./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_90-arrayloop2_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb2cc369-747a-4d8b-861f-065dd6473ff3/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb2cc369-747a-4d8b-861f-065dd6473ff3/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb2cc369-747a-4d8b-861f-065dd6473ff3/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb2cc369-747a-4d8b-861f-065dd6473ff3/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_90-arrayloop2_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb2cc369-747a-4d8b-861f-065dd6473ff3/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb2cc369-747a-4d8b-861f-065dd6473ff3/bin/uautomizer-verify-BQ2R08f2Ya --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f41f3c018db74ffccd5759d166eb9816a1bf73b1747e3e539ecb5bf51feb56af --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 01:51:44,490 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 01:51:44,573 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb2cc369-747a-4d8b-861f-065dd6473ff3/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 01:51:44,578 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 01:51:44,578 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 01:51:44,604 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 01:51:44,605 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 01:51:44,605 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 01:51:44,606 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 01:51:44,606 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 01:51:44,607 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 01:51:44,607 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 01:51:44,608 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 01:51:44,609 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 01:51:44,609 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 01:51:44,610 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 01:51:44,610 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 01:51:44,611 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 01:51:44,611 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 01:51:44,612 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 01:51:44,612 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 01:51:44,613 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 01:51:44,613 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 01:51:44,614 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 01:51:44,614 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 01:51:44,614 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 01:51:44,615 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 01:51:44,615 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 01:51:44,616 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 01:51:44,616 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 01:51:44,617 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 01:51:44,617 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:51:44,617 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 01:51:44,618 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 01:51:44,618 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 01:51:44,619 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 01:51:44,619 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 01:51:44,619 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 01:51:44,619 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 01:51:44,620 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 01:51:44,620 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 01:51:44,620 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 01:51:44,621 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb2cc369-747a-4d8b-861f-065dd6473ff3/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb2cc369-747a-4d8b-861f-065dd6473ff3/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f41f3c018db74ffccd5759d166eb9816a1bf73b1747e3e539ecb5bf51feb56af [2023-11-29 01:51:44,858 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 01:51:44,900 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 01:51:44,903 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 01:51:44,904 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 01:51:44,904 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 01:51:44,906 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb2cc369-747a-4d8b-861f-065dd6473ff3/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/goblint-regression/28-race_reach_90-arrayloop2_racing.i [2023-11-29 01:51:47,612 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 01:51:47,881 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 01:51:47,881 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb2cc369-747a-4d8b-861f-065dd6473ff3/sv-benchmarks/c/goblint-regression/28-race_reach_90-arrayloop2_racing.i [2023-11-29 01:51:47,899 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb2cc369-747a-4d8b-861f-065dd6473ff3/bin/uautomizer-verify-BQ2R08f2Ya/data/598465f97/f4e2a961bdbb48a5881bc62d4dd82043/FLAGfd8370c41 [2023-11-29 01:51:47,915 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb2cc369-747a-4d8b-861f-065dd6473ff3/bin/uautomizer-verify-BQ2R08f2Ya/data/598465f97/f4e2a961bdbb48a5881bc62d4dd82043 [2023-11-29 01:51:47,918 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 01:51:47,919 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 01:51:47,921 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 01:51:47,921 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 01:51:47,926 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 01:51:47,927 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:51:47" (1/1) ... [2023-11-29 01:51:47,927 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7cf1d4d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:51:47, skipping insertion in model container [2023-11-29 01:51:47,928 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:51:47" (1/1) ... [2023-11-29 01:51:47,978 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 01:51:48,363 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb2cc369-747a-4d8b-861f-065dd6473ff3/sv-benchmarks/c/goblint-regression/28-race_reach_90-arrayloop2_racing.i[47038,47051] [2023-11-29 01:51:48,375 WARN L1590 CHandler]: Possible shadowing of function new [2023-11-29 01:51:48,376 WARN L1590 CHandler]: Possible shadowing of function new [2023-11-29 01:51:48,376 WARN L1590 CHandler]: Possible shadowing of function new [2023-11-29 01:51:48,377 WARN L1590 CHandler]: Possible shadowing of function new [2023-11-29 01:51:48,407 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:51:48,427 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 01:51:48,468 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb2cc369-747a-4d8b-861f-065dd6473ff3/sv-benchmarks/c/goblint-regression/28-race_reach_90-arrayloop2_racing.i[47038,47051] [2023-11-29 01:51:48,472 WARN L1590 CHandler]: Possible shadowing of function new [2023-11-29 01:51:48,472 WARN L1590 CHandler]: Possible shadowing of function new [2023-11-29 01:51:48,472 WARN L1590 CHandler]: Possible shadowing of function new [2023-11-29 01:51:48,473 WARN L1590 CHandler]: Possible shadowing of function new [2023-11-29 01:51:48,491 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:51:48,544 INFO L206 MainTranslator]: Completed translation [2023-11-29 01:51:48,545 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:51:48 WrapperNode [2023-11-29 01:51:48,545 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 01:51:48,546 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 01:51:48,546 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 01:51:48,546 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 01:51:48,551 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:51:48" (1/1) ... [2023-11-29 01:51:48,573 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:51:48" (1/1) ... [2023-11-29 01:51:48,603 INFO L138 Inliner]: procedures = 279, calls = 72, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 333 [2023-11-29 01:51:48,604 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 01:51:48,604 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 01:51:48,604 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 01:51:48,605 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 01:51:48,613 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:51:48" (1/1) ... [2023-11-29 01:51:48,613 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:51:48" (1/1) ... [2023-11-29 01:51:48,620 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:51:48" (1/1) ... [2023-11-29 01:51:48,645 INFO L175 MemorySlicer]: Split 37 memory accesses to 5 slices as follows [2, 5, 26, 2, 2]. 70 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5, 0, 0, 0]. The 17 writes are split as follows [0, 0, 15, 1, 1]. [2023-11-29 01:51:48,645 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:51:48" (1/1) ... [2023-11-29 01:51:48,646 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:51:48" (1/1) ... [2023-11-29 01:51:48,662 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:51:48" (1/1) ... [2023-11-29 01:51:48,668 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:51:48" (1/1) ... [2023-11-29 01:51:48,672 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:51:48" (1/1) ... [2023-11-29 01:51:48,675 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:51:48" (1/1) ... [2023-11-29 01:51:48,682 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 01:51:48,683 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 01:51:48,683 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 01:51:48,683 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 01:51:48,684 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:51:48" (1/1) ... [2023-11-29 01:51:48,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:51:48,701 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb2cc369-747a-4d8b-861f-065dd6473ff3/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:51:48,712 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb2cc369-747a-4d8b-861f-065dd6473ff3/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 01:51:48,716 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb2cc369-747a-4d8b-861f-065dd6473ff3/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 01:51:48,744 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 01:51:48,744 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-29 01:51:48,744 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-29 01:51:48,744 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-29 01:51:48,744 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2023-11-29 01:51:48,744 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2023-11-29 01:51:48,744 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-11-29 01:51:48,744 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-11-29 01:51:48,745 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 01:51:48,745 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-29 01:51:48,745 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-29 01:51:48,745 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-29 01:51:48,745 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-29 01:51:48,745 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-29 01:51:48,745 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-29 01:51:48,746 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-11-29 01:51:48,746 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-11-29 01:51:48,746 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 01:51:48,746 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 01:51:48,746 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-29 01:51:48,746 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-29 01:51:48,746 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-29 01:51:48,747 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-29 01:51:48,747 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-29 01:51:48,747 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 01:51:48,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-29 01:51:48,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-29 01:51:48,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-29 01:51:48,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2023-11-29 01:51:48,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2023-11-29 01:51:48,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 01:51:48,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 01:51:48,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 01:51:48,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-29 01:51:48,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-29 01:51:48,748 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 01:51:48,748 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 01:51:48,750 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-29 01:51:48,958 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 01:51:48,960 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 01:51:49,323 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 01:51:49,618 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 01:51:49,619 INFO L309 CfgBuilder]: Removed 30 assume(true) statements. [2023-11-29 01:51:49,619 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:51:49 BoogieIcfgContainer [2023-11-29 01:51:49,619 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 01:51:49,622 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 01:51:49,622 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 01:51:49,625 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 01:51:49,625 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 01:51:47" (1/3) ... [2023-11-29 01:51:49,626 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38567a63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:51:49, skipping insertion in model container [2023-11-29 01:51:49,626 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:51:48" (2/3) ... [2023-11-29 01:51:49,626 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38567a63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:51:49, skipping insertion in model container [2023-11-29 01:51:49,627 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:51:49" (3/3) ... [2023-11-29 01:51:49,628 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_90-arrayloop2_racing.i [2023-11-29 01:51:49,639 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-29 01:51:49,650 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 01:51:49,651 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-29 01:51:49,651 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 01:51:49,727 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-29 01:51:49,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 88 places, 117 transitions, 254 flow [2023-11-29 01:51:49,833 INFO L124 PetriNetUnfolderBase]: 52/194 cut-off events. [2023-11-29 01:51:49,833 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-29 01:51:49,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 211 conditions, 194 events. 52/194 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 811 event pairs, 0 based on Foata normal form. 0/133 useless extension candidates. Maximal degree in co-relation 118. Up to 8 conditions per place. [2023-11-29 01:51:49,839 INFO L82 GeneralOperation]: Start removeDead. Operand has 88 places, 117 transitions, 254 flow [2023-11-29 01:51:49,846 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 88 places, 117 transitions, 254 flow [2023-11-29 01:51:49,857 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 01:51:49,863 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@76a21b5a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 01:51:49,863 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-11-29 01:51:49,871 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 01:51:49,871 INFO L124 PetriNetUnfolderBase]: 2/24 cut-off events. [2023-11-29 01:51:49,871 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 01:51:49,872 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:51:49,872 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2023-11-29 01:51:49,873 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-29 01:51:49,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:51:49,879 INFO L85 PathProgramCache]: Analyzing trace with hash -22250490, now seen corresponding path program 1 times [2023-11-29 01:51:49,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:51:49,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422981922] [2023-11-29 01:51:49,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:51:49,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:51:49,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:51:50,129 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 01:51:50,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:51:50,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422981922] [2023-11-29 01:51:50,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422981922] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:51:50,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:51:50,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 01:51:50,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149674512] [2023-11-29 01:51:50,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:51:50,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:51:50,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:51:50,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:51:50,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:51:50,166 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 117 [2023-11-29 01:51:50,168 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 117 transitions, 254 flow. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:51:50,168 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:51:50,168 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 117 [2023-11-29 01:51:50,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:51:52,030 INFO L124 PetriNetUnfolderBase]: 7193/14004 cut-off events. [2023-11-29 01:51:52,030 INFO L125 PetriNetUnfolderBase]: For 239/239 co-relation queries the response was YES. [2023-11-29 01:51:52,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24698 conditions, 14004 events. 7193/14004 cut-off events. For 239/239 co-relation queries the response was YES. Maximal size of possible extension queue 446. Compared 112136 event pairs, 6080 based on Foata normal form. 2354/14305 useless extension candidates. Maximal degree in co-relation 23602. Up to 10560 conditions per place. [2023-11-29 01:51:52,111 INFO L140 encePairwiseOnDemand]: 92/117 looper letters, 66 selfloop transitions, 2 changer transitions 0/98 dead transitions. [2023-11-29 01:51:52,111 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 98 transitions, 352 flow [2023-11-29 01:51:52,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:51:52,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 01:51:52,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 181 transitions. [2023-11-29 01:51:52,122 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5156695156695157 [2023-11-29 01:51:52,123 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 181 transitions. [2023-11-29 01:51:52,123 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 181 transitions. [2023-11-29 01:51:52,124 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:51:52,126 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 181 transitions. [2023-11-29 01:51:52,129 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 60.333333333333336) internal successors, (181), 3 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:51:52,133 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 117.0) internal successors, (468), 4 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:51:52,134 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 117.0) internal successors, (468), 4 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:51:52,135 INFO L175 Difference]: Start difference. First operand has 88 places, 117 transitions, 254 flow. Second operand 3 states and 181 transitions. [2023-11-29 01:51:52,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 98 transitions, 352 flow [2023-11-29 01:51:52,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 98 transitions, 352 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 01:51:52,143 INFO L231 Difference]: Finished difference. Result has 91 places, 96 transitions, 222 flow [2023-11-29 01:51:52,145 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=222, PETRI_PLACES=91, PETRI_TRANSITIONS=96} [2023-11-29 01:51:52,148 INFO L281 CegarLoopForPetriNet]: 88 programPoint places, 3 predicate places. [2023-11-29 01:51:52,148 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 96 transitions, 222 flow [2023-11-29 01:51:52,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:51:52,149 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:51:52,149 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:51:52,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 01:51:52,150 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-29 01:51:52,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:51:52,151 INFO L85 PathProgramCache]: Analyzing trace with hash 1961604380, now seen corresponding path program 1 times [2023-11-29 01:51:52,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:51:52,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481681239] [2023-11-29 01:51:52,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:51:52,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:51:52,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:51:52,239 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 01:51:52,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:51:52,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481681239] [2023-11-29 01:51:52,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481681239] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:51:52,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:51:52,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:51:52,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099890715] [2023-11-29 01:51:52,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:51:52,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:51:52,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:51:52,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:51:52,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:51:52,243 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 117 [2023-11-29 01:51:52,243 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 96 transitions, 222 flow. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:51:52,244 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:51:52,244 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 117 [2023-11-29 01:51:52,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:51:53,982 INFO L124 PetriNetUnfolderBase]: 7193/14006 cut-off events. [2023-11-29 01:51:53,982 INFO L125 PetriNetUnfolderBase]: For 239/239 co-relation queries the response was YES. [2023-11-29 01:51:53,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24709 conditions, 14006 events. 7193/14006 cut-off events. For 239/239 co-relation queries the response was YES. Maximal size of possible extension queue 446. Compared 112163 event pairs, 6080 based on Foata normal form. 2/11958 useless extension candidates. Maximal degree in co-relation 24690. Up to 10563 conditions per place. [2023-11-29 01:51:54,043 INFO L140 encePairwiseOnDemand]: 114/117 looper letters, 65 selfloop transitions, 2 changer transitions 0/97 dead transitions. [2023-11-29 01:51:54,043 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 97 transitions, 358 flow [2023-11-29 01:51:54,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:51:54,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 01:51:54,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 157 transitions. [2023-11-29 01:51:54,046 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4472934472934473 [2023-11-29 01:51:54,046 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 157 transitions. [2023-11-29 01:51:54,046 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 157 transitions. [2023-11-29 01:51:54,047 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:51:54,047 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 157 transitions. [2023-11-29 01:51:54,048 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:51:54,049 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 117.0) internal successors, (468), 4 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:51:54,050 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 117.0) internal successors, (468), 4 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:51:54,050 INFO L175 Difference]: Start difference. First operand has 91 places, 96 transitions, 222 flow. Second operand 3 states and 157 transitions. [2023-11-29 01:51:54,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 97 transitions, 358 flow [2023-11-29 01:51:54,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 97 transitions, 356 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 01:51:54,055 INFO L231 Difference]: Finished difference. Result has 93 places, 97 transitions, 234 flow [2023-11-29 01:51:54,055 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=234, PETRI_PLACES=93, PETRI_TRANSITIONS=97} [2023-11-29 01:51:54,056 INFO L281 CegarLoopForPetriNet]: 88 programPoint places, 5 predicate places. [2023-11-29 01:51:54,056 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 97 transitions, 234 flow [2023-11-29 01:51:54,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:51:54,056 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:51:54,056 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:51:54,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 01:51:54,056 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-29 01:51:54,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:51:54,057 INFO L85 PathProgramCache]: Analyzing trace with hash 1133511027, now seen corresponding path program 1 times [2023-11-29 01:51:54,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:51:54,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563405303] [2023-11-29 01:51:54,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:51:54,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:51:54,101 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:51:54,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [599513695] [2023-11-29 01:51:54,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:51:54,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:51:54,102 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb2cc369-747a-4d8b-861f-065dd6473ff3/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:51:54,108 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb2cc369-747a-4d8b-861f-065dd6473ff3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:51:54,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb2cc369-747a-4d8b-861f-065dd6473ff3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 01:51:54,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:51:54,300 INFO L262 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 01:51:54,304 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:51:54,354 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 01:51:54,355 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:51:54,374 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 01:51:54,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:51:54,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563405303] [2023-11-29 01:51:54,375 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:51:54,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [599513695] [2023-11-29 01:51:54,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [599513695] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:51:54,375 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:51:54,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-11-29 01:51:54,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323916154] [2023-11-29 01:51:54,376 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:51:54,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 01:51:54,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:51:54,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 01:51:54,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-29 01:51:54,378 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 117 [2023-11-29 01:51:54,379 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 97 transitions, 234 flow. Second operand has 6 states, 6 states have (on average 31.833333333333332) internal successors, (191), 6 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:51:54,379 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:51:54,379 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 117 [2023-11-29 01:51:54,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:51:55,991 INFO L124 PetriNetUnfolderBase]: 7193/14012 cut-off events. [2023-11-29 01:51:55,991 INFO L125 PetriNetUnfolderBase]: For 240/240 co-relation queries the response was YES. [2023-11-29 01:51:56,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24737 conditions, 14012 events. 7193/14012 cut-off events. For 240/240 co-relation queries the response was YES. Maximal size of possible extension queue 446. Compared 112225 event pairs, 6080 based on Foata normal form. 6/11968 useless extension candidates. Maximal degree in co-relation 24697. Up to 10563 conditions per place. [2023-11-29 01:51:56,063 INFO L140 encePairwiseOnDemand]: 114/117 looper letters, 65 selfloop transitions, 5 changer transitions 0/100 dead transitions. [2023-11-29 01:51:56,063 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 100 transitions, 386 flow [2023-11-29 01:51:56,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 01:51:56,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 01:51:56,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 252 transitions. [2023-11-29 01:51:56,067 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.358974358974359 [2023-11-29 01:51:56,067 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 252 transitions. [2023-11-29 01:51:56,067 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 252 transitions. [2023-11-29 01:51:56,068 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:51:56,068 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 252 transitions. [2023-11-29 01:51:56,070 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 42.0) internal successors, (252), 6 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:51:56,073 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 117.0) internal successors, (819), 7 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:51:56,074 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 117.0) internal successors, (819), 7 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:51:56,074 INFO L175 Difference]: Start difference. First operand has 93 places, 97 transitions, 234 flow. Second operand 6 states and 252 transitions. [2023-11-29 01:51:56,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 100 transitions, 386 flow [2023-11-29 01:51:56,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 100 transitions, 382 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-29 01:51:56,080 INFO L231 Difference]: Finished difference. Result has 100 places, 100 transitions, 272 flow [2023-11-29 01:51:56,081 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=272, PETRI_PLACES=100, PETRI_TRANSITIONS=100} [2023-11-29 01:51:56,082 INFO L281 CegarLoopForPetriNet]: 88 programPoint places, 12 predicate places. [2023-11-29 01:51:56,082 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 100 transitions, 272 flow [2023-11-29 01:51:56,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 31.833333333333332) internal successors, (191), 6 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:51:56,083 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:51:56,083 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:51:56,091 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb2cc369-747a-4d8b-861f-065dd6473ff3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 01:51:56,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb2cc369-747a-4d8b-861f-065dd6473ff3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:51:56,288 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-29 01:51:56,289 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:51:56,289 INFO L85 PathProgramCache]: Analyzing trace with hash 566727388, now seen corresponding path program 2 times [2023-11-29 01:51:56,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:51:56,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021875200] [2023-11-29 01:51:56,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:51:56,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:51:56,386 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:51:56,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1946055136] [2023-11-29 01:51:56,387 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 01:51:56,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:51:56,387 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb2cc369-747a-4d8b-861f-065dd6473ff3/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:51:56,389 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb2cc369-747a-4d8b-861f-065dd6473ff3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:51:56,392 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb2cc369-747a-4d8b-861f-065dd6473ff3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 01:51:56,772 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 01:51:56,772 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:51:56,775 INFO L262 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 01:51:56,778 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:51:56,815 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 01:51:56,815 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:51:56,874 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 01:51:56,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:51:56,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021875200] [2023-11-29 01:51:56,875 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:51:56,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1946055136] [2023-11-29 01:51:56,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1946055136] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:51:56,875 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:51:56,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-11-29 01:51:56,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000187407] [2023-11-29 01:51:56,876 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:51:56,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 01:51:56,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:51:56,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 01:51:56,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-11-29 01:51:56,878 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 117 [2023-11-29 01:51:56,879 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 100 transitions, 272 flow. Second operand has 12 states, 12 states have (on average 31.416666666666668) internal successors, (377), 12 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:51:56,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:51:56,879 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 117 [2023-11-29 01:51:56,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:51:58,348 INFO L124 PetriNetUnfolderBase]: 7193/14024 cut-off events. [2023-11-29 01:51:58,348 INFO L125 PetriNetUnfolderBase]: For 320/320 co-relation queries the response was YES. [2023-11-29 01:51:58,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24808 conditions, 14024 events. 7193/14024 cut-off events. For 320/320 co-relation queries the response was YES. Maximal size of possible extension queue 446. Compared 112305 event pairs, 6080 based on Foata normal form. 12/11986 useless extension candidates. Maximal degree in co-relation 24693. Up to 10563 conditions per place. [2023-11-29 01:51:58,435 INFO L140 encePairwiseOnDemand]: 114/117 looper letters, 65 selfloop transitions, 11 changer transitions 0/106 dead transitions. [2023-11-29 01:51:58,435 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 106 transitions, 460 flow [2023-11-29 01:51:58,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 01:51:58,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-29 01:51:58,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 441 transitions. [2023-11-29 01:51:58,438 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3141025641025641 [2023-11-29 01:51:58,439 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 441 transitions. [2023-11-29 01:51:58,439 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 441 transitions. [2023-11-29 01:51:58,439 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:51:58,440 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 441 transitions. [2023-11-29 01:51:58,441 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 36.75) internal successors, (441), 12 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:51:58,446 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 117.0) internal successors, (1521), 13 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:51:58,448 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 117.0) internal successors, (1521), 13 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:51:58,448 INFO L175 Difference]: Start difference. First operand has 100 places, 100 transitions, 272 flow. Second operand 12 states and 441 transitions. [2023-11-29 01:51:58,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 106 transitions, 460 flow [2023-11-29 01:51:58,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 106 transitions, 446 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-11-29 01:51:58,454 INFO L231 Difference]: Finished difference. Result has 116 places, 106 transitions, 354 flow [2023-11-29 01:51:58,455 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=354, PETRI_PLACES=116, PETRI_TRANSITIONS=106} [2023-11-29 01:51:58,456 INFO L281 CegarLoopForPetriNet]: 88 programPoint places, 28 predicate places. [2023-11-29 01:51:58,456 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 106 transitions, 354 flow [2023-11-29 01:51:58,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 31.416666666666668) internal successors, (377), 12 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:51:58,457 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:51:58,457 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:51:58,463 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb2cc369-747a-4d8b-861f-065dd6473ff3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 01:51:58,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb2cc369-747a-4d8b-861f-065dd6473ff3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-11-29 01:51:58,660 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-29 01:51:58,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:51:58,661 INFO L85 PathProgramCache]: Analyzing trace with hash -113296516, now seen corresponding path program 3 times [2023-11-29 01:51:58,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:51:58,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490628987] [2023-11-29 01:51:58,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:51:58,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:51:58,861 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:51:58,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [558646145] [2023-11-29 01:51:58,862 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 01:51:58,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:51:58,862 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb2cc369-747a-4d8b-861f-065dd6473ff3/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:51:58,865 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb2cc369-747a-4d8b-861f-065dd6473ff3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:51:58,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb2cc369-747a-4d8b-861f-065dd6473ff3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 01:51:59,294 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-29 01:51:59,294 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:51:59,296 INFO L262 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 01:51:59,299 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:51:59,335 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-11-29 01:51:59,336 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:51:59,379 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-11-29 01:51:59,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:51:59,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490628987] [2023-11-29 01:51:59,380 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:51:59,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [558646145] [2023-11-29 01:51:59,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [558646145] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:51:59,380 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:51:59,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2023-11-29 01:51:59,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206070573] [2023-11-29 01:51:59,381 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:51:59,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 01:51:59,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:51:59,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 01:51:59,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-29 01:51:59,383 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 117 [2023-11-29 01:51:59,383 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 106 transitions, 354 flow. Second operand has 6 states, 6 states have (on average 32.166666666666664) internal successors, (193), 6 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:51:59,384 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:51:59,384 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 117 [2023-11-29 01:51:59,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:52:01,380 INFO L124 PetriNetUnfolderBase]: 7195/14088 cut-off events. [2023-11-29 01:52:01,380 INFO L125 PetriNetUnfolderBase]: For 398/398 co-relation queries the response was YES. [2023-11-29 01:52:01,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25022 conditions, 14088 events. 7195/14088 cut-off events. For 398/398 co-relation queries the response was YES. Maximal size of possible extension queue 449. Compared 112870 event pairs, 6080 based on Foata normal form. 3/12020 useless extension candidates. Maximal degree in co-relation 24715. Up to 10541 conditions per place. [2023-11-29 01:52:01,448 INFO L140 encePairwiseOnDemand]: 113/117 looper letters, 109 selfloop transitions, 6 changer transitions 0/145 dead transitions. [2023-11-29 01:52:01,449 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 145 transitions, 933 flow [2023-11-29 01:52:01,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 01:52:01,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 01:52:01,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 258 transitions. [2023-11-29 01:52:01,451 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36752136752136755 [2023-11-29 01:52:01,451 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 258 transitions. [2023-11-29 01:52:01,451 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 258 transitions. [2023-11-29 01:52:01,451 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:52:01,451 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 258 transitions. [2023-11-29 01:52:01,452 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 43.0) internal successors, (258), 6 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:52:01,454 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 117.0) internal successors, (819), 7 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:52:01,454 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 117.0) internal successors, (819), 7 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:52:01,454 INFO L175 Difference]: Start difference. First operand has 116 places, 106 transitions, 354 flow. Second operand 6 states and 258 transitions. [2023-11-29 01:52:01,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 145 transitions, 933 flow [2023-11-29 01:52:01,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 145 transitions, 739 flow, removed 76 selfloop flow, removed 5 redundant places. [2023-11-29 01:52:01,462 INFO L231 Difference]: Finished difference. Result has 120 places, 109 transitions, 389 flow [2023-11-29 01:52:01,463 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=389, PETRI_PLACES=120, PETRI_TRANSITIONS=109} [2023-11-29 01:52:01,464 INFO L281 CegarLoopForPetriNet]: 88 programPoint places, 32 predicate places. [2023-11-29 01:52:01,464 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 109 transitions, 389 flow [2023-11-29 01:52:01,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 32.166666666666664) internal successors, (193), 6 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:52:01,465 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:52:01,465 INFO L208 CegarLoopForPetriNet]: trace histogram [40, 4, 4, 2, 1, 1, 1, 1, 1] [2023-11-29 01:52:01,472 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb2cc369-747a-4d8b-861f-065dd6473ff3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 01:52:01,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb2cc369-747a-4d8b-861f-065dd6473ff3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:52:01,671 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-29 01:52:01,803 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:52:01,803 INFO L85 PathProgramCache]: Analyzing trace with hash 387216350, now seen corresponding path program 4 times [2023-11-29 01:52:01,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:52:01,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217774278] [2023-11-29 01:52:01,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:52:01,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:52:02,486 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:52:02,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1984686453] [2023-11-29 01:52:02,486 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 01:52:02,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:52:02,487 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb2cc369-747a-4d8b-861f-065dd6473ff3/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:52:02,488 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb2cc369-747a-4d8b-861f-065dd6473ff3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:52:02,490 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb2cc369-747a-4d8b-861f-065dd6473ff3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 01:52:03,983 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 01:52:03,984 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:52:04,008 INFO L262 TraceCheckSpWp]: Trace formula consists of 3629 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 01:52:04,015 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:52:04,121 INFO L134 CoverageAnalysis]: Checked inductivity of 958 backedges. 367 proven. 55 refuted. 0 times theorem prover too weak. 536 trivial. 0 not checked. [2023-11-29 01:52:04,122 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:52:04,299 INFO L134 CoverageAnalysis]: Checked inductivity of 958 backedges. 367 proven. 55 refuted. 0 times theorem prover too weak. 536 trivial. 0 not checked. [2023-11-29 01:52:04,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:52:04,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217774278] [2023-11-29 01:52:04,299 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:52:04,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1984686453] [2023-11-29 01:52:04,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1984686453] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:52:04,300 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:52:04,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2023-11-29 01:52:04,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989722092] [2023-11-29 01:52:04,300 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:52:04,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-29 01:52:04,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:52:04,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-29 01:52:04,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2023-11-29 01:52:04,303 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 117 [2023-11-29 01:52:04,305 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 109 transitions, 389 flow. Second operand has 24 states, 24 states have (on average 31.333333333333332) internal successors, (752), 24 states have internal predecessors, (752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:52:04,305 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:52:04,305 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 117 [2023-11-29 01:52:04,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:52:08,320 INFO L124 PetriNetUnfolderBase]: 7195/14136 cut-off events. [2023-11-29 01:52:08,320 INFO L125 PetriNetUnfolderBase]: For 3724/3724 co-relation queries the response was YES. [2023-11-29 01:52:08,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25138 conditions, 14136 events. 7195/14136 cut-off events. For 3724/3724 co-relation queries the response was YES. Maximal size of possible extension queue 449. Compared 112852 event pairs, 6080 based on Foata normal form. 48/12113 useless extension candidates. Maximal degree in co-relation 24720. Up to 10553 conditions per place. [2023-11-29 01:52:08,366 INFO L140 encePairwiseOnDemand]: 114/117 looper letters, 67 selfloop transitions, 24 changer transitions 0/121 dead transitions. [2023-11-29 01:52:08,366 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 121 transitions, 643 flow [2023-11-29 01:52:08,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-29 01:52:08,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-11-29 01:52:08,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 819 transitions. [2023-11-29 01:52:08,372 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2916666666666667 [2023-11-29 01:52:08,372 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 819 transitions. [2023-11-29 01:52:08,372 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 819 transitions. [2023-11-29 01:52:08,373 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:52:08,373 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 819 transitions. [2023-11-29 01:52:08,375 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 34.125) internal successors, (819), 24 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:52:08,381 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 117.0) internal successors, (2925), 25 states have internal predecessors, (2925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:52:08,382 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 117.0) internal successors, (2925), 25 states have internal predecessors, (2925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:52:08,382 INFO L175 Difference]: Start difference. First operand has 120 places, 109 transitions, 389 flow. Second operand 24 states and 819 transitions. [2023-11-29 01:52:08,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 121 transitions, 643 flow [2023-11-29 01:52:08,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 121 transitions, 635 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-11-29 01:52:08,389 INFO L231 Difference]: Finished difference. Result has 154 places, 121 transitions, 623 flow [2023-11-29 01:52:08,389 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=381, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=623, PETRI_PLACES=154, PETRI_TRANSITIONS=121} [2023-11-29 01:52:08,390 INFO L281 CegarLoopForPetriNet]: 88 programPoint places, 66 predicate places. [2023-11-29 01:52:08,390 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 121 transitions, 623 flow [2023-11-29 01:52:08,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 31.333333333333332) internal successors, (752), 24 states have internal predecessors, (752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:52:08,391 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:52:08,391 INFO L208 CegarLoopForPetriNet]: trace histogram [88, 4, 4, 2, 1, 1, 1, 1, 1] [2023-11-29 01:52:08,401 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb2cc369-747a-4d8b-861f-065dd6473ff3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 01:52:08,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb2cc369-747a-4d8b-861f-065dd6473ff3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:52:08,591 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-29 01:52:08,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:52:08,592 INFO L85 PathProgramCache]: Analyzing trace with hash 943821534, now seen corresponding path program 5 times [2023-11-29 01:52:08,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:52:08,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466028358] [2023-11-29 01:52:08,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:52:08,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:52:09,781 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:52:09,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1498796557] [2023-11-29 01:52:09,782 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 01:52:09,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:52:09,782 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb2cc369-747a-4d8b-861f-065dd6473ff3/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:52:09,784 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb2cc369-747a-4d8b-861f-065dd6473ff3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:52:09,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb2cc369-747a-4d8b-861f-065dd6473ff3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process