./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread/reorder_2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b 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_e6e24443-b7a6-4308-bd4f-c2d44dc2b8fa/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e24443-b7a6-4308-bd4f-c2d44dc2b8fa/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e24443-b7a6-4308-bd4f-c2d44dc2b8fa/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e24443-b7a6-4308-bd4f-c2d44dc2b8fa/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/reorder_2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e24443-b7a6-4308-bd4f-c2d44dc2b8fa/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e24443-b7a6-4308-bd4f-c2d44dc2b8fa/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b8118921f4e94a266cc060fbf2fdaa97ed8f96343f174115bf05a8f09a1b77a8 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 23:01:07,636 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 23:01:07,755 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e24443-b7a6-4308-bd4f-c2d44dc2b8fa/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 23:01:07,766 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 23:01:07,769 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 23:01:07,806 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 23:01:07,808 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 23:01:07,809 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 23:01:07,810 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 23:01:07,815 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 23:01:07,817 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 23:01:07,817 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 23:01:07,818 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 23:01:07,820 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 23:01:07,821 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 23:01:07,821 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 23:01:07,822 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 23:01:07,822 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 23:01:07,822 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 23:01:07,823 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 23:01:07,824 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 23:01:07,829 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 23:01:07,829 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 23:01:07,830 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 23:01:07,830 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 23:01:07,831 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 23:01:07,832 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 23:01:07,833 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 23:01:07,833 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 23:01:07,834 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 23:01:07,835 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 23:01:07,836 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 23:01:07,836 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 23:01:07,836 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 23:01:07,837 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 23:01:07,837 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 23:01:07,837 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 23:01:07,838 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 23:01:07,839 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 23:01:07,839 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_e6e24443-b7a6-4308-bd4f-c2d44dc2b8fa/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e24443-b7a6-4308-bd4f-c2d44dc2b8fa/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b8118921f4e94a266cc060fbf2fdaa97ed8f96343f174115bf05a8f09a1b77a8 [2023-11-06 23:01:08,175 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 23:01:08,198 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 23:01:08,201 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 23:01:08,202 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 23:01:08,203 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 23:01:08,205 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e24443-b7a6-4308-bd4f-c2d44dc2b8fa/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/pthread/reorder_2.i [2023-11-06 23:01:11,269 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 23:01:11,709 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 23:01:11,710 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e24443-b7a6-4308-bd4f-c2d44dc2b8fa/sv-benchmarks/c/pthread/reorder_2.i [2023-11-06 23:01:11,733 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e24443-b7a6-4308-bd4f-c2d44dc2b8fa/bin/uautomizer-verify-WvqO1wxjHP/data/8033318d2/1b49e4a7124e4670a6daace58fead021/FLAG0811a8144 [2023-11-06 23:01:11,746 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e24443-b7a6-4308-bd4f-c2d44dc2b8fa/bin/uautomizer-verify-WvqO1wxjHP/data/8033318d2/1b49e4a7124e4670a6daace58fead021 [2023-11-06 23:01:11,749 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 23:01:11,750 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 23:01:11,752 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 23:01:11,752 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 23:01:11,764 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 23:01:11,765 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:01:11" (1/1) ... [2023-11-06 23:01:11,766 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64c43132 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:01:11, skipping insertion in model container [2023-11-06 23:01:11,767 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:01:11" (1/1) ... [2023-11-06 23:01:11,822 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 23:01:12,526 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_e6e24443-b7a6-4308-bd4f-c2d44dc2b8fa/sv-benchmarks/c/pthread/reorder_2.i[59859,59872] [2023-11-06 23:01:12,543 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 23:01:12,557 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 23:01:12,663 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_e6e24443-b7a6-4308-bd4f-c2d44dc2b8fa/sv-benchmarks/c/pthread/reorder_2.i[59859,59872] [2023-11-06 23:01:12,671 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 23:01:12,790 WARN L672 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 23:01:12,798 INFO L206 MainTranslator]: Completed translation [2023-11-06 23:01:12,799 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:01:12 WrapperNode [2023-11-06 23:01:12,799 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 23:01:12,800 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 23:01:12,801 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 23:01:12,801 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 23:01:12,809 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:01:12" (1/1) ... [2023-11-06 23:01:12,852 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:01:12" (1/1) ... [2023-11-06 23:01:12,895 INFO L138 Inliner]: procedures = 372, calls = 46, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 165 [2023-11-06 23:01:12,896 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 23:01:12,898 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 23:01:12,898 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 23:01:12,898 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 23:01:12,908 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:01:12" (1/1) ... [2023-11-06 23:01:12,908 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:01:12" (1/1) ... [2023-11-06 23:01:12,912 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:01:12" (1/1) ... [2023-11-06 23:01:12,913 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:01:12" (1/1) ... [2023-11-06 23:01:12,922 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:01:12" (1/1) ... [2023-11-06 23:01:12,926 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:01:12" (1/1) ... [2023-11-06 23:01:12,929 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:01:12" (1/1) ... [2023-11-06 23:01:12,931 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:01:12" (1/1) ... [2023-11-06 23:01:12,935 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 23:01:12,936 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 23:01:12,936 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 23:01:12,937 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 23:01:12,938 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:01:12" (1/1) ... [2023-11-06 23:01:12,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 23:01:12,960 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e24443-b7a6-4308-bd4f-c2d44dc2b8fa/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:01:12,974 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e24443-b7a6-4308-bd4f-c2d44dc2b8fa/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 23:01:12,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e24443-b7a6-4308-bd4f-c2d44dc2b8fa/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 23:01:13,047 INFO L130 BoogieDeclarations]: Found specification of procedure fprintf [2023-11-06 23:01:13,048 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 23:01:13,048 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-06 23:01:13,048 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 23:01:13,048 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 23:01:13,048 INFO L130 BoogieDeclarations]: Found specification of procedure setThread [2023-11-06 23:01:13,049 INFO L138 BoogieDeclarations]: Found implementation of procedure setThread [2023-11-06 23:01:13,049 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 23:01:13,049 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 23:01:13,049 INFO L130 BoogieDeclarations]: Found specification of procedure checkThread [2023-11-06 23:01:13,049 INFO L138 BoogieDeclarations]: Found implementation of procedure checkThread [2023-11-06 23:01:13,050 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 23:01:13,050 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 23:01:13,050 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 23:01:13,052 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-06 23:01:13,254 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 23:01:13,260 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 23:01:13,660 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 23:01:13,670 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 23:01:13,670 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-06 23:01:13,673 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:01:13 BoogieIcfgContainer [2023-11-06 23:01:13,674 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 23:01:13,676 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 23:01:13,677 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 23:01:13,680 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 23:01:13,681 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 11:01:11" (1/3) ... [2023-11-06 23:01:13,682 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19cfbca3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:01:13, skipping insertion in model container [2023-11-06 23:01:13,682 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:01:12" (2/3) ... [2023-11-06 23:01:13,682 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19cfbca3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:01:13, skipping insertion in model container [2023-11-06 23:01:13,682 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:01:13" (3/3) ... [2023-11-06 23:01:13,684 INFO L112 eAbstractionObserver]: Analyzing ICFG reorder_2.i [2023-11-06 23:01:13,694 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 23:01:13,710 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 23:01:13,711 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 23:01:13,711 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 23:01:13,785 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-06 23:01:13,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 177 places, 189 transitions, 398 flow [2023-11-06 23:01:13,952 INFO L124 PetriNetUnfolderBase]: 37/380 cut-off events. [2023-11-06 23:01:13,953 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-06 23:01:13,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 397 conditions, 380 events. 37/380 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1349 event pairs, 0 based on Foata normal form. 0/335 useless extension candidates. Maximal degree in co-relation 204. Up to 8 conditions per place. [2023-11-06 23:01:13,963 INFO L82 GeneralOperation]: Start removeDead. Operand has 177 places, 189 transitions, 398 flow [2023-11-06 23:01:13,970 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 177 places, 187 transitions, 388 flow [2023-11-06 23:01:13,974 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 23:01:13,986 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 177 places, 187 transitions, 388 flow [2023-11-06 23:01:13,989 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 177 places, 187 transitions, 388 flow [2023-11-06 23:01:13,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 177 places, 187 transitions, 388 flow [2023-11-06 23:01:14,059 INFO L124 PetriNetUnfolderBase]: 31/352 cut-off events. [2023-11-06 23:01:14,060 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-06 23:01:14,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 365 conditions, 352 events. 31/352 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1185 event pairs, 0 based on Foata normal form. 0/309 useless extension candidates. Maximal degree in co-relation 208. Up to 8 conditions per place. [2023-11-06 23:01:14,068 INFO L119 LiptonReduction]: Number of co-enabled transitions 2510 [2023-11-06 23:01:31,695 INFO L134 LiptonReduction]: Checked pairs total: 3001 [2023-11-06 23:01:31,695 INFO L136 LiptonReduction]: Total number of compositions: 207 [2023-11-06 23:01:31,712 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 23:01:31,720 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@387b3f18, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 23:01:31,720 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-06 23:01:31,729 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 23:01:31,729 INFO L124 PetriNetUnfolderBase]: 0/11 cut-off events. [2023-11-06 23:01:31,729 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 23:01:31,730 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:01:31,730 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 23:01:31,731 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 23:01:31,737 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:01:31,737 INFO L85 PathProgramCache]: Analyzing trace with hash 666772057, now seen corresponding path program 1 times [2023-11-06 23:01:31,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:01:31,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560363601] [2023-11-06 23:01:31,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:01:31,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:01:32,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:01:32,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:01:32,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:01:32,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560363601] [2023-11-06 23:01:32,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560363601] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:01:32,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:01:32,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 23:01:32,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935532917] [2023-11-06 23:01:32,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:01:32,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:01:32,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:01:32,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:01:32,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:01:32,381 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 396 [2023-11-06 23:01:32,384 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 23 transitions, 60 flow. Second operand has 3 states, 3 states have (on average 169.66666666666666) internal successors, (509), 3 states have internal predecessors, (509), 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) [2023-11-06 23:01:32,385 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:01:32,385 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 396 [2023-11-06 23:01:32,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:01:32,499 INFO L124 PetriNetUnfolderBase]: 118/270 cut-off events. [2023-11-06 23:01:32,499 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2023-11-06 23:01:32,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 557 conditions, 270 events. 118/270 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1104 event pairs, 29 based on Foata normal form. 0/193 useless extension candidates. Maximal degree in co-relation 380. Up to 201 conditions per place. [2023-11-06 23:01:32,503 INFO L140 encePairwiseOnDemand]: 393/396 looper letters, 31 selfloop transitions, 2 changer transitions 0/35 dead transitions. [2023-11-06 23:01:32,503 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 35 transitions, 153 flow [2023-11-06 23:01:32,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:01:32,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 23:01:32,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 538 transitions. [2023-11-06 23:01:32,524 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45286195286195285 [2023-11-06 23:01:32,525 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 538 transitions. [2023-11-06 23:01:32,526 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 538 transitions. [2023-11-06 23:01:32,529 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:01:32,531 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 538 transitions. [2023-11-06 23:01:32,537 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 179.33333333333334) internal successors, (538), 3 states have internal predecessors, (538), 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) [2023-11-06 23:01:32,545 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 396.0) internal successors, (1584), 4 states have internal predecessors, (1584), 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) [2023-11-06 23:01:32,547 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 396.0) internal successors, (1584), 4 states have internal predecessors, (1584), 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) [2023-11-06 23:01:32,549 INFO L175 Difference]: Start difference. First operand has 26 places, 23 transitions, 60 flow. Second operand 3 states and 538 transitions. [2023-11-06 23:01:32,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 35 transitions, 153 flow [2023-11-06 23:01:32,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 35 transitions, 153 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 23:01:32,555 INFO L231 Difference]: Finished difference. Result has 29 places, 23 transitions, 68 flow [2023-11-06 23:01:32,558 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=396, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=68, PETRI_PLACES=29, PETRI_TRANSITIONS=23} [2023-11-06 23:01:32,562 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 3 predicate places. [2023-11-06 23:01:32,562 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 23 transitions, 68 flow [2023-11-06 23:01:32,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 169.66666666666666) internal successors, (509), 3 states have internal predecessors, (509), 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) [2023-11-06 23:01:32,563 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:01:32,563 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-06 23:01:32,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 23:01:32,564 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 23:01:32,565 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:01:32,565 INFO L85 PathProgramCache]: Analyzing trace with hash -795832555, now seen corresponding path program 1 times [2023-11-06 23:01:32,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:01:32,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663022695] [2023-11-06 23:01:32,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:01:32,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:01:32,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:01:32,623 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 23:01:32,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:01:32,709 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 23:01:32,709 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-06 23:01:32,711 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2023-11-06 23:01:32,713 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2023-11-06 23:01:32,714 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-11-06 23:01:32,714 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2023-11-06 23:01:32,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 23:01:32,715 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-06 23:01:32,718 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-06 23:01:32,718 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-06 23:01:32,747 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-11-06 23:01:32,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 198 places, 211 transitions, 466 flow [2023-11-06 23:01:32,959 INFO L124 PetriNetUnfolderBase]: 149/1197 cut-off events. [2023-11-06 23:01:32,959 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2023-11-06 23:01:32,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1286 conditions, 1197 events. 149/1197 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 6610 event pairs, 2 based on Foata normal form. 0/1055 useless extension candidates. Maximal degree in co-relation 695. Up to 32 conditions per place. [2023-11-06 23:01:32,968 INFO L82 GeneralOperation]: Start removeDead. Operand has 198 places, 211 transitions, 466 flow [2023-11-06 23:01:32,974 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 198 places, 211 transitions, 466 flow [2023-11-06 23:01:32,974 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 23:01:32,975 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 198 places, 211 transitions, 466 flow [2023-11-06 23:01:32,975 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 198 places, 211 transitions, 466 flow [2023-11-06 23:01:32,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 198 places, 211 transitions, 466 flow [2023-11-06 23:01:33,151 INFO L124 PetriNetUnfolderBase]: 149/1197 cut-off events. [2023-11-06 23:01:33,151 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2023-11-06 23:01:33,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1286 conditions, 1197 events. 149/1197 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 6610 event pairs, 2 based on Foata normal form. 0/1055 useless extension candidates. Maximal degree in co-relation 695. Up to 32 conditions per place. [2023-11-06 23:01:33,182 INFO L119 LiptonReduction]: Number of co-enabled transitions 6360 [2023-11-06 23:01:50,388 INFO L134 LiptonReduction]: Checked pairs total: 11691 [2023-11-06 23:01:50,389 INFO L136 LiptonReduction]: Total number of compositions: 220 [2023-11-06 23:01:50,396 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 23:01:50,404 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@387b3f18, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 23:01:50,405 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-11-06 23:01:50,410 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 23:01:50,411 INFO L124 PetriNetUnfolderBase]: 0/12 cut-off events. [2023-11-06 23:01:50,411 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 23:01:50,412 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:01:50,412 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 23:01:50,413 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-06 23:01:50,414 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:01:50,415 INFO L85 PathProgramCache]: Analyzing trace with hash 1097045820, now seen corresponding path program 1 times [2023-11-06 23:01:50,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:01:50,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54625267] [2023-11-06 23:01:50,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:01:50,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:01:50,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:01:50,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:01:50,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:01:50,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54625267] [2023-11-06 23:01:50,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54625267] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:01:50,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:01:50,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 23:01:50,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462696946] [2023-11-06 23:01:50,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:01:50,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:01:50,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:01:50,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:01:50,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:01:50,568 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 431 [2023-11-06 23:01:50,570 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 39 transitions, 122 flow. Second operand has 3 states, 3 states have (on average 180.66666666666666) internal successors, (542), 3 states have internal predecessors, (542), 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) [2023-11-06 23:01:50,570 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:01:50,570 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 431 [2023-11-06 23:01:50,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:01:51,511 INFO L124 PetriNetUnfolderBase]: 4447/6838 cut-off events. [2023-11-06 23:01:51,511 INFO L125 PetriNetUnfolderBase]: For 1290/1290 co-relation queries the response was YES. [2023-11-06 23:01:51,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14147 conditions, 6838 events. 4447/6838 cut-off events. For 1290/1290 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 36991 event pairs, 1433 based on Foata normal form. 0/5176 useless extension candidates. Maximal degree in co-relation 10034. Up to 6226 conditions per place. [2023-11-06 23:01:51,561 INFO L140 encePairwiseOnDemand]: 426/431 looper letters, 53 selfloop transitions, 3 changer transitions 0/62 dead transitions. [2023-11-06 23:01:51,562 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 62 transitions, 305 flow [2023-11-06 23:01:51,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:01:51,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 23:01:51,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 595 transitions. [2023-11-06 23:01:51,568 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46017014694508895 [2023-11-06 23:01:51,568 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 595 transitions. [2023-11-06 23:01:51,568 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 595 transitions. [2023-11-06 23:01:51,569 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:01:51,569 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 595 transitions. [2023-11-06 23:01:51,573 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 198.33333333333334) internal successors, (595), 3 states have internal predecessors, (595), 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) [2023-11-06 23:01:51,578 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 431.0) internal successors, (1724), 4 states have internal predecessors, (1724), 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) [2023-11-06 23:01:51,580 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 431.0) internal successors, (1724), 4 states have internal predecessors, (1724), 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) [2023-11-06 23:01:51,580 INFO L175 Difference]: Start difference. First operand has 40 places, 39 transitions, 122 flow. Second operand 3 states and 595 transitions. [2023-11-06 23:01:51,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 62 transitions, 305 flow [2023-11-06 23:01:51,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 62 transitions, 305 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 23:01:51,596 INFO L231 Difference]: Finished difference. Result has 43 places, 41 transitions, 143 flow [2023-11-06 23:01:51,597 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=431, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=143, PETRI_PLACES=43, PETRI_TRANSITIONS=41} [2023-11-06 23:01:51,599 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 3 predicate places. [2023-11-06 23:01:51,599 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 41 transitions, 143 flow [2023-11-06 23:01:51,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 180.66666666666666) internal successors, (542), 3 states have internal predecessors, (542), 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) [2023-11-06 23:01:51,601 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:01:51,601 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:01:51,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 23:01:51,601 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-06 23:01:51,602 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:01:51,602 INFO L85 PathProgramCache]: Analyzing trace with hash 1688610940, now seen corresponding path program 1 times [2023-11-06 23:01:51,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:01:51,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421738440] [2023-11-06 23:01:51,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:01:51,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:01:51,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:01:51,751 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 23:01:51,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:01:51,811 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 23:01:51,812 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-06 23:01:51,812 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2023-11-06 23:01:51,812 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2023-11-06 23:01:51,813 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2023-11-06 23:01:51,813 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2023-11-06 23:01:51,818 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2023-11-06 23:01:51,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 23:01:51,818 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-06 23:01:51,822 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-11-06 23:01:51,823 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-06 23:01:51,884 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 11:01:51 BasicIcfg [2023-11-06 23:01:51,884 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-06 23:01:51,885 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-06 23:01:51,885 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-06 23:01:51,885 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-06 23:01:51,886 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:01:13" (3/4) ... [2023-11-06 23:01:51,888 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-06 23:01:51,889 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-06 23:01:51,890 INFO L158 Benchmark]: Toolchain (without parser) took 40139.30ms. Allocated memory was 176.2MB in the beginning and 224.4MB in the end (delta: 48.2MB). Free memory was 145.2MB in the beginning and 147.1MB in the end (delta: -1.9MB). Peak memory consumption was 47.2MB. Max. memory is 16.1GB. [2023-11-06 23:01:51,890 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 113.2MB. Free memory is still 62.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 23:01:51,891 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1047.71ms. Allocated memory is still 176.2MB. Free memory was 144.8MB in the beginning and 104.8MB in the end (delta: 40.0MB). Peak memory consumption was 39.8MB. Max. memory is 16.1GB. [2023-11-06 23:01:51,891 INFO L158 Benchmark]: Boogie Procedure Inliner took 96.78ms. Allocated memory is still 176.2MB. Free memory was 104.8MB in the beginning and 102.0MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 23:01:51,892 INFO L158 Benchmark]: Boogie Preprocessor took 37.77ms. Allocated memory is still 176.2MB. Free memory was 102.0MB in the beginning and 100.1MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 23:01:51,892 INFO L158 Benchmark]: RCFGBuilder took 737.72ms. Allocated memory is still 176.2MB. Free memory was 100.1MB in the beginning and 131.6MB in the end (delta: -31.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-06 23:01:51,893 INFO L158 Benchmark]: TraceAbstraction took 38208.21ms. Allocated memory was 176.2MB in the beginning and 224.4MB in the end (delta: 48.2MB). Free memory was 130.9MB in the beginning and 147.1MB in the end (delta: -16.3MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2023-11-06 23:01:51,893 INFO L158 Benchmark]: Witness Printer took 3.98ms. Allocated memory is still 224.4MB. Free memory is still 147.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 23:01:51,896 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 113.2MB. Free memory is still 62.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1047.71ms. Allocated memory is still 176.2MB. Free memory was 144.8MB in the beginning and 104.8MB in the end (delta: 40.0MB). Peak memory consumption was 39.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 96.78ms. Allocated memory is still 176.2MB. Free memory was 104.8MB in the beginning and 102.0MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 37.77ms. Allocated memory is still 176.2MB. Free memory was 102.0MB in the beginning and 100.1MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 737.72ms. Allocated memory is still 176.2MB. Free memory was 100.1MB in the beginning and 131.6MB in the end (delta: -31.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 38208.21ms. Allocated memory was 176.2MB in the beginning and 224.4MB in the end (delta: 48.2MB). Free memory was 130.9MB in the beginning and 147.1MB in the end (delta: -16.3MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Witness Printer took 3.98ms. Allocated memory is still 224.4MB. Free memory is still 147.1MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 17.7s, 177 PlacesBefore, 26 PlacesAfterwards, 187 TransitionsBefore, 23 TransitionsAfterwards, 2510 CoEnabledTransitionPairs, 8 FixpointIterations, 69 TrivialSequentialCompositions, 89 ConcurrentSequentialCompositions, 10 TrivialYvCompositions, 26 ConcurrentYvCompositions, 13 ChoiceCompositions, 207 TotalNumberOfCompositions, 3001 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2336, independent: 2302, independent conditional: 0, independent unconditional: 2302, dependent: 34, dependent conditional: 0, dependent unconditional: 34, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1410, independent: 1400, independent conditional: 0, independent unconditional: 1400, dependent: 10, dependent conditional: 0, dependent unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2336, independent: 902, independent conditional: 0, independent unconditional: 902, dependent: 24, dependent conditional: 0, dependent unconditional: 24, unknown: 1410, unknown conditional: 0, unknown unconditional: 1410] , Statistics on independence cache: Total cache size (in pairs): 27, Positive cache size: 25, Positive conditional cache size: 0, Positive unconditional cache size: 25, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 17.4s, 198 PlacesBefore, 40 PlacesAfterwards, 211 TransitionsBefore, 39 TransitionsAfterwards, 6360 CoEnabledTransitionPairs, 8 FixpointIterations, 72 TrivialSequentialCompositions, 91 ConcurrentSequentialCompositions, 11 TrivialYvCompositions, 32 ConcurrentYvCompositions, 14 ChoiceCompositions, 220 TotalNumberOfCompositions, 11691 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 8983, independent: 8893, independent conditional: 0, independent unconditional: 8893, dependent: 90, dependent conditional: 0, dependent unconditional: 90, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 3843, independent: 3820, independent conditional: 0, independent unconditional: 3820, dependent: 23, dependent conditional: 0, dependent unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 8983, independent: 5073, independent conditional: 0, independent unconditional: 5073, dependent: 67, dependent conditional: 0, dependent unconditional: 67, unknown: 3843, unknown conditional: 0, unknown unconditional: 3843] , Statistics on independence cache: Total cache size (in pairs): 134, Positive cache size: 127, Positive conditional cache size: 0, Positive unconditional cache size: 127, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - UnprovableResult [Line: 1295]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of sscanf at line 1251. Possible FailurePath: [L1236] 0 static int iSet = 2; [L1237] 0 static int iCheck = 2; [L1238] 0 static int a = 0; [L1239] 0 static int b = 0; [L1245] 0 int i, err; [L1246] COND TRUE 0 argc != 1 [L1247] COND FALSE 0 !(argc != 3) [L1251] 0 argv[1] [L1252] 0 argv[2] [L1255] EXPR 0 \read(iSet) [L1255] 0 iSet > 100000 || iCheck > 100000 [L1255] EXPR 0 \read(iCheck) [L1255] 0 iSet > 100000 || iCheck > 100000 [L1255] COND FALSE 0 !(iSet > 100000 || iCheck > 100000) [L1258] EXPR 0 \read(iSet) [L1258] 0 pthread_t setPool[iSet]; [L1259] EXPR 0 \read(iCheck) [L1259] 0 pthread_t checkPool[iCheck]; [L1260] 0 i = 0 VAL [\old(argc)=3, \read(iCheck)=2, \read(iSet)=1, a=0, argc=3, argv={57:56}, argv={57:56}, b=0, checkPool={11:0}, i=0, iCheck={10:0}, iSet={9:0}, setPool={13:0}] [L1260] EXPR 0 \read(iSet) [L1260] COND TRUE 0 i < iSet [L1261] EXPR, FCALL, FORK 0 pthread_create(&setPool[i], ((void *)0), &setThread, ((void *)0)) VAL [\old(argc)=3, \read(iCheck)=2, \read(iSet)=1, a=0, argc=3, argv={57:56}, argv={57:56}, b=0, checkPool={11:0}, i=0, iCheck={10:0}, iSet={9:0}, param={0:0}, pthread_create(&setPool[i], ((void *)0), &setThread, ((void *)0))=0, setPool={13:0}] [L1261] EXPR 0 err = pthread_create(&setPool[i], ((void *)0), &setThread, ((void *)0)) VAL [\old(argc)=3, \read(iCheck)=2, \read(iSet)=1, a=0, argc=3, argv={57:56}, argv={57:56}, b=0, checkPool={11:0}, err=0, i=0, iCheck={10:0}, iSet={9:0}, param={0:0}, pthread_create(&setPool[i], ((void *)0), &setThread, ((void *)0))=0, pthread_create(&setPool[i], ((void *)0), &setThread, ((void *)0))=0, setPool={13:0}] [L1261] COND FALSE 0 !(0 != (err = pthread_create(&setPool[i], ((void *)0), &setThread, ((void *)0)))) [L1260] 0 i++ VAL [\old(argc)=3, \read(iCheck)=2, \read(iSet)=1, a=0, argc=3, argv={57:56}, argv={57:56}, b=0, checkPool={11:0}, err=0, fprintf(stderr, "Error [%d] found creating set thread.\n", err)=50, i=1, iCheck={10:0}, iSet={9:0}, param={0:0}, setPool={13:0}] [L1260] EXPR 0 \read(iSet) [L1260] COND FALSE 0 !(i < iSet) [L1266] 0 i = 0 VAL [\old(argc)=3, \read(iCheck)=2, \read(iSet)=1, a=0, argc=3, argv={57:56}, argv={57:56}, b=0, checkPool={11:0}, err=0, fprintf(stderr, "Error [%d] found creating set thread.\n", err)=50, i=0, iCheck={10:0}, iSet={9:0}, param={0:0}, setPool={13:0}] [L1266] EXPR 0 \read(iCheck) [L1266] COND TRUE 0 i < iCheck [L1267-L1268] FCALL, FORK 0 pthread_create(&checkPool[i], ((void *)0), &checkThread, ((void *)0)) VAL [\old(argc)=3, \read(iCheck)=2, \read(iSet)=1, a=0, argc=3, argv={57:56}, argv={57:56}, b=0, checkPool={11:0}, err=0, fprintf(stderr, "Error [%d] found creating set thread.\n", err)=50, i=0, iCheck={10:0}, iSet={9:0}, param={0:0}, param={0:0}, pthread_create(&checkPool[i], ((void *)0), &checkThread, ((void *)0))=1, setPool={13:0}] [L1288] 1 a = 1 VAL [a=1, b=0, iCheck={10:0}, iSet={9:0}, param={0:0}, param={0:0}, param={0:0}] [L1293] COND TRUE 2 ! ((a == 0 && b == 0) || (a == 1 && b == -1)) [L1295] 2 reach_error() VAL [a=1, b=0, iCheck={10:0}, iSet={9:0}, param={0:0}, param={0:0}, param={0:0}, param={0:0}] - UnprovableResult [Line: 1267]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 1261]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 190 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 18.9s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 17.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 18 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 12 mSDsluCounter, 2 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 46 IncrementalHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 2 mSDtfsCounter, 46 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=68occurred in iteration=1, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 4 ConstructedInterpolants, 0 QuantifiedInterpolants, 28 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 2 thread instances CFG has 7 procedures, 207 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 19.1s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 17.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 37 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 23 mSDsluCounter, 2 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 80 IncrementalHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 2 mSDtfsCounter, 80 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=143occurred in iteration=1, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 15 NumberOfCodeBlocks, 15 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 4 ConstructedInterpolants, 0 QuantifiedInterpolants, 28 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-06 23:01:51,927 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e24443-b7a6-4308-bd4f-c2d44dc2b8fa/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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_e6e24443-b7a6-4308-bd4f-c2d44dc2b8fa/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e24443-b7a6-4308-bd4f-c2d44dc2b8fa/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e24443-b7a6-4308-bd4f-c2d44dc2b8fa/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e24443-b7a6-4308-bd4f-c2d44dc2b8fa/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/reorder_2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e24443-b7a6-4308-bd4f-c2d44dc2b8fa/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e24443-b7a6-4308-bd4f-c2d44dc2b8fa/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b8118921f4e94a266cc060fbf2fdaa97ed8f96343f174115bf05a8f09a1b77a8 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 23:01:54,590 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 23:01:54,738 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e24443-b7a6-4308-bd4f-c2d44dc2b8fa/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-11-06 23:01:54,745 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 23:01:54,746 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 23:01:54,788 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 23:01:54,790 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 23:01:54,790 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 23:01:54,791 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 23:01:54,793 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 23:01:54,794 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 23:01:54,794 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 23:01:54,795 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 23:01:54,795 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 23:01:54,796 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 23:01:54,796 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 23:01:54,797 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 23:01:54,797 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 23:01:54,798 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 23:01:54,798 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 23:01:54,799 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 23:01:54,801 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 23:01:54,801 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-06 23:01:54,802 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-06 23:01:54,802 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 23:01:54,803 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 23:01:54,803 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 23:01:54,803 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 23:01:54,804 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 23:01:54,804 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 23:01:54,806 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 23:01:54,806 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 23:01:54,806 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 23:01:54,807 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 23:01:54,807 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-06 23:01:54,807 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-06 23:01:54,808 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 23:01:54,808 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 23:01:54,808 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 23:01:54,809 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 23:01:54,810 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-06 23:01:54,810 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 23:01:54,810 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_e6e24443-b7a6-4308-bd4f-c2d44dc2b8fa/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e24443-b7a6-4308-bd4f-c2d44dc2b8fa/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b8118921f4e94a266cc060fbf2fdaa97ed8f96343f174115bf05a8f09a1b77a8 [2023-11-06 23:01:55,203 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 23:01:55,224 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 23:01:55,227 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 23:01:55,228 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 23:01:55,232 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 23:01:55,234 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e24443-b7a6-4308-bd4f-c2d44dc2b8fa/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/pthread/reorder_2.i [2023-11-06 23:01:58,384 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 23:01:58,850 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 23:01:58,852 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e24443-b7a6-4308-bd4f-c2d44dc2b8fa/sv-benchmarks/c/pthread/reorder_2.i [2023-11-06 23:01:58,879 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e24443-b7a6-4308-bd4f-c2d44dc2b8fa/bin/uautomizer-verify-WvqO1wxjHP/data/1df0ca7d1/b509bb5ec7084286a022def7d7532b52/FLAGce2195107 [2023-11-06 23:01:58,897 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e24443-b7a6-4308-bd4f-c2d44dc2b8fa/bin/uautomizer-verify-WvqO1wxjHP/data/1df0ca7d1/b509bb5ec7084286a022def7d7532b52 [2023-11-06 23:01:58,900 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 23:01:58,901 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 23:01:58,903 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 23:01:58,903 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 23:01:58,917 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 23:01:58,918 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:01:58" (1/1) ... [2023-11-06 23:01:58,919 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37125963 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:01:58, skipping insertion in model container [2023-11-06 23:01:58,920 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:01:58" (1/1) ... [2023-11-06 23:01:59,027 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 23:02:00,030 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_e6e24443-b7a6-4308-bd4f-c2d44dc2b8fa/sv-benchmarks/c/pthread/reorder_2.i[59859,59872] [2023-11-06 23:02:00,035 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 23:02:00,052 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 23:02:00,145 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_e6e24443-b7a6-4308-bd4f-c2d44dc2b8fa/sv-benchmarks/c/pthread/reorder_2.i[59859,59872] [2023-11-06 23:02:00,146 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 23:02:00,365 WARN L672 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 23:02:00,373 INFO L206 MainTranslator]: Completed translation [2023-11-06 23:02:00,373 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:02:00 WrapperNode [2023-11-06 23:02:00,374 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 23:02:00,375 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 23:02:00,375 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 23:02:00,375 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 23:02:00,383 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:02:00" (1/1) ... [2023-11-06 23:02:00,431 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:02:00" (1/1) ... [2023-11-06 23:02:00,478 INFO L138 Inliner]: procedures = 376, calls = 46, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 159 [2023-11-06 23:02:00,478 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 23:02:00,479 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 23:02:00,479 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 23:02:00,480 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 23:02:00,489 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:02:00" (1/1) ... [2023-11-06 23:02:00,489 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:02:00" (1/1) ... [2023-11-06 23:02:00,509 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:02:00" (1/1) ... [2023-11-06 23:02:00,510 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:02:00" (1/1) ... [2023-11-06 23:02:00,521 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:02:00" (1/1) ... [2023-11-06 23:02:00,537 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:02:00" (1/1) ... [2023-11-06 23:02:00,541 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:02:00" (1/1) ... [2023-11-06 23:02:00,552 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:02:00" (1/1) ... [2023-11-06 23:02:00,557 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 23:02:00,558 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 23:02:00,558 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 23:02:00,558 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 23:02:00,559 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:02:00" (1/1) ... [2023-11-06 23:02:00,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 23:02:00,583 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e24443-b7a6-4308-bd4f-c2d44dc2b8fa/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:02:00,595 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e24443-b7a6-4308-bd4f-c2d44dc2b8fa/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 23:02:00,597 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e24443-b7a6-4308-bd4f-c2d44dc2b8fa/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 23:02:00,625 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-06 23:02:00,625 INFO L130 BoogieDeclarations]: Found specification of procedure fprintf [2023-11-06 23:02:00,625 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 23:02:00,626 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-06 23:02:00,626 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 23:02:00,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-06 23:02:00,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-06 23:02:00,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2023-11-06 23:02:00,627 INFO L130 BoogieDeclarations]: Found specification of procedure setThread [2023-11-06 23:02:00,627 INFO L138 BoogieDeclarations]: Found implementation of procedure setThread [2023-11-06 23:02:00,627 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 23:02:00,628 INFO L130 BoogieDeclarations]: Found specification of procedure checkThread [2023-11-06 23:02:00,628 INFO L138 BoogieDeclarations]: Found implementation of procedure checkThread [2023-11-06 23:02:00,628 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 23:02:00,628 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 23:02:00,630 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-06 23:02:00,798 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 23:02:00,800 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 23:02:01,166 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 23:02:01,176 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 23:02:01,176 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-06 23:02:01,179 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:02:01 BoogieIcfgContainer [2023-11-06 23:02:01,179 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 23:02:01,181 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 23:02:01,181 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 23:02:01,185 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 23:02:01,185 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 11:01:58" (1/3) ... [2023-11-06 23:02:01,186 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36d903c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:02:01, skipping insertion in model container [2023-11-06 23:02:01,186 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:02:00" (2/3) ... [2023-11-06 23:02:01,186 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36d903c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:02:01, skipping insertion in model container [2023-11-06 23:02:01,186 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:02:01" (3/3) ... [2023-11-06 23:02:01,188 INFO L112 eAbstractionObserver]: Analyzing ICFG reorder_2.i [2023-11-06 23:02:01,196 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 23:02:01,207 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 23:02:01,207 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 23:02:01,207 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 23:02:01,333 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-06 23:02:01,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 170 places, 182 transitions, 384 flow [2023-11-06 23:02:01,496 INFO L124 PetriNetUnfolderBase]: 37/367 cut-off events. [2023-11-06 23:02:01,496 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-06 23:02:01,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 384 conditions, 367 events. 37/367 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1278 event pairs, 0 based on Foata normal form. 0/322 useless extension candidates. Maximal degree in co-relation 198. Up to 8 conditions per place. [2023-11-06 23:02:01,504 INFO L82 GeneralOperation]: Start removeDead. Operand has 170 places, 182 transitions, 384 flow [2023-11-06 23:02:01,511 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 170 places, 180 transitions, 374 flow [2023-11-06 23:02:01,514 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 23:02:01,525 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 170 places, 180 transitions, 374 flow [2023-11-06 23:02:01,528 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 170 places, 180 transitions, 374 flow [2023-11-06 23:02:01,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 170 places, 180 transitions, 374 flow [2023-11-06 23:02:01,596 INFO L124 PetriNetUnfolderBase]: 31/341 cut-off events. [2023-11-06 23:02:01,597 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-06 23:02:01,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 354 conditions, 341 events. 31/341 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1119 event pairs, 0 based on Foata normal form. 0/298 useless extension candidates. Maximal degree in co-relation 203. Up to 8 conditions per place. [2023-11-06 23:02:01,603 INFO L119 LiptonReduction]: Number of co-enabled transitions 2270 [2023-11-06 23:02:29,322 WARN L293 SmtUtils]: Spent 5.60s on a formula simplification that was a NOOP. DAG size: 173 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-11-06 23:03:20,968 WARN L293 SmtUtils]: Spent 28.68s on a formula simplification that was a NOOP. DAG size: 217 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-11-06 23:03:48,974 WARN L293 SmtUtils]: Spent 28.00s on a formula simplification that was a NOOP. DAG size: 208 (called from [L 302] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-11-06 23:03:54,633 WARN L293 SmtUtils]: Spent 5.65s on a formula simplification that was a NOOP. DAG size: 223 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-11-06 23:04:00,067 WARN L293 SmtUtils]: Spent 5.43s on a formula simplification that was a NOOP. DAG size: 214 (called from [L 302] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-11-06 23:04:00,091 INFO L134 LiptonReduction]: Checked pairs total: 2757 [2023-11-06 23:04:00,092 INFO L136 LiptonReduction]: Total number of compositions: 200 [2023-11-06 23:04:00,107 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 23:04:00,112 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7ef8a9ef, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 23:04:00,113 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-06 23:04:00,118 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 23:04:00,119 INFO L124 PetriNetUnfolderBase]: 0/11 cut-off events. [2023-11-06 23:04:00,119 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 23:04:00,119 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:04:00,120 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 23:04:00,120 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 23:04:00,125 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:04:00,126 INFO L85 PathProgramCache]: Analyzing trace with hash 645797738, now seen corresponding path program 1 times [2023-11-06 23:04:00,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 23:04:00,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [103768912] [2023-11-06 23:04:00,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:04:00,141 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 23:04:00,142 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e24443-b7a6-4308-bd4f-c2d44dc2b8fa/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 23:04:00,149 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e24443-b7a6-4308-bd4f-c2d44dc2b8fa/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 23:04:00,162 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e24443-b7a6-4308-bd4f-c2d44dc2b8fa/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-06 23:04:00,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:04:00,342 INFO L262 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 23:04:00,353 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:04:01,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:04:01,908 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:04:01,909 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 23:04:01,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [103768912] [2023-11-06 23:04:01,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [103768912] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:04:01,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:04:01,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 23:04:01,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161744293] [2023-11-06 23:04:01,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:04:01,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:04:01,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 23:04:01,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:04:01,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:04:01,983 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 382 [2023-11-06 23:04:01,990 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 23 transitions, 60 flow. Second operand has 3 states, 3 states have (on average 162.66666666666666) internal successors, (488), 3 states have internal predecessors, (488), 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) [2023-11-06 23:04:01,991 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:04:01,992 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 382 [2023-11-06 23:04:01,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:04:02,515 INFO L124 PetriNetUnfolderBase]: 118/268 cut-off events. [2023-11-06 23:04:02,516 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2023-11-06 23:04:02,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 555 conditions, 268 events. 118/268 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1063 event pairs, 29 based on Foata normal form. 0/191 useless extension candidates. Maximal degree in co-relation 379. Up to 201 conditions per place. [2023-11-06 23:04:02,520 INFO L140 encePairwiseOnDemand]: 379/382 looper letters, 31 selfloop transitions, 2 changer transitions 0/35 dead transitions. [2023-11-06 23:04:02,520 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 35 transitions, 153 flow [2023-11-06 23:04:02,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:04:02,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 23:04:02,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 517 transitions. [2023-11-06 23:04:02,541 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4511343804537522 [2023-11-06 23:04:02,557 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 517 transitions. [2023-11-06 23:04:02,557 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 517 transitions. [2023-11-06 23:04:02,563 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:04:02,566 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 517 transitions. [2023-11-06 23:04:02,573 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 172.33333333333334) internal successors, (517), 3 states have internal predecessors, (517), 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) [2023-11-06 23:04:02,581 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 382.0) internal successors, (1528), 4 states have internal predecessors, (1528), 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) [2023-11-06 23:04:02,583 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 382.0) internal successors, (1528), 4 states have internal predecessors, (1528), 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) [2023-11-06 23:04:02,585 INFO L175 Difference]: Start difference. First operand has 26 places, 23 transitions, 60 flow. Second operand 3 states and 517 transitions. [2023-11-06 23:04:02,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 35 transitions, 153 flow [2023-11-06 23:04:02,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 35 transitions, 153 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 23:04:02,593 INFO L231 Difference]: Finished difference. Result has 29 places, 23 transitions, 68 flow [2023-11-06 23:04:02,596 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=382, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=68, PETRI_PLACES=29, PETRI_TRANSITIONS=23} [2023-11-06 23:04:02,600 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 3 predicate places. [2023-11-06 23:04:02,601 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 23 transitions, 68 flow [2023-11-06 23:04:02,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 162.66666666666666) internal successors, (488), 3 states have internal predecessors, (488), 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) [2023-11-06 23:04:02,602 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:04:02,602 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-06 23:04:02,622 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e24443-b7a6-4308-bd4f-c2d44dc2b8fa/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-06 23:04:02,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e24443-b7a6-4308-bd4f-c2d44dc2b8fa/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 23:04:02,817 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 23:04:02,817 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:04:02,818 INFO L85 PathProgramCache]: Analyzing trace with hash -1440004789, now seen corresponding path program 1 times [2023-11-06 23:04:02,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 23:04:02,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1436606239] [2023-11-06 23:04:02,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:04:02,819 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 23:04:02,819 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e24443-b7a6-4308-bd4f-c2d44dc2b8fa/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 23:04:02,820 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e24443-b7a6-4308-bd4f-c2d44dc2b8fa/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 23:04:02,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e24443-b7a6-4308-bd4f-c2d44dc2b8fa/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-06 23:04:03,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:04:03,087 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 23:04:03,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:04:03,300 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2023-11-06 23:04:03,300 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-06 23:04:03,302 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2023-11-06 23:04:03,304 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2023-11-06 23:04:03,305 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-11-06 23:04:03,305 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2023-11-06 23:04:03,326 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e24443-b7a6-4308-bd4f-c2d44dc2b8fa/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-11-06 23:04:03,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e24443-b7a6-4308-bd4f-c2d44dc2b8fa/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 23:04:03,506 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-06 23:04:03,510 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-06 23:04:03,510 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-06 23:04:03,550 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-11-06 23:04:03,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 190 places, 203 transitions, 450 flow [2023-11-06 23:04:03,731 INFO L124 PetriNetUnfolderBase]: 149/1151 cut-off events. [2023-11-06 23:04:03,732 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2023-11-06 23:04:03,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1240 conditions, 1151 events. 149/1151 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 6153 event pairs, 2 based on Foata normal form. 0/1009 useless extension candidates. Maximal degree in co-relation 670. Up to 32 conditions per place. [2023-11-06 23:04:03,743 INFO L82 GeneralOperation]: Start removeDead. Operand has 190 places, 203 transitions, 450 flow [2023-11-06 23:04:03,751 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 190 places, 203 transitions, 450 flow [2023-11-06 23:04:03,751 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 23:04:03,751 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 190 places, 203 transitions, 450 flow [2023-11-06 23:04:03,759 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 190 places, 203 transitions, 450 flow [2023-11-06 23:04:03,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 190 places, 203 transitions, 450 flow [2023-11-06 23:04:03,933 INFO L124 PetriNetUnfolderBase]: 149/1151 cut-off events. [2023-11-06 23:04:03,933 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2023-11-06 23:04:03,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1240 conditions, 1151 events. 149/1151 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 6153 event pairs, 2 based on Foata normal form. 0/1009 useless extension candidates. Maximal degree in co-relation 670. Up to 32 conditions per place. [2023-11-06 23:04:03,962 INFO L119 LiptonReduction]: Number of co-enabled transitions 5760 [2023-11-06 23:04:46,750 WARN L293 SmtUtils]: Spent 5.39s on a formula simplification. DAG size of input: 165 DAG size of output: 160 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition)