./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/parallel-ticket-2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a 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_3bece83f-1375-4cdc-88dc-8bc0e1de60c4/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bece83f-1375-4cdc-88dc-8bc0e1de60c4/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bece83f-1375-4cdc-88dc-8bc0e1de60c4/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bece83f-1375-4cdc-88dc-8bc0e1de60c4/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-ticket-2.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bece83f-1375-4cdc-88dc-8bc0e1de60c4/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bece83f-1375-4cdc-88dc-8bc0e1de60c4/bin/uautomizer-ZsLfNo2U6R --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2c45fd7cfbad1c12ff3ef6a6150c824b5f7de404c290f417bc2834c0c8e69422 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-25 15:33:20,151 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 15:33:20,153 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 15:33:20,175 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 15:33:20,176 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 15:33:20,177 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 15:33:20,178 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 15:33:20,180 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 15:33:20,182 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 15:33:20,183 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 15:33:20,184 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 15:33:20,185 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 15:33:20,186 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 15:33:20,192 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 15:33:20,194 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 15:33:20,197 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 15:33:20,199 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 15:33:20,204 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 15:33:20,207 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 15:33:20,214 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 15:33:20,216 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 15:33:20,219 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 15:33:20,221 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 15:33:20,222 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 15:33:20,233 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 15:33:20,233 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 15:33:20,234 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 15:33:20,235 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 15:33:20,236 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 15:33:20,237 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 15:33:20,238 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 15:33:20,239 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 15:33:20,241 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 15:33:20,243 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 15:33:20,245 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 15:33:20,245 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 15:33:20,246 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 15:33:20,246 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 15:33:20,246 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 15:33:20,248 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 15:33:20,249 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 15:33:20,250 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bece83f-1375-4cdc-88dc-8bc0e1de60c4/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-25 15:33:20,312 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 15:33:20,313 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 15:33:20,313 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 15:33:20,314 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 15:33:20,315 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 15:33:20,315 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 15:33:20,316 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 15:33:20,316 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 15:33:20,316 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 15:33:20,317 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 15:33:20,318 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 15:33:20,318 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 15:33:20,318 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 15:33:20,318 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 15:33:20,319 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 15:33:20,319 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 15:33:20,319 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 15:33:20,319 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 15:33:20,319 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 15:33:20,320 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 15:33:20,320 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 15:33:20,320 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 15:33:20,320 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 15:33:20,321 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 15:33:20,321 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 15:33:20,321 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 15:33:20,321 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 15:33:20,322 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 15:33:20,322 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 15:33:20,323 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 15:33:20,323 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 15:33:20,323 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 15:33:20,323 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 15:33:20,324 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 15:33:20,324 INFO L138 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_3bece83f-1375-4cdc-88dc-8bc0e1de60c4/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bece83f-1375-4cdc-88dc-8bc0e1de60c4/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2c45fd7cfbad1c12ff3ef6a6150c824b5f7de404c290f417bc2834c0c8e69422 [2022-11-25 15:33:20,646 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 15:33:20,716 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 15:33:20,718 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 15:33:20,720 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 15:33:20,720 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 15:33:20,721 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bece83f-1375-4cdc-88dc-8bc0e1de60c4/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/weaver/parallel-ticket-2.wvr.c [2022-11-25 15:33:23,703 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 15:33:23,948 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 15:33:23,949 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bece83f-1375-4cdc-88dc-8bc0e1de60c4/sv-benchmarks/c/weaver/parallel-ticket-2.wvr.c [2022-11-25 15:33:23,955 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bece83f-1375-4cdc-88dc-8bc0e1de60c4/bin/uautomizer-ZsLfNo2U6R/data/c46efc5e9/362de03fd77a4c3fbd1d0164d5230e1f/FLAG8c9cb8d4e [2022-11-25 15:33:23,971 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bece83f-1375-4cdc-88dc-8bc0e1de60c4/bin/uautomizer-ZsLfNo2U6R/data/c46efc5e9/362de03fd77a4c3fbd1d0164d5230e1f [2022-11-25 15:33:23,974 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 15:33:23,976 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 15:33:23,977 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 15:33:23,977 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 15:33:23,981 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 15:33:23,982 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 03:33:23" (1/1) ... [2022-11-25 15:33:23,983 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@673ddf2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:33:23, skipping insertion in model container [2022-11-25 15:33:23,983 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 03:33:23" (1/1) ... [2022-11-25 15:33:23,991 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 15:33:24,010 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 15:33:24,196 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:33:24,198 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:33:24,198 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:33:24,199 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:33:24,199 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:33:24,200 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:33:24,200 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:33:24,201 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:33:24,201 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:33:24,201 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:33:24,203 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:33:24,204 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:33:24,204 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:33:24,205 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:33:24,205 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:33:24,206 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:33:24,207 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:33:24,207 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:33:24,215 WARN L237 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_3bece83f-1375-4cdc-88dc-8bc0e1de60c4/sv-benchmarks/c/weaver/parallel-ticket-2.wvr.c[2652,2665] [2022-11-25 15:33:24,220 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 15:33:24,230 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 15:33:24,244 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:33:24,244 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:33:24,245 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:33:24,245 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:33:24,246 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:33:24,246 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:33:24,247 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:33:24,247 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:33:24,247 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:33:24,248 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:33:24,248 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:33:24,249 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:33:24,249 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:33:24,250 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:33:24,250 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:33:24,251 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:33:24,252 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:33:24,252 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:33:24,257 WARN L237 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_3bece83f-1375-4cdc-88dc-8bc0e1de60c4/sv-benchmarks/c/weaver/parallel-ticket-2.wvr.c[2652,2665] [2022-11-25 15:33:24,258 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 15:33:24,273 INFO L208 MainTranslator]: Completed translation [2022-11-25 15:33:24,274 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:33:24 WrapperNode [2022-11-25 15:33:24,274 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 15:33:24,275 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 15:33:24,276 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 15:33:24,276 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 15:33:24,284 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:33:24" (1/1) ... [2022-11-25 15:33:24,307 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:33:24" (1/1) ... [2022-11-25 15:33:24,331 INFO L138 Inliner]: procedures = 21, calls = 40, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 118 [2022-11-25 15:33:24,332 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 15:33:24,332 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 15:33:24,333 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 15:33:24,333 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 15:33:24,342 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:33:24" (1/1) ... [2022-11-25 15:33:24,343 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:33:24" (1/1) ... [2022-11-25 15:33:24,345 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:33:24" (1/1) ... [2022-11-25 15:33:24,345 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:33:24" (1/1) ... [2022-11-25 15:33:24,350 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:33:24" (1/1) ... [2022-11-25 15:33:24,352 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:33:24" (1/1) ... [2022-11-25 15:33:24,353 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:33:24" (1/1) ... [2022-11-25 15:33:24,354 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:33:24" (1/1) ... [2022-11-25 15:33:24,357 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 15:33:24,358 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 15:33:24,358 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 15:33:24,358 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 15:33:24,359 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:33:24" (1/1) ... [2022-11-25 15:33:24,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 15:33:24,379 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bece83f-1375-4cdc-88dc-8bc0e1de60c4/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:33:24,394 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bece83f-1375-4cdc-88dc-8bc0e1de60c4/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 15:33:24,410 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bece83f-1375-4cdc-88dc-8bc0e1de60c4/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 15:33:24,445 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 15:33:24,445 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-25 15:33:24,446 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-25 15:33:24,446 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-25 15:33:24,446 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-25 15:33:24,446 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 15:33:24,446 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 15:33:24,446 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 15:33:24,447 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-25 15:33:24,447 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-25 15:33:24,447 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 15:33:24,447 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 15:33:24,447 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 15:33:24,448 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 15:33:24,449 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-25 15:33:24,550 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 15:33:24,552 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 15:33:24,914 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 15:33:25,046 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 15:33:25,046 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-25 15:33:25,049 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 03:33:25 BoogieIcfgContainer [2022-11-25 15:33:25,049 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 15:33:25,051 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 15:33:25,052 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 15:33:25,055 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 15:33:25,056 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 03:33:23" (1/3) ... [2022-11-25 15:33:25,057 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7531660e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 03:33:25, skipping insertion in model container [2022-11-25 15:33:25,057 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:33:24" (2/3) ... [2022-11-25 15:33:25,057 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7531660e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 03:33:25, skipping insertion in model container [2022-11-25 15:33:25,057 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 03:33:25" (3/3) ... [2022-11-25 15:33:25,059 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-ticket-2.wvr.c [2022-11-25 15:33:25,068 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-25 15:33:25,078 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 15:33:25,079 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-25 15:33:25,079 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 15:33:25,135 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-25 15:33:25,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 101 places, 96 transitions, 208 flow [2022-11-25 15:33:25,228 INFO L130 PetriNetUnfolder]: 2/94 cut-off events. [2022-11-25 15:33:25,228 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-25 15:33:25,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103 conditions, 94 events. 2/94 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 28 event pairs, 0 based on Foata normal form. 0/91 useless extension candidates. Maximal degree in co-relation 63. Up to 2 conditions per place. [2022-11-25 15:33:25,233 INFO L82 GeneralOperation]: Start removeDead. Operand has 101 places, 96 transitions, 208 flow [2022-11-25 15:33:25,237 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 90 places, 85 transitions, 182 flow [2022-11-25 15:33:25,241 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 15:33:25,258 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 90 places, 85 transitions, 182 flow [2022-11-25 15:33:25,269 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 90 places, 85 transitions, 182 flow [2022-11-25 15:33:25,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 90 places, 85 transitions, 182 flow [2022-11-25 15:33:25,322 INFO L130 PetriNetUnfolder]: 2/85 cut-off events. [2022-11-25 15:33:25,323 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-25 15:33:25,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94 conditions, 85 events. 2/85 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 27 event pairs, 0 based on Foata normal form. 0/83 useless extension candidates. Maximal degree in co-relation 63. Up to 2 conditions per place. [2022-11-25 15:33:25,324 INFO L119 LiptonReduction]: Number of co-enabled transitions 282 [2022-11-25 15:33:29,429 INFO L134 LiptonReduction]: Checked pairs total: 665 [2022-11-25 15:33:29,429 INFO L136 LiptonReduction]: Total number of compositions: 78 [2022-11-25 15:33:29,447 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 15:33:29,454 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@109ffbb2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 15:33:29,454 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-25 15:33:29,460 INFO L130 PetriNetUnfolder]: 0/13 cut-off events. [2022-11-25 15:33:29,460 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-25 15:33:29,460 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:33:29,461 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:33:29,461 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-25 15:33:29,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:33:29,467 INFO L85 PathProgramCache]: Analyzing trace with hash -1873423758, now seen corresponding path program 1 times [2022-11-25 15:33:29,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:33:29,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843873207] [2022-11-25 15:33:29,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:33:29,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:33:29,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:33:30,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:33:30,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:33:30,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843873207] [2022-11-25 15:33:30,241 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843873207] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:33:30,241 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:33:30,242 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 15:33:30,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402646127] [2022-11-25 15:33:30,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:33:30,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 15:33:30,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:33:30,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 15:33:30,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 15:33:30,356 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 174 [2022-11-25 15:33:30,362 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 14 transitions, 40 flow. Second operand has 5 states, 5 states have (on average 74.8) internal successors, (374), 5 states have internal predecessors, (374), 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) [2022-11-25 15:33:30,362 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:33:30,362 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 174 [2022-11-25 15:33:30,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:33:30,469 INFO L130 PetriNetUnfolder]: 37/89 cut-off events. [2022-11-25 15:33:30,469 INFO L131 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2022-11-25 15:33:30,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 198 conditions, 89 events. 37/89 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 245 event pairs, 8 based on Foata normal form. 1/90 useless extension candidates. Maximal degree in co-relation 152. Up to 51 conditions per place. [2022-11-25 15:33:30,471 INFO L137 encePairwiseOnDemand]: 168/174 looper letters, 21 selfloop transitions, 5 changer transitions 2/28 dead transitions. [2022-11-25 15:33:30,472 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 28 transitions, 133 flow [2022-11-25 15:33:30,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 15:33:30,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 15:33:30,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 389 transitions. [2022-11-25 15:33:30,504 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4471264367816092 [2022-11-25 15:33:30,506 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 389 transitions. [2022-11-25 15:33:30,507 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 389 transitions. [2022-11-25 15:33:30,509 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:33:30,511 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 389 transitions. [2022-11-25 15:33:30,514 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 77.8) internal successors, (389), 5 states have internal predecessors, (389), 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) [2022-11-25 15:33:30,521 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 174.0) internal successors, (1044), 6 states have internal predecessors, (1044), 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) [2022-11-25 15:33:30,521 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 174.0) internal successors, (1044), 6 states have internal predecessors, (1044), 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) [2022-11-25 15:33:30,523 INFO L175 Difference]: Start difference. First operand has 21 places, 14 transitions, 40 flow. Second operand 5 states and 389 transitions. [2022-11-25 15:33:30,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 28 transitions, 133 flow [2022-11-25 15:33:30,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 28 transitions, 119 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-25 15:33:30,528 INFO L231 Difference]: Finished difference. Result has 24 places, 17 transitions, 64 flow [2022-11-25 15:33:30,530 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=64, PETRI_PLACES=24, PETRI_TRANSITIONS=17} [2022-11-25 15:33:30,533 INFO L288 CegarLoopForPetriNet]: 21 programPoint places, 3 predicate places. [2022-11-25 15:33:30,533 INFO L495 AbstractCegarLoop]: Abstraction has has 24 places, 17 transitions, 64 flow [2022-11-25 15:33:30,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 74.8) internal successors, (374), 5 states have internal predecessors, (374), 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) [2022-11-25 15:33:30,534 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:33:30,534 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:33:30,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 15:33:30,534 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-25 15:33:30,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:33:30,535 INFO L85 PathProgramCache]: Analyzing trace with hash 1212991212, now seen corresponding path program 2 times [2022-11-25 15:33:30,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:33:30,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334108354] [2022-11-25 15:33:30,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:33:30,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:33:30,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:33:30,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:33:30,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:33:30,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334108354] [2022-11-25 15:33:30,741 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334108354] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:33:30,742 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:33:30,742 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 15:33:30,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961640610] [2022-11-25 15:33:30,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:33:30,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 15:33:30,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:33:30,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 15:33:30,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 15:33:30,777 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 174 [2022-11-25 15:33:30,778 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 17 transitions, 64 flow. Second operand has 5 states, 5 states have (on average 78.8) internal successors, (394), 5 states have internal predecessors, (394), 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) [2022-11-25 15:33:30,779 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:33:30,779 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 174 [2022-11-25 15:33:30,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:33:30,898 INFO L130 PetriNetUnfolder]: 31/79 cut-off events. [2022-11-25 15:33:30,899 INFO L131 PetriNetUnfolder]: For 35/35 co-relation queries the response was YES. [2022-11-25 15:33:30,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 221 conditions, 79 events. 31/79 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 201 event pairs, 14 based on Foata normal form. 1/80 useless extension candidates. Maximal degree in co-relation 78. Up to 39 conditions per place. [2022-11-25 15:33:30,901 INFO L137 encePairwiseOnDemand]: 169/174 looper letters, 18 selfloop transitions, 4 changer transitions 11/33 dead transitions. [2022-11-25 15:33:30,901 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 33 transitions, 173 flow [2022-11-25 15:33:30,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 15:33:30,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 15:33:30,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 487 transitions. [2022-11-25 15:33:30,905 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4664750957854406 [2022-11-25 15:33:30,905 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 487 transitions. [2022-11-25 15:33:30,906 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 487 transitions. [2022-11-25 15:33:30,906 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:33:30,907 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 487 transitions. [2022-11-25 15:33:30,909 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 81.16666666666667) internal successors, (487), 6 states have internal predecessors, (487), 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) [2022-11-25 15:33:30,914 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 174.0) internal successors, (1218), 7 states have internal predecessors, (1218), 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) [2022-11-25 15:33:30,915 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 174.0) internal successors, (1218), 7 states have internal predecessors, (1218), 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) [2022-11-25 15:33:30,915 INFO L175 Difference]: Start difference. First operand has 24 places, 17 transitions, 64 flow. Second operand 6 states and 487 transitions. [2022-11-25 15:33:30,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 33 transitions, 173 flow [2022-11-25 15:33:30,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 33 transitions, 164 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-11-25 15:33:30,919 INFO L231 Difference]: Finished difference. Result has 30 places, 17 transitions, 74 flow [2022-11-25 15:33:30,919 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=57, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=74, PETRI_PLACES=30, PETRI_TRANSITIONS=17} [2022-11-25 15:33:30,921 INFO L288 CegarLoopForPetriNet]: 21 programPoint places, 9 predicate places. [2022-11-25 15:33:30,921 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 17 transitions, 74 flow [2022-11-25 15:33:30,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 78.8) internal successors, (394), 5 states have internal predecessors, (394), 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) [2022-11-25 15:33:30,922 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:33:30,922 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:33:30,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 15:33:30,922 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-25 15:33:30,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:33:30,923 INFO L85 PathProgramCache]: Analyzing trace with hash -1323318880, now seen corresponding path program 3 times [2022-11-25 15:33:30,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:33:30,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881664133] [2022-11-25 15:33:30,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:33:30,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:33:30,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:33:31,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:33:31,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:33:31,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881664133] [2022-11-25 15:33:31,152 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881664133] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:33:31,152 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:33:31,152 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 15:33:31,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222342314] [2022-11-25 15:33:31,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:33:31,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 15:33:31,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:33:31,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 15:33:31,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-25 15:33:31,201 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 174 [2022-11-25 15:33:31,202 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 17 transitions, 74 flow. Second operand has 6 states, 6 states have (on average 77.33333333333333) internal successors, (464), 6 states have internal predecessors, (464), 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) [2022-11-25 15:33:31,202 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:33:31,202 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 174 [2022-11-25 15:33:31,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:33:31,321 INFO L130 PetriNetUnfolder]: 15/46 cut-off events. [2022-11-25 15:33:31,321 INFO L131 PetriNetUnfolder]: For 43/43 co-relation queries the response was YES. [2022-11-25 15:33:31,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 151 conditions, 46 events. 15/46 cut-off events. For 43/43 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 90 event pairs, 0 based on Foata normal form. 2/48 useless extension candidates. Maximal degree in co-relation 140. Up to 20 conditions per place. [2022-11-25 15:33:31,322 INFO L137 encePairwiseOnDemand]: 170/174 looper letters, 13 selfloop transitions, 2 changer transitions 8/23 dead transitions. [2022-11-25 15:33:31,322 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 23 transitions, 138 flow [2022-11-25 15:33:31,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 15:33:31,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 15:33:31,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 399 transitions. [2022-11-25 15:33:31,324 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4586206896551724 [2022-11-25 15:33:31,324 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 399 transitions. [2022-11-25 15:33:31,324 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 399 transitions. [2022-11-25 15:33:31,325 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:33:31,325 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 399 transitions. [2022-11-25 15:33:31,326 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 79.8) internal successors, (399), 5 states have internal predecessors, (399), 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) [2022-11-25 15:33:31,328 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 174.0) internal successors, (1044), 6 states have internal predecessors, (1044), 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) [2022-11-25 15:33:31,329 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 174.0) internal successors, (1044), 6 states have internal predecessors, (1044), 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) [2022-11-25 15:33:31,329 INFO L175 Difference]: Start difference. First operand has 30 places, 17 transitions, 74 flow. Second operand 5 states and 399 transitions. [2022-11-25 15:33:31,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 23 transitions, 138 flow [2022-11-25 15:33:31,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 23 transitions, 123 flow, removed 2 selfloop flow, removed 6 redundant places. [2022-11-25 15:33:31,331 INFO L231 Difference]: Finished difference. Result has 27 places, 14 transitions, 52 flow [2022-11-25 15:33:31,331 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=52, PETRI_PLACES=27, PETRI_TRANSITIONS=14} [2022-11-25 15:33:31,332 INFO L288 CegarLoopForPetriNet]: 21 programPoint places, 6 predicate places. [2022-11-25 15:33:31,332 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 14 transitions, 52 flow [2022-11-25 15:33:31,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 77.33333333333333) internal successors, (464), 6 states have internal predecessors, (464), 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) [2022-11-25 15:33:31,333 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:33:31,333 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:33:31,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 15:33:31,333 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-25 15:33:31,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:33:31,334 INFO L85 PathProgramCache]: Analyzing trace with hash 848895234, now seen corresponding path program 4 times [2022-11-25 15:33:31,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:33:31,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084461181] [2022-11-25 15:33:31,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:33:31,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:33:31,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:33:31,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:33:31,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:33:31,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084461181] [2022-11-25 15:33:31,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084461181] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:33:31,477 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:33:31,477 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 15:33:31,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000421766] [2022-11-25 15:33:31,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:33:31,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 15:33:31,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:33:31,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 15:33:31,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 15:33:31,500 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 174 [2022-11-25 15:33:31,515 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 14 transitions, 52 flow. Second operand has 5 states, 5 states have (on average 77.8) internal successors, (389), 5 states have internal predecessors, (389), 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) [2022-11-25 15:33:31,515 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:33:31,515 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 174 [2022-11-25 15:33:31,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:33:31,557 INFO L130 PetriNetUnfolder]: 2/11 cut-off events. [2022-11-25 15:33:31,557 INFO L131 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2022-11-25 15:33:31,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41 conditions, 11 events. 2/11 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 8 event pairs, 0 based on Foata normal form. 2/13 useless extension candidates. Maximal degree in co-relation 34. Up to 5 conditions per place. [2022-11-25 15:33:31,558 INFO L137 encePairwiseOnDemand]: 170/174 looper letters, 0 selfloop transitions, 0 changer transitions 9/9 dead transitions. [2022-11-25 15:33:31,558 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 9 transitions, 50 flow [2022-11-25 15:33:31,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 15:33:31,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 15:33:31,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 385 transitions. [2022-11-25 15:33:31,560 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4425287356321839 [2022-11-25 15:33:31,560 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 385 transitions. [2022-11-25 15:33:31,561 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 385 transitions. [2022-11-25 15:33:31,561 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:33:31,561 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 385 transitions. [2022-11-25 15:33:31,562 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 77.0) internal successors, (385), 5 states have internal predecessors, (385), 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) [2022-11-25 15:33:31,564 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 174.0) internal successors, (1044), 6 states have internal predecessors, (1044), 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) [2022-11-25 15:33:31,565 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 174.0) internal successors, (1044), 6 states have internal predecessors, (1044), 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) [2022-11-25 15:33:31,566 INFO L175 Difference]: Start difference. First operand has 27 places, 14 transitions, 52 flow. Second operand 5 states and 385 transitions. [2022-11-25 15:33:31,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 9 transitions, 50 flow [2022-11-25 15:33:31,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 9 transitions, 43 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-25 15:33:31,567 INFO L231 Difference]: Finished difference. Result has 18 places, 0 transitions, 0 flow [2022-11-25 15:33:31,567 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=21, PETRI_DIFFERENCE_MINUEND_PLACES=14, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=7, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=18, PETRI_TRANSITIONS=0} [2022-11-25 15:33:31,568 INFO L288 CegarLoopForPetriNet]: 21 programPoint places, -3 predicate places. [2022-11-25 15:33:31,568 INFO L495 AbstractCegarLoop]: Abstraction has has 18 places, 0 transitions, 0 flow [2022-11-25 15:33:31,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 77.8) internal successors, (389), 5 states have internal predecessors, (389), 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) [2022-11-25 15:33:31,571 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-11-25 15:33:31,572 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2022-11-25 15:33:31,572 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2022-11-25 15:33:31,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 15:33:31,573 INFO L445 BasicCegarLoop]: Path program histogram: [4] [2022-11-25 15:33:31,576 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-25 15:33:31,576 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-25 15:33:31,580 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 03:33:31 BasicIcfg [2022-11-25 15:33:31,580 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-25 15:33:31,581 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 15:33:31,581 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 15:33:31,581 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 15:33:31,582 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 03:33:25" (3/4) ... [2022-11-25 15:33:31,585 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-25 15:33:31,590 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-11-25 15:33:31,591 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-11-25 15:33:31,595 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2022-11-25 15:33:31,595 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-25 15:33:31,596 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-25 15:33:31,596 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-25 15:33:31,631 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bece83f-1375-4cdc-88dc-8bc0e1de60c4/bin/uautomizer-ZsLfNo2U6R/witness.graphml [2022-11-25 15:33:31,632 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 15:33:31,632 INFO L158 Benchmark]: Toolchain (without parser) took 7656.80ms. Allocated memory was 138.4MB in the beginning and 234.9MB in the end (delta: 96.5MB). Free memory was 71.6MB in the beginning and 116.4MB in the end (delta: -44.8MB). Peak memory consumption was 52.8MB. Max. memory is 16.1GB. [2022-11-25 15:33:31,633 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 138.4MB. Free memory was 111.5MB in the beginning and 111.4MB in the end (delta: 147.1kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 15:33:31,633 INFO L158 Benchmark]: CACSL2BoogieTranslator took 297.67ms. Allocated memory was 138.4MB in the beginning and 195.0MB in the end (delta: 56.6MB). Free memory was 71.4MB in the beginning and 159.7MB in the end (delta: -88.2MB). Peak memory consumption was 11.9MB. Max. memory is 16.1GB. [2022-11-25 15:33:31,634 INFO L158 Benchmark]: Boogie Procedure Inliner took 56.34ms. Allocated memory is still 195.0MB. Free memory was 159.7MB in the beginning and 157.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 15:33:31,634 INFO L158 Benchmark]: Boogie Preprocessor took 24.57ms. Allocated memory is still 195.0MB. Free memory was 157.6MB in the beginning and 156.4MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 15:33:31,635 INFO L158 Benchmark]: RCFGBuilder took 691.66ms. Allocated memory is still 195.0MB. Free memory was 156.4MB in the beginning and 155.5MB in the end (delta: 817.3kB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-25 15:33:31,635 INFO L158 Benchmark]: TraceAbstraction took 6528.92ms. Allocated memory was 195.0MB in the beginning and 234.9MB in the end (delta: 39.8MB). Free memory was 154.5MB in the beginning and 119.6MB in the end (delta: 35.0MB). Peak memory consumption was 76.9MB. Max. memory is 16.1GB. [2022-11-25 15:33:31,636 INFO L158 Benchmark]: Witness Printer took 50.89ms. Allocated memory is still 234.9MB. Free memory was 119.6MB in the beginning and 116.4MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 15:33:31,639 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 138.4MB. Free memory was 111.5MB in the beginning and 111.4MB in the end (delta: 147.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 297.67ms. Allocated memory was 138.4MB in the beginning and 195.0MB in the end (delta: 56.6MB). Free memory was 71.4MB in the beginning and 159.7MB in the end (delta: -88.2MB). Peak memory consumption was 11.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 56.34ms. Allocated memory is still 195.0MB. Free memory was 159.7MB in the beginning and 157.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 24.57ms. Allocated memory is still 195.0MB. Free memory was 157.6MB in the beginning and 156.4MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 691.66ms. Allocated memory is still 195.0MB. Free memory was 156.4MB in the beginning and 155.5MB in the end (delta: 817.3kB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 6528.92ms. Allocated memory was 195.0MB in the beginning and 234.9MB in the end (delta: 39.8MB). Free memory was 154.5MB in the beginning and 119.6MB in the end (delta: 35.0MB). Peak memory consumption was 76.9MB. Max. memory is 16.1GB. * Witness Printer took 50.89ms. Allocated memory is still 234.9MB. Free memory was 119.6MB in the beginning and 116.4MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.2s, 90 PlacesBefore, 21 PlacesAfterwards, 85 TransitionsBefore, 14 TransitionsAfterwards, 282 CoEnabledTransitionPairs, 7 FixpointIterations, 55 TrivialSequentialCompositions, 15 ConcurrentSequentialCompositions, 6 TrivialYvCompositions, 0 ConcurrentYvCompositions, 2 ChoiceCompositions, 78 TotalNumberOfCompositions, 665 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 480, independent: 422, independent conditional: 0, independent unconditional: 422, dependent: 58, dependent conditional: 0, dependent unconditional: 58, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 222, independent: 207, independent conditional: 0, independent unconditional: 207, dependent: 15, dependent conditional: 0, dependent unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 222, independent: 202, independent conditional: 0, independent unconditional: 202, dependent: 20, dependent conditional: 0, dependent unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 20, independent: 5, independent conditional: 0, independent unconditional: 5, dependent: 15, dependent conditional: 0, dependent unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 97, independent: 19, independent conditional: 0, independent unconditional: 19, dependent: 78, dependent conditional: 0, dependent unconditional: 78, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 480, independent: 215, independent conditional: 0, independent unconditional: 215, dependent: 43, dependent conditional: 0, dependent unconditional: 43, unknown: 222, unknown conditional: 0, unknown unconditional: 222] , Statistics on independence cache: Total cache size (in pairs): 33, Positive cache size: 27, Positive conditional cache size: 0, Positive unconditional cache size: 27, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 102]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 112 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: 6.4s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 108 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 73 mSDsluCounter, 30 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 30 mSDsCounter, 19 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 329 IncrementalHoareTripleChecker+Invalid, 348 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 19 mSolverCounterUnsat, 0 mSDtfsCounter, 329 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=74occurred in iteration=2, InterpolantAutomatonStates: 21, 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, 1.1s InterpolantComputationTime, 56 NumberOfCodeBlocks, 56 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 52 ConstructedInterpolants, 0 QuantifiedInterpolants, 335 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-25 15:33:31,664 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bece83f-1375-4cdc-88dc-8bc0e1de60c4/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE