./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_79-equ_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6be0c869-d16e-4a84-949c-35f760cd5159/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6be0c869-d16e-4a84-949c-35f760cd5159/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_6be0c869-d16e-4a84-949c-35f760cd5159/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6be0c869-d16e-4a84-949c-35f760cd5159/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_79-equ_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6be0c869-d16e-4a84-949c-35f760cd5159/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_6be0c869-d16e-4a84-949c-35f760cd5159/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 5ac72ff2379990464c5f55660be1e08b12557a61aceeef8401296ef66be035fc --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 04:25:28,480 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 04:25:28,544 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6be0c869-d16e-4a84-949c-35f760cd5159/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 04:25:28,548 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 04:25:28,549 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 04:25:28,575 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 04:25:28,576 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 04:25:28,576 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 04:25:28,577 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 04:25:28,577 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 04:25:28,578 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 04:25:28,578 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 04:25:28,579 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 04:25:28,580 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 04:25:28,580 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 04:25:28,581 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 04:25:28,581 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 04:25:28,582 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 04:25:28,582 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 04:25:28,583 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 04:25:28,583 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 04:25:28,587 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 04:25:28,588 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 04:25:28,588 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 04:25:28,589 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 04:25:28,589 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 04:25:28,589 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 04:25:28,590 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 04:25:28,590 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 04:25:28,590 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 04:25:28,591 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 04:25:28,591 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 04:25:28,591 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 04:25:28,592 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 04:25:28,592 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 04:25:28,592 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 04:25:28,592 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 04:25:28,592 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 04:25:28,593 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 04:25:28,593 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 04:25:28,593 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 04:25:28,593 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 04:25:28,593 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_6be0c869-d16e-4a84-949c-35f760cd5159/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6be0c869-d16e-4a84-949c-35f760cd5159/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5ac72ff2379990464c5f55660be1e08b12557a61aceeef8401296ef66be035fc [2023-11-29 04:25:28,833 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 04:25:28,854 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 04:25:28,856 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 04:25:28,857 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 04:25:28,858 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 04:25:28,859 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6be0c869-d16e-4a84-949c-35f760cd5159/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/goblint-regression/28-race_reach_79-equ_racefree.i [2023-11-29 04:25:31,636 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 04:25:31,923 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 04:25:31,927 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6be0c869-d16e-4a84-949c-35f760cd5159/sv-benchmarks/c/goblint-regression/28-race_reach_79-equ_racefree.i [2023-11-29 04:25:31,950 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6be0c869-d16e-4a84-949c-35f760cd5159/bin/uautomizer-verify-BQ2R08f2Ya/data/2a9bffc83/06ec99d53c1149fa8664d860c5f3b752/FLAG56a05baa1 [2023-11-29 04:25:31,964 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6be0c869-d16e-4a84-949c-35f760cd5159/bin/uautomizer-verify-BQ2R08f2Ya/data/2a9bffc83/06ec99d53c1149fa8664d860c5f3b752 [2023-11-29 04:25:31,966 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 04:25:31,968 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 04:25:31,969 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 04:25:31,970 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 04:25:31,975 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 04:25:31,975 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:25:31" (1/1) ... [2023-11-29 04:25:31,976 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67bf36ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:25:31, skipping insertion in model container [2023-11-29 04:25:31,977 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:25:31" (1/1) ... [2023-11-29 04:25:32,027 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 04:25:32,422 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_6be0c869-d16e-4a84-949c-35f760cd5159/sv-benchmarks/c/goblint-regression/28-race_reach_79-equ_racefree.i[47038,47051] [2023-11-29 04:25:32,447 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 04:25:32,459 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 04:25:32,498 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_6be0c869-d16e-4a84-949c-35f760cd5159/sv-benchmarks/c/goblint-regression/28-race_reach_79-equ_racefree.i[47038,47051] [2023-11-29 04:25:32,511 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 04:25:32,571 INFO L206 MainTranslator]: Completed translation [2023-11-29 04:25:32,572 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:25:32 WrapperNode [2023-11-29 04:25:32,572 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 04:25:32,573 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 04:25:32,573 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 04:25:32,573 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 04:25:32,579 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:25:32" (1/1) ... [2023-11-29 04:25:32,595 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:25:32" (1/1) ... [2023-11-29 04:25:32,624 INFO L138 Inliner]: procedures = 272, calls = 64, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 229 [2023-11-29 04:25:32,625 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 04:25:32,625 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 04:25:32,625 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 04:25:32,626 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 04:25:32,637 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:25:32" (1/1) ... [2023-11-29 04:25:32,637 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:25:32" (1/1) ... [2023-11-29 04:25:32,642 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:25:32" (1/1) ... [2023-11-29 04:25:32,660 INFO L175 MemorySlicer]: Split 35 memory accesses to 4 slices as follows [2, 5, 26, 2]. 74 percent of accesses are in the largest equivalence class. The 23 initializations are split as follows [2, 5, 16, 0]. The 5 writes are split as follows [0, 0, 4, 1]. [2023-11-29 04:25:32,660 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:25:32" (1/1) ... [2023-11-29 04:25:32,661 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:25:32" (1/1) ... [2023-11-29 04:25:32,670 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:25:32" (1/1) ... [2023-11-29 04:25:32,675 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:25:32" (1/1) ... [2023-11-29 04:25:32,678 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:25:32" (1/1) ... [2023-11-29 04:25:32,680 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:25:32" (1/1) ... [2023-11-29 04:25:32,685 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 04:25:32,686 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 04:25:32,686 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 04:25:32,686 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 04:25:32,687 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:25:32" (1/1) ... [2023-11-29 04:25:32,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 04:25:32,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6be0c869-d16e-4a84-949c-35f760cd5159/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:25:32,718 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6be0c869-d16e-4a84-949c-35f760cd5159/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 04:25:32,721 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6be0c869-d16e-4a84-949c-35f760cd5159/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 04:25:32,747 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 04:25:32,747 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 04:25:32,747 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-29 04:25:32,747 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-29 04:25:32,747 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-29 04:25:32,748 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-29 04:25:32,748 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-29 04:25:32,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 04:25:32,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 04:25:32,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-29 04:25:32,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-29 04:25:32,748 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-29 04:25:32,749 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 04:25:32,749 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-29 04:25:32,749 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-29 04:25:32,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 04:25:32,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 04:25:32,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 04:25:32,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-29 04:25:32,750 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 04:25:32,750 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 04:25:32,751 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 04:25:32,893 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 04:25:32,895 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 04:25:33,148 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 04:25:33,389 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 04:25:33,389 INFO L309 CfgBuilder]: Removed 22 assume(true) statements. [2023-11-29 04:25:33,390 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:25:33 BoogieIcfgContainer [2023-11-29 04:25:33,390 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 04:25:33,393 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 04:25:33,393 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 04:25:33,396 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 04:25:33,396 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 04:25:31" (1/3) ... [2023-11-29 04:25:33,397 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4243c7b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 04:25:33, skipping insertion in model container [2023-11-29 04:25:33,397 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:25:32" (2/3) ... [2023-11-29 04:25:33,397 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4243c7b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 04:25:33, skipping insertion in model container [2023-11-29 04:25:33,397 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:25:33" (3/3) ... [2023-11-29 04:25:33,399 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_79-equ_racefree.i [2023-11-29 04:25:33,408 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-29 04:25:33,418 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 04:25:33,418 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-29 04:25:33,418 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 04:25:33,455 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-29 04:25:33,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 71 places, 94 transitions, 195 flow [2023-11-29 04:25:33,527 INFO L124 PetriNetUnfolderBase]: 38/139 cut-off events. [2023-11-29 04:25:33,527 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-29 04:25:33,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 144 conditions, 139 events. 38/139 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 533 event pairs, 0 based on Foata normal form. 0/95 useless extension candidates. Maximal degree in co-relation 87. Up to 8 conditions per place. [2023-11-29 04:25:33,535 INFO L82 GeneralOperation]: Start removeDead. Operand has 71 places, 94 transitions, 195 flow [2023-11-29 04:25:33,540 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 70 places, 91 transitions, 186 flow [2023-11-29 04:25:33,551 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 04:25:33,558 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;@56755d85, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 04:25:33,558 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-29 04:25:33,566 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 04:25:33,566 INFO L124 PetriNetUnfolderBase]: 0/15 cut-off events. [2023-11-29 04:25:33,566 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 04:25:33,566 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:25:33,567 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2023-11-29 04:25:33,567 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-29 04:25:33,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:25:33,572 INFO L85 PathProgramCache]: Analyzing trace with hash 1452997932, now seen corresponding path program 1 times [2023-11-29 04:25:33,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:25:33,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507640917] [2023-11-29 04:25:33,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:25:33,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:25:33,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 04:25:33,709 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 04:25:33,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 04:25:33,770 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 04:25:33,771 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-29 04:25:33,772 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2023-11-29 04:25:33,774 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2023-11-29 04:25:33,774 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2023-11-29 04:25:33,774 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2023-11-29 04:25:33,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 04:25:33,775 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-29 04:25:33,778 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-29 04:25:33,779 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-29 04:25:33,813 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-29 04:25:33,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 103 places, 137 transitions, 290 flow [2023-11-29 04:25:33,865 INFO L124 PetriNetUnfolderBase]: 64/235 cut-off events. [2023-11-29 04:25:33,865 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-29 04:25:33,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 247 conditions, 235 events. 64/235 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1089 event pairs, 0 based on Foata normal form. 0/162 useless extension candidates. Maximal degree in co-relation 141. Up to 12 conditions per place. [2023-11-29 04:25:33,870 INFO L82 GeneralOperation]: Start removeDead. Operand has 103 places, 137 transitions, 290 flow [2023-11-29 04:25:33,874 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 103 places, 136 transitions, 288 flow [2023-11-29 04:25:33,876 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 04:25:33,878 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;@56755d85, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 04:25:33,878 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-11-29 04:25:33,888 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 04:25:33,888 INFO L124 PetriNetUnfolderBase]: 6/53 cut-off events. [2023-11-29 04:25:33,888 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-29 04:25:33,888 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:25:33,889 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1] [2023-11-29 04:25:33,889 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-11-29 04:25:33,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:25:33,890 INFO L85 PathProgramCache]: Analyzing trace with hash -1016219453, now seen corresponding path program 1 times [2023-11-29 04:25:33,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:25:33,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118591167] [2023-11-29 04:25:33,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:25:33,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:25:33,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 04:25:33,932 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 04:25:33,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 04:25:33,969 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 04:25:33,969 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-29 04:25:33,970 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2023-11-29 04:25:33,970 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2023-11-29 04:25:33,970 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2023-11-29 04:25:33,970 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2023-11-29 04:25:33,971 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2023-11-29 04:25:33,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 04:25:33,971 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-29 04:25:33,972 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-29 04:25:33,972 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-29 04:25:34,006 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-29 04:25:34,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 135 places, 180 transitions, 387 flow [2023-11-29 04:25:34,075 INFO L124 PetriNetUnfolderBase]: 93/344 cut-off events. [2023-11-29 04:25:34,075 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-11-29 04:25:34,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 369 conditions, 344 events. 93/344 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1727 event pairs, 1 based on Foata normal form. 0/240 useless extension candidates. Maximal degree in co-relation 244. Up to 16 conditions per place. [2023-11-29 04:25:34,081 INFO L82 GeneralOperation]: Start removeDead. Operand has 135 places, 180 transitions, 387 flow [2023-11-29 04:25:34,086 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 135 places, 179 transitions, 385 flow [2023-11-29 04:25:34,088 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 04:25:34,089 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;@56755d85, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 04:25:34,089 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-11-29 04:25:34,100 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 04:25:34,100 INFO L124 PetriNetUnfolderBase]: 12/84 cut-off events. [2023-11-29 04:25:34,101 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-29 04:25:34,101 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:25:34,101 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:25:34,101 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-11-29 04:25:34,101 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:25:34,102 INFO L85 PathProgramCache]: Analyzing trace with hash 1871747050, now seen corresponding path program 1 times [2023-11-29 04:25:34,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:25:34,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300465301] [2023-11-29 04:25:34,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:25:34,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:25:34,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:25:34,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:25:34,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:25:34,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300465301] [2023-11-29 04:25:34,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300465301] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:25:34,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:25:34,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:25:34,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985743035] [2023-11-29 04:25:34,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:25:34,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:25:34,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:25:34,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:25:34,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:25:34,236 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 180 [2023-11-29 04:25:34,239 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 179 transitions, 385 flow. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 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 04:25:34,239 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:25:34,239 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 180 [2023-11-29 04:25:34,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:26:18,322 INFO L124 PetriNetUnfolderBase]: 352730/576692 cut-off events. [2023-11-29 04:26:18,322 INFO L125 PetriNetUnfolderBase]: For 3263/3263 co-relation queries the response was YES. [2023-11-29 04:26:19,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1046399 conditions, 576692 events. 352730/576692 cut-off events. For 3263/3263 co-relation queries the response was YES. Maximal size of possible extension queue 14568. Compared 6277509 event pairs, 218593 based on Foata normal form. 181026/702685 useless extension candidates. Maximal degree in co-relation 64109. Up to 467503 conditions per place. [2023-11-29 04:26:21,357 INFO L140 encePairwiseOnDemand]: 133/180 looper letters, 95 selfloop transitions, 2 changer transitions 0/153 dead transitions. [2023-11-29 04:26:21,357 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 153 transitions, 527 flow [2023-11-29 04:26:21,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:26:21,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 04:26:21,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 321 transitions. [2023-11-29 04:26:21,376 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5944444444444444 [2023-11-29 04:26:21,377 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 321 transitions. [2023-11-29 04:26:21,377 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 321 transitions. [2023-11-29 04:26:21,379 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:26:21,382 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 321 transitions. [2023-11-29 04:26:21,386 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 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 04:26:21,391 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 180.0) internal successors, (720), 4 states have internal predecessors, (720), 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 04:26:21,392 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 180.0) internal successors, (720), 4 states have internal predecessors, (720), 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 04:26:21,394 INFO L175 Difference]: Start difference. First operand has 135 places, 179 transitions, 385 flow. Second operand 3 states and 321 transitions. [2023-11-29 04:26:21,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 153 transitions, 527 flow [2023-11-29 04:26:21,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 153 transitions, 527 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 04:26:21,411 INFO L231 Difference]: Finished difference. Result has 138 places, 136 transitions, 309 flow [2023-11-29 04:26:21,413 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=297, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=309, PETRI_PLACES=138, PETRI_TRANSITIONS=136} [2023-11-29 04:26:21,417 INFO L281 CegarLoopForPetriNet]: 135 programPoint places, 3 predicate places. [2023-11-29 04:26:21,417 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 136 transitions, 309 flow [2023-11-29 04:26:21,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 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 04:26:21,417 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:26:21,418 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1] [2023-11-29 04:26:21,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 04:26:21,418 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-11-29 04:26:21,419 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:26:21,419 INFO L85 PathProgramCache]: Analyzing trace with hash 560176072, now seen corresponding path program 1 times [2023-11-29 04:26:21,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:26:21,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146885401] [2023-11-29 04:26:21,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:26:21,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:26:21,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 04:26:21,456 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 04:26:21,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 04:26:21,487 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 04:26:21,488 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-29 04:26:21,488 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2023-11-29 04:26:21,489 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2023-11-29 04:26:21,489 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 6 remaining) [2023-11-29 04:26:21,489 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2023-11-29 04:26:21,489 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2023-11-29 04:26:21,490 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2023-11-29 04:26:21,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 04:26:21,490 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-29 04:26:21,491 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-29 04:26:21,491 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-11-29 04:26:21,543 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-29 04:26:21,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 167 places, 223 transitions, 486 flow [2023-11-29 04:26:21,629 INFO L124 PetriNetUnfolderBase]: 130/481 cut-off events. [2023-11-29 04:26:21,629 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-11-29 04:26:21,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 532 conditions, 481 events. 130/481 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 2508 event pairs, 6 based on Foata normal form. 0/342 useless extension candidates. Maximal degree in co-relation 366. Up to 32 conditions per place. [2023-11-29 04:26:21,634 INFO L82 GeneralOperation]: Start removeDead. Operand has 167 places, 223 transitions, 486 flow [2023-11-29 04:26:21,642 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 167 places, 222 transitions, 484 flow [2023-11-29 04:26:21,643 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 04:26:21,645 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;@56755d85, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 04:26:21,645 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-11-29 04:26:21,655 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 04:26:21,655 INFO L124 PetriNetUnfolderBase]: 12/84 cut-off events. [2023-11-29 04:26:21,655 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-29 04:26:21,655 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:26:21,655 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:26:21,655 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-29 04:26:21,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:26:21,656 INFO L85 PathProgramCache]: Analyzing trace with hash 826943849, now seen corresponding path program 1 times [2023-11-29 04:26:21,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:26:21,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754837301] [2023-11-29 04:26:21,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:26:21,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:26:21,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:26:21,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:26:21,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:26:21,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754837301] [2023-11-29 04:26:21,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754837301] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:26:21,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:26:21,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:26:21,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941953741] [2023-11-29 04:26:21,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:26:21,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:26:21,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:26:21,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:26:21,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:26:21,712 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 223 [2023-11-29 04:26:21,712 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 222 transitions, 484 flow. Second operand has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:26:21,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:26:21,713 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 223 [2023-11-29 04:26:21,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand