./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 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38cbea1-4797-46e7-9912-c8862e6624a9/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38cbea1-4797-46e7-9912-c8862e6624a9/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38cbea1-4797-46e7-9912-c8862e6624a9/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38cbea1-4797-46e7-9912-c8862e6624a9/bin/uautomizer-verify-uCwYo4JHxu/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_d38cbea1-4797-46e7-9912-c8862e6624a9/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38cbea1-4797-46e7-9912-c8862e6624a9/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash dbd0a32f8466e9a1ac86b6dfec2b7453fe6f40d8d953742d93d3d05c5ad7b7af --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:38:59,829 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:38:59,955 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38cbea1-4797-46e7-9912-c8862e6624a9/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 07:38:59,962 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:38:59,963 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:39:00,000 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:39:00,001 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:39:00,002 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:39:00,003 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:39:00,008 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:39:00,009 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:39:00,010 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:39:00,010 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:39:00,012 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:39:00,013 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:39:00,013 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:39:00,014 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:39:00,014 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:39:00,014 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:39:00,015 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:39:00,015 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:39:00,016 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:39:00,016 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:39:00,017 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:39:00,017 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:39:00,018 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:39:00,019 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:39:00,019 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:39:00,021 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:39:00,022 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:39:00,023 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:39:00,024 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:39:00,024 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:39:00,024 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:39:00,025 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:39:00,025 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:39:00,025 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:39:00,025 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:39:00,026 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:39:00,026 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_d38cbea1-4797-46e7-9912-c8862e6624a9/bin/uautomizer-verify-uCwYo4JHxu/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38cbea1-4797-46e7-9912-c8862e6624a9/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dbd0a32f8466e9a1ac86b6dfec2b7453fe6f40d8d953742d93d3d05c5ad7b7af [2023-11-19 07:39:00,341 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:39:00,367 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:39:00,370 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:39:00,372 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:39:00,372 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:39:00,373 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38cbea1-4797-46e7-9912-c8862e6624a9/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/weaver/popl20-more-min-le-max.wvr.c [2023-11-19 07:39:03,380 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:39:03,745 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:39:03,745 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38cbea1-4797-46e7-9912-c8862e6624a9/sv-benchmarks/c/weaver/popl20-more-min-le-max.wvr.c [2023-11-19 07:39:03,754 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38cbea1-4797-46e7-9912-c8862e6624a9/bin/uautomizer-verify-uCwYo4JHxu/data/bab1c30c3/567aa9a611f54fe5b99731db436474ef/FLAGf25094ba5 [2023-11-19 07:39:03,769 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38cbea1-4797-46e7-9912-c8862e6624a9/bin/uautomizer-verify-uCwYo4JHxu/data/bab1c30c3/567aa9a611f54fe5b99731db436474ef [2023-11-19 07:39:03,772 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:39:03,774 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:39:03,775 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:39:03,776 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:39:03,781 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:39:03,782 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:39:03" (1/1) ... [2023-11-19 07:39:03,784 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13e8923 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:03, skipping insertion in model container [2023-11-19 07:39:03,784 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:39:03" (1/1) ... [2023-11-19 07:39:03,815 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:39:04,013 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_d38cbea1-4797-46e7-9912-c8862e6624a9/sv-benchmarks/c/weaver/popl20-more-min-le-max.wvr.c[2525,2538] [2023-11-19 07:39:04,022 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:39:04,032 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:39:04,055 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_d38cbea1-4797-46e7-9912-c8862e6624a9/sv-benchmarks/c/weaver/popl20-more-min-le-max.wvr.c[2525,2538] [2023-11-19 07:39:04,059 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:39:04,068 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:39:04,068 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:39:04,074 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:39:04,074 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:04 WrapperNode [2023-11-19 07:39:04,075 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:39:04,076 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:39:04,076 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:39:04,076 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:39:04,084 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:04" (1/1) ... [2023-11-19 07:39:04,094 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:04" (1/1) ... [2023-11-19 07:39:04,127 INFO L138 Inliner]: procedures = 24, calls = 43, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 106 [2023-11-19 07:39:04,131 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:39:04,132 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:39:04,132 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:39:04,132 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:39:04,142 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:04" (1/1) ... [2023-11-19 07:39:04,142 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:04" (1/1) ... [2023-11-19 07:39:04,146 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:04" (1/1) ... [2023-11-19 07:39:04,147 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:04" (1/1) ... [2023-11-19 07:39:04,155 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:04" (1/1) ... [2023-11-19 07:39:04,159 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:04" (1/1) ... [2023-11-19 07:39:04,161 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:04" (1/1) ... [2023-11-19 07:39:04,163 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:04" (1/1) ... [2023-11-19 07:39:04,174 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:39:04,175 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:39:04,175 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:39:04,175 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:39:04,176 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:04" (1/1) ... [2023-11-19 07:39:04,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:39:04,200 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38cbea1-4797-46e7-9912-c8862e6624a9/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:39:04,214 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38cbea1-4797-46e7-9912-c8862e6624a9/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:39:04,254 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38cbea1-4797-46e7-9912-c8862e6624a9/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:39:04,264 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:39:04,265 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-19 07:39:04,265 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-19 07:39:04,265 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-19 07:39:04,265 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-19 07:39:04,267 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-19 07:39:04,267 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-19 07:39:04,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:39:04,267 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:39:04,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:39:04,268 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-19 07:39:04,270 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-19 07:39:04,270 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 07:39:04,271 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:39:04,271 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:39:04,271 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:39:04,271 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:39:04,273 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 07:39:04,449 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:39:04,453 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:39:04,830 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:39:04,935 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:39:04,935 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-19 07:39:04,939 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:39:04 BoogieIcfgContainer [2023-11-19 07:39:04,939 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:39:04,942 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:39:04,942 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:39:04,946 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:39:04,947 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:39:03" (1/3) ... [2023-11-19 07:39:04,948 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c3d7fcc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:39:04, skipping insertion in model container [2023-11-19 07:39:04,948 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:04" (2/3) ... [2023-11-19 07:39:04,949 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c3d7fcc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:39:04, skipping insertion in model container [2023-11-19 07:39:04,951 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:39:04" (3/3) ... [2023-11-19 07:39:04,952 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-min-le-max.wvr.c [2023-11-19 07:39:04,964 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 07:39:04,977 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:39:04,977 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 07:39:04,978 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:39:05,075 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-19 07:39:05,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 153 places, 153 transitions, 327 flow [2023-11-19 07:39:05,216 INFO L124 PetriNetUnfolderBase]: 10/150 cut-off events. [2023-11-19 07:39:05,217 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-19 07:39:05,223 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 90 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. [2023-11-19 07:39:05,224 INFO L82 GeneralOperation]: Start removeDead. Operand has 153 places, 153 transitions, 327 flow [2023-11-19 07:39:05,230 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 139 places, 139 transitions, 296 flow [2023-11-19 07:39:05,238 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:39:05,259 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 139 places, 139 transitions, 296 flow [2023-11-19 07:39:05,268 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 139 places, 139 transitions, 296 flow [2023-11-19 07:39:05,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 139 places, 139 transitions, 296 flow [2023-11-19 07:39:05,355 INFO L124 PetriNetUnfolderBase]: 10/139 cut-off events. [2023-11-19 07:39:05,355 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-19 07:39:05,359 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 89 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. [2023-11-19 07:39:05,363 INFO L119 LiptonReduction]: Number of co-enabled transitions 1200 [2023-11-19 07:39:11,391 INFO L134 LiptonReduction]: Checked pairs total: 1340 [2023-11-19 07:39:11,391 INFO L136 LiptonReduction]: Total number of compositions: 133 [2023-11-19 07:39:11,409 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:39:11,416 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;@7f432e45, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:39:11,417 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-19 07:39:11,427 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:39:11,428 INFO L124 PetriNetUnfolderBase]: 3/21 cut-off events. [2023-11-19 07:39:11,428 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-19 07:39:11,428 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:39:11,429 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:39:11,430 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-19 07:39:11,444 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:39:11,445 INFO L85 PathProgramCache]: Analyzing trace with hash 1994657571, now seen corresponding path program 1 times [2023-11-19 07:39:11,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:39:11,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145964258] [2023-11-19 07:39:11,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:39:11,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:39:11,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:39:11,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:39:11,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:39:11,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145964258] [2023-11-19 07:39:11,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145964258] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:39:11,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:39:11,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:39:11,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236345117] [2023-11-19 07:39:11,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:39:11,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:39:11,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:39:12,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:39:12,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:39:12,088 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 286 [2023-11-19 07:39:12,096 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) [2023-11-19 07:39:12,097 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:39:12,097 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 286 [2023-11-19 07:39:12,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:39:12,272 INFO L124 PetriNetUnfolderBase]: 178/280 cut-off events. [2023-11-19 07:39:12,272 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2023-11-19 07:39:12,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 608 conditions, 280 events. 178/280 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 749 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. [2023-11-19 07:39:12,277 INFO L140 encePairwiseOnDemand]: 282/286 looper letters, 29 selfloop transitions, 3 changer transitions 0/32 dead transitions. [2023-11-19 07:39:12,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 32 transitions, 152 flow [2023-11-19 07:39:12,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:39:12,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:39:12,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 557 transitions. [2023-11-19 07:39:12,297 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4868881118881119 [2023-11-19 07:39:12,298 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 557 transitions. [2023-11-19 07:39:12,298 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 557 transitions. [2023-11-19 07:39:12,301 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:39:12,304 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 557 transitions. [2023-11-19 07:39:12,309 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) [2023-11-19 07:39:12,316 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 286.0) internal successors, (1430), 5 states have internal predecessors, (1430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:39:12,317 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 286.0) internal successors, (1430), 5 states have internal predecessors, (1430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:39:12,319 INFO L175 Difference]: Start difference. First operand has 29 places, 22 transitions, 62 flow. Second operand 4 states and 557 transitions. [2023-11-19 07:39:12,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 32 transitions, 152 flow [2023-11-19 07:39:12,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 32 transitions, 136 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-19 07:39:12,326 INFO L231 Difference]: Finished difference. Result has 27 places, 23 transitions, 64 flow [2023-11-19 07:39:12,328 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, 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} [2023-11-19 07:39:12,332 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, -2 predicate places. [2023-11-19 07:39:12,332 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 23 transitions, 64 flow [2023-11-19 07:39:12,333 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) [2023-11-19 07:39:12,333 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:39:12,333 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] [2023-11-19 07:39:12,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:39:12,334 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-19 07:39:12,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:39:12,335 INFO L85 PathProgramCache]: Analyzing trace with hash 1308224392, now seen corresponding path program 1 times [2023-11-19 07:39:12,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:39:12,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712337878] [2023-11-19 07:39:12,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:39:12,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:39:12,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:39:12,510 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:39:12,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:39:12,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712337878] [2023-11-19 07:39:12,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712337878] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:39:12,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:39:12,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:39:12,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810888286] [2023-11-19 07:39:12,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:39:12,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:39:12,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:39:12,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:39:12,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:39:12,554 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 286 [2023-11-19 07:39:12,556 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) [2023-11-19 07:39:12,556 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:39:12,556 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 286 [2023-11-19 07:39:12,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:39:12,689 INFO L124 PetriNetUnfolderBase]: 228/356 cut-off events. [2023-11-19 07:39:12,689 INFO L125 PetriNetUnfolderBase]: For 125/125 co-relation queries the response was YES. [2023-11-19 07:39:12,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 878 conditions, 356 events. 228/356 cut-off events. For 125/125 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1031 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. [2023-11-19 07:39:12,694 INFO L140 encePairwiseOnDemand]: 282/286 looper letters, 31 selfloop transitions, 3 changer transitions 0/34 dead transitions. [2023-11-19 07:39:12,695 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 34 transitions, 166 flow [2023-11-19 07:39:12,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:39:12,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:39:12,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 557 transitions. [2023-11-19 07:39:12,699 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4868881118881119 [2023-11-19 07:39:12,700 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 557 transitions. [2023-11-19 07:39:12,700 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 557 transitions. [2023-11-19 07:39:12,701 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:39:12,701 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 557 transitions. [2023-11-19 07:39:12,703 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) [2023-11-19 07:39:12,707 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 286.0) internal successors, (1430), 5 states have internal predecessors, (1430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:39:12,708 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 286.0) internal successors, (1430), 5 states have internal predecessors, (1430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:39:12,709 INFO L175 Difference]: Start difference. First operand has 27 places, 23 transitions, 64 flow. Second operand 4 states and 557 transitions. [2023-11-19 07:39:12,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 34 transitions, 166 flow [2023-11-19 07:39:12,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 34 transitions, 156 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-11-19 07:39:12,712 INFO L231 Difference]: Finished difference. Result has 29 places, 24 transitions, 72 flow [2023-11-19 07:39:12,712 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, 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} [2023-11-19 07:39:12,713 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 0 predicate places. [2023-11-19 07:39:12,713 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 24 transitions, 72 flow [2023-11-19 07:39:12,714 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) [2023-11-19 07:39:12,714 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:39:12,715 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] [2023-11-19 07:39:12,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:39:12,715 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-19 07:39:12,716 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:39:12,716 INFO L85 PathProgramCache]: Analyzing trace with hash 1030692989, now seen corresponding path program 1 times [2023-11-19 07:39:12,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:39:12,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038442863] [2023-11-19 07:39:12,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:39:12,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:39:12,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:39:12,954 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 07:39:12,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:39:12,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038442863] [2023-11-19 07:39:12,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038442863] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:39:12,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:39:12,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:39:12,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695822640] [2023-11-19 07:39:12,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:39:12,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:39:12,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:39:12,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:39:12,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:39:13,000 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 286 [2023-11-19 07:39:13,001 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) [2023-11-19 07:39:13,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:39:13,002 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 286 [2023-11-19 07:39:13,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:39:13,098 INFO L124 PetriNetUnfolderBase]: 228/357 cut-off events. [2023-11-19 07:39:13,098 INFO L125 PetriNetUnfolderBase]: For 167/167 co-relation queries the response was YES. [2023-11-19 07:39:13,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 955 conditions, 357 events. 228/357 cut-off events. For 167/167 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 967 event pairs, 173 based on Foata normal form. 1/304 useless extension candidates. Maximal degree in co-relation 488. Up to 357 conditions per place. [2023-11-19 07:39:13,102 INFO L140 encePairwiseOnDemand]: 283/286 looper letters, 23 selfloop transitions, 2 changer transitions 0/25 dead transitions. [2023-11-19 07:39:13,103 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 25 transitions, 124 flow [2023-11-19 07:39:13,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:39:13,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:39:13,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 414 transitions. [2023-11-19 07:39:13,135 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4825174825174825 [2023-11-19 07:39:13,135 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 414 transitions. [2023-11-19 07:39:13,135 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 414 transitions. [2023-11-19 07:39:13,135 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:39:13,136 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 414 transitions. [2023-11-19 07:39:13,137 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) [2023-11-19 07:39:13,144 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 286.0) internal successors, (1144), 4 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:39:13,146 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 286.0) internal successors, (1144), 4 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:39:13,146 INFO L175 Difference]: Start difference. First operand has 29 places, 24 transitions, 72 flow. Second operand 3 states and 414 transitions. [2023-11-19 07:39:13,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 25 transitions, 124 flow [2023-11-19 07:39:13,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 25 transitions, 118 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-19 07:39:13,149 INFO L231 Difference]: Finished difference. Result has 30 places, 25 transitions, 78 flow [2023-11-19 07:39:13,150 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, 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} [2023-11-19 07:39:13,152 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 1 predicate places. [2023-11-19 07:39:13,156 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 25 transitions, 78 flow [2023-11-19 07:39:13,156 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) [2023-11-19 07:39:13,157 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:39:13,157 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:39:13,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:39:13,158 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-19 07:39:13,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:39:13,158 INFO L85 PathProgramCache]: Analyzing trace with hash -868447884, now seen corresponding path program 1 times [2023-11-19 07:39:13,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:39:13,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081478956] [2023-11-19 07:39:13,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:39:13,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:39:13,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:39:13,701 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:39:13,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:39:13,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081478956] [2023-11-19 07:39:13,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081478956] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:39:13,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1032706714] [2023-11-19 07:39:13,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:39:13,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:39:13,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38cbea1-4797-46e7-9912-c8862e6624a9/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:39:13,708 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38cbea1-4797-46e7-9912-c8862e6624a9/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:39:13,740 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38cbea1-4797-46e7-9912-c8862e6624a9/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:39:13,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:39:13,871 INFO L262 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 34 conjunts are in the unsatisfiable core [2023-11-19 07:39:13,880 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:39:13,987 INFO L378 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 [2023-11-19 07:39:14,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:39:14,053 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 16 [2023-11-19 07:39:14,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:39:14,143 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 16 [2023-11-19 07:39:14,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:39:14,254 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 16 [2023-11-19 07:39:14,337 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-19 07:39:14,362 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:39:14,362 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:39:15,301 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:39:15,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1032706714] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:39:15,302 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:39:15,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 9, 9] total 19 [2023-11-19 07:39:15,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928954860] [2023-11-19 07:39:15,303 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:39:15,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-19 07:39:15,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:39:15,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-19 07:39:15,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=274, Unknown=4, NotChecked=0, Total=380 [2023-11-19 07:39:16,705 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 286 [2023-11-19 07:39:16,707 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 25 transitions, 78 flow. Second operand has 20 states, 20 states have (on average 87.2) internal successors, (1744), 20 states have internal predecessors, (1744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:39:16,707 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:39:16,707 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 286 [2023-11-19 07:39:16,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:39:17,441 INFO L124 PetriNetUnfolderBase]: 402/627 cut-off events. [2023-11-19 07:39:17,441 INFO L125 PetriNetUnfolderBase]: For 163/163 co-relation queries the response was YES. [2023-11-19 07:39:17,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1598 conditions, 627 events. 402/627 cut-off events. For 163/163 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2240 event pairs, 48 based on Foata normal form. 2/520 useless extension candidates. Maximal degree in co-relation 1585. Up to 194 conditions per place. [2023-11-19 07:39:17,444 INFO L140 encePairwiseOnDemand]: 277/286 looper letters, 0 selfloop transitions, 0 changer transitions 106/106 dead transitions. [2023-11-19 07:39:17,444 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 106 transitions, 527 flow [2023-11-19 07:39:17,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-19 07:39:17,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-19 07:39:17,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1280 transitions. [2023-11-19 07:39:17,451 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3196803196803197 [2023-11-19 07:39:17,451 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1280 transitions. [2023-11-19 07:39:17,451 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1280 transitions. [2023-11-19 07:39:17,453 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:39:17,453 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1280 transitions. [2023-11-19 07:39:17,457 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 91.42857142857143) internal successors, (1280), 14 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:39:17,467 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 286.0) internal successors, (4290), 15 states have internal predecessors, (4290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:39:17,469 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 286.0) internal successors, (4290), 15 states have internal predecessors, (4290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:39:17,469 INFO L175 Difference]: Start difference. First operand has 30 places, 25 transitions, 78 flow. Second operand 14 states and 1280 transitions. [2023-11-19 07:39:17,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 106 transitions, 527 flow [2023-11-19 07:39:17,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 106 transitions, 523 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-19 07:39:17,473 INFO L231 Difference]: Finished difference. Result has 41 places, 0 transitions, 0 flow [2023-11-19 07:39:17,474 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, 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=14, PETRI_FLOW=0, PETRI_PLACES=41, PETRI_TRANSITIONS=0} [2023-11-19 07:39:17,475 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 12 predicate places. [2023-11-19 07:39:17,475 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 0 transitions, 0 flow [2023-11-19 07:39:17,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 87.2) internal successors, (1744), 20 states have internal predecessors, (1744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:39:17,479 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-11-19 07:39:17,480 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-11-19 07:39:17,481 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-11-19 07:39:17,481 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-11-19 07:39:17,509 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38cbea1-4797-46e7-9912-c8862e6624a9/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-19 07:39:17,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38cbea1-4797-46e7-9912-c8862e6624a9/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-11-19 07:39:17,696 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-11-19 07:39:17,700 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-19 07:39:17,700 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 07:39:17,705 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 07:39:17 BasicIcfg [2023-11-19 07:39:17,705 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 07:39:17,705 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 07:39:17,706 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 07:39:17,706 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 07:39:17,706 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:39:04" (3/4) ... [2023-11-19 07:39:17,709 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-19 07:39:17,713 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-11-19 07:39:17,713 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-11-19 07:39:17,713 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2023-11-19 07:39:17,721 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 22 nodes and edges [2023-11-19 07:39:17,721 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-19 07:39:17,722 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-19 07:39:17,722 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-19 07:39:17,837 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38cbea1-4797-46e7-9912-c8862e6624a9/bin/uautomizer-verify-uCwYo4JHxu/witness.graphml [2023-11-19 07:39:17,837 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38cbea1-4797-46e7-9912-c8862e6624a9/bin/uautomizer-verify-uCwYo4JHxu/witness.yml [2023-11-19 07:39:17,838 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 07:39:17,838 INFO L158 Benchmark]: Toolchain (without parser) took 14064.65ms. Allocated memory was 161.5MB in the beginning and 234.9MB in the end (delta: 73.4MB). Free memory was 131.2MB in the beginning and 151.9MB in the end (delta: -20.7MB). Peak memory consumption was 54.0MB. Max. memory is 16.1GB. [2023-11-19 07:39:17,839 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 113.2MB. Free memory is still 62.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:39:17,839 INFO L158 Benchmark]: CACSL2BoogieTranslator took 299.70ms. Allocated memory is still 161.5MB. Free memory was 131.2MB in the beginning and 119.1MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-19 07:39:17,840 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.27ms. Allocated memory is still 161.5MB. Free memory was 119.1MB in the beginning and 117.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 07:39:17,840 INFO L158 Benchmark]: Boogie Preprocessor took 42.13ms. Allocated memory is still 161.5MB. Free memory was 117.4MB in the beginning and 115.8MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:39:17,841 INFO L158 Benchmark]: RCFGBuilder took 764.28ms. Allocated memory is still 161.5MB. Free memory was 115.8MB in the beginning and 95.3MB in the end (delta: 20.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-19 07:39:17,841 INFO L158 Benchmark]: TraceAbstraction took 12763.29ms. Allocated memory was 161.5MB in the beginning and 234.9MB in the end (delta: 73.4MB). Free memory was 94.9MB in the beginning and 157.6MB in the end (delta: -62.8MB). Peak memory consumption was 14.2MB. Max. memory is 16.1GB. [2023-11-19 07:39:17,842 INFO L158 Benchmark]: Witness Printer took 132.44ms. Allocated memory is still 234.9MB. Free memory was 157.6MB in the beginning and 151.9MB in the end (delta: 5.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-19 07:39:17,844 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 113.2MB. Free memory is still 62.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 299.70ms. Allocated memory is still 161.5MB. Free memory was 131.2MB in the beginning and 119.1MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 55.27ms. Allocated memory is still 161.5MB. Free memory was 119.1MB in the beginning and 117.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 42.13ms. Allocated memory is still 161.5MB. Free memory was 117.4MB in the beginning and 115.8MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 764.28ms. Allocated memory is still 161.5MB. Free memory was 115.8MB in the beginning and 95.3MB in the end (delta: 20.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 12763.29ms. Allocated memory was 161.5MB in the beginning and 234.9MB in the end (delta: 73.4MB). Free memory was 94.9MB in the beginning and 157.6MB in the end (delta: -62.8MB). Peak memory consumption was 14.2MB. Max. memory is 16.1GB. * Witness Printer took 132.44ms. Allocated memory is still 234.9MB. Free memory was 157.6MB in the beginning and 151.9MB in the end (delta: 5.8MB). 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: 6.1s, 139 PlacesBefore, 29 PlacesAfterwards, 139 TransitionsBefore, 22 TransitionsAfterwards, 1200 CoEnabledTransitionPairs, 7 FixpointIterations, 79 TrivialSequentialCompositions, 29 ConcurrentSequentialCompositions, 14 TrivialYvCompositions, 4 ConcurrentYvCompositions, 7 ChoiceCompositions, 133 TotalNumberOfCompositions, 1340 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1194, independent: 1168, independent conditional: 0, independent unconditional: 1168, 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: 626, independent: 614, independent conditional: 0, independent unconditional: 614, dependent: 12, dependent conditional: 0, dependent unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1194, independent: 554, independent conditional: 0, independent unconditional: 554, dependent: 14, dependent conditional: 0, dependent unconditional: 14, unknown: 626, unknown conditional: 0, unknown unconditional: 626] , Statistics on independence cache: Total cache size (in pairs): 40, Positive cache size: 37, Positive conditional cache size: 0, Positive unconditional cache size: 37, 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: 12.6s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 6.3s, HoareTripleCheckerStatistics: 28 mSolverCounterUnknown, 674 SdHoareTripleChecker+Valid, 2.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 541 mSDsluCounter, 907 SdHoareTripleChecker+Invalid, 1.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 893 mSDsCounter, 33 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1221 IncrementalHoareTripleChecker+Invalid, 1282 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 33 mSolverCounterUnsat, 14 mSDtfsCounter, 1221 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 68 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=78occurred in iteration=3, InterpolantAutomatonStates: 25, 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: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.6s InterpolantComputationTime, 104 NumberOfCodeBlocks, 104 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 120 ConstructedInterpolants, 6 QuantifiedInterpolants, 1505 SizeOfPredicates, 13 NumberOfNonLiveVariables, 217 ConjunctsInSsa, 34 ConjunctsInUnsatCore, 6 InterpolantComputations, 3 PerfectInterpolantSequences, 5/12 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! [2023-11-19 07:39:17,884 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38cbea1-4797-46e7-9912-c8862e6624a9/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE