./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/goblint-regression/13-privatized_30-traces-oplus-vs-meet_true.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc971117-7fd8-43fc-9f33-66b09e408cf6/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc971117-7fd8-43fc-9f33-66b09e408cf6/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_cc971117-7fd8-43fc-9f33-66b09e408cf6/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc971117-7fd8-43fc-9f33-66b09e408cf6/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/13-privatized_30-traces-oplus-vs-meet_true.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc971117-7fd8-43fc-9f33-66b09e408cf6/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_cc971117-7fd8-43fc-9f33-66b09e408cf6/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 9f8eb81fe04afedf177636b6e0b2ff7ec90c549122dc143b3ac2872279b10356 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:33:06,985 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:33:07,095 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc971117-7fd8-43fc-9f33-66b09e408cf6/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 07:33:07,103 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:33:07,103 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:33:07,148 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:33:07,151 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:33:07,151 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:33:07,152 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:33:07,157 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:33:07,159 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:33:07,160 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:33:07,160 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:33:07,162 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:33:07,163 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:33:07,163 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:33:07,164 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:33:07,164 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:33:07,164 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:33:07,165 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:33:07,166 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:33:07,166 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:33:07,167 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:33:07,167 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:33:07,167 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:33:07,168 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:33:07,169 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:33:07,169 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:33:07,170 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:33:07,170 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:33:07,171 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:33:07,172 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:33:07,172 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:33:07,172 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:33:07,173 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:33:07,173 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:33:07,173 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:33:07,173 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:33:07,174 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:33:07,174 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_cc971117-7fd8-43fc-9f33-66b09e408cf6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc971117-7fd8-43fc-9f33-66b09e408cf6/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9f8eb81fe04afedf177636b6e0b2ff7ec90c549122dc143b3ac2872279b10356 [2023-11-19 07:33:07,490 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:33:07,540 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:33:07,543 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:33:07,544 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:33:07,545 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:33:07,546 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc971117-7fd8-43fc-9f33-66b09e408cf6/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/goblint-regression/13-privatized_30-traces-oplus-vs-meet_true.i [2023-11-19 07:33:10,772 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:33:11,117 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:33:11,122 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc971117-7fd8-43fc-9f33-66b09e408cf6/sv-benchmarks/c/goblint-regression/13-privatized_30-traces-oplus-vs-meet_true.i [2023-11-19 07:33:11,143 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc971117-7fd8-43fc-9f33-66b09e408cf6/bin/uautomizer-verify-uCwYo4JHxu/data/0399a9573/753827b3c5764e9eb37ada075c4d9768/FLAG4d5d6b3c2 [2023-11-19 07:33:11,159 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc971117-7fd8-43fc-9f33-66b09e408cf6/bin/uautomizer-verify-uCwYo4JHxu/data/0399a9573/753827b3c5764e9eb37ada075c4d9768 [2023-11-19 07:33:11,166 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:33:11,168 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:33:11,171 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:33:11,171 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:33:11,178 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:33:11,179 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:33:11" (1/1) ... [2023-11-19 07:33:11,180 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@418a4734 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:11, skipping insertion in model container [2023-11-19 07:33:11,181 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:33:11" (1/1) ... [2023-11-19 07:33:11,243 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:33:11,453 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_cc971117-7fd8-43fc-9f33-66b09e408cf6/sv-benchmarks/c/goblint-regression/13-privatized_30-traces-oplus-vs-meet_true.i[1097,1110] [2023-11-19 07:33:11,713 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:33:11,729 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:33:11,749 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_cc971117-7fd8-43fc-9f33-66b09e408cf6/sv-benchmarks/c/goblint-regression/13-privatized_30-traces-oplus-vs-meet_true.i[1097,1110] [2023-11-19 07:33:11,789 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:33:11,840 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:33:11,841 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:11 WrapperNode [2023-11-19 07:33:11,841 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:33:11,842 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:33:11,843 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:33:11,843 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:33:11,855 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:11" (1/1) ... [2023-11-19 07:33:11,870 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:11" (1/1) ... [2023-11-19 07:33:11,900 INFO L138 Inliner]: procedures = 162, calls = 31, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 57 [2023-11-19 07:33:11,901 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:33:11,902 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:33:11,902 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:33:11,902 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:33:11,912 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:11" (1/1) ... [2023-11-19 07:33:11,912 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:11" (1/1) ... [2023-11-19 07:33:11,921 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:11" (1/1) ... [2023-11-19 07:33:11,922 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:11" (1/1) ... [2023-11-19 07:33:11,927 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:11" (1/1) ... [2023-11-19 07:33:11,929 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:11" (1/1) ... [2023-11-19 07:33:11,933 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:11" (1/1) ... [2023-11-19 07:33:11,935 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:11" (1/1) ... [2023-11-19 07:33:11,950 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:33:11,957 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:33:11,958 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:33:11,958 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:33:11,959 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:11" (1/1) ... [2023-11-19 07:33:11,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:33:11,977 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc971117-7fd8-43fc-9f33-66b09e408cf6/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:33:11,992 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc971117-7fd8-43fc-9f33-66b09e408cf6/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:33:12,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc971117-7fd8-43fc-9f33-66b09e408cf6/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:33:12,039 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:33:12,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:33:12,040 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-19 07:33:12,040 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:33:12,041 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:33:12,041 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-19 07:33:12,041 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-19 07:33:12,041 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:33:12,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:33:12,042 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:33:12,042 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:33:12,044 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 07:33:12,247 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:33:12,249 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:33:12,485 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:33:12,494 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:33:12,494 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 07:33:12,525 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:33:12 BoogieIcfgContainer [2023-11-19 07:33:12,526 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:33:12,529 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:33:12,529 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:33:12,533 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:33:12,533 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:33:11" (1/3) ... [2023-11-19 07:33:12,534 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53d4a400 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:33:12, skipping insertion in model container [2023-11-19 07:33:12,534 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:11" (2/3) ... [2023-11-19 07:33:12,535 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53d4a400 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:33:12, skipping insertion in model container [2023-11-19 07:33:12,535 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:33:12" (3/3) ... [2023-11-19 07:33:12,537 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_30-traces-oplus-vs-meet_true.i [2023-11-19 07:33:12,546 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 07:33:12,559 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:33:12,559 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-19 07:33:12,559 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:33:12,612 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-19 07:33:12,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 82 places, 80 transitions, 167 flow [2023-11-19 07:33:12,726 INFO L124 PetriNetUnfolderBase]: 2/79 cut-off events. [2023-11-19 07:33:12,727 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 07:33:12,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84 conditions, 79 events. 2/79 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 47 event pairs, 0 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 37. Up to 2 conditions per place. [2023-11-19 07:33:12,731 INFO L82 GeneralOperation]: Start removeDead. Operand has 82 places, 80 transitions, 167 flow [2023-11-19 07:33:12,736 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 66 places, 63 transitions, 129 flow [2023-11-19 07:33:12,740 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:33:12,750 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 66 places, 63 transitions, 129 flow [2023-11-19 07:33:12,753 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 66 places, 63 transitions, 129 flow [2023-11-19 07:33:12,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 66 places, 63 transitions, 129 flow [2023-11-19 07:33:12,772 INFO L124 PetriNetUnfolderBase]: 1/63 cut-off events. [2023-11-19 07:33:12,773 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:33:12,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67 conditions, 63 events. 1/63 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 28 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 37. Up to 2 conditions per place. [2023-11-19 07:33:12,774 INFO L119 LiptonReduction]: Number of co-enabled transitions 308 [2023-11-19 07:33:15,920 INFO L134 LiptonReduction]: Checked pairs total: 783 [2023-11-19 07:33:15,921 INFO L136 LiptonReduction]: Total number of compositions: 60 [2023-11-19 07:33:15,936 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:33:15,943 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;@6b4af72, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:33:15,943 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-11-19 07:33:15,944 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:33:15,945 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-11-19 07:33:15,945 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:33:15,945 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:33:15,946 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-19 07:33:15,947 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-19 07:33:15,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:33:15,951 INFO L85 PathProgramCache]: Analyzing trace with hash 276, now seen corresponding path program 1 times [2023-11-19 07:33:15,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:33:15,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759815582] [2023-11-19 07:33:15,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:33:15,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:33:16,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:16,101 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 07:33:16,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:33:16,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759815582] [2023-11-19 07:33:16,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759815582] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:33:16,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:33:16,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-19 07:33:16,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091968236] [2023-11-19 07:33:16,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:33:16,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:33:16,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:33:16,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:33:16,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:33:16,151 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 140 [2023-11-19 07:33:16,153 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 14 transitions, 31 flow. Second operand has 2 states, 2 states have (on average 74.5) internal successors, (149), 2 states have internal predecessors, (149), 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 07:33:16,153 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:33:16,154 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 140 [2023-11-19 07:33:16,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:33:16,198 INFO L124 PetriNetUnfolderBase]: 12/45 cut-off events. [2023-11-19 07:33:16,199 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:33:16,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83 conditions, 45 events. 12/45 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 90 event pairs, 12 based on Foata normal form. 0/43 useless extension candidates. Maximal degree in co-relation 74. Up to 34 conditions per place. [2023-11-19 07:33:16,201 INFO L140 encePairwiseOnDemand]: 139/140 looper letters, 9 selfloop transitions, 0 changer transitions 0/13 dead transitions. [2023-11-19 07:33:16,201 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 18 places, 13 transitions, 47 flow [2023-11-19 07:33:16,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:33:16,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-19 07:33:16,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 158 transitions. [2023-11-19 07:33:16,216 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5642857142857143 [2023-11-19 07:33:16,216 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 158 transitions. [2023-11-19 07:33:16,217 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 158 transitions. [2023-11-19 07:33:16,219 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:33:16,221 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 158 transitions. [2023-11-19 07:33:16,224 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 79.0) internal successors, (158), 2 states have internal predecessors, (158), 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 07:33:16,229 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 140.0) internal successors, (420), 3 states have internal predecessors, (420), 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 07:33:16,230 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 140.0) internal successors, (420), 3 states have internal predecessors, (420), 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 07:33:16,232 INFO L175 Difference]: Start difference. First operand has 18 places, 14 transitions, 31 flow. Second operand 2 states and 158 transitions. [2023-11-19 07:33:16,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 18 places, 13 transitions, 47 flow [2023-11-19 07:33:16,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 17 places, 13 transitions, 46 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:33:16,237 INFO L231 Difference]: Finished difference. Result has 17 places, 13 transitions, 28 flow [2023-11-19 07:33:16,239 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=28, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=28, PETRI_PLACES=17, PETRI_TRANSITIONS=13} [2023-11-19 07:33:16,243 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, -1 predicate places. [2023-11-19 07:33:16,243 INFO L495 AbstractCegarLoop]: Abstraction has has 17 places, 13 transitions, 28 flow [2023-11-19 07:33:16,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 74.5) internal successors, (149), 2 states have internal predecessors, (149), 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 07:33:16,244 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:33:16,244 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 07:33:16,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:33:16,245 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-19 07:33:16,246 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:33:16,246 INFO L85 PathProgramCache]: Analyzing trace with hash 261547235, now seen corresponding path program 1 times [2023-11-19 07:33:16,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:33:16,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000133239] [2023-11-19 07:33:16,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:33:16,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:33:16,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:16,484 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 07:33:16,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:33:16,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000133239] [2023-11-19 07:33:16,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000133239] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:33:16,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:33:16,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:33:16,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570646093] [2023-11-19 07:33:16,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:33:16,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:33:16,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:33:16,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:33:16,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:33:16,499 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 140 [2023-11-19 07:33:16,500 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 17 places, 13 transitions, 28 flow. Second operand has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 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 07:33:16,500 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:33:16,500 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 140 [2023-11-19 07:33:16,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:33:16,532 INFO L124 PetriNetUnfolderBase]: 13/46 cut-off events. [2023-11-19 07:33:16,532 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:33:16,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 46 events. 13/46 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 87 event pairs, 9 based on Foata normal form. 5/51 useless extension candidates. Maximal degree in co-relation 87. Up to 26 conditions per place. [2023-11-19 07:33:16,534 INFO L140 encePairwiseOnDemand]: 136/140 looper letters, 10 selfloop transitions, 3 changer transitions 0/15 dead transitions. [2023-11-19 07:33:16,534 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 19 places, 15 transitions, 58 flow [2023-11-19 07:33:16,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:33:16,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:33:16,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 227 transitions. [2023-11-19 07:33:16,538 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5404761904761904 [2023-11-19 07:33:16,538 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 227 transitions. [2023-11-19 07:33:16,538 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 227 transitions. [2023-11-19 07:33:16,539 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:33:16,540 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 227 transitions. [2023-11-19 07:33:16,542 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 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 07:33:16,544 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 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 07:33:16,545 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 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 07:33:16,545 INFO L175 Difference]: Start difference. First operand has 17 places, 13 transitions, 28 flow. Second operand 3 states and 227 transitions. [2023-11-19 07:33:16,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 19 places, 15 transitions, 58 flow [2023-11-19 07:33:16,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 15 transitions, 58 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:33:16,548 INFO L231 Difference]: Finished difference. Result has 20 places, 13 transitions, 39 flow [2023-11-19 07:33:16,548 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=28, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=39, PETRI_PLACES=20, PETRI_TRANSITIONS=13} [2023-11-19 07:33:16,549 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 2 predicate places. [2023-11-19 07:33:16,550 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 13 transitions, 39 flow [2023-11-19 07:33:16,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 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 07:33:16,551 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:33:16,552 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:33:16,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:33:16,553 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-19 07:33:16,555 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:33:16,559 INFO L85 PathProgramCache]: Analyzing trace with hash 685720543, now seen corresponding path program 1 times [2023-11-19 07:33:16,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:33:16,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105943537] [2023-11-19 07:33:16,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:33:16,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:33:16,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:16,772 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 07:33:16,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:33:16,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105943537] [2023-11-19 07:33:16,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105943537] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:33:16,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:33:16,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:33:16,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533771697] [2023-11-19 07:33:16,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:33:16,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:33:16,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:33:16,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:33:16,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:33:16,813 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 140 [2023-11-19 07:33:16,814 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 13 transitions, 39 flow. Second operand has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 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 07:33:16,814 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:33:16,815 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 140 [2023-11-19 07:33:16,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:33:16,858 INFO L124 PetriNetUnfolderBase]: 9/40 cut-off events. [2023-11-19 07:33:16,858 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-19 07:33:16,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92 conditions, 40 events. 9/40 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 71 event pairs, 4 based on Foata normal form. 3/43 useless extension candidates. Maximal degree in co-relation 87. Up to 21 conditions per place. [2023-11-19 07:33:16,859 INFO L140 encePairwiseOnDemand]: 135/140 looper letters, 9 selfloop transitions, 4 changer transitions 2/17 dead transitions. [2023-11-19 07:33:16,859 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 17 transitions, 77 flow [2023-11-19 07:33:16,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:33:16,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:33:16,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 215 transitions. [2023-11-19 07:33:16,862 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5119047619047619 [2023-11-19 07:33:16,863 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 215 transitions. [2023-11-19 07:33:16,863 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 215 transitions. [2023-11-19 07:33:16,863 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:33:16,863 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 215 transitions. [2023-11-19 07:33:16,864 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 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 07:33:16,866 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 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 07:33:16,867 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 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 07:33:16,867 INFO L175 Difference]: Start difference. First operand has 20 places, 13 transitions, 39 flow. Second operand 3 states and 215 transitions. [2023-11-19 07:33:16,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 17 transitions, 77 flow [2023-11-19 07:33:16,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 17 transitions, 71 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:33:16,869 INFO L231 Difference]: Finished difference. Result has 21 places, 13 transitions, 47 flow [2023-11-19 07:33:16,869 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=33, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=47, PETRI_PLACES=21, PETRI_TRANSITIONS=13} [2023-11-19 07:33:16,870 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 3 predicate places. [2023-11-19 07:33:16,870 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 13 transitions, 47 flow [2023-11-19 07:33:16,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 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 07:33:16,870 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:33:16,871 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:33:16,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:33:16,875 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-19 07:33:16,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:33:16,876 INFO L85 PathProgramCache]: Analyzing trace with hash -197539721, now seen corresponding path program 1 times [2023-11-19 07:33:16,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:33:16,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945027851] [2023-11-19 07:33:16,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:33:16,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:33:16,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:17,123 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 07:33:17,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:33:17,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945027851] [2023-11-19 07:33:17,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945027851] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:33:17,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:33:17,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:33:17,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530083324] [2023-11-19 07:33:17,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:33:17,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:33:17,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:33:17,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:33:17,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:33:17,213 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 140 [2023-11-19 07:33:17,214 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 13 transitions, 47 flow. Second operand has 4 states, 4 states have (on average 69.0) internal successors, (276), 4 states have internal predecessors, (276), 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 07:33:17,214 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:33:17,214 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 140 [2023-11-19 07:33:17,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:33:17,255 INFO L124 PetriNetUnfolderBase]: 1/15 cut-off events. [2023-11-19 07:33:17,255 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-19 07:33:17,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44 conditions, 15 events. 1/15 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 12 event pairs, 0 based on Foata normal form. 6/21 useless extension candidates. Maximal degree in co-relation 38. Up to 9 conditions per place. [2023-11-19 07:33:17,255 INFO L140 encePairwiseOnDemand]: 135/140 looper letters, 4 selfloop transitions, 4 changer transitions 3/12 dead transitions. [2023-11-19 07:33:17,256 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 12 transitions, 63 flow [2023-11-19 07:33:17,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:33:17,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:33:17,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 281 transitions. [2023-11-19 07:33:17,261 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5017857142857143 [2023-11-19 07:33:17,261 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 281 transitions. [2023-11-19 07:33:17,262 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 281 transitions. [2023-11-19 07:33:17,262 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:33:17,262 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 281 transitions. [2023-11-19 07:33:17,265 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 70.25) internal successors, (281), 4 states have internal predecessors, (281), 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 07:33:17,269 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 140.0) internal successors, (700), 5 states have internal predecessors, (700), 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 07:33:17,270 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 140.0) internal successors, (700), 5 states have internal predecessors, (700), 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 07:33:17,270 INFO L175 Difference]: Start difference. First operand has 21 places, 13 transitions, 47 flow. Second operand 4 states and 281 transitions. [2023-11-19 07:33:17,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 12 transitions, 63 flow [2023-11-19 07:33:17,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 12 transitions, 55 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:33:17,271 INFO L231 Difference]: Finished difference. Result has 20 places, 9 transitions, 35 flow [2023-11-19 07:33:17,271 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=11, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=35, PETRI_PLACES=20, PETRI_TRANSITIONS=9} [2023-11-19 07:33:17,273 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 2 predicate places. [2023-11-19 07:33:17,273 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 9 transitions, 35 flow [2023-11-19 07:33:17,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.0) internal successors, (276), 4 states have internal predecessors, (276), 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 07:33:17,274 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:33:17,274 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:33:17,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:33:17,276 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-19 07:33:17,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:33:17,277 INFO L85 PathProgramCache]: Analyzing trace with hash 481525839, now seen corresponding path program 2 times [2023-11-19 07:33:17,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:33:17,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236207081] [2023-11-19 07:33:17,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:33:17,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:33:17,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:17,586 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 07:33:17,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:33:17,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236207081] [2023-11-19 07:33:17,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236207081] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:33:17,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:33:17,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:33:17,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378283435] [2023-11-19 07:33:17,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:33:17,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:33:17,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:33:17,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:33:17,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:33:17,686 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 140 [2023-11-19 07:33:17,686 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 9 transitions, 35 flow. Second operand has 5 states, 5 states have (on average 66.6) internal successors, (333), 5 states have internal predecessors, (333), 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 07:33:17,687 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:33:17,687 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 140 [2023-11-19 07:33:17,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:33:17,716 INFO L124 PetriNetUnfolderBase]: 1/11 cut-off events. [2023-11-19 07:33:17,716 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-19 07:33:17,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 11 events. 1/11 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 7 event pairs, 0 based on Foata normal form. 1/12 useless extension candidates. Maximal degree in co-relation 31. Up to 7 conditions per place. [2023-11-19 07:33:17,717 INFO L140 encePairwiseOnDemand]: 137/140 looper letters, 0 selfloop transitions, 0 changer transitions 9/9 dead transitions. [2023-11-19 07:33:17,717 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 9 transitions, 51 flow [2023-11-19 07:33:17,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:33:17,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:33:17,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 269 transitions. [2023-11-19 07:33:17,719 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48035714285714287 [2023-11-19 07:33:17,719 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 269 transitions. [2023-11-19 07:33:17,719 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 269 transitions. [2023-11-19 07:33:17,719 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:33:17,720 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 269 transitions. [2023-11-19 07:33:17,721 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 67.25) internal successors, (269), 4 states have internal predecessors, (269), 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 07:33:17,723 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 140.0) internal successors, (700), 5 states have internal predecessors, (700), 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 07:33:17,723 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 140.0) internal successors, (700), 5 states have internal predecessors, (700), 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 07:33:17,723 INFO L175 Difference]: Start difference. First operand has 20 places, 9 transitions, 35 flow. Second operand 4 states and 269 transitions. [2023-11-19 07:33:17,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 9 transitions, 51 flow [2023-11-19 07:33:17,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 17 places, 9 transitions, 44 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-19 07:33:17,725 INFO L231 Difference]: Finished difference. Result has 17 places, 0 transitions, 0 flow [2023-11-19 07:33:17,725 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=25, PETRI_DIFFERENCE_MINUEND_PLACES=14, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=8, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=17, PETRI_TRANSITIONS=0} [2023-11-19 07:33:17,728 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, -1 predicate places. [2023-11-19 07:33:17,729 INFO L495 AbstractCegarLoop]: Abstraction has has 17 places, 0 transitions, 0 flow [2023-11-19 07:33:17,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 66.6) internal successors, (333), 5 states have internal predecessors, (333), 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 07:33:17,736 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-11-19 07:33:17,737 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2023-11-19 07:33:17,737 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-11-19 07:33:17,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 07:33:17,738 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1] [2023-11-19 07:33:17,742 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-19 07:33:17,742 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 07:33:17,752 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 07:33:17 BasicIcfg [2023-11-19 07:33:17,752 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 07:33:17,753 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 07:33:17,753 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 07:33:17,753 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 07:33:17,754 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:33:12" (3/4) ... [2023-11-19 07:33:17,756 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-19 07:33:17,761 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2023-11-19 07:33:17,767 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2023-11-19 07:33:17,767 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-19 07:33:17,768 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-19 07:33:17,768 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-19 07:33:17,873 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc971117-7fd8-43fc-9f33-66b09e408cf6/bin/uautomizer-verify-uCwYo4JHxu/witness.graphml [2023-11-19 07:33:17,873 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc971117-7fd8-43fc-9f33-66b09e408cf6/bin/uautomizer-verify-uCwYo4JHxu/witness.yml [2023-11-19 07:33:17,873 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 07:33:17,874 INFO L158 Benchmark]: Toolchain (without parser) took 6706.47ms. Allocated memory was 155.2MB in the beginning and 213.9MB in the end (delta: 58.7MB). Free memory was 107.0MB in the beginning and 94.6MB in the end (delta: 12.4MB). Peak memory consumption was 73.1MB. Max. memory is 16.1GB. [2023-11-19 07:33:17,874 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 155.2MB. Free memory is still 129.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:33:17,875 INFO L158 Benchmark]: CACSL2BoogieTranslator took 670.43ms. Allocated memory is still 155.2MB. Free memory was 107.0MB in the beginning and 87.8MB in the end (delta: 19.2MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-19 07:33:17,875 INFO L158 Benchmark]: Boogie Procedure Inliner took 58.97ms. Allocated memory is still 155.2MB. Free memory was 87.8MB in the beginning and 85.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 07:33:17,875 INFO L158 Benchmark]: Boogie Preprocessor took 54.79ms. Allocated memory is still 155.2MB. Free memory was 85.7MB in the beginning and 84.2MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:33:17,876 INFO L158 Benchmark]: RCFGBuilder took 568.64ms. Allocated memory was 155.2MB in the beginning and 213.9MB in the end (delta: 58.7MB). Free memory was 84.2MB in the beginning and 184.8MB in the end (delta: -100.6MB). Peak memory consumption was 19.6MB. Max. memory is 16.1GB. [2023-11-19 07:33:17,876 INFO L158 Benchmark]: TraceAbstraction took 5223.36ms. Allocated memory is still 213.9MB. Free memory was 184.8MB in the beginning and 98.8MB in the end (delta: 86.0MB). Peak memory consumption was 85.0MB. Max. memory is 16.1GB. [2023-11-19 07:33:17,877 INFO L158 Benchmark]: Witness Printer took 120.70ms. Allocated memory is still 213.9MB. Free memory was 98.8MB in the beginning and 94.6MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-19 07:33:17,879 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 155.2MB. Free memory is still 129.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 670.43ms. Allocated memory is still 155.2MB. Free memory was 107.0MB in the beginning and 87.8MB in the end (delta: 19.2MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 58.97ms. Allocated memory is still 155.2MB. Free memory was 87.8MB in the beginning and 85.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 54.79ms. Allocated memory is still 155.2MB. Free memory was 85.7MB in the beginning and 84.2MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 568.64ms. Allocated memory was 155.2MB in the beginning and 213.9MB in the end (delta: 58.7MB). Free memory was 84.2MB in the beginning and 184.8MB in the end (delta: -100.6MB). Peak memory consumption was 19.6MB. Max. memory is 16.1GB. * TraceAbstraction took 5223.36ms. Allocated memory is still 213.9MB. Free memory was 184.8MB in the beginning and 98.8MB in the end (delta: 86.0MB). Peak memory consumption was 85.0MB. Max. memory is 16.1GB. * Witness Printer took 120.70ms. Allocated memory is still 213.9MB. Free memory was 98.8MB in the beginning and 94.6MB in the end (delta: 4.2MB). 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: 3.2s, 66 PlacesBefore, 18 PlacesAfterwards, 63 TransitionsBefore, 14 TransitionsAfterwards, 308 CoEnabledTransitionPairs, 6 FixpointIterations, 41 TrivialSequentialCompositions, 14 ConcurrentSequentialCompositions, 4 TrivialYvCompositions, 0 ConcurrentYvCompositions, 1 ChoiceCompositions, 60 TotalNumberOfCompositions, 783 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 362, independent: 244, independent conditional: 0, independent unconditional: 244, dependent: 118, dependent conditional: 0, dependent unconditional: 118, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 172, independent: 149, independent conditional: 0, independent unconditional: 149, dependent: 23, dependent conditional: 0, dependent unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 362, independent: 95, independent conditional: 0, independent unconditional: 95, dependent: 95, dependent conditional: 0, dependent unconditional: 95, unknown: 172, unknown conditional: 0, unknown unconditional: 172] , Statistics on independence cache: Total cache size (in pairs): 16, Positive cache size: 7, Positive conditional cache size: 0, Positive unconditional cache size: 7, Negative cache size: 9, Negative conditional cache size: 0, Negative unconditional cache size: 9, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 19]: 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 3 procedures, 95 locations, 3 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: 5.1s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 161 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 72 mSDsluCounter, 8 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 5 mSDsCounter, 45 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 244 IncrementalHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 45 mSolverCounterUnsat, 3 mSDtfsCounter, 244 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=47occurred in iteration=3, InterpolantAutomatonStates: 16, 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, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 32 NumberOfCodeBlocks, 32 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 27 ConstructedInterpolants, 0 QuantifiedInterpolants, 169 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 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 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-19 07:33:17,916 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc971117-7fd8-43fc-9f33-66b09e408cf6/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