./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_92-evilcollapse_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_92-evilcollapse_racing.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6efa0097353392a416215c2535cfc6cdc34364d9b0eb2844e37da9edef467642 --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 17:32:13,369 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 17:32:13,440 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 17:32:13,453 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 17:32:13,454 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 17:32:13,479 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 17:32:13,481 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 17:32:13,482 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 17:32:13,482 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 17:32:13,487 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 17:32:13,487 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 17:32:13,487 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 17:32:13,488 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 17:32:13,489 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 17:32:13,489 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 17:32:13,490 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 17:32:13,490 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 17:32:13,490 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 17:32:13,490 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 17:32:13,490 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 17:32:13,491 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 17:32:13,491 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 17:32:13,491 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 17:32:13,491 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 17:32:13,491 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 17:32:13,492 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 17:32:13,492 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 17:32:13,492 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 17:32:13,493 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 17:32:13,493 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 17:32:13,493 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 17:32:13,494 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 17:32:13,494 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 17:32:13,494 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 17:32:13,494 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 17:32:13,494 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 17:32:13,495 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 17:32:13,495 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 17:32:13,495 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 17:32:13,495 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 17:32:13,495 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 17:32:13,495 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 17:32:13,496 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 17:32:13,496 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6efa0097353392a416215c2535cfc6cdc34364d9b0eb2844e37da9edef467642 [2024-06-27 17:32:13,728 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 17:32:13,749 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 17:32:13,751 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 17:32:13,752 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 17:32:13,752 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 17:32:13,753 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_92-evilcollapse_racing.i [2024-06-27 17:32:14,867 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 17:32:15,078 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 17:32:15,078 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_92-evilcollapse_racing.i [2024-06-27 17:32:15,094 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a51236ef/8d1c8dd2280d4e09a9e58e27a6069efc/FLAGf046e305f [2024-06-27 17:32:15,108 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a51236ef/8d1c8dd2280d4e09a9e58e27a6069efc [2024-06-27 17:32:15,110 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 17:32:15,121 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-06-27 17:32:15,122 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 17:32:15,122 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 17:32:15,127 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 17:32:15,130 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 05:32:15" (1/1) ... [2024-06-27 17:32:15,131 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8083a38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:32:15, skipping insertion in model container [2024-06-27 17:32:15,131 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 05:32:15" (1/1) ... [2024-06-27 17:32:15,182 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 17:32:15,485 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_92-evilcollapse_racing.i[47038,47051] [2024-06-27 17:32:15,504 WARN L1645 CHandler]: Possible shadowing of function new [2024-06-27 17:32:15,505 WARN L1645 CHandler]: Possible shadowing of function new [2024-06-27 17:32:15,505 WARN L1645 CHandler]: Possible shadowing of function new [2024-06-27 17:32:15,507 WARN L1645 CHandler]: Possible shadowing of function new [2024-06-27 17:32:15,544 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 17:32:15,574 INFO L202 MainTranslator]: Completed pre-run [2024-06-27 17:32:15,615 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_92-evilcollapse_racing.i[47038,47051] [2024-06-27 17:32:15,621 WARN L1645 CHandler]: Possible shadowing of function new [2024-06-27 17:32:15,622 WARN L1645 CHandler]: Possible shadowing of function new [2024-06-27 17:32:15,622 WARN L1645 CHandler]: Possible shadowing of function new [2024-06-27 17:32:15,623 WARN L1645 CHandler]: Possible shadowing of function new [2024-06-27 17:32:15,634 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 17:32:15,695 INFO L206 MainTranslator]: Completed translation [2024-06-27 17:32:15,696 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:32:15 WrapperNode [2024-06-27 17:32:15,696 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 17:32:15,697 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 17:32:15,697 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 17:32:15,698 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 17:32:15,703 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:32:15" (1/1) ... [2024-06-27 17:32:15,718 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:32:15" (1/1) ... [2024-06-27 17:32:15,743 INFO L138 Inliner]: procedures = 279, calls = 55, calls flagged for inlining = 11, calls inlined = 12, statements flattened = 236 [2024-06-27 17:32:15,744 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 17:32:15,745 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 17:32:15,745 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 17:32:15,745 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 17:32:15,753 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:32:15" (1/1) ... [2024-06-27 17:32:15,754 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:32:15" (1/1) ... [2024-06-27 17:32:15,757 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:32:15" (1/1) ... [2024-06-27 17:32:15,791 INFO L175 MemorySlicer]: Split 32 memory accesses to 4 slices as follows [2, 23, 5, 2]. 72 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 0, 5, 0]. The 15 writes are split as follows [0, 14, 0, 1]. [2024-06-27 17:32:15,800 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:32:15" (1/1) ... [2024-06-27 17:32:15,801 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:32:15" (1/1) ... [2024-06-27 17:32:15,809 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:32:15" (1/1) ... [2024-06-27 17:32:15,812 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:32:15" (1/1) ... [2024-06-27 17:32:15,814 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:32:15" (1/1) ... [2024-06-27 17:32:15,820 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:32:15" (1/1) ... [2024-06-27 17:32:15,825 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 17:32:15,826 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 17:32:15,826 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 17:32:15,826 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 17:32:15,827 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:32:15" (1/1) ... [2024-06-27 17:32:15,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 17:32:15,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 17:32:15,851 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-27 17:32:15,862 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-27 17:32:15,887 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-06-27 17:32:15,887 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-06-27 17:32:15,887 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-06-27 17:32:15,888 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-06-27 17:32:15,888 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-06-27 17:32:15,888 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-06-27 17:32:15,888 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-06-27 17:32:15,888 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-06-27 17:32:15,888 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-06-27 17:32:15,888 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-06-27 17:32:15,888 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-06-27 17:32:15,888 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-06-27 17:32:15,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-06-27 17:32:15,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-06-27 17:32:15,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-06-27 17:32:15,889 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-06-27 17:32:15,890 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-06-27 17:32:15,890 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 17:32:15,890 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-06-27 17:32:15,890 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-06-27 17:32:15,892 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-06-27 17:32:15,892 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-06-27 17:32:15,892 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-06-27 17:32:15,892 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-06-27 17:32:15,892 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 17:32:15,893 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-27 17:32:15,893 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-06-27 17:32:15,893 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-06-27 17:32:15,893 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 17:32:15,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 17:32:15,895 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-27 17:32:16,017 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 17:32:16,018 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 17:32:16,305 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 17:32:16,305 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 17:32:16,552 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 17:32:16,552 INFO L320 CfgBuilder]: Removed 16 assume(true) statements. [2024-06-27 17:32:16,553 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 05:32:16 BoogieIcfgContainer [2024-06-27 17:32:16,553 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 17:32:16,554 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 17:32:16,554 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 17:32:16,557 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 17:32:16,557 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 05:32:15" (1/3) ... [2024-06-27 17:32:16,558 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ccdbe74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 05:32:16, skipping insertion in model container [2024-06-27 17:32:16,558 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:32:15" (2/3) ... [2024-06-27 17:32:16,559 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ccdbe74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 05:32:16, skipping insertion in model container [2024-06-27 17:32:16,559 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 05:32:16" (3/3) ... [2024-06-27 17:32:16,561 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_92-evilcollapse_racing.i [2024-06-27 17:32:16,568 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2024-06-27 17:32:16,576 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 17:32:16,576 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-06-27 17:32:16,576 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 17:32:16,616 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-06-27 17:32:16,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 46 places, 60 transitions, 127 flow [2024-06-27 17:32:16,672 INFO L124 PetriNetUnfolderBase]: 17/64 cut-off events. [2024-06-27 17:32:16,672 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-06-27 17:32:16,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 64 events. 17/64 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 118 event pairs, 0 based on Foata normal form. 0/43 useless extension candidates. Maximal degree in co-relation 51. Up to 4 conditions per place. [2024-06-27 17:32:16,675 INFO L82 GeneralOperation]: Start removeDead. Operand has 46 places, 60 transitions, 127 flow [2024-06-27 17:32:16,679 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 45 places, 58 transitions, 120 flow [2024-06-27 17:32:16,692 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 17:32:16,699 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@46c62b6c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 17:32:16,699 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-06-27 17:32:16,707 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 17:32:16,708 INFO L124 PetriNetUnfolderBase]: 2/16 cut-off events. [2024-06-27 17:32:16,708 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 17:32:16,708 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:32:16,709 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2024-06-27 17:32:16,709 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-06-27 17:32:16,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:32:16,713 INFO L85 PathProgramCache]: Analyzing trace with hash -2139306466, now seen corresponding path program 1 times [2024-06-27 17:32:16,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:32:16,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111174108] [2024-06-27 17:32:16,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:32:16,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:32:16,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:32:17,033 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-06-27 17:32:17,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:32:17,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111174108] [2024-06-27 17:32:17,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111174108] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:32:17,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:32:17,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 17:32:17,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120824309] [2024-06-27 17:32:17,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:32:17,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 17:32:17,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:32:17,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 17:32:17,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 17:32:17,076 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 60 [2024-06-27 17:32:17,078 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 58 transitions, 120 flow. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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) [2024-06-27 17:32:17,078 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:32:17,078 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 60 [2024-06-27 17:32:17,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:32:17,279 INFO L124 PetriNetUnfolderBase]: 116/324 cut-off events. [2024-06-27 17:32:17,279 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 17:32:17,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 568 conditions, 324 events. 116/324 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1290 event pairs, 95 based on Foata normal form. 42/309 useless extension candidates. Maximal degree in co-relation 536. Up to 237 conditions per place. [2024-06-27 17:32:17,284 INFO L140 encePairwiseOnDemand]: 46/60 looper letters, 33 selfloop transitions, 2 changer transitions 0/50 dead transitions. [2024-06-27 17:32:17,284 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 50 transitions, 174 flow [2024-06-27 17:32:17,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 17:32:17,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 17:32:17,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 92 transitions. [2024-06-27 17:32:17,296 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5111111111111111 [2024-06-27 17:32:17,298 INFO L175 Difference]: Start difference. First operand has 45 places, 58 transitions, 120 flow. Second operand 3 states and 92 transitions. [2024-06-27 17:32:17,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 50 transitions, 174 flow [2024-06-27 17:32:17,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 50 transitions, 174 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-06-27 17:32:17,305 INFO L231 Difference]: Finished difference. Result has 48 places, 48 transitions, 110 flow [2024-06-27 17:32:17,307 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=110, PETRI_PLACES=48, PETRI_TRANSITIONS=48} [2024-06-27 17:32:17,310 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 3 predicate places. [2024-06-27 17:32:17,310 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 48 transitions, 110 flow [2024-06-27 17:32:17,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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) [2024-06-27 17:32:17,311 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:32:17,311 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:32:17,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 17:32:17,311 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-06-27 17:32:17,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:32:17,312 INFO L85 PathProgramCache]: Analyzing trace with hash 1234325707, now seen corresponding path program 1 times [2024-06-27 17:32:17,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:32:17,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028720007] [2024-06-27 17:32:17,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:32:17,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:32:17,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:32:17,413 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-06-27 17:32:17,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:32:17,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028720007] [2024-06-27 17:32:17,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028720007] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:32:17,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:32:17,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 17:32:17,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997128952] [2024-06-27 17:32:17,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:32:17,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 17:32:17,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:32:17,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 17:32:17,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 17:32:17,418 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 60 [2024-06-27 17:32:17,418 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 48 transitions, 110 flow. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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) [2024-06-27 17:32:17,419 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:32:17,419 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 60 [2024-06-27 17:32:17,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:32:17,582 INFO L124 PetriNetUnfolderBase]: 116/326 cut-off events. [2024-06-27 17:32:17,583 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 17:32:17,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 579 conditions, 326 events. 116/326 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1293 event pairs, 95 based on Foata normal form. 2/274 useless extension candidates. Maximal degree in co-relation 561. Up to 240 conditions per place. [2024-06-27 17:32:17,590 INFO L140 encePairwiseOnDemand]: 57/60 looper letters, 32 selfloop transitions, 2 changer transitions 0/49 dead transitions. [2024-06-27 17:32:17,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 49 transitions, 180 flow [2024-06-27 17:32:17,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 17:32:17,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 17:32:17,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 79 transitions. [2024-06-27 17:32:17,593 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4388888888888889 [2024-06-27 17:32:17,593 INFO L175 Difference]: Start difference. First operand has 48 places, 48 transitions, 110 flow. Second operand 3 states and 79 transitions. [2024-06-27 17:32:17,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 49 transitions, 180 flow [2024-06-27 17:32:17,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 49 transitions, 178 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 17:32:17,599 INFO L231 Difference]: Finished difference. Result has 50 places, 49 transitions, 122 flow [2024-06-27 17:32:17,600 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=50, PETRI_TRANSITIONS=49} [2024-06-27 17:32:17,600 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 5 predicate places. [2024-06-27 17:32:17,600 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 49 transitions, 122 flow [2024-06-27 17:32:17,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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) [2024-06-27 17:32:17,601 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:32:17,601 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:32:17,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 17:32:17,601 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-06-27 17:32:17,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:32:17,602 INFO L85 PathProgramCache]: Analyzing trace with hash -1965924893, now seen corresponding path program 1 times [2024-06-27 17:32:17,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:32:17,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375190315] [2024-06-27 17:32:17,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:32:17,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:32:17,640 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2024-06-27 17:32:17,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [343989655] [2024-06-27 17:32:17,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:32:17,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 17:32:17,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 17:32:17,642 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-27 17:32:17,668 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-06-27 17:32:17,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:32:17,789 INFO L262 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 3 conjunts are in the unsatisfiable core [2024-06-27 17:32:17,793 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 17:32:17,821 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-06-27 17:32:17,822 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 17:32:17,837 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-06-27 17:32:17,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:32:17,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375190315] [2024-06-27 17:32:17,838 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-06-27 17:32:17,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [343989655] [2024-06-27 17:32:17,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [343989655] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 17:32:17,838 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-06-27 17:32:17,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2024-06-27 17:32:17,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56937911] [2024-06-27 17:32:17,839 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-06-27 17:32:17,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 17:32:17,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:32:17,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 17:32:17,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-27 17:32:17,840 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 60 [2024-06-27 17:32:17,841 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 49 transitions, 122 flow. Second operand has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 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) [2024-06-27 17:32:17,841 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:32:17,841 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 60 [2024-06-27 17:32:17,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:32:18,096 INFO L124 PetriNetUnfolderBase]: 116/332 cut-off events. [2024-06-27 17:32:18,097 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-06-27 17:32:18,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 607 conditions, 332 events. 116/332 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1308 event pairs, 95 based on Foata normal form. 6/284 useless extension candidates. Maximal degree in co-relation 568. Up to 240 conditions per place. [2024-06-27 17:32:18,098 INFO L140 encePairwiseOnDemand]: 57/60 looper letters, 32 selfloop transitions, 5 changer transitions 0/52 dead transitions. [2024-06-27 17:32:18,098 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 52 transitions, 208 flow [2024-06-27 17:32:18,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 17:32:18,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 17:32:18,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 129 transitions. [2024-06-27 17:32:18,100 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35833333333333334 [2024-06-27 17:32:18,100 INFO L175 Difference]: Start difference. First operand has 50 places, 49 transitions, 122 flow. Second operand 6 states and 129 transitions. [2024-06-27 17:32:18,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 52 transitions, 208 flow [2024-06-27 17:32:18,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 52 transitions, 204 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-06-27 17:32:18,103 INFO L231 Difference]: Finished difference. Result has 57 places, 52 transitions, 160 flow [2024-06-27 17:32:18,103 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=160, PETRI_PLACES=57, PETRI_TRANSITIONS=52} [2024-06-27 17:32:18,104 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 12 predicate places. [2024-06-27 17:32:18,104 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 52 transitions, 160 flow [2024-06-27 17:32:18,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 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) [2024-06-27 17:32:18,104 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:32:18,104 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:32:18,128 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-06-27 17:32:18,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 17:32:18,305 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-06-27 17:32:18,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:32:18,306 INFO L85 PathProgramCache]: Analyzing trace with hash -1615276341, now seen corresponding path program 2 times [2024-06-27 17:32:18,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:32:18,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596743577] [2024-06-27 17:32:18,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:32:18,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:32:18,396 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2024-06-27 17:32:18,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1751152960] [2024-06-27 17:32:18,397 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-06-27 17:32:18,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 17:32:18,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 17:32:18,398 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-27 17:32:18,399 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-06-27 17:32:18,632 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-06-27 17:32:18,632 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-27 17:32:18,636 INFO L262 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 6 conjunts are in the unsatisfiable core [2024-06-27 17:32:18,638 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 17:32:18,662 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-06-27 17:32:18,662 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 17:32:18,705 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-06-27 17:32:18,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:32:18,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596743577] [2024-06-27 17:32:18,705 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-06-27 17:32:18,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1751152960] [2024-06-27 17:32:18,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1751152960] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 17:32:18,706 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-06-27 17:32:18,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2024-06-27 17:32:18,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944795170] [2024-06-27 17:32:18,706 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-06-27 17:32:18,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 17:32:18,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:32:18,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 17:32:18,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2024-06-27 17:32:18,708 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 60 [2024-06-27 17:32:18,708 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 52 transitions, 160 flow. Second operand has 12 states, 12 states have (on average 16.416666666666668) internal successors, (197), 12 states have internal predecessors, (197), 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) [2024-06-27 17:32:18,709 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:32:18,709 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 60 [2024-06-27 17:32:18,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:32:19,350 INFO L124 PetriNetUnfolderBase]: 116/344 cut-off events. [2024-06-27 17:32:19,351 INFO L125 PetriNetUnfolderBase]: For 81/81 co-relation queries the response was YES. [2024-06-27 17:32:19,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 678 conditions, 344 events. 116/344 cut-off events. For 81/81 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1362 event pairs, 95 based on Foata normal form. 12/302 useless extension candidates. Maximal degree in co-relation 564. Up to 240 conditions per place. [2024-06-27 17:32:19,352 INFO L140 encePairwiseOnDemand]: 57/60 looper letters, 32 selfloop transitions, 11 changer transitions 0/58 dead transitions. [2024-06-27 17:32:19,353 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 58 transitions, 282 flow [2024-06-27 17:32:19,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 17:32:19,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 17:32:19,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 228 transitions. [2024-06-27 17:32:19,355 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31666666666666665 [2024-06-27 17:32:19,355 INFO L175 Difference]: Start difference. First operand has 57 places, 52 transitions, 160 flow. Second operand 12 states and 228 transitions. [2024-06-27 17:32:19,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 58 transitions, 282 flow [2024-06-27 17:32:19,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 58 transitions, 268 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-06-27 17:32:19,357 INFO L231 Difference]: Finished difference. Result has 73 places, 58 transitions, 242 flow [2024-06-27 17:32:19,357 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=242, PETRI_PLACES=73, PETRI_TRANSITIONS=58} [2024-06-27 17:32:19,358 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 28 predicate places. [2024-06-27 17:32:19,358 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 58 transitions, 242 flow [2024-06-27 17:32:19,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 16.416666666666668) internal successors, (197), 12 states have internal predecessors, (197), 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) [2024-06-27 17:32:19,359 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:32:19,359 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:32:19,373 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-06-27 17:32:19,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-06-27 17:32:19,570 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-06-27 17:32:19,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:32:19,570 INFO L85 PathProgramCache]: Analyzing trace with hash -52756533, now seen corresponding path program 3 times [2024-06-27 17:32:19,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:32:19,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089210348] [2024-06-27 17:32:19,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:32:19,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:32:19,672 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2024-06-27 17:32:19,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [387870237] [2024-06-27 17:32:19,673 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-06-27 17:32:19,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 17:32:19,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 17:32:19,674 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-27 17:32:19,676 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-06-27 17:32:19,960 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-06-27 17:32:19,960 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-27 17:32:19,962 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 3 conjunts are in the unsatisfiable core [2024-06-27 17:32:19,963 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 17:32:19,986 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2024-06-27 17:32:19,986 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 17:32:20,020 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2024-06-27 17:32:20,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:32:20,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089210348] [2024-06-27 17:32:20,023 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-06-27 17:32:20,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [387870237] [2024-06-27 17:32:20,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [387870237] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 17:32:20,024 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-06-27 17:32:20,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2024-06-27 17:32:20,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049342628] [2024-06-27 17:32:20,024 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-06-27 17:32:20,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 17:32:20,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:32:20,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 17:32:20,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-27 17:32:20,025 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 60 [2024-06-27 17:32:20,026 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 58 transitions, 242 flow. Second operand has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 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) [2024-06-27 17:32:20,026 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:32:20,026 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 60 [2024-06-27 17:32:20,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:32:20,271 INFO L124 PetriNetUnfolderBase]: 118/371 cut-off events. [2024-06-27 17:32:20,271 INFO L125 PetriNetUnfolderBase]: For 163/163 co-relation queries the response was YES. [2024-06-27 17:32:20,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 871 conditions, 371 events. 118/371 cut-off events. For 163/163 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1293 event pairs, 95 based on Foata normal form. 3/320 useless extension candidates. Maximal degree in co-relation 565. Up to 234 conditions per place. [2024-06-27 17:32:20,273 INFO L140 encePairwiseOnDemand]: 56/60 looper letters, 76 selfloop transitions, 6 changer transitions 0/97 dead transitions. [2024-06-27 17:32:20,273 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 97 transitions, 755 flow [2024-06-27 17:32:20,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 17:32:20,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 17:32:20,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 135 transitions. [2024-06-27 17:32:20,275 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-27 17:32:20,275 INFO L175 Difference]: Start difference. First operand has 73 places, 58 transitions, 242 flow. Second operand 6 states and 135 transitions. [2024-06-27 17:32:20,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 97 transitions, 755 flow [2024-06-27 17:32:20,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 97 transitions, 561 flow, removed 76 selfloop flow, removed 5 redundant places. [2024-06-27 17:32:20,279 INFO L231 Difference]: Finished difference. Result has 77 places, 61 transitions, 277 flow [2024-06-27 17:32:20,280 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=277, PETRI_PLACES=77, PETRI_TRANSITIONS=61} [2024-06-27 17:32:20,280 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 32 predicate places. [2024-06-27 17:32:20,280 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 61 transitions, 277 flow [2024-06-27 17:32:20,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 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) [2024-06-27 17:32:20,281 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:32:20,281 INFO L208 CegarLoopForPetriNet]: trace histogram [40, 4, 4, 2, 1, 1, 1, 1, 1] [2024-06-27 17:32:20,295 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-06-27 17:32:20,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 17:32:20,495 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-06-27 17:32:20,496 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:32:20,496 INFO L85 PathProgramCache]: Analyzing trace with hash -616691758, now seen corresponding path program 4 times [2024-06-27 17:32:20,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:32:20,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590522158] [2024-06-27 17:32:20,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:32:20,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:32:20,902 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2024-06-27 17:32:20,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [86435049] [2024-06-27 17:32:20,902 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-06-27 17:32:20,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 17:32:20,903 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 17:32:20,903 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-27 17:32:20,905 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-06-27 17:32:22,116 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-06-27 17:32:22,116 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-27 17:32:22,141 INFO L262 TraceCheckSpWp]: Trace formula consists of 3739 conjuncts, 12 conjunts are in the unsatisfiable core [2024-06-27 17:32:22,147 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 17:32:22,226 INFO L134 CoverageAnalysis]: Checked inductivity of 958 backedges. 367 proven. 55 refuted. 0 times theorem prover too weak. 536 trivial. 0 not checked. [2024-06-27 17:32:22,226 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 17:32:22,393 INFO L134 CoverageAnalysis]: Checked inductivity of 958 backedges. 367 proven. 55 refuted. 0 times theorem prover too weak. 536 trivial. 0 not checked. [2024-06-27 17:32:22,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:32:22,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590522158] [2024-06-27 17:32:22,394 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-06-27 17:32:22,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [86435049] [2024-06-27 17:32:22,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [86435049] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 17:32:22,394 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-06-27 17:32:22,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2024-06-27 17:32:22,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461850837] [2024-06-27 17:32:22,394 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-06-27 17:32:22,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-06-27 17:32:22,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:32:22,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-06-27 17:32:22,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2024-06-27 17:32:22,396 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 60 [2024-06-27 17:32:22,397 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 61 transitions, 277 flow. Second operand has 24 states, 24 states have (on average 16.333333333333332) internal successors, (392), 24 states have internal predecessors, (392), 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) [2024-06-27 17:32:22,397 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:32:22,397 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 60 [2024-06-27 17:32:22,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:32:23,455 INFO L124 PetriNetUnfolderBase]: 118/419 cut-off events. [2024-06-27 17:32:23,455 INFO L125 PetriNetUnfolderBase]: For 3489/3489 co-relation queries the response was YES. [2024-06-27 17:32:23,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 987 conditions, 419 events. 118/419 cut-off events. For 3489/3489 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1293 event pairs, 95 based on Foata normal form. 48/413 useless extension candidates. Maximal degree in co-relation 570. Up to 246 conditions per place. [2024-06-27 17:32:23,457 INFO L140 encePairwiseOnDemand]: 57/60 looper letters, 34 selfloop transitions, 24 changer transitions 0/73 dead transitions. [2024-06-27 17:32:23,457 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 73 transitions, 465 flow [2024-06-27 17:32:23,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-06-27 17:32:23,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-06-27 17:32:23,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 426 transitions. [2024-06-27 17:32:23,459 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.29583333333333334 [2024-06-27 17:32:23,459 INFO L175 Difference]: Start difference. First operand has 77 places, 61 transitions, 277 flow. Second operand 24 states and 426 transitions. [2024-06-27 17:32:23,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 73 transitions, 465 flow [2024-06-27 17:32:23,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 73 transitions, 457 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-06-27 17:32:23,462 INFO L231 Difference]: Finished difference. Result has 111 places, 73 transitions, 511 flow [2024-06-27 17:32:23,462 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=511, PETRI_PLACES=111, PETRI_TRANSITIONS=73} [2024-06-27 17:32:23,463 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 66 predicate places. [2024-06-27 17:32:23,463 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 73 transitions, 511 flow [2024-06-27 17:32:23,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 16.333333333333332) internal successors, (392), 24 states have internal predecessors, (392), 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) [2024-06-27 17:32:23,463 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:32:23,463 INFO L208 CegarLoopForPetriNet]: trace histogram [88, 4, 4, 2, 1, 1, 1, 1, 1] [2024-06-27 17:32:23,506 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-06-27 17:32:23,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 17:32:23,677 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-06-27 17:32:23,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:32:23,677 INFO L85 PathProgramCache]: Analyzing trace with hash -30659886, now seen corresponding path program 5 times [2024-06-27 17:32:23,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:32:23,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775042731] [2024-06-27 17:32:23,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:32:23,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:32:24,366 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2024-06-27 17:32:24,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [301833176] [2024-06-27 17:32:24,367 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-06-27 17:32:24,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 17:32:24,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 17:32:24,368 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-27 17:32:24,407 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process Killed by 15