PathProgramCache]: Analyzing trace with hash 1032994705, now seen corresponding path program 1 times [2023-11-12 02:17:17,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:17:17,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817168388] [2023-11-12 02:17:17,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:17:17,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:17:17,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:17,669 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-12 02:17:17,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:17:17,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817168388] [2023-11-12 02:17:17,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817168388] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:17:17,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [641789729] [2023-11-12 02:17:17,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:17:17,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:17:17,670 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a84637-d6a5-42fd-9b90-f968cb9e1eb1/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:17:17,676 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a84637-d6a5-42fd-9b90-f968cb9e1eb1/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:17:17,716 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a84637-d6a5-42fd-9b90-f968cb9e1eb1/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 02:17:17,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:17,841 INFO L262 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 33 conjunts are in the unsatisfiable core [2023-11-12 02:17:17,848 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:17:17,985 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 [2023-11-12 02:17:18,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:17:18,059 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 23 treesize of output 16 [2023-11-12 02:17:18,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:17:18,180 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 23 treesize of output 16 [2023-11-12 02:17:18,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:17:18,356 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 23 treesize of output 16 [2023-11-12 02:17:18,393 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 15 treesize of output 7 [2023-11-12 02:17:18,433 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:17:18,433 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:17:19,685 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-12 02:17:19,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [641789729] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-12 02:17:19,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-12 02:17:19,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [4, 10] total 20 [2023-11-12 02:17:19,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304261822] [2023-11-12 02:17:19,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:17:19,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-12 02:17:19,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:17:19,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-12 02:17:19,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=302, Unknown=12, NotChecked=0, Total=420 [2023-11-12 02:17:20,668 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 289 [2023-11-12 02:17:20,670 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 25 transitions, 78 flow. Second operand has 10 states, 10 states have (on average 99.2) internal successors, (992), 10 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:20,670 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:17:20,670 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 289 [2023-11-12 02:17:20,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:17:20,819 INFO L124 PetriNetUnfolderBase]: 228/356 cut-off events. [2023-11-12 02:17:20,819 INFO L125 PetriNetUnfolderBase]: For 99/99 co-relation queries the response was YES. [2023-11-12 02:17:20,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 906 conditions, 356 events. 228/356 cut-off events. For 99/99 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1012 event pairs, 93 based on Foata normal form. 1/302 useless extension candidates. Maximal degree in co-relation 893. Up to 215 conditions per place. [2023-11-12 02:17:20,823 INFO L140 encePairwiseOnDemand]: 286/289 looper letters, 0 selfloop transitions, 0 changer transitions 37/37 dead transitions. [2023-11-12 02:17:20,823 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 37 transitions, 190 flow [2023-11-12 02:17:20,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:17:20,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-12 02:17:20,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 421 transitions. [2023-11-12 02:17:20,862 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36418685121107264 [2023-11-12 02:17:20,862 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 421 transitions. [2023-11-12 02:17:20,863 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 421 transitions. [2023-11-12 02:17:20,863 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:17:20,863 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 421 transitions. [2023-11-12 02:17:20,865 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 105.25) internal successors, (421), 4 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:20,870 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 289.0) internal successors, (1445), 5 states have internal predecessors, (1445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:20,872 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 289.0) internal successors, (1445), 5 states have internal predecessors, (1445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:20,873 INFO L175 Difference]: Start difference. First operand has 30 places, 25 transitions, 78 flow. Second operand 4 states and 421 transitions. [2023-11-12 02:17:20,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 37 transitions, 190 flow [2023-11-12 02:17:20,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 37 transitions, 186 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-12 02:17:20,875 INFO L231 Difference]: Finished difference. Result has 31 places, 0 transitions, 0 flow [2023-11-12 02:17:20,875 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=289, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=31, PETRI_TRANSITIONS=0} [2023-11-12 02:17:20,877 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 2 predicate places. [2023-11-12 02:17:20,877 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 0 transitions, 0 flow [2023-11-12 02:17:20,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 99.2) internal successors, (992), 10 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:20,887 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-11-12 02:17:20,887 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-11-12 02:17:20,888 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-11-12 02:17:20,888 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-11-12 02:17:20,899 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a84637-d6a5-42fd-9b90-f968cb9e1eb1/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-12 02:17:21,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a84637-d6a5-42fd-9b90-f968cb9e1eb1/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:17:21,094 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-11-12 02:17:21,098 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-12 02:17:21,099 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-11-12 02:17:21,109 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 02:17:21 BasicIcfg [2023-11-12 02:17:21,109 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-12 02:17:21,110 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-12 02:17:21,110 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-12 02:17:21,110 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-12 02:17:21,110 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:17:08" (3/4) ... [2023-11-12 02:17:21,113 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-12 02:17:21,116 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-11-12 02:17:21,117 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-11-12 02:17:21,117 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2023-11-12 02:17:21,126 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 22 nodes and edges [2023-11-12 02:17:21,126 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-12 02:17:21,126 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-12 02:17:21,127 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-12 02:17:21,236 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a84637-d6a5-42fd-9b90-f968cb9e1eb1/bin/uautomizer-verify-uTZkv6EMXl/witness.graphml [2023-11-12 02:17:21,237 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a84637-d6a5-42fd-9b90-f968cb9e1eb1/bin/uautomizer-verify-uTZkv6EMXl/witness.yml [2023-11-12 02:17:21,237 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-12 02:17:21,237 INFO L158 Benchmark]: Toolchain (without parser) took 13265.82ms. Allocated memory was 144.7MB in the beginning and 262.1MB in the end (delta: 117.4MB). Free memory was 117.6MB in the beginning and 218.2MB in the end (delta: -100.6MB). Peak memory consumption was 16.5MB. Max. memory is 16.1GB. [2023-11-12 02:17:21,238 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 117.4MB. Free memory is still 83.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 02:17:21,238 INFO L158 Benchmark]: CACSL2BoogieTranslator took 265.79ms. Allocated memory is still 144.7MB. Free memory was 117.6MB in the beginning and 105.5MB in the end (delta: 12.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-12 02:17:21,238 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.35ms. Allocated memory is still 144.7MB. Free memory was 105.5MB in the beginning and 104.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-12 02:17:21,239 INFO L158 Benchmark]: Boogie Preprocessor took 34.55ms. Allocated memory is still 144.7MB. Free memory was 104.1MB in the beginning and 102.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-12 02:17:21,239 INFO L158 Benchmark]: RCFGBuilder took 526.63ms. Allocated memory is still 144.7MB. Free memory was 102.0MB in the beginning and 82.5MB in the end (delta: 19.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-12 02:17:21,240 INFO L158 Benchmark]: TraceAbstraction took 12263.92ms. Allocated memory was 144.7MB in the beginning and 262.1MB in the end (delta: 117.4MB). Free memory was 81.8MB in the beginning and 223.4MB in the end (delta: -141.6MB). Peak memory consumption was 124.7MB. Max. memory is 16.1GB. [2023-11-12 02:17:21,240 INFO L158 Benchmark]: Witness Printer took 127.08ms. Allocated memory is still 262.1MB. Free memory was 223.4MB in the beginning and 218.2MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-12 02:17:21,243 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 117.4MB. Free memory is still 83.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 265.79ms. Allocated memory is still 144.7MB. Free memory was 117.6MB in the beginning and 105.5MB in the end (delta: 12.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 40.35ms. Allocated memory is still 144.7MB. Free memory was 105.5MB in the beginning and 104.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 34.55ms. Allocated memory is still 144.7MB. Free memory was 104.1MB in the beginning and 102.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 526.63ms. Allocated memory is still 144.7MB. Free memory was 102.0MB in the beginning and 82.5MB in the end (delta: 19.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 12263.92ms. Allocated memory was 144.7MB in the beginning and 262.1MB in the end (delta: 117.4MB). Free memory was 81.8MB in the beginning and 223.4MB in the end (delta: -141.6MB). Peak memory consumption was 124.7MB. Max. memory is 16.1GB. * Witness Printer took 127.08ms. Allocated memory is still 262.1MB. Free memory was 223.4MB in the beginning and 218.2MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 6.3s, 139 PlacesBefore, 29 PlacesAfterwards, 139 TransitionsBefore, 22 TransitionsAfterwards, 1200 CoEnabledTransitionPairs, 7 FixpointIterations, 81 TrivialSequentialCompositions, 29 ConcurrentSequentialCompositions, 15 TrivialYvCompositions, 4 ConcurrentYvCompositions, 7 ChoiceCompositions, 136 TotalNumberOfCompositions, 1359 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1216, independent: 1190, independent conditional: 0, independent unconditional: 1190, dependent: 26, dependent conditional: 0, dependent unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 625, independent: 613, independent conditional: 0, independent unconditional: 613, dependent: 12, dependent conditional: 0, dependent unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1216, independent: 577, independent conditional: 0, independent unconditional: 577, dependent: 14, dependent conditional: 0, dependent unconditional: 14, unknown: 625, unknown conditional: 0, unknown unconditional: 625] , Statistics on independence cache: Total cache size (in pairs): 41, Positive cache size: 38, Positive conditional cache size: 0, Positive unconditional cache size: 38, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 98]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 174 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 12.0s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 6.4s, HoareTripleCheckerStatistics: 27 mSolverCounterUnknown, 306 SdHoareTripleChecker+Valid, 1.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 236 mSDsluCounter, 134 SdHoareTripleChecker+Invalid, 1.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 120 mSDsCounter, 19 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 532 IncrementalHoareTripleChecker+Invalid, 578 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 19 mSolverCounterUnsat, 14 mSDtfsCounter, 532 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 59 GetRequests, 32 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=78occurred in iteration=3, InterpolantAutomatonStates: 15, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 3.0s InterpolantComputationTime, 104 NumberOfCodeBlocks, 104 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 120 ConstructedInterpolants, 8 QuantifiedInterpolants, 1476 SizeOfPredicates, 13 NumberOfNonLiveVariables, 217 ConjunctsInSsa, 33 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 8/12 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-12 02:17:21,285 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a84637-d6a5-42fd-9b90-f968cb9e1eb1/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE