./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/rfi001_power.oepc_pso.oepc_rmo.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a340643f 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/pthread-wmm/rfi001_power.oepc_pso.oepc_rmo.oepc.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 67d0d28278c33bd8f728db1165a077a9d9ba1963e0d97b66e361587c8715de93 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-a340643-m [2024-01-27 16:14:53,787 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-27 16:14:53,850 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-27 16:14:53,857 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-27 16:14:53,857 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-27 16:14:53,881 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-27 16:14:53,881 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-27 16:14:53,882 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-27 16:14:53,882 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-27 16:14:53,885 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-27 16:14:53,885 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-27 16:14:53,886 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-27 16:14:53,886 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-27 16:14:53,887 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-27 16:14:53,887 INFO L153 SettingsManager]: * Use SBE=true [2024-01-27 16:14:53,888 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-27 16:14:53,888 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-27 16:14:53,888 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-27 16:14:53,888 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-27 16:14:53,889 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-27 16:14:53,889 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-27 16:14:53,889 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-27 16:14:53,889 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-27 16:14:53,889 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-27 16:14:53,890 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-27 16:14:53,890 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-27 16:14:53,890 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-27 16:14:53,890 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-27 16:14:53,891 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-27 16:14:53,891 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-27 16:14:53,892 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-27 16:14:53,892 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-27 16:14:53,892 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 16:14:53,892 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-27 16:14:53,892 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-27 16:14:53,893 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-27 16:14:53,893 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-27 16:14:53,893 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-27 16:14:53,893 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-27 16:14:53,893 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-27 16:14:53,894 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-27 16:14:53,894 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-27 16:14:53,894 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-27 16:14:53,894 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 67d0d28278c33bd8f728db1165a077a9d9ba1963e0d97b66e361587c8715de93 [2024-01-27 16:14:54,101 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-27 16:14:54,125 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-27 16:14:54,127 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-27 16:14:54,127 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-27 16:14:54,128 INFO L274 PluginConnector]: CDTParser initialized [2024-01-27 16:14:54,129 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/rfi001_power.oepc_pso.oepc_rmo.oepc.i [2024-01-27 16:14:55,245 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-27 16:14:55,430 INFO L384 CDTParser]: Found 1 translation units. [2024-01-27 16:14:55,430 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi001_power.oepc_pso.oepc_rmo.oepc.i [2024-01-27 16:14:55,442 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f243099f/1124c69116b846a499f091402694d7aa/FLAG0d924dfe9 [2024-01-27 16:14:55,453 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f243099f/1124c69116b846a499f091402694d7aa [2024-01-27 16:14:55,455 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-27 16:14:55,456 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-01-27 16:14:55,457 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-27 16:14:55,457 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-27 16:14:55,464 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-27 16:14:55,465 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 04:14:55" (1/1) ... [2024-01-27 16:14:55,465 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12b235f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:14:55, skipping insertion in model container [2024-01-27 16:14:55,466 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 04:14:55" (1/1) ... [2024-01-27 16:14:55,509 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-01-27 16:14:55,645 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi001_power.oepc_pso.oepc_rmo.oepc.i[969,982] [2024-01-27 16:14:55,826 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 16:14:55,841 INFO L202 MainTranslator]: Completed pre-run [2024-01-27 16:14:55,850 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi001_power.oepc_pso.oepc_rmo.oepc.i[969,982] [2024-01-27 16:14:55,905 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 16:14:55,945 INFO L206 MainTranslator]: Completed translation [2024-01-27 16:14:55,945 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:14:55 WrapperNode [2024-01-27 16:14:55,945 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-27 16:14:55,947 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-27 16:14:55,947 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-27 16:14:55,947 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-27 16:14:55,952 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:14:55" (1/1) ... [2024-01-27 16:14:55,979 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:14:55" (1/1) ... [2024-01-27 16:14:55,999 INFO L138 Inliner]: procedures = 175, calls = 45, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 113 [2024-01-27 16:14:56,000 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-27 16:14:56,001 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-27 16:14:56,001 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-27 16:14:56,001 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-27 16:14:56,010 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:14:55" (1/1) ... [2024-01-27 16:14:56,014 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:14:55" (1/1) ... [2024-01-27 16:14:56,016 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:14:55" (1/1) ... [2024-01-27 16:14:56,030 INFO L175 MemorySlicer]: Split 4 memory accesses to 3 slices as follows [2, 1, 1]. 50 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1]. [2024-01-27 16:14:56,031 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:14:55" (1/1) ... [2024-01-27 16:14:56,031 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:14:55" (1/1) ... [2024-01-27 16:14:56,037 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:14:55" (1/1) ... [2024-01-27 16:14:56,039 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:14:55" (1/1) ... [2024-01-27 16:14:56,041 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:14:55" (1/1) ... [2024-01-27 16:14:56,042 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:14:55" (1/1) ... [2024-01-27 16:14:56,044 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-27 16:14:56,045 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-27 16:14:56,045 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-27 16:14:56,045 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-27 16:14:56,046 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:14:55" (1/1) ... [2024-01-27 16:14:56,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 16:14:56,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 16:14:56,122 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) [2024-01-27 16:14:56,154 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 [2024-01-27 16:14:56,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-27 16:14:56,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-27 16:14:56,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-27 16:14:56,188 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-01-27 16:14:56,188 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-27 16:14:56,188 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-27 16:14:56,189 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-27 16:14:56,190 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-01-27 16:14:56,190 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-01-27 16:14:56,190 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-01-27 16:14:56,190 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-01-27 16:14:56,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-27 16:14:56,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-27 16:14:56,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-27 16:14:56,191 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-01-27 16:14:56,191 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-27 16:14:56,191 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-27 16:14:56,193 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-27 16:14:56,328 INFO L244 CfgBuilder]: Building ICFG [2024-01-27 16:14:56,330 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-27 16:14:56,565 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-27 16:14:56,565 INFO L293 CfgBuilder]: Performing block encoding [2024-01-27 16:14:56,680 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-27 16:14:56,680 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-01-27 16:14:56,681 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 04:14:56 BoogieIcfgContainer [2024-01-27 16:14:56,681 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-27 16:14:56,682 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-27 16:14:56,682 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-27 16:14:56,685 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-27 16:14:56,685 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 04:14:55" (1/3) ... [2024-01-27 16:14:56,686 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@708f2d98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 04:14:56, skipping insertion in model container [2024-01-27 16:14:56,686 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:14:55" (2/3) ... [2024-01-27 16:14:56,686 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@708f2d98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 04:14:56, skipping insertion in model container [2024-01-27 16:14:56,686 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 04:14:56" (3/3) ... [2024-01-27 16:14:56,687 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi001_power.oepc_pso.oepc_rmo.oepc.i [2024-01-27 16:14:56,694 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2024-01-27 16:14:56,702 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-27 16:14:56,702 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-01-27 16:14:56,702 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-27 16:14:56,729 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-01-27 16:14:56,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 38 places, 32 transitions, 72 flow [2024-01-27 16:14:56,801 INFO L124 PetriNetUnfolderBase]: 1/30 cut-off events. [2024-01-27 16:14:56,805 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-27 16:14:56,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 30 events. 1/30 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 44 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 30. Up to 2 conditions per place. [2024-01-27 16:14:56,808 INFO L82 GeneralOperation]: Start removeDead. Operand has 38 places, 32 transitions, 72 flow [2024-01-27 16:14:56,811 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 36 places, 30 transitions, 66 flow [2024-01-27 16:14:56,818 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-27 16:14:56,822 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;@28ab2ff5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-27 16:14:56,823 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-01-27 16:14:56,825 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-27 16:14:56,825 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-01-27 16:14:56,825 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-27 16:14:56,826 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:14:56,826 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-01-27 16:14:56,826 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-27 16:14:56,830 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:14:56,830 INFO L85 PathProgramCache]: Analyzing trace with hash 9959603, now seen corresponding path program 1 times [2024-01-27 16:14:56,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:14:56,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192241895] [2024-01-27 16:14:56,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:14:56,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:14:56,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:14:57,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 16:14:57,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:14:57,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192241895] [2024-01-27 16:14:57,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192241895] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:14:57,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:14:57,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-27 16:14:57,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080374875] [2024-01-27 16:14:57,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:14:57,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 16:14:57,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:14:57,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 16:14:57,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 16:14:57,168 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 32 [2024-01-27 16:14:57,170 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 30 transitions, 66 flow. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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) [2024-01-27 16:14:57,170 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:14:57,170 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 32 [2024-01-27 16:14:57,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:14:57,258 INFO L124 PetriNetUnfolderBase]: 135/297 cut-off events. [2024-01-27 16:14:57,258 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-01-27 16:14:57,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 551 conditions, 297 events. 135/297 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1408 event pairs, 51 based on Foata normal form. 15/304 useless extension candidates. Maximal degree in co-relation 541. Up to 199 conditions per place. [2024-01-27 16:14:57,262 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 21 selfloop transitions, 2 changer transitions 2/38 dead transitions. [2024-01-27 16:14:57,262 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 38 transitions, 135 flow [2024-01-27 16:14:57,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 16:14:57,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 16:14:57,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 73 transitions. [2024-01-27 16:14:57,271 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7604166666666666 [2024-01-27 16:14:57,273 INFO L175 Difference]: Start difference. First operand has 36 places, 30 transitions, 66 flow. Second operand 3 states and 73 transitions. [2024-01-27 16:14:57,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 38 transitions, 135 flow [2024-01-27 16:14:57,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 38 transitions, 132 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-27 16:14:57,277 INFO L231 Difference]: Finished difference. Result has 35 places, 27 transitions, 62 flow [2024-01-27 16:14:57,278 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=62, PETRI_PLACES=35, PETRI_TRANSITIONS=27} [2024-01-27 16:14:57,283 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -1 predicate places. [2024-01-27 16:14:57,283 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 27 transitions, 62 flow [2024-01-27 16:14:57,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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) [2024-01-27 16:14:57,284 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:14:57,284 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 16:14:57,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-27 16:14:57,285 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-27 16:14:57,286 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:14:57,286 INFO L85 PathProgramCache]: Analyzing trace with hash 1550923592, now seen corresponding path program 1 times [2024-01-27 16:14:57,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:14:57,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553346122] [2024-01-27 16:14:57,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:14:57,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:14:57,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:14:57,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 16:14:57,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:14:57,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553346122] [2024-01-27 16:14:57,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553346122] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:14:57,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:14:57,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-27 16:14:57,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908242742] [2024-01-27 16:14:57,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:14:57,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 16:14:57,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:14:57,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 16:14:57,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-27 16:14:57,485 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-01-27 16:14:57,486 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 27 transitions, 62 flow. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 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) [2024-01-27 16:14:57,486 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:14:57,486 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-01-27 16:14:57,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:14:57,742 INFO L124 PetriNetUnfolderBase]: 284/560 cut-off events. [2024-01-27 16:14:57,742 INFO L125 PetriNetUnfolderBase]: For 53/53 co-relation queries the response was YES. [2024-01-27 16:14:57,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1124 conditions, 560 events. 284/560 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2948 event pairs, 51 based on Foata normal form. 0/537 useless extension candidates. Maximal degree in co-relation 1114. Up to 281 conditions per place. [2024-01-27 16:14:57,745 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 21 selfloop transitions, 2 changer transitions 32/64 dead transitions. [2024-01-27 16:14:57,745 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 64 transitions, 258 flow [2024-01-27 16:14:57,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-27 16:14:57,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-27 16:14:57,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 145 transitions. [2024-01-27 16:14:57,747 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.56640625 [2024-01-27 16:14:57,748 INFO L175 Difference]: Start difference. First operand has 35 places, 27 transitions, 62 flow. Second operand 8 states and 145 transitions. [2024-01-27 16:14:57,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 64 transitions, 258 flow [2024-01-27 16:14:57,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 64 transitions, 242 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-27 16:14:57,749 INFO L231 Difference]: Finished difference. Result has 44 places, 26 transitions, 72 flow [2024-01-27 16:14:57,749 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=72, PETRI_PLACES=44, PETRI_TRANSITIONS=26} [2024-01-27 16:14:57,750 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 8 predicate places. [2024-01-27 16:14:57,750 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 26 transitions, 72 flow [2024-01-27 16:14:57,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 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) [2024-01-27 16:14:57,751 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:14:57,751 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 16:14:57,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-27 16:14:57,751 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-27 16:14:57,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:14:57,752 INFO L85 PathProgramCache]: Analyzing trace with hash 519754122, now seen corresponding path program 1 times [2024-01-27 16:14:57,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:14:57,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497623400] [2024-01-27 16:14:57,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:14:57,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:14:57,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:14:57,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 16:14:57,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:14:57,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497623400] [2024-01-27 16:14:57,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497623400] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:14:57,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:14:57,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-27 16:14:57,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334533048] [2024-01-27 16:14:57,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:14:57,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 16:14:57,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:14:57,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 16:14:57,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-27 16:14:57,859 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 32 [2024-01-27 16:14:57,859 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 26 transitions, 72 flow. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 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) [2024-01-27 16:14:57,859 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:14:57,860 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 32 [2024-01-27 16:14:57,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:14:57,935 INFO L124 PetriNetUnfolderBase]: 176/388 cut-off events. [2024-01-27 16:14:57,936 INFO L125 PetriNetUnfolderBase]: For 64/64 co-relation queries the response was YES. [2024-01-27 16:14:57,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 821 conditions, 388 events. 176/388 cut-off events. For 64/64 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1826 event pairs, 38 based on Foata normal form. 25/401 useless extension candidates. Maximal degree in co-relation 806. Up to 153 conditions per place. [2024-01-27 16:14:57,938 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 30 selfloop transitions, 4 changer transitions 1/44 dead transitions. [2024-01-27 16:14:57,938 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 44 transitions, 180 flow [2024-01-27 16:14:57,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-27 16:14:57,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-27 16:14:57,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 85 transitions. [2024-01-27 16:14:57,940 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6640625 [2024-01-27 16:14:57,940 INFO L175 Difference]: Start difference. First operand has 44 places, 26 transitions, 72 flow. Second operand 4 states and 85 transitions. [2024-01-27 16:14:57,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 44 transitions, 180 flow [2024-01-27 16:14:57,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 44 transitions, 168 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-01-27 16:14:57,942 INFO L231 Difference]: Finished difference. Result has 37 places, 28 transitions, 86 flow [2024-01-27 16:14:57,943 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=86, PETRI_PLACES=37, PETRI_TRANSITIONS=28} [2024-01-27 16:14:57,943 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 1 predicate places. [2024-01-27 16:14:57,943 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 28 transitions, 86 flow [2024-01-27 16:14:57,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 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) [2024-01-27 16:14:57,944 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:14:57,944 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 16:14:57,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-27 16:14:57,944 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-27 16:14:57,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:14:57,945 INFO L85 PathProgramCache]: Analyzing trace with hash 434674746, now seen corresponding path program 1 times [2024-01-27 16:14:57,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:14:57,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384309176] [2024-01-27 16:14:57,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:14:57,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:14:57,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:14:58,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 16:14:58,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:14:58,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384309176] [2024-01-27 16:14:58,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384309176] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:14:58,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:14:58,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-27 16:14:58,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883061017] [2024-01-27 16:14:58,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:14:58,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 16:14:58,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:14:58,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 16:14:58,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-01-27 16:14:58,136 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 32 [2024-01-27 16:14:58,137 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 28 transitions, 86 flow. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 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) [2024-01-27 16:14:58,137 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:14:58,138 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 32 [2024-01-27 16:14:58,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:14:58,217 INFO L124 PetriNetUnfolderBase]: 98/217 cut-off events. [2024-01-27 16:14:58,218 INFO L125 PetriNetUnfolderBase]: For 63/63 co-relation queries the response was YES. [2024-01-27 16:14:58,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 514 conditions, 217 events. 98/217 cut-off events. For 63/63 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 731 event pairs, 26 based on Foata normal form. 16/224 useless extension candidates. Maximal degree in co-relation 501. Up to 86 conditions per place. [2024-01-27 16:14:58,219 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 25 selfloop transitions, 6 changer transitions 1/41 dead transitions. [2024-01-27 16:14:58,219 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 41 transitions, 181 flow [2024-01-27 16:14:58,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-27 16:14:58,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-27 16:14:58,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 94 transitions. [2024-01-27 16:14:58,223 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5875 [2024-01-27 16:14:58,223 INFO L175 Difference]: Start difference. First operand has 37 places, 28 transitions, 86 flow. Second operand 5 states and 94 transitions. [2024-01-27 16:14:58,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 41 transitions, 181 flow [2024-01-27 16:14:58,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 41 transitions, 168 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-01-27 16:14:58,225 INFO L231 Difference]: Finished difference. Result has 40 places, 28 transitions, 98 flow [2024-01-27 16:14:58,225 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=75, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=98, PETRI_PLACES=40, PETRI_TRANSITIONS=28} [2024-01-27 16:14:58,226 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 4 predicate places. [2024-01-27 16:14:58,226 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 28 transitions, 98 flow [2024-01-27 16:14:58,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 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) [2024-01-27 16:14:58,227 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:14:58,227 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 16:14:58,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-27 16:14:58,227 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-27 16:14:58,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:14:58,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1125687472, now seen corresponding path program 1 times [2024-01-27 16:14:58,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:14:58,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680023087] [2024-01-27 16:14:58,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:14:58,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:14:58,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:14:58,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 16:14:58,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:14:58,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680023087] [2024-01-27 16:14:58,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680023087] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:14:58,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:14:58,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-27 16:14:58,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764562657] [2024-01-27 16:14:58,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:14:58,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-27 16:14:58,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:14:58,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-27 16:14:58,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-01-27 16:14:58,675 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 32 [2024-01-27 16:14:58,676 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 28 transitions, 98 flow. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 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) [2024-01-27 16:14:58,676 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:14:58,676 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 32 [2024-01-27 16:14:58,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:14:58,881 INFO L124 PetriNetUnfolderBase]: 91/220 cut-off events. [2024-01-27 16:14:58,882 INFO L125 PetriNetUnfolderBase]: For 100/100 co-relation queries the response was YES. [2024-01-27 16:14:58,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 524 conditions, 220 events. 91/220 cut-off events. For 100/100 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 778 event pairs, 17 based on Foata normal form. 4/215 useless extension candidates. Maximal degree in co-relation 510. Up to 51 conditions per place. [2024-01-27 16:14:58,897 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 22 selfloop transitions, 4 changer transitions 17/55 dead transitions. [2024-01-27 16:14:58,897 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 55 transitions, 248 flow [2024-01-27 16:14:58,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-27 16:14:58,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-27 16:14:58,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 152 transitions. [2024-01-27 16:14:58,898 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5277777777777778 [2024-01-27 16:14:58,898 INFO L175 Difference]: Start difference. First operand has 40 places, 28 transitions, 98 flow. Second operand 9 states and 152 transitions. [2024-01-27 16:14:58,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 55 transitions, 248 flow [2024-01-27 16:14:58,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 55 transitions, 214 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-01-27 16:14:58,900 INFO L231 Difference]: Finished difference. Result has 46 places, 28 transitions, 88 flow [2024-01-27 16:14:58,900 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=88, PETRI_PLACES=46, PETRI_TRANSITIONS=28} [2024-01-27 16:14:58,901 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 10 predicate places. [2024-01-27 16:14:58,901 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 28 transitions, 88 flow [2024-01-27 16:14:58,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 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) [2024-01-27 16:14:58,902 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:14:58,902 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 16:14:58,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-27 16:14:58,902 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-27 16:14:58,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:14:58,903 INFO L85 PathProgramCache]: Analyzing trace with hash -1926448608, now seen corresponding path program 2 times [2024-01-27 16:14:58,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:14:58,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014979993] [2024-01-27 16:14:58,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:14:58,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:14:58,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:14:59,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 16:14:59,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:14:59,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014979993] [2024-01-27 16:14:59,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014979993] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:14:59,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:14:59,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 16:14:59,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664867263] [2024-01-27 16:14:59,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:14:59,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 16:14:59,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:14:59,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 16:14:59,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-27 16:14:59,064 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-01-27 16:14:59,064 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 28 transitions, 88 flow. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 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) [2024-01-27 16:14:59,064 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:14:59,064 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-01-27 16:14:59,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:14:59,160 INFO L124 PetriNetUnfolderBase]: 142/331 cut-off events. [2024-01-27 16:14:59,160 INFO L125 PetriNetUnfolderBase]: For 71/71 co-relation queries the response was YES. [2024-01-27 16:14:59,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 745 conditions, 331 events. 142/331 cut-off events. For 71/71 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1369 event pairs, 66 based on Foata normal form. 4/328 useless extension candidates. Maximal degree in co-relation 730. Up to 153 conditions per place. [2024-01-27 16:14:59,161 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 19 selfloop transitions, 5 changer transitions 12/45 dead transitions. [2024-01-27 16:14:59,161 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 45 transitions, 208 flow [2024-01-27 16:14:59,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-27 16:14:59,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-27 16:14:59,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 82 transitions. [2024-01-27 16:14:59,162 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5125 [2024-01-27 16:14:59,163 INFO L175 Difference]: Start difference. First operand has 46 places, 28 transitions, 88 flow. Second operand 5 states and 82 transitions. [2024-01-27 16:14:59,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 45 transitions, 208 flow [2024-01-27 16:14:59,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 45 transitions, 184 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-01-27 16:14:59,164 INFO L231 Difference]: Finished difference. Result has 43 places, 31 transitions, 114 flow [2024-01-27 16:14:59,164 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=114, PETRI_PLACES=43, PETRI_TRANSITIONS=31} [2024-01-27 16:14:59,165 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 7 predicate places. [2024-01-27 16:14:59,165 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 31 transitions, 114 flow [2024-01-27 16:14:59,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 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) [2024-01-27 16:14:59,165 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:14:59,166 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 16:14:59,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-27 16:14:59,166 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-27 16:14:59,166 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:14:59,166 INFO L85 PathProgramCache]: Analyzing trace with hash -1255363404, now seen corresponding path program 3 times [2024-01-27 16:14:59,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:14:59,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951825121] [2024-01-27 16:14:59,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:14:59,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:14:59,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-27 16:14:59,193 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-01-27 16:14:59,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-27 16:14:59,247 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-01-27 16:14:59,247 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-01-27 16:14:59,248 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2024-01-27 16:14:59,252 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2024-01-27 16:14:59,254 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2024-01-27 16:14:59,254 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2024-01-27 16:14:59,254 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2024-01-27 16:14:59,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-01-27 16:14:59,254 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1] [2024-01-27 16:14:59,262 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-01-27 16:14:59,263 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-01-27 16:14:59,324 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.01 04:14:59 BasicIcfg [2024-01-27 16:14:59,327 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-01-27 16:14:59,327 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-01-27 16:14:59,327 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-01-27 16:14:59,328 INFO L274 PluginConnector]: Witness Printer initialized [2024-01-27 16:14:59,328 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 04:14:56" (3/4) ... [2024-01-27 16:14:59,329 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2024-01-27 16:14:59,403 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-01-27 16:14:59,403 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-01-27 16:14:59,403 INFO L158 Benchmark]: Toolchain (without parser) took 3947.75ms. Allocated memory was 155.2MB in the beginning and 260.0MB in the end (delta: 104.9MB). Free memory was 80.6MB in the beginning and 136.5MB in the end (delta: -55.9MB). Peak memory consumption was 52.1MB. Max. memory is 16.1GB. [2024-01-27 16:14:59,404 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 155.2MB. Free memory is still 107.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-01-27 16:14:59,404 INFO L158 Benchmark]: CACSL2BoogieTranslator took 488.87ms. Allocated memory was 155.2MB in the beginning and 197.1MB in the end (delta: 41.9MB). Free memory was 80.4MB in the beginning and 157.8MB in the end (delta: -77.4MB). Peak memory consumption was 18.2MB. Max. memory is 16.1GB. [2024-01-27 16:14:59,404 INFO L158 Benchmark]: Boogie Procedure Inliner took 53.57ms. Allocated memory is still 197.1MB. Free memory was 157.8MB in the beginning and 155.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-01-27 16:14:59,404 INFO L158 Benchmark]: Boogie Preprocessor took 43.60ms. Allocated memory is still 197.1MB. Free memory was 155.7MB in the beginning and 152.6MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-01-27 16:14:59,405 INFO L158 Benchmark]: RCFGBuilder took 635.99ms. Allocated memory is still 197.1MB. Free memory was 152.6MB in the beginning and 108.6MB in the end (delta: 44.0MB). Peak memory consumption was 44.0MB. Max. memory is 16.1GB. [2024-01-27 16:14:59,405 INFO L158 Benchmark]: TraceAbstraction took 2644.74ms. Allocated memory was 197.1MB in the beginning and 260.0MB in the end (delta: 62.9MB). Free memory was 108.6MB in the beginning and 144.9MB in the end (delta: -36.4MB). Peak memory consumption was 27.6MB. Max. memory is 16.1GB. [2024-01-27 16:14:59,405 INFO L158 Benchmark]: Witness Printer took 75.75ms. Allocated memory is still 260.0MB. Free memory was 144.9MB in the beginning and 136.5MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-01-27 16:14:59,407 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 155.2MB. Free memory is still 107.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 488.87ms. Allocated memory was 155.2MB in the beginning and 197.1MB in the end (delta: 41.9MB). Free memory was 80.4MB in the beginning and 157.8MB in the end (delta: -77.4MB). Peak memory consumption was 18.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 53.57ms. Allocated memory is still 197.1MB. Free memory was 157.8MB in the beginning and 155.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 43.60ms. Allocated memory is still 197.1MB. Free memory was 155.7MB in the beginning and 152.6MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 635.99ms. Allocated memory is still 197.1MB. Free memory was 152.6MB in the beginning and 108.6MB in the end (delta: 44.0MB). Peak memory consumption was 44.0MB. Max. memory is 16.1GB. * TraceAbstraction took 2644.74ms. Allocated memory was 197.1MB in the beginning and 260.0MB in the end (delta: 62.9MB). Free memory was 108.6MB in the beginning and 144.9MB in the end (delta: -36.4MB). Peak memory consumption was 27.6MB. Max. memory is 16.1GB. * Witness Printer took 75.75ms. Allocated memory is still 260.0MB. Free memory was 144.9MB in the beginning and 136.5MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L708] 0 int __unbuffered_cnt = 0; [L710] 0 int __unbuffered_p1_EAX = 0; [L712] 0 int __unbuffered_p1_EBX = 0; [L713] 0 _Bool main$tmp_guard0; [L714] 0 _Bool main$tmp_guard1; [L716] 0 int x = 0; [L717] 0 _Bool x$flush_delayed; [L718] 0 int x$mem_tmp; [L719] 0 _Bool x$r_buff0_thd0; [L720] 0 _Bool x$r_buff0_thd1; [L721] 0 _Bool x$r_buff0_thd2; [L722] 0 _Bool x$r_buff1_thd0; [L723] 0 _Bool x$r_buff1_thd1; [L724] 0 _Bool x$r_buff1_thd2; [L725] 0 _Bool x$read_delayed; [L726] 0 int *x$read_delayed_var; [L727] 0 int x$w_buff0; [L728] 0 _Bool x$w_buff0_used; [L729] 0 int x$w_buff1; [L730] 0 _Bool x$w_buff1_used; [L732] 0 int y = 0; [L734] 0 int z = 0; [L735] 0 _Bool weak$$choice0; [L736] 0 _Bool weak$$choice2; [L815] 0 pthread_t t1601; [L816] FCALL, FORK 0 pthread_create(&t1601, ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, main$tmp_guard0=0, main$tmp_guard1=0, t1601={5:0}, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=0, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x=0, y=0, z=0] [L740] 1 x$w_buff1 = x$w_buff0 [L741] 1 x$w_buff0 = 1 [L742] 1 x$w_buff1_used = x$w_buff0_used [L743] 1 x$w_buff0_used = (_Bool)1 [L744] CALL 1 __VERIFIER_assert(!(x$w_buff1_used && x$w_buff0_used)) [L18] COND FALSE 1 !(!expression) [L744] RET 1 __VERIFIER_assert(!(x$w_buff1_used && x$w_buff0_used)) [L745] 1 x$r_buff1_thd0 = x$r_buff0_thd0 [L746] 1 x$r_buff1_thd1 = x$r_buff0_thd1 [L747] 1 x$r_buff1_thd2 = x$r_buff0_thd2 [L748] 1 x$r_buff0_thd1 = (_Bool)1 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=1, x$r_buff0_thd2=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=1, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, x=0, y=0, z=0] [L817] 0 pthread_t t1602; [L818] FCALL, FORK 0 pthread_create(&t1602, ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, t1601={5:0}, t1602={3:0}, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=1, x$r_buff0_thd2=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=1, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, x=0, y=0, z=0] [L751] 1 y = 1 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=1, x$r_buff0_thd2=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=1, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, x=0, y=1, z=0] [L768] 2 y = 2 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=1, x$r_buff0_thd2=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=1, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, x=0, y=2, z=0] [L771] 2 z = 1 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=1, x$r_buff0_thd2=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=1, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, x=0, y=2, z=1] [L774] 2 __unbuffered_p1_EAX = z VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=1, x$r_buff0_thd2=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=1, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, x=0, y=2, z=1] [L777] 2 weak$$choice0 = __VERIFIER_nondet_bool() [L778] 2 weak$$choice2 = __VERIFIER_nondet_bool() [L779] 2 x$flush_delayed = weak$$choice2 [L780] 2 x$mem_tmp = x [L781] 2 x = !x$w_buff0_used || !x$r_buff0_thd2 && !x$w_buff1_used || !x$r_buff0_thd2 && !x$r_buff1_thd2 ? x : (x$w_buff0_used && x$r_buff0_thd2 ? x$w_buff0 : x$w_buff1) [L782] 2 x$w_buff0 = weak$$choice2 ? x$w_buff0 : (!x$w_buff0_used || !x$r_buff0_thd2 && !x$w_buff1_used || !x$r_buff0_thd2 && !x$r_buff1_thd2 ? x$w_buff0 : (x$w_buff0_used && x$r_buff0_thd2 ? x$w_buff0 : x$w_buff0)) [L783] 2 x$w_buff1 = weak$$choice2 ? x$w_buff1 : (!x$w_buff0_used || !x$r_buff0_thd2 && !x$w_buff1_used || !x$r_buff0_thd2 && !x$r_buff1_thd2 ? x$w_buff1 : (x$w_buff0_used && x$r_buff0_thd2 ? x$w_buff1 : x$w_buff1)) [L784] 2 x$w_buff0_used = weak$$choice2 ? x$w_buff0_used : (!x$w_buff0_used || !x$r_buff0_thd2 && !x$w_buff1_used || !x$r_buff0_thd2 && !x$r_buff1_thd2 ? x$w_buff0_used : (x$w_buff0_used && x$r_buff0_thd2 ? (_Bool)0 : x$w_buff0_used)) [L785] 2 x$w_buff1_used = weak$$choice2 ? x$w_buff1_used : (!x$w_buff0_used || !x$r_buff0_thd2 && !x$w_buff1_used || !x$r_buff0_thd2 && !x$r_buff1_thd2 ? x$w_buff1_used : (x$w_buff0_used && x$r_buff0_thd2 ? (_Bool)0 : (_Bool)0)) [L786] 2 x$r_buff0_thd2 = weak$$choice2 ? x$r_buff0_thd2 : (!x$w_buff0_used || !x$r_buff0_thd2 && !x$w_buff1_used || !x$r_buff0_thd2 && !x$r_buff1_thd2 ? x$r_buff0_thd2 : (x$w_buff0_used && x$r_buff0_thd2 ? (_Bool)0 : x$r_buff0_thd2)) [L787] 2 x$r_buff1_thd2 = weak$$choice2 ? x$r_buff1_thd2 : (!x$w_buff0_used || !x$r_buff0_thd2 && !x$w_buff1_used || !x$r_buff0_thd2 && !x$r_buff1_thd2 ? x$r_buff1_thd2 : (x$w_buff0_used && x$r_buff0_thd2 ? (_Bool)0 : (_Bool)0)) [L788] 2 __unbuffered_p1_EBX = x [L789] 2 x = x$flush_delayed ? x$mem_tmp : x [L790] 2 x$flush_delayed = (_Bool)0 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=1, x$r_buff0_thd2=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=1, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, x=0, y=2, z=1] [L754] 1 x = x$w_buff0_used && x$r_buff0_thd1 ? x$w_buff0 : (x$w_buff1_used && x$r_buff1_thd1 ? x$w_buff1 : x) [L755] 1 x$w_buff0_used = x$w_buff0_used && x$r_buff0_thd1 ? (_Bool)0 : x$w_buff0_used [L756] 1 x$w_buff1_used = x$w_buff0_used && x$r_buff0_thd1 || x$w_buff1_used && x$r_buff1_thd1 ? (_Bool)0 : x$w_buff1_used [L757] 1 x$r_buff0_thd1 = x$w_buff0_used && x$r_buff0_thd1 ? (_Bool)0 : x$r_buff0_thd1 [L758] 1 x$r_buff1_thd1 = x$w_buff0_used && x$r_buff0_thd1 || x$w_buff1_used && x$r_buff1_thd1 ? (_Bool)0 : x$r_buff1_thd1 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=1, x$r_buff0_thd2=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=1, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x=1, y=2, z=1] [L793] 2 x = x$w_buff0_used && x$r_buff0_thd2 ? x$w_buff0 : (x$w_buff1_used && x$r_buff1_thd2 ? x$w_buff1 : x) [L794] 2 x$w_buff0_used = x$w_buff0_used && x$r_buff0_thd2 ? (_Bool)0 : x$w_buff0_used [L795] 2 x$w_buff1_used = x$w_buff0_used && x$r_buff0_thd2 || x$w_buff1_used && x$r_buff1_thd2 ? (_Bool)0 : x$w_buff1_used [L796] 2 x$r_buff0_thd2 = x$w_buff0_used && x$r_buff0_thd2 ? (_Bool)0 : x$r_buff0_thd2 [L797] 2 x$r_buff1_thd2 = x$w_buff0_used && x$r_buff0_thd2 || x$w_buff1_used && x$r_buff1_thd2 ? (_Bool)0 : x$r_buff1_thd2 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=1, x$r_buff0_thd2=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=1, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x=1, y=2, z=1] [L761] 1 __unbuffered_cnt = __unbuffered_cnt + 1 VAL [__unbuffered_cnt=1, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=1, x$r_buff0_thd2=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=1, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x=1, y=2, z=1] [L800] 2 __unbuffered_cnt = __unbuffered_cnt + 1 VAL [__unbuffered_cnt=2, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=1, x$r_buff0_thd2=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=1, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x=1, y=2, z=1] [L820] 0 main$tmp_guard0 = __unbuffered_cnt == 2 VAL [__unbuffered_cnt=2, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=0, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t1601={5:0}, t1602={3:0}, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=1, x$r_buff0_thd2=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=1, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x=1, y=2, z=1] [L822] CALL 0 assume_abort_if_not(main$tmp_guard0) [L3] COND FALSE 0 !(!cond) [L822] RET 0 assume_abort_if_not(main$tmp_guard0) [L824] 0 x = x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff0 : (x$w_buff1_used && x$r_buff1_thd0 ? x$w_buff1 : x) [L825] 0 x$w_buff0_used = x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : x$w_buff0_used [L826] 0 x$w_buff1_used = x$w_buff0_used && x$r_buff0_thd0 || x$w_buff1_used && x$r_buff1_thd0 ? (_Bool)0 : x$w_buff1_used [L827] 0 x$r_buff0_thd0 = x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : x$r_buff0_thd0 [L828] 0 x$r_buff1_thd0 = x$w_buff0_used && x$r_buff0_thd0 || x$w_buff1_used && x$r_buff1_thd0 ? (_Bool)0 : x$r_buff1_thd0 VAL [__unbuffered_cnt=2, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=0, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t1601={5:0}, t1602={3:0}, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=1, x$r_buff0_thd2=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=1, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x=1, y=2, z=1] [L831] 0 main$tmp_guard1 = !(y == 2 && __unbuffered_p1_EAX == 1 && __unbuffered_p1_EBX == 0) VAL [__unbuffered_cnt=2, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=0, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t1601={5:0}, t1602={3:0}, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=1, x$r_buff0_thd2=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=1, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x=1, y=2, z=1] [L833] CALL 0 __VERIFIER_assert(main$tmp_guard1) [L18] COND TRUE 0 !expression VAL [\old(expression)=0, __unbuffered_cnt=2, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=0, arg={0:0}, arg={0:0}, expression=0, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=1, x$r_buff0_thd2=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=1, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x=1, y=2, z=1] [L18] 0 reach_error() VAL [\old(expression)=0, __unbuffered_cnt=2, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=0, arg={0:0}, arg={0:0}, expression=0, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=1, x$r_buff0_thd2=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=1, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x=1, y=2, z=1] - UnprovableResult [Line: 18]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 818]: 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: 816]: 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, 51 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: 2.5s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 172 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 157 mSDsluCounter, 49 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 39 mSDsCounter, 17 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 492 IncrementalHoareTripleChecker+Invalid, 509 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 17 mSolverCounterUnsat, 10 mSDtfsCounter, 492 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=114occurred in iteration=6, InterpolantAutomatonStates: 34, 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, 1.1s InterpolantComputationTime, 123 NumberOfCodeBlocks, 123 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 93 ConstructedInterpolants, 0 QuantifiedInterpolants, 416 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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 proved your program to be incorrect! [2024-01-27 16:14:59,455 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE