./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/parallel-barrier.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows 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_6bbb7110-dd2e-4253-9dde-9c22bf9121b6/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bbb7110-dd2e-4253-9dde-9c22bf9121b6/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_6bbb7110-dd2e-4253-9dde-9c22bf9121b6/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bbb7110-dd2e-4253-9dde-9c22bf9121b6/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-barrier.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bbb7110-dd2e-4253-9dde-9c22bf9121b6/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bbb7110-dd2e-4253-9dde-9c22bf9121b6/bin/uautomizer-verify-BQ2R08f2Ya --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 504de2e820c504d0b98f5b71c19407f1b43c0dd9338639fad4f2fe6ea2f6854f --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-28 23:51:30,812 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-28 23:51:30,878 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bbb7110-dd2e-4253-9dde-9c22bf9121b6/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-28 23:51:30,883 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-28 23:51:30,883 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-28 23:51:30,908 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-28 23:51:30,909 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-28 23:51:30,909 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-28 23:51:30,910 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-28 23:51:30,910 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-28 23:51:30,911 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-28 23:51:30,911 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-28 23:51:30,912 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-28 23:51:30,913 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-28 23:51:30,913 INFO L153 SettingsManager]: * Use SBE=true [2023-11-28 23:51:30,914 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-28 23:51:30,914 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-28 23:51:30,915 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-28 23:51:30,915 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-28 23:51:30,916 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-28 23:51:30,916 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-28 23:51:30,917 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-28 23:51:30,917 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-28 23:51:30,918 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-28 23:51:30,918 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-28 23:51:30,919 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-28 23:51:30,919 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-28 23:51:30,920 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-28 23:51:30,920 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-28 23:51:30,920 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-28 23:51:30,921 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-28 23:51:30,921 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-28 23:51:30,922 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-28 23:51:30,922 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-28 23:51:30,922 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-28 23:51:30,922 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-28 23:51:30,922 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-28 23:51:30,923 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-28 23:51:30,923 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-28 23:51:30,923 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-28 23:51:30,923 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-28 23:51:30,924 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-28 23:51:30,924 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-28 23:51:30,924 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-28 23:51:30,924 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_6bbb7110-dd2e-4253-9dde-9c22bf9121b6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bbb7110-dd2e-4253-9dde-9c22bf9121b6/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 504de2e820c504d0b98f5b71c19407f1b43c0dd9338639fad4f2fe6ea2f6854f [2023-11-28 23:51:31,149 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-28 23:51:31,171 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-28 23:51:31,174 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-28 23:51:31,175 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-28 23:51:31,176 INFO L274 PluginConnector]: CDTParser initialized [2023-11-28 23:51:31,177 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bbb7110-dd2e-4253-9dde-9c22bf9121b6/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/weaver/parallel-barrier.wvr.c [2023-11-28 23:51:33,968 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-28 23:51:34,143 INFO L384 CDTParser]: Found 1 translation units. [2023-11-28 23:51:34,144 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bbb7110-dd2e-4253-9dde-9c22bf9121b6/sv-benchmarks/c/weaver/parallel-barrier.wvr.c [2023-11-28 23:51:34,152 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bbb7110-dd2e-4253-9dde-9c22bf9121b6/bin/uautomizer-verify-BQ2R08f2Ya/data/577a0a227/1e0bfc0abe4b425aad4e385a2678ce21/FLAGc26daa92b [2023-11-28 23:51:34,167 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bbb7110-dd2e-4253-9dde-9c22bf9121b6/bin/uautomizer-verify-BQ2R08f2Ya/data/577a0a227/1e0bfc0abe4b425aad4e385a2678ce21 [2023-11-28 23:51:34,169 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-28 23:51:34,171 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-28 23:51:34,172 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-28 23:51:34,172 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-28 23:51:34,177 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-28 23:51:34,178 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:51:34" (1/1) ... [2023-11-28 23:51:34,179 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13ec101b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:51:34, skipping insertion in model container [2023-11-28 23:51:34,179 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:51:34" (1/1) ... [2023-11-28 23:51:34,210 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-28 23:51:34,399 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-28 23:51:34,410 INFO L202 MainTranslator]: Completed pre-run [2023-11-28 23:51:34,441 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-28 23:51:34,451 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-28 23:51:34,451 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-28 23:51:34,459 INFO L206 MainTranslator]: Completed translation [2023-11-28 23:51:34,460 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:51:34 WrapperNode [2023-11-28 23:51:34,460 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-28 23:51:34,461 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-28 23:51:34,462 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-28 23:51:34,462 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-28 23:51:34,470 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:51:34" (1/1) ... [2023-11-28 23:51:34,480 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:51:34" (1/1) ... [2023-11-28 23:51:34,510 INFO L138 Inliner]: procedures = 25, calls = 99, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 288 [2023-11-28 23:51:34,511 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-28 23:51:34,512 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-28 23:51:34,512 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-28 23:51:34,512 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-28 23:51:34,524 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:51:34" (1/1) ... [2023-11-28 23:51:34,524 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:51:34" (1/1) ... [2023-11-28 23:51:34,530 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:51:34" (1/1) ... [2023-11-28 23:51:34,548 INFO L175 MemorySlicer]: Split 14 memory accesses to 7 slices as follows [2, 2, 2, 2, 2, 2, 2]. 14 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0, 0, 0]. The 6 writes are split as follows [0, 1, 1, 1, 1, 1, 1]. [2023-11-28 23:51:34,548 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:51:34" (1/1) ... [2023-11-28 23:51:34,549 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:51:34" (1/1) ... [2023-11-28 23:51:34,557 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:51:34" (1/1) ... [2023-11-28 23:51:34,560 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:51:34" (1/1) ... [2023-11-28 23:51:34,562 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:51:34" (1/1) ... [2023-11-28 23:51:34,564 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:51:34" (1/1) ... [2023-11-28 23:51:34,569 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-28 23:51:34,570 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-28 23:51:34,570 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-28 23:51:34,570 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-28 23:51:34,571 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:51:34" (1/1) ... [2023-11-28 23:51:34,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-28 23:51:34,587 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bbb7110-dd2e-4253-9dde-9c22bf9121b6/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:51:34,599 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bbb7110-dd2e-4253-9dde-9c22bf9121b6/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-28 23:51:34,602 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bbb7110-dd2e-4253-9dde-9c22bf9121b6/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-28 23:51:34,633 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-28 23:51:34,633 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-28 23:51:34,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-28 23:51:34,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-28 23:51:34,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-28 23:51:34,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-28 23:51:34,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-28 23:51:34,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-11-28 23:51:34,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2023-11-28 23:51:34,635 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-28 23:51:34,635 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-28 23:51:34,635 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-28 23:51:34,636 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-28 23:51:34,636 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-28 23:51:34,636 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-11-28 23:51:34,636 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2023-11-28 23:51:34,636 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-28 23:51:34,636 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-28 23:51:34,637 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-28 23:51:34,637 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-28 23:51:34,637 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-28 23:51:34,637 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-28 23:51:34,637 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-11-28 23:51:34,638 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-11-28 23:51:34,638 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-28 23:51:34,638 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-28 23:51:34,638 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-28 23:51:34,638 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-28 23:51:34,638 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-28 23:51:34,639 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-28 23:51:34,639 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-11-28 23:51:34,639 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2023-11-28 23:51:34,639 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2023-11-28 23:51:34,639 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2023-11-28 23:51:34,640 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2023-11-28 23:51:34,640 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-28 23:51:34,640 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-28 23:51:34,640 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-28 23:51:34,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-28 23:51:34,640 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-28 23:51:34,642 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-28 23:51:34,781 INFO L241 CfgBuilder]: Building ICFG [2023-11-28 23:51:34,784 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-28 23:51:35,120 INFO L282 CfgBuilder]: Performing block encoding [2023-11-28 23:51:35,433 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-28 23:51:35,433 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-28 23:51:35,434 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:51:35 BoogieIcfgContainer [2023-11-28 23:51:35,434 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-28 23:51:35,437 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-28 23:51:35,437 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-28 23:51:35,440 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-28 23:51:35,440 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 11:51:34" (1/3) ... [2023-11-28 23:51:35,441 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cb47ce2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 11:51:35, skipping insertion in model container [2023-11-28 23:51:35,441 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:51:34" (2/3) ... [2023-11-28 23:51:35,442 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cb47ce2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 11:51:35, skipping insertion in model container [2023-11-28 23:51:35,442 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:51:35" (3/3) ... [2023-11-28 23:51:35,443 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-barrier.wvr.c [2023-11-28 23:51:35,453 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-28 23:51:35,465 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-28 23:51:35,465 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2023-11-28 23:51:35,465 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-28 23:51:35,563 INFO L144 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2023-11-28 23:51:35,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 108 places, 93 transitions, 252 flow [2023-11-28 23:51:35,644 INFO L124 PetriNetUnfolderBase]: 4/79 cut-off events. [2023-11-28 23:51:35,644 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-28 23:51:35,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108 conditions, 79 events. 4/79 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 235 event pairs, 0 based on Foata normal form. 0/59 useless extension candidates. Maximal degree in co-relation 91. Up to 3 conditions per place. [2023-11-28 23:51:35,649 INFO L82 GeneralOperation]: Start removeDead. Operand has 108 places, 93 transitions, 252 flow [2023-11-28 23:51:35,654 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 92 places, 77 transitions, 199 flow [2023-11-28 23:51:35,665 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-28 23:51:35,672 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;@4625c22a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-28 23:51:35,672 INFO L358 AbstractCegarLoop]: Starting to check reachability of 42 error locations. [2023-11-28 23:51:35,679 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-28 23:51:35,679 INFO L124 PetriNetUnfolderBase]: 0/15 cut-off events. [2023-11-28 23:51:35,680 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-28 23:51:35,680 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:51:35,680 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:51:35,681 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-28 23:51:35,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:51:35,686 INFO L85 PathProgramCache]: Analyzing trace with hash 1900359562, now seen corresponding path program 1 times [2023-11-28 23:51:35,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:51:35,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379511610] [2023-11-28 23:51:35,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:51:35,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:51:35,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:51:35,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:51:35,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:51:35,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379511610] [2023-11-28 23:51:35,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379511610] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:51:35,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:51:35,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-28 23:51:35,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624462764] [2023-11-28 23:51:35,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:51:35,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 23:51:35,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:51:36,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 23:51:36,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-28 23:51:36,027 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 97 [2023-11-28 23:51:36,030 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 77 transitions, 199 flow. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 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) [2023-11-28 23:51:36,030 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:51:36,030 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 97 [2023-11-28 23:51:36,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:52:07,027 INFO L124 PetriNetUnfolderBase]: 358491/455362 cut-off events. [2023-11-28 23:52:07,028 INFO L125 PetriNetUnfolderBase]: For 20905/20905 co-relation queries the response was YES. [2023-11-28 23:52:07,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 939938 conditions, 455362 events. 358491/455362 cut-off events. For 20905/20905 co-relation queries the response was YES. Maximal size of possible extension queue 15133. Compared 3215552 event pairs, 190145 based on Foata normal form. 0/308749 useless extension candidates. Maximal degree in co-relation 937030. Up to 242118 conditions per place. [2023-11-28 23:52:09,999 INFO L140 encePairwiseOnDemand]: 93/97 looper letters, 100 selfloop transitions, 3 changer transitions 0/117 dead transitions. [2023-11-28 23:52:09,999 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 117 transitions, 509 flow [2023-11-28 23:52:10,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-28 23:52:10,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-28 23:52:10,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 184 transitions. [2023-11-28 23:52:10,010 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4742268041237113 [2023-11-28 23:52:10,011 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 184 transitions. [2023-11-28 23:52:10,011 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 184 transitions. [2023-11-28 23:52:10,012 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:52:10,014 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 184 transitions. [2023-11-28 23:52:10,016 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 46.0) internal successors, (184), 4 states have internal predecessors, (184), 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) [2023-11-28 23:52:10,020 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 97.0) internal successors, (485), 5 states have internal predecessors, (485), 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) [2023-11-28 23:52:10,020 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 97.0) internal successors, (485), 5 states have internal predecessors, (485), 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) [2023-11-28 23:52:10,021 INFO L175 Difference]: Start difference. First operand has 92 places, 77 transitions, 199 flow. Second operand 4 states and 184 transitions. [2023-11-28 23:52:10,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 117 transitions, 509 flow [2023-11-28 23:52:31,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 117 transitions, 465 flow, removed 0 selfloop flow, removed 11 redundant places. [2023-11-28 23:52:31,198 INFO L231 Difference]: Finished difference. Result has 83 places, 76 transitions, 174 flow [2023-11-28 23:52:31,200 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=174, PETRI_PLACES=83, PETRI_TRANSITIONS=76} [2023-11-28 23:52:31,203 INFO L281 CegarLoopForPetriNet]: 92 programPoint places, -9 predicate places. [2023-11-28 23:52:31,203 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 76 transitions, 174 flow [2023-11-28 23:52:31,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 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) [2023-11-28 23:52:31,204 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:52:31,204 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:52:31,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-28 23:52:31,204 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-28 23:52:31,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:52:31,205 INFO L85 PathProgramCache]: Analyzing trace with hash 1900359563, now seen corresponding path program 1 times [2023-11-28 23:52:31,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:52:31,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854660813] [2023-11-28 23:52:31,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:52:31,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:52:31,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:52:31,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:52:31,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:52:31,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854660813] [2023-11-28 23:52:31,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854660813] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:52:31,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:52:31,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 23:52:31,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401616872] [2023-11-28 23:52:31,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:52:31,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-28 23:52:31,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:52:31,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-28 23:52:31,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-28 23:52:31,362 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 97 [2023-11-28 23:52:31,363 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 76 transitions, 174 flow. Second operand has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 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) [2023-11-28 23:52:31,363 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:52:31,363 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 97 [2023-11-28 23:52:31,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:53:02,261 INFO L124 PetriNetUnfolderBase]: 418879/541154 cut-off events. [2023-11-28 23:53:02,261 INFO L125 PetriNetUnfolderBase]: For 16184/16184 co-relation queries the response was YES. [2023-11-28 23:53:03,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1090437 conditions, 541154 events. 418879/541154 cut-off events. For 16184/16184 co-relation queries the response was YES. Maximal size of possible extension queue 18535. Compared 4034662 event pairs, 20169 based on Foata normal form. 8120/400820 useless extension candidates. Maximal degree in co-relation 1086384. Up to 233174 conditions per place. [2023-11-28 23:53:05,109 INFO L140 encePairwiseOnDemand]: 86/97 looper letters, 314 selfloop transitions, 14 changer transitions 0/342 dead transitions. [2023-11-28 23:53:05,110 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 342 transitions, 1430 flow [2023-11-28 23:53:05,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-28 23:53:05,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-28 23:53:05,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 513 transitions. [2023-11-28 23:53:05,115 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5876288659793815 [2023-11-28 23:53:05,115 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 513 transitions. [2023-11-28 23:53:05,115 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 513 transitions. [2023-11-28 23:53:05,116 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:53:05,116 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 513 transitions. [2023-11-28 23:53:05,118 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 57.0) internal successors, (513), 9 states have internal predecessors, (513), 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) [2023-11-28 23:53:05,122 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 97.0) internal successors, (970), 10 states have internal predecessors, (970), 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) [2023-11-28 23:53:05,123 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 97.0) internal successors, (970), 10 states have internal predecessors, (970), 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) [2023-11-28 23:53:05,123 INFO L175 Difference]: Start difference. First operand has 83 places, 76 transitions, 174 flow. Second operand 9 states and 513 transitions. [2023-11-28 23:53:05,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 342 transitions, 1430 flow [2023-11-28 23:53:27,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 342 transitions, 1420 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-28 23:53:27,852 INFO L231 Difference]: Finished difference. Result has 94 places, 88 transitions, 271 flow [2023-11-28 23:53:27,853 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=271, PETRI_PLACES=94, PETRI_TRANSITIONS=88} [2023-11-28 23:53:27,853 INFO L281 CegarLoopForPetriNet]: 92 programPoint places, 2 predicate places. [2023-11-28 23:53:27,853 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 88 transitions, 271 flow [2023-11-28 23:53:27,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 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) [2023-11-28 23:53:27,854 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:53:27,854 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:53:27,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-28 23:53:27,854 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-28 23:53:27,854 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:53:27,854 INFO L85 PathProgramCache]: Analyzing trace with hash 880119367, now seen corresponding path program 1 times [2023-11-28 23:53:27,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:53:27,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545440056] [2023-11-28 23:53:27,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:53:27,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:53:27,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:53:27,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:53:27,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:53:27,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545440056] [2023-11-28 23:53:27,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545440056] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:53:27,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:53:27,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-28 23:53:27,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034994378] [2023-11-28 23:53:27,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:53:27,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 23:53:27,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:53:27,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 23:53:27,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-28 23:53:27,921 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 97 [2023-11-28 23:53:27,922 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 88 transitions, 271 flow. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 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) [2023-11-28 23:53:27,922 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:53:27,922 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 97 [2023-11-28 23:53:27,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:54:02,492 INFO L124 PetriNetUnfolderBase]: 411613/525828 cut-off events. [2023-11-28 23:54:02,492 INFO L125 PetriNetUnfolderBase]: For 153170/169530 co-relation queries the response was YES. [2023-11-28 23:54:03,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1169771 conditions, 525828 events. 411613/525828 cut-off events. For 153170/169530 co-relation queries the response was YES. Maximal size of possible extension queue 17289. Compared 3738237 event pairs, 197899 based on Foata normal form. 11496/425994 useless extension candidates. Maximal degree in co-relation 1161754. Up to 263510 conditions per place. [2023-11-28 23:54:05,537 INFO L140 encePairwiseOnDemand]: 93/97 looper letters, 108 selfloop transitions, 3 changer transitions 0/128 dead transitions. [2023-11-28 23:54:05,537 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 128 transitions, 599 flow [2023-11-28 23:54:05,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-28 23:54:05,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-28 23:54:05,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 182 transitions. [2023-11-28 23:54:05,539 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4690721649484536 [2023-11-28 23:54:05,539 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 182 transitions. [2023-11-28 23:54:05,539 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 182 transitions. [2023-11-28 23:54:05,539 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:54:05,539 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 182 transitions. [2023-11-28 23:54:05,540 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 45.5) internal successors, (182), 4 states have internal predecessors, (182), 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) [2023-11-28 23:54:05,541 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 97.0) internal successors, (485), 5 states have internal predecessors, (485), 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) [2023-11-28 23:54:05,542 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 97.0) internal successors, (485), 5 states have internal predecessors, (485), 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) [2023-11-28 23:54:05,542 INFO L175 Difference]: Start difference. First operand has 94 places, 88 transitions, 271 flow. Second operand 4 states and 182 transitions. [2023-11-28 23:54:05,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 128 transitions, 599 flow [2023-11-28 23:54:15,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 128 transitions, 597 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-28 23:54:15,146 INFO L231 Difference]: Finished difference. Result has 95 places, 87 transitions, 273 flow [2023-11-28 23:54:15,146 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=267, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=273, PETRI_PLACES=95, PETRI_TRANSITIONS=87} [2023-11-28 23:54:15,147 INFO L281 CegarLoopForPetriNet]: 92 programPoint places, 3 predicate places. [2023-11-28 23:54:15,147 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 87 transitions, 273 flow [2023-11-28 23:54:15,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 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) [2023-11-28 23:54:15,147 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:54:15,147 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:54:15,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-28 23:54:15,147 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread5Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-28 23:54:15,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:54:15,148 INFO L85 PathProgramCache]: Analyzing trace with hash 1913822468, now seen corresponding path program 1 times [2023-11-28 23:54:15,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:54:15,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381833660] [2023-11-28 23:54:15,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:54:15,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:54:15,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:54:15,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:54:15,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:54:15,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381833660] [2023-11-28 23:54:15,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381833660] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:54:15,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:54:15,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-28 23:54:15,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977087672] [2023-11-28 23:54:15,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:54:15,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 23:54:15,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:54:15,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 23:54:15,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-28 23:54:15,209 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 97 [2023-11-28 23:54:15,210 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 87 transitions, 273 flow. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 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) [2023-11-28 23:54:15,210 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:54:15,210 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 97 [2023-11-28 23:54:15,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand