./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f 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_88600e84-cbe1-46d7-ba4d-f61b6a01d1f1/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88600e84-cbe1-46d7-ba4d-f61b6a01d1f1/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88600e84-cbe1-46d7-ba4d-f61b6a01d1f1/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88600e84-cbe1-46d7-ba4d-f61b6a01d1f1/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88600e84-cbe1-46d7-ba4d-f61b6a01d1f1/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88600e84-cbe1-46d7-ba4d-f61b6a01d1f1/bin/uautomizer-tPACEb0tL8 --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 6aeaf730cbe4eb831d189bfd9925d1660c7714b9e685f389bc2495c0943d6472 --- 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-e04fb08 [2022-11-16 12:49:01,183 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:49:01,186 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:49:01,232 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:49:01,234 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:49:01,236 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:49:01,239 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:49:01,243 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:49:01,247 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:49:01,249 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:49:01,250 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:49:01,254 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:49:01,254 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:49:01,260 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:49:01,262 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:49:01,264 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:49:01,266 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:49:01,268 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:49:01,270 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:49:01,274 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:49:01,279 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:49:01,280 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:49:01,283 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:49:01,285 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:49:01,291 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:49:01,296 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:49:01,297 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:49:01,298 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:49:01,303 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:49:01,304 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:49:01,306 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:49:01,307 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:49:01,309 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:49:01,311 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:49:01,312 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:49:01,313 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:49:01,314 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:49:01,314 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:49:01,314 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:49:01,315 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:49:01,316 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:49:01,317 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88600e84-cbe1-46d7-ba4d-f61b6a01d1f1/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-16 12:49:01,364 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:49:01,364 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:49:01,365 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:49:01,365 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:49:01,366 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:49:01,366 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:49:01,367 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:49:01,367 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:49:01,368 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:49:01,368 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:49:01,369 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:49:01,369 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:49:01,370 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:49:01,370 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:49:01,370 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:49:01,370 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:49:01,371 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:49:01,371 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:49:01,371 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:49:01,371 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:49:01,372 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:49:01,372 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:49:01,372 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:49:01,372 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:49:01,373 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:49:01,373 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:49:01,373 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:49:01,373 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:49:01,374 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:49:01,374 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:49:01,374 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:49:01,374 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:49:01,375 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:49:01,375 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_88600e84-cbe1-46d7-ba4d-f61b6a01d1f1/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88600e84-cbe1-46d7-ba4d-f61b6a01d1f1/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6aeaf730cbe4eb831d189bfd9925d1660c7714b9e685f389bc2495c0943d6472 [2022-11-16 12:49:01,741 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:49:01,769 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:49:01,772 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:49:01,774 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:49:01,775 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:49:01,776 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88600e84-cbe1-46d7-ba4d-f61b6a01d1f1/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i [2022-11-16 12:49:01,851 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88600e84-cbe1-46d7-ba4d-f61b6a01d1f1/bin/uautomizer-tPACEb0tL8/data/bd9af5d1e/313e8240c1a44f789570a70db78e7e51/FLAGc3b75c385 [2022-11-16 12:49:02,340 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:49:02,341 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88600e84-cbe1-46d7-ba4d-f61b6a01d1f1/sv-benchmarks/c/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i [2022-11-16 12:49:02,358 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88600e84-cbe1-46d7-ba4d-f61b6a01d1f1/bin/uautomizer-tPACEb0tL8/data/bd9af5d1e/313e8240c1a44f789570a70db78e7e51/FLAGc3b75c385 [2022-11-16 12:49:02,674 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88600e84-cbe1-46d7-ba4d-f61b6a01d1f1/bin/uautomizer-tPACEb0tL8/data/bd9af5d1e/313e8240c1a44f789570a70db78e7e51 [2022-11-16 12:49:02,677 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:49:02,679 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:49:02,681 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:49:02,681 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:49:02,685 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:49:02,686 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:49:02" (1/1) ... [2022-11-16 12:49:02,688 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@393a14d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:49:02, skipping insertion in model container [2022-11-16 12:49:02,688 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:49:02" (1/1) ... [2022-11-16 12:49:02,697 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:49:02,766 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:49:02,990 WARN L229 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_88600e84-cbe1-46d7-ba4d-f61b6a01d1f1/sv-benchmarks/c/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i[1115,1128] [2022-11-16 12:49:03,226 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:49:03,241 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:49:03,258 WARN L229 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_88600e84-cbe1-46d7-ba4d-f61b6a01d1f1/sv-benchmarks/c/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i[1115,1128] [2022-11-16 12:49:03,313 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:49:03,356 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:49:03,356 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:49:03 WrapperNode [2022-11-16 12:49:03,356 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:49:03,357 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:49:03,357 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:49:03,358 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:49:03,366 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:49:03" (1/1) ... [2022-11-16 12:49:03,391 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:49:03" (1/1) ... [2022-11-16 12:49:03,420 INFO L138 Inliner]: procedures = 165, calls = 35, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 118 [2022-11-16 12:49:03,421 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:49:03,421 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:49:03,421 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:49:03,422 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:49:03,432 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:49:03" (1/1) ... [2022-11-16 12:49:03,432 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:49:03" (1/1) ... [2022-11-16 12:49:03,436 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:49:03" (1/1) ... [2022-11-16 12:49:03,436 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:49:03" (1/1) ... [2022-11-16 12:49:03,443 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:49:03" (1/1) ... [2022-11-16 12:49:03,447 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:49:03" (1/1) ... [2022-11-16 12:49:03,449 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:49:03" (1/1) ... [2022-11-16 12:49:03,451 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:49:03" (1/1) ... [2022-11-16 12:49:03,460 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:49:03,461 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:49:03,461 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:49:03,461 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:49:03,462 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:49:03" (1/1) ... [2022-11-16 12:49:03,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:49:03,492 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88600e84-cbe1-46d7-ba4d-f61b6a01d1f1/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:49:03,504 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88600e84-cbe1-46d7-ba4d-f61b6a01d1f1/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:49:03,506 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88600e84-cbe1-46d7-ba4d-f61b6a01d1f1/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:49:03,563 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 12:49:03,563 INFO L130 BoogieDeclarations]: Found specification of procedure worker [2022-11-16 12:49:03,564 INFO L138 BoogieDeclarations]: Found implementation of procedure worker [2022-11-16 12:49:03,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 12:49:03,565 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-16 12:49:03,565 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:49:03,565 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 12:49:03,570 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 12:49:03,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 12:49:03,571 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:49:03,571 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:49:03,574 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 12:49:03,813 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:49:03,815 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:49:04,166 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:49:04,176 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:49:04,178 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-16 12:49:04,182 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:49:04 BoogieIcfgContainer [2022-11-16 12:49:04,182 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:49:04,185 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:49:04,185 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:49:04,189 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:49:04,190 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:49:02" (1/3) ... [2022-11-16 12:49:04,190 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c8aede4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:49:04, skipping insertion in model container [2022-11-16 12:49:04,191 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:49:03" (2/3) ... [2022-11-16 12:49:04,191 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c8aede4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:49:04, skipping insertion in model container [2022-11-16 12:49:04,191 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:49:04" (3/3) ... [2022-11-16 12:49:04,193 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_68-pfscan_protected_loop_minimal_interval_true.i [2022-11-16 12:49:04,203 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 12:49:04,214 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:49:04,214 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-16 12:49:04,215 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 12:49:04,286 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-16 12:49:04,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 136 places, 142 transitions, 289 flow [2022-11-16 12:49:04,383 INFO L130 PetriNetUnfolder]: 10/141 cut-off events. [2022-11-16 12:49:04,383 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 12:49:04,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 145 conditions, 141 events. 10/141 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 226 event pairs, 0 based on Foata normal form. 0/129 useless extension candidates. Maximal degree in co-relation 100. Up to 2 conditions per place. [2022-11-16 12:49:04,394 INFO L82 GeneralOperation]: Start removeDead. Operand has 136 places, 142 transitions, 289 flow [2022-11-16 12:49:04,398 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 135 places, 141 transitions, 285 flow [2022-11-16 12:49:04,409 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:49:04,415 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;@52a0acaa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:49:04,416 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-11-16 12:49:04,441 INFO L130 PetriNetUnfolder]: 4/106 cut-off events. [2022-11-16 12:49:04,441 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 12:49:04,442 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:49:04,442 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:49:04,443 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting workerErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-16 12:49:04,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:49:04,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1865521660, now seen corresponding path program 1 times [2022-11-16 12:49:04,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:49:04,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156975319] [2022-11-16 12:49:04,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:49:04,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:49:04,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:49:04,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:49:04,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:49:04,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156975319] [2022-11-16 12:49:04,817 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156975319] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:49:04,817 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:49:04,818 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:49:04,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315338608] [2022-11-16 12:49:04,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:49:04,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 12:49:04,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:49:04,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 12:49:04,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 12:49:04,864 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 142 [2022-11-16 12:49:04,867 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 141 transitions, 285 flow. Second operand has 2 states, 2 states have (on average 134.0) internal successors, (268), 2 states have internal predecessors, (268), 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) [2022-11-16 12:49:04,868 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:49:04,868 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 142 [2022-11-16 12:49:04,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:49:04,926 INFO L130 PetriNetUnfolder]: 5/131 cut-off events. [2022-11-16 12:49:04,926 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-16 12:49:04,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137 conditions, 131 events. 5/131 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 182 event pairs, 0 based on Foata normal form. 5/130 useless extension candidates. Maximal degree in co-relation 90. Up to 2 conditions per place. [2022-11-16 12:49:04,933 INFO L137 encePairwiseOnDemand]: 136/142 looper letters, 1 selfloop transitions, 0 changer transitions 0/131 dead transitions. [2022-11-16 12:49:04,933 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 131 transitions, 267 flow [2022-11-16 12:49:04,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 12:49:04,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-16 12:49:04,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 273 transitions. [2022-11-16 12:49:04,955 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9612676056338029 [2022-11-16 12:49:04,955 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 273 transitions. [2022-11-16 12:49:04,956 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 273 transitions. [2022-11-16 12:49:04,960 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:49:04,963 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 273 transitions. [2022-11-16 12:49:04,971 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 136.5) internal successors, (273), 2 states have internal predecessors, (273), 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) [2022-11-16 12:49:04,976 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 142.0) internal successors, (426), 3 states have internal predecessors, (426), 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) [2022-11-16 12:49:04,977 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 142.0) internal successors, (426), 3 states have internal predecessors, (426), 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) [2022-11-16 12:49:04,979 INFO L175 Difference]: Start difference. First operand has 135 places, 141 transitions, 285 flow. Second operand 2 states and 273 transitions. [2022-11-16 12:49:04,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 131 transitions, 267 flow [2022-11-16 12:49:04,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 131 transitions, 266 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:49:04,987 INFO L231 Difference]: Finished difference. Result has 130 places, 131 transitions, 264 flow [2022-11-16 12:49:04,989 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=264, PETRI_PLACES=130, PETRI_TRANSITIONS=131} [2022-11-16 12:49:04,995 INFO L288 CegarLoopForPetriNet]: 135 programPoint places, -5 predicate places. [2022-11-16 12:49:04,995 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 131 transitions, 264 flow [2022-11-16 12:49:04,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 134.0) internal successors, (268), 2 states have internal predecessors, (268), 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) [2022-11-16 12:49:04,996 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:49:04,997 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:49:04,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 12:49:04,998 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting workerErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-16 12:49:05,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:49:05,000 INFO L85 PathProgramCache]: Analyzing trace with hash 326788120, now seen corresponding path program 1 times [2022-11-16 12:49:05,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:49:05,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106611424] [2022-11-16 12:49:05,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:49:05,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:49:05,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:49:05,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:49:05,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:49:05,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106611424] [2022-11-16 12:49:05,417 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106611424] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:49:05,417 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:49:05,417 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:49:05,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943103258] [2022-11-16 12:49:05,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:49:05,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:49:05,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:49:05,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:49:05,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:49:05,423 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 142 [2022-11-16 12:49:05,424 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 131 transitions, 264 flow. Second operand has 7 states, 7 states have (on average 97.14285714285714) internal successors, (680), 7 states have internal predecessors, (680), 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) [2022-11-16 12:49:05,424 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:49:05,424 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 142 [2022-11-16 12:49:05,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:49:06,196 INFO L130 PetriNetUnfolder]: 313/1626 cut-off events. [2022-11-16 12:49:06,196 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 12:49:06,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2226 conditions, 1626 events. 313/1626 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 12238 event pairs, 43 based on Foata normal form. 0/1523 useless extension candidates. Maximal degree in co-relation 2223. Up to 143 conditions per place. [2022-11-16 12:49:06,219 INFO L137 encePairwiseOnDemand]: 125/142 looper letters, 118 selfloop transitions, 46 changer transitions 0/255 dead transitions. [2022-11-16 12:49:06,219 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 255 transitions, 840 flow [2022-11-16 12:49:06,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-16 12:49:06,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-16 12:49:06,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2140 transitions. [2022-11-16 12:49:06,227 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7176391683433937 [2022-11-16 12:49:06,228 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2140 transitions. [2022-11-16 12:49:06,228 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2140 transitions. [2022-11-16 12:49:06,230 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:49:06,230 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2140 transitions. [2022-11-16 12:49:06,236 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 101.9047619047619) internal successors, (2140), 21 states have internal predecessors, (2140), 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) [2022-11-16 12:49:06,245 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 142.0) internal successors, (3124), 22 states have internal predecessors, (3124), 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) [2022-11-16 12:49:06,248 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 142.0) internal successors, (3124), 22 states have internal predecessors, (3124), 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) [2022-11-16 12:49:06,248 INFO L175 Difference]: Start difference. First operand has 130 places, 131 transitions, 264 flow. Second operand 21 states and 2140 transitions. [2022-11-16 12:49:06,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 255 transitions, 840 flow [2022-11-16 12:49:06,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 255 transitions, 840 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 12:49:06,258 INFO L231 Difference]: Finished difference. Result has 164 places, 184 transitions, 606 flow [2022-11-16 12:49:06,259 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=606, PETRI_PLACES=164, PETRI_TRANSITIONS=184} [2022-11-16 12:49:06,260 INFO L288 CegarLoopForPetriNet]: 135 programPoint places, 29 predicate places. [2022-11-16 12:49:06,260 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 184 transitions, 606 flow [2022-11-16 12:49:06,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 97.14285714285714) internal successors, (680), 7 states have internal predecessors, (680), 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) [2022-11-16 12:49:06,261 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:49:06,261 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:49:06,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 12:49:06,261 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-16 12:49:06,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:49:06,265 INFO L85 PathProgramCache]: Analyzing trace with hash -1938685600, now seen corresponding path program 1 times [2022-11-16 12:49:06,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:49:06,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466866539] [2022-11-16 12:49:06,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:49:06,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:49:06,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:49:07,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:49:07,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:49:07,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466866539] [2022-11-16 12:49:07,073 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466866539] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:49:07,074 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:49:07,074 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-16 12:49:07,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510741404] [2022-11-16 12:49:07,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:49:07,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-16 12:49:07,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:49:07,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-16 12:49:07,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2022-11-16 12:49:07,080 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 142 [2022-11-16 12:49:07,083 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 184 transitions, 606 flow. Second operand has 15 states, 15 states have (on average 84.2) internal successors, (1263), 15 states have internal predecessors, (1263), 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) [2022-11-16 12:49:07,083 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:49:07,083 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 142 [2022-11-16 12:49:07,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:49:09,487 INFO L130 PetriNetUnfolder]: 1010/3868 cut-off events. [2022-11-16 12:49:09,488 INFO L131 PetriNetUnfolder]: For 1104/1104 co-relation queries the response was YES. [2022-11-16 12:49:09,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6890 conditions, 3868 events. 1010/3868 cut-off events. For 1104/1104 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 33768 event pairs, 164 based on Foata normal form. 12/3635 useless extension candidates. Maximal degree in co-relation 6873. Up to 625 conditions per place. [2022-11-16 12:49:09,516 INFO L137 encePairwiseOnDemand]: 120/142 looper letters, 264 selfloop transitions, 112 changer transitions 0/466 dead transitions. [2022-11-16 12:49:09,516 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 466 transitions, 2384 flow [2022-11-16 12:49:09,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-11-16 12:49:09,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2022-11-16 12:49:09,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 3493 transitions. [2022-11-16 12:49:09,524 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6307331166486096 [2022-11-16 12:49:09,525 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 3493 transitions. [2022-11-16 12:49:09,525 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 3493 transitions. [2022-11-16 12:49:09,527 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:49:09,527 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 3493 transitions. [2022-11-16 12:49:09,535 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 89.56410256410257) internal successors, (3493), 39 states have internal predecessors, (3493), 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) [2022-11-16 12:49:09,545 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 142.0) internal successors, (5680), 40 states have internal predecessors, (5680), 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) [2022-11-16 12:49:09,548 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 142.0) internal successors, (5680), 40 states have internal predecessors, (5680), 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) [2022-11-16 12:49:09,548 INFO L175 Difference]: Start difference. First operand has 164 places, 184 transitions, 606 flow. Second operand 39 states and 3493 transitions. [2022-11-16 12:49:09,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 466 transitions, 2384 flow [2022-11-16 12:49:09,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 466 transitions, 2384 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 12:49:09,568 INFO L231 Difference]: Finished difference. Result has 226 places, 291 transitions, 1530 flow [2022-11-16 12:49:09,568 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=606, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=1530, PETRI_PLACES=226, PETRI_TRANSITIONS=291} [2022-11-16 12:49:09,569 INFO L288 CegarLoopForPetriNet]: 135 programPoint places, 91 predicate places. [2022-11-16 12:49:09,569 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 291 transitions, 1530 flow [2022-11-16 12:49:09,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 84.2) internal successors, (1263), 15 states have internal predecessors, (1263), 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) [2022-11-16 12:49:09,570 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:49:09,570 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:49:09,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 12:49:09,571 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting workerErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-16 12:49:09,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:49:09,571 INFO L85 PathProgramCache]: Analyzing trace with hash -1702516615, now seen corresponding path program 1 times [2022-11-16 12:49:09,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:49:09,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643295594] [2022-11-16 12:49:09,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:49:09,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:49:09,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:49:10,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:49:10,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:49:10,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643295594] [2022-11-16 12:49:10,327 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643295594] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:49:10,327 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:49:10,327 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-16 12:49:10,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253289657] [2022-11-16 12:49:10,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:49:10,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-16 12:49:10,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:49:10,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-16 12:49:10,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2022-11-16 12:49:10,331 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 142 [2022-11-16 12:49:10,333 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 291 transitions, 1530 flow. Second operand has 15 states, 15 states have (on average 80.4) internal successors, (1206), 15 states have internal predecessors, (1206), 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) [2022-11-16 12:49:10,333 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:49:10,333 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 142 [2022-11-16 12:49:10,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:49:26,533 INFO L130 PetriNetUnfolder]: 13737/40047 cut-off events. [2022-11-16 12:49:26,533 INFO L131 PetriNetUnfolder]: For 50721/50981 co-relation queries the response was YES. [2022-11-16 12:49:26,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96820 conditions, 40047 events. 13737/40047 cut-off events. For 50721/50981 co-relation queries the response was YES. Maximal size of possible extension queue 681. Compared 450099 event pairs, 894 based on Foata normal form. 48/38287 useless extension candidates. Maximal degree in co-relation 96778. Up to 3237 conditions per place. [2022-11-16 12:49:27,014 INFO L137 encePairwiseOnDemand]: 112/142 looper letters, 1591 selfloop transitions, 1186 changer transitions 0/2873 dead transitions. [2022-11-16 12:49:27,014 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 2873 transitions, 23018 flow [2022-11-16 12:49:27,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2022-11-16 12:49:27,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2022-11-16 12:49:27,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 11803 transitions. [2022-11-16 12:49:27,042 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6157016171100678 [2022-11-16 12:49:27,042 INFO L72 ComplementDD]: Start complementDD. Operand 135 states and 11803 transitions. [2022-11-16 12:49:27,043 INFO L73 IsDeterministic]: Start isDeterministic. Operand 135 states and 11803 transitions. [2022-11-16 12:49:27,051 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:49:27,052 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 135 states and 11803 transitions. [2022-11-16 12:49:27,081 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 136 states, 135 states have (on average 87.42962962962963) internal successors, (11803), 135 states have internal predecessors, (11803), 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) [2022-11-16 12:49:27,115 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 136 states, 136 states have (on average 142.0) internal successors, (19312), 136 states have internal predecessors, (19312), 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) [2022-11-16 12:49:27,125 INFO L81 ComplementDD]: Finished complementDD. Result has 136 states, 136 states have (on average 142.0) internal successors, (19312), 136 states have internal predecessors, (19312), 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) [2022-11-16 12:49:27,126 INFO L175 Difference]: Start difference. First operand has 226 places, 291 transitions, 1530 flow. Second operand 135 states and 11803 transitions. [2022-11-16 12:49:27,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 2873 transitions, 23018 flow [2022-11-16 12:49:28,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 2873 transitions, 22853 flow, removed 79 selfloop flow, removed 4 redundant places. [2022-11-16 12:49:28,085 INFO L231 Difference]: Finished difference. Result has 479 places, 1647 transitions, 16316 flow [2022-11-16 12:49:28,086 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=1493, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=135, PETRI_FLOW=16316, PETRI_PLACES=479, PETRI_TRANSITIONS=1647} [2022-11-16 12:49:28,088 INFO L288 CegarLoopForPetriNet]: 135 programPoint places, 344 predicate places. [2022-11-16 12:49:28,088 INFO L495 AbstractCegarLoop]: Abstraction has has 479 places, 1647 transitions, 16316 flow [2022-11-16 12:49:28,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 80.4) internal successors, (1206), 15 states have internal predecessors, (1206), 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) [2022-11-16 12:49:28,100 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:49:28,109 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:49:28,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 12:49:28,110 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting workerErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-16 12:49:28,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:49:28,110 INFO L85 PathProgramCache]: Analyzing trace with hash -233606861, now seen corresponding path program 2 times [2022-11-16 12:49:28,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:49:28,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312861511] [2022-11-16 12:49:28,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:49:28,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:49:28,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:49:28,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:49:28,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:49:28,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312861511] [2022-11-16 12:49:28,791 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312861511] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:49:28,791 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:49:28,791 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-16 12:49:28,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193443998] [2022-11-16 12:49:28,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:49:28,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-16 12:49:28,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:49:28,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-16 12:49:28,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2022-11-16 12:49:28,794 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 142 [2022-11-16 12:49:28,796 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 479 places, 1647 transitions, 16316 flow. Second operand has 15 states, 15 states have (on average 80.4) internal successors, (1206), 15 states have internal predecessors, (1206), 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) [2022-11-16 12:49:28,796 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:49:28,796 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 142 [2022-11-16 12:49:28,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:50:07,719 INFO L130 PetriNetUnfolder]: 21762/62691 cut-off events. [2022-11-16 12:50:07,719 INFO L131 PetriNetUnfolder]: For 1090142/1090791 co-relation queries the response was YES. [2022-11-16 12:50:09,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 302063 conditions, 62691 events. 21762/62691 cut-off events. For 1090142/1090791 co-relation queries the response was YES. Maximal size of possible extension queue 894. Compared 718867 event pairs, 2170 based on Foata normal form. 359/61623 useless extension candidates. Maximal degree in co-relation 301899. Up to 6667 conditions per place. [2022-11-16 12:50:09,782 INFO L137 encePairwiseOnDemand]: 113/142 looper letters, 2753 selfloop transitions, 2255 changer transitions 0/5104 dead transitions. [2022-11-16 12:50:09,782 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 577 places, 5104 transitions, 57119 flow [2022-11-16 12:50:09,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2022-11-16 12:50:09,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2022-11-16 12:50:09,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 8618 transitions. [2022-11-16 12:50:09,809 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6130317257077821 [2022-11-16 12:50:09,809 INFO L72 ComplementDD]: Start complementDD. Operand 99 states and 8618 transitions. [2022-11-16 12:50:09,809 INFO L73 IsDeterministic]: Start isDeterministic. Operand 99 states and 8618 transitions. [2022-11-16 12:50:09,815 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:50:09,815 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 99 states and 8618 transitions. [2022-11-16 12:50:09,836 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 100 states, 99 states have (on average 87.05050505050505) internal successors, (8618), 99 states have internal predecessors, (8618), 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) [2022-11-16 12:50:09,859 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 100 states, 100 states have (on average 142.0) internal successors, (14200), 100 states have internal predecessors, (14200), 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) [2022-11-16 12:50:09,864 INFO L81 ComplementDD]: Finished complementDD. Result has 100 states, 100 states have (on average 142.0) internal successors, (14200), 100 states have internal predecessors, (14200), 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) [2022-11-16 12:50:09,865 INFO L175 Difference]: Start difference. First operand has 479 places, 1647 transitions, 16316 flow. Second operand 99 states and 8618 transitions. [2022-11-16 12:50:09,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 577 places, 5104 transitions, 57119 flow