./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe018_pso.oepc_pso.opt_tso.oepc_tso.opt.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/safe018_pso.oepc_pso.opt_tso.oepc_tso.opt.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 e136f4ab00a1c93eb400bb9f2a21b2887cfec20e18dff1c5960bc25f16f1bcad --- Real Ultimate output --- This is Ultimate 0.2.4-dev-a340643-m [2024-01-27 15:10:30,557 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-27 15:10:30,612 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-27 15:10:30,616 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-27 15:10:30,616 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-27 15:10:30,633 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-27 15:10:30,634 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-27 15:10:30,634 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-27 15:10:30,635 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-27 15:10:30,635 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-27 15:10:30,635 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-27 15:10:30,636 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-27 15:10:30,636 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-27 15:10:30,637 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-27 15:10:30,637 INFO L153 SettingsManager]: * Use SBE=true [2024-01-27 15:10:30,637 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-27 15:10:30,638 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-27 15:10:30,638 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-27 15:10:30,638 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-27 15:10:30,639 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-27 15:10:30,639 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-27 15:10:30,640 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-27 15:10:30,640 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-27 15:10:30,640 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-27 15:10:30,641 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-27 15:10:30,641 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-27 15:10:30,641 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-27 15:10:30,642 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-27 15:10:30,642 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-27 15:10:30,642 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-27 15:10:30,643 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-27 15:10:30,643 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-27 15:10:30,643 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 15:10:30,644 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-27 15:10:30,644 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-27 15:10:30,644 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-27 15:10:30,645 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-27 15:10:30,645 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-27 15:10:30,645 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-27 15:10:30,646 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-27 15:10:30,646 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-27 15:10:30,647 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-27 15:10:30,647 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-27 15:10:30,647 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e136f4ab00a1c93eb400bb9f2a21b2887cfec20e18dff1c5960bc25f16f1bcad [2024-01-27 15:10:30,912 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-27 15:10:30,933 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-27 15:10:30,935 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-27 15:10:30,937 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-27 15:10:30,937 INFO L274 PluginConnector]: CDTParser initialized [2024-01-27 15:10:30,938 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe018_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2024-01-27 15:10:32,099 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-27 15:10:32,367 INFO L384 CDTParser]: Found 1 translation units. [2024-01-27 15:10:32,373 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe018_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2024-01-27 15:10:32,392 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3080f9741/049805ef179b412bb62c0fb1e9b92cdc/FLAG13343abb8 [2024-01-27 15:10:32,404 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3080f9741/049805ef179b412bb62c0fb1e9b92cdc [2024-01-27 15:10:32,405 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-27 15:10:32,407 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-01-27 15:10:32,408 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-27 15:10:32,408 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-27 15:10:32,414 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-27 15:10:32,415 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 03:10:32" (1/1) ... [2024-01-27 15:10:32,416 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31f611e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:10:32, skipping insertion in model container [2024-01-27 15:10:32,416 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 03:10:32" (1/1) ... [2024-01-27 15:10:32,454 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-01-27 15:10:32,591 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/safe018_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2024-01-27 15:10:32,773 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 15:10:32,784 INFO L202 MainTranslator]: Completed pre-run [2024-01-27 15:10:32,800 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/safe018_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2024-01-27 15:10:32,842 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 15:10:32,884 INFO L206 MainTranslator]: Completed translation [2024-01-27 15:10:32,884 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:10:32 WrapperNode [2024-01-27 15:10:32,885 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-27 15:10:32,886 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-27 15:10:32,886 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-27 15:10:32,886 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-27 15:10:32,892 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:10:32" (1/1) ... [2024-01-27 15:10:32,915 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:10:32" (1/1) ... [2024-01-27 15:10:32,935 INFO L138 Inliner]: procedures = 176, calls = 51, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 70 [2024-01-27 15:10:32,938 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-27 15:10:32,938 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-27 15:10:32,938 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-27 15:10:32,939 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-27 15:10:32,948 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:10:32" (1/1) ... [2024-01-27 15:10:32,949 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:10:32" (1/1) ... [2024-01-27 15:10:32,960 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:10:32" (1/1) ... [2024-01-27 15:10:32,987 INFO L175 MemorySlicer]: Split 5 memory accesses to 4 slices as follows [2, 1, 1, 1]. 40 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 3 writes are split as follows [0, 1, 1, 1]. [2024-01-27 15:10:32,988 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:10:32" (1/1) ... [2024-01-27 15:10:32,988 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:10:32" (1/1) ... [2024-01-27 15:10:32,998 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:10:32" (1/1) ... [2024-01-27 15:10:33,001 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:10:32" (1/1) ... [2024-01-27 15:10:33,007 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:10:32" (1/1) ... [2024-01-27 15:10:33,011 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:10:32" (1/1) ... [2024-01-27 15:10:33,014 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-27 15:10:33,016 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-27 15:10:33,017 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-27 15:10:33,017 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-27 15:10:33,018 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:10:32" (1/1) ... [2024-01-27 15:10:33,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 15:10:33,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:10:33,061 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 15:10:33,095 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 15:10:33,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-27 15:10:33,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-27 15:10:33,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-27 15:10:33,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-27 15:10:33,122 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-01-27 15:10:33,122 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-27 15:10:33,123 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-27 15:10:33,124 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-27 15:10:33,124 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-01-27 15:10:33,124 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-01-27 15:10:33,124 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-01-27 15:10:33,124 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-01-27 15:10:33,124 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-01-27 15:10:33,124 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-01-27 15:10:33,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-27 15:10:33,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-27 15:10:33,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-27 15:10:33,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-27 15:10:33,126 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-01-27 15:10:33,126 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-27 15:10:33,126 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-27 15:10:33,129 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 15:10:33,319 INFO L244 CfgBuilder]: Building ICFG [2024-01-27 15:10:33,321 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-27 15:10:33,477 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-27 15:10:33,477 INFO L293 CfgBuilder]: Performing block encoding [2024-01-27 15:10:33,578 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-27 15:10:33,579 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-01-27 15:10:33,579 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 03:10:33 BoogieIcfgContainer [2024-01-27 15:10:33,579 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-27 15:10:33,581 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-27 15:10:33,581 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-27 15:10:33,584 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-27 15:10:33,585 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 03:10:32" (1/3) ... [2024-01-27 15:10:33,585 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f8e585b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 03:10:33, skipping insertion in model container [2024-01-27 15:10:33,585 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:10:32" (2/3) ... [2024-01-27 15:10:33,586 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f8e585b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 03:10:33, skipping insertion in model container [2024-01-27 15:10:33,586 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 03:10:33" (3/3) ... [2024-01-27 15:10:33,587 INFO L112 eAbstractionObserver]: Analyzing ICFG safe018_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2024-01-27 15:10:33,594 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2024-01-27 15:10:33,603 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-27 15:10:33,603 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-01-27 15:10:33,603 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-27 15:10:33,645 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-01-27 15:10:33,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 46 places, 37 transitions, 86 flow [2024-01-27 15:10:33,702 INFO L124 PetriNetUnfolderBase]: 1/34 cut-off events. [2024-01-27 15:10:33,702 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-27 15:10:33,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44 conditions, 34 events. 1/34 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 56 event pairs, 0 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 36. Up to 2 conditions per place. [2024-01-27 15:10:33,705 INFO L82 GeneralOperation]: Start removeDead. Operand has 46 places, 37 transitions, 86 flow [2024-01-27 15:10:33,708 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 41 places, 31 transitions, 71 flow [2024-01-27 15:10:33,715 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-27 15:10:33,722 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;@3a672f47, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-27 15:10:33,722 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-01-27 15:10:33,732 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-27 15:10:33,734 INFO L124 PetriNetUnfolderBase]: 0/30 cut-off events. [2024-01-27 15:10:33,734 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-27 15:10:33,734 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:10:33,735 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:10:33,735 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:10:33,740 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:10:33,741 INFO L85 PathProgramCache]: Analyzing trace with hash -2064864355, now seen corresponding path program 1 times [2024-01-27 15:10:33,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:10:33,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301745582] [2024-01-27 15:10:33,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:10:33,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:10:33,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:10:34,357 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 15:10:34,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:10:34,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301745582] [2024-01-27 15:10:34,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301745582] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:10:34,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:10:34,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-27 15:10:34,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30420775] [2024-01-27 15:10:34,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:10:34,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 15:10:34,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:10:34,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 15:10:34,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-27 15:10:34,411 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 37 [2024-01-27 15:10:34,415 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 31 transitions, 71 flow. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 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 15:10:34,415 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:10:34,415 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 37 [2024-01-27 15:10:34,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:10:34,665 INFO L124 PetriNetUnfolderBase]: 334/710 cut-off events. [2024-01-27 15:10:34,666 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2024-01-27 15:10:34,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1286 conditions, 710 events. 334/710 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 4523 event pairs, 118 based on Foata normal form. 24/709 useless extension candidates. Maximal degree in co-relation 1275. Up to 411 conditions per place. [2024-01-27 15:10:34,674 INFO L140 encePairwiseOnDemand]: 31/37 looper letters, 23 selfloop transitions, 3 changer transitions 21/61 dead transitions. [2024-01-27 15:10:34,675 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 61 transitions, 231 flow [2024-01-27 15:10:34,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-27 15:10:34,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-27 15:10:34,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 168 transitions. [2024-01-27 15:10:34,688 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6486486486486487 [2024-01-27 15:10:34,689 INFO L175 Difference]: Start difference. First operand has 41 places, 31 transitions, 71 flow. Second operand 7 states and 168 transitions. [2024-01-27 15:10:34,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 61 transitions, 231 flow [2024-01-27 15:10:34,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 61 transitions, 226 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-01-27 15:10:34,695 INFO L231 Difference]: Finished difference. Result has 49 places, 33 transitions, 103 flow [2024-01-27 15:10:34,697 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=103, PETRI_PLACES=49, PETRI_TRANSITIONS=33} [2024-01-27 15:10:34,705 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 8 predicate places. [2024-01-27 15:10:34,705 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 33 transitions, 103 flow [2024-01-27 15:10:34,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 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 15:10:34,706 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:10:34,706 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:10:34,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-27 15:10:34,707 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:10:34,707 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:10:34,707 INFO L85 PathProgramCache]: Analyzing trace with hash 1395086268, now seen corresponding path program 1 times [2024-01-27 15:10:34,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:10:34,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086022394] [2024-01-27 15:10:34,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:10:34,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:10:34,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:10:34,889 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 15:10:34,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:10:34,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086022394] [2024-01-27 15:10:34,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086022394] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:10:34,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:10:34,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 15:10:34,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898885432] [2024-01-27 15:10:34,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:10:34,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-27 15:10:34,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:10:34,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-27 15:10:34,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-01-27 15:10:34,927 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 37 [2024-01-27 15:10:34,927 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 33 transitions, 103 flow. Second operand has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 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 15:10:34,927 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:10:34,928 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 37 [2024-01-27 15:10:34,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:10:35,273 INFO L124 PetriNetUnfolderBase]: 511/1025 cut-off events. [2024-01-27 15:10:35,274 INFO L125 PetriNetUnfolderBase]: For 702/702 co-relation queries the response was YES. [2024-01-27 15:10:35,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2374 conditions, 1025 events. 511/1025 cut-off events. For 702/702 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 6911 event pairs, 63 based on Foata normal form. 30/1044 useless extension candidates. Maximal degree in co-relation 2359. Up to 321 conditions per place. [2024-01-27 15:10:35,287 INFO L140 encePairwiseOnDemand]: 29/37 looper letters, 40 selfloop transitions, 8 changer transitions 38/99 dead transitions. [2024-01-27 15:10:35,288 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 99 transitions, 493 flow [2024-01-27 15:10:35,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-01-27 15:10:35,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-01-27 15:10:35,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 297 transitions. [2024-01-27 15:10:35,293 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6174636174636174 [2024-01-27 15:10:35,293 INFO L175 Difference]: Start difference. First operand has 49 places, 33 transitions, 103 flow. Second operand 13 states and 297 transitions. [2024-01-27 15:10:35,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 99 transitions, 493 flow [2024-01-27 15:10:35,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 99 transitions, 466 flow, removed 12 selfloop flow, removed 3 redundant places. [2024-01-27 15:10:35,300 INFO L231 Difference]: Finished difference. Result has 65 places, 38 transitions, 187 flow [2024-01-27 15:10:35,301 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=187, PETRI_PLACES=65, PETRI_TRANSITIONS=38} [2024-01-27 15:10:35,301 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 24 predicate places. [2024-01-27 15:10:35,302 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 38 transitions, 187 flow [2024-01-27 15:10:35,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 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 15:10:35,302 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:10:35,303 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:10:35,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-27 15:10:35,306 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:10:35,307 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:10:35,308 INFO L85 PathProgramCache]: Analyzing trace with hash -1412354468, now seen corresponding path program 1 times [2024-01-27 15:10:35,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:10:35,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656065502] [2024-01-27 15:10:35,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:10:35,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:10:35,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:10:35,457 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 15:10:35,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:10:35,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656065502] [2024-01-27 15:10:35,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656065502] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:10:35,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:10:35,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 15:10:35,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439807124] [2024-01-27 15:10:35,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:10:35,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-27 15:10:35,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:10:35,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-27 15:10:35,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-01-27 15:10:35,469 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 37 [2024-01-27 15:10:35,469 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 38 transitions, 187 flow. Second operand has 6 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 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 15:10:35,469 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:10:35,469 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 37 [2024-01-27 15:10:35,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:10:35,625 INFO L124 PetriNetUnfolderBase]: 341/700 cut-off events. [2024-01-27 15:10:35,625 INFO L125 PetriNetUnfolderBase]: For 2314/2320 co-relation queries the response was YES. [2024-01-27 15:10:35,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2341 conditions, 700 events. 341/700 cut-off events. For 2314/2320 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 4209 event pairs, 137 based on Foata normal form. 30/707 useless extension candidates. Maximal degree in co-relation 2316. Up to 399 conditions per place. [2024-01-27 15:10:35,631 INFO L140 encePairwiseOnDemand]: 32/37 looper letters, 27 selfloop transitions, 4 changer transitions 23/69 dead transitions. [2024-01-27 15:10:35,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 69 transitions, 461 flow [2024-01-27 15:10:35,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-27 15:10:35,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-27 15:10:35,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 164 transitions. [2024-01-27 15:10:35,633 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6332046332046332 [2024-01-27 15:10:35,633 INFO L175 Difference]: Start difference. First operand has 65 places, 38 transitions, 187 flow. Second operand 7 states and 164 transitions. [2024-01-27 15:10:35,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 69 transitions, 461 flow [2024-01-27 15:10:35,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 69 transitions, 406 flow, removed 25 selfloop flow, removed 7 redundant places. [2024-01-27 15:10:35,642 INFO L231 Difference]: Finished difference. Result has 61 places, 38 transitions, 184 flow [2024-01-27 15:10:35,642 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=184, PETRI_PLACES=61, PETRI_TRANSITIONS=38} [2024-01-27 15:10:35,643 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 20 predicate places. [2024-01-27 15:10:35,643 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 38 transitions, 184 flow [2024-01-27 15:10:35,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 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 15:10:35,658 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:10:35,659 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:10:35,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-27 15:10:35,659 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:10:35,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:10:35,660 INFO L85 PathProgramCache]: Analyzing trace with hash 2053341702, now seen corresponding path program 1 times [2024-01-27 15:10:35,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:10:35,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290839224] [2024-01-27 15:10:35,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:10:35,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:10:35,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:10:35,785 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 15:10:35,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:10:35,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290839224] [2024-01-27 15:10:35,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290839224] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:10:35,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:10:35,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-27 15:10:35,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318678316] [2024-01-27 15:10:35,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:10:35,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-27 15:10:35,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:10:35,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-27 15:10:35,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-01-27 15:10:35,810 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 37 [2024-01-27 15:10:35,810 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 38 transitions, 184 flow. Second operand has 7 states, 7 states have (on average 17.857142857142858) internal successors, (125), 7 states have internal predecessors, (125), 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 15:10:35,811 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:10:35,811 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 37 [2024-01-27 15:10:35,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:10:35,990 INFO L124 PetriNetUnfolderBase]: 410/822 cut-off events. [2024-01-27 15:10:35,990 INFO L125 PetriNetUnfolderBase]: For 1788/1788 co-relation queries the response was YES. [2024-01-27 15:10:35,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2458 conditions, 822 events. 410/822 cut-off events. For 1788/1788 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 5298 event pairs, 144 based on Foata normal form. 22/827 useless extension candidates. Maximal degree in co-relation 2433. Up to 193 conditions per place. [2024-01-27 15:10:35,995 INFO L140 encePairwiseOnDemand]: 31/37 looper letters, 22 selfloop transitions, 3 changer transitions 33/71 dead transitions. [2024-01-27 15:10:35,995 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 71 transitions, 474 flow [2024-01-27 15:10:35,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-27 15:10:35,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-27 15:10:35,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 182 transitions. [2024-01-27 15:10:35,997 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6148648648648649 [2024-01-27 15:10:35,997 INFO L175 Difference]: Start difference. First operand has 61 places, 38 transitions, 184 flow. Second operand 8 states and 182 transitions. [2024-01-27 15:10:35,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 71 transitions, 474 flow [2024-01-27 15:10:36,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 71 transitions, 430 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-01-27 15:10:36,002 INFO L231 Difference]: Finished difference. Result has 63 places, 31 transitions, 130 flow [2024-01-27 15:10:36,003 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=130, PETRI_PLACES=63, PETRI_TRANSITIONS=31} [2024-01-27 15:10:36,003 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 22 predicate places. [2024-01-27 15:10:36,003 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 31 transitions, 130 flow [2024-01-27 15:10:36,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.857142857142858) internal successors, (125), 7 states have internal predecessors, (125), 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 15:10:36,004 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:10:36,004 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 15:10:36,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-27 15:10:36,005 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:10:36,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:10:36,005 INFO L85 PathProgramCache]: Analyzing trace with hash -1757665718, now seen corresponding path program 1 times [2024-01-27 15:10:36,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:10:36,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710353960] [2024-01-27 15:10:36,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:10:36,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:10:36,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:10:36,168 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 15:10:36,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:10:36,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710353960] [2024-01-27 15:10:36,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710353960] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:10:36,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:10:36,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-27 15:10:36,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248082870] [2024-01-27 15:10:36,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:10:36,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-27 15:10:36,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:10:36,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-27 15:10:36,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-01-27 15:10:36,206 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 37 [2024-01-27 15:10:36,206 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 31 transitions, 130 flow. Second operand has 7 states, 7 states have (on average 17.857142857142858) internal successors, (125), 7 states have internal predecessors, (125), 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 15:10:36,207 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:10:36,207 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 37 [2024-01-27 15:10:36,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:10:36,406 INFO L124 PetriNetUnfolderBase]: 325/673 cut-off events. [2024-01-27 15:10:36,406 INFO L125 PetriNetUnfolderBase]: For 1326/1326 co-relation queries the response was YES. [2024-01-27 15:10:36,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1988 conditions, 673 events. 325/673 cut-off events. For 1326/1326 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3932 event pairs, 85 based on Foata normal form. 18/675 useless extension candidates. Maximal degree in co-relation 1962. Up to 219 conditions per place. [2024-01-27 15:10:36,411 INFO L140 encePairwiseOnDemand]: 31/37 looper letters, 22 selfloop transitions, 3 changer transitions 29/67 dead transitions. [2024-01-27 15:10:36,411 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 67 transitions, 422 flow [2024-01-27 15:10:36,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-27 15:10:36,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-27 15:10:36,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 184 transitions. [2024-01-27 15:10:36,413 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6216216216216216 [2024-01-27 15:10:36,413 INFO L175 Difference]: Start difference. First operand has 63 places, 31 transitions, 130 flow. Second operand 8 states and 184 transitions. [2024-01-27 15:10:36,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 67 transitions, 422 flow [2024-01-27 15:10:36,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 67 transitions, 323 flow, removed 36 selfloop flow, removed 15 redundant places. [2024-01-27 15:10:36,421 INFO L231 Difference]: Finished difference. Result has 56 places, 31 transitions, 110 flow [2024-01-27 15:10:36,422 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=110, PETRI_PLACES=56, PETRI_TRANSITIONS=31} [2024-01-27 15:10:36,424 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 15 predicate places. [2024-01-27 15:10:36,424 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 31 transitions, 110 flow [2024-01-27 15:10:36,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.857142857142858) internal successors, (125), 7 states have internal predecessors, (125), 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 15:10:36,424 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:10:36,424 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] [2024-01-27 15:10:36,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-27 15:10:36,425 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:10:36,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:10:36,430 INFO L85 PathProgramCache]: Analyzing trace with hash 249785581, now seen corresponding path program 1 times [2024-01-27 15:10:36,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:10:36,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269661961] [2024-01-27 15:10:36,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:10:36,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:10:36,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:10:36,553 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 15:10:36,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:10:36,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269661961] [2024-01-27 15:10:36,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269661961] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:10:36,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:10:36,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-27 15:10:36,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420489961] [2024-01-27 15:10:36,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:10:36,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 15:10:36,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:10:36,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 15:10:36,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-27 15:10:36,564 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 37 [2024-01-27 15:10:36,565 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 31 transitions, 110 flow. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:10:36,565 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:10:36,565 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 37 [2024-01-27 15:10:36,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:10:36,652 INFO L124 PetriNetUnfolderBase]: 315/625 cut-off events. [2024-01-27 15:10:36,653 INFO L125 PetriNetUnfolderBase]: For 515/515 co-relation queries the response was YES. [2024-01-27 15:10:36,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1504 conditions, 625 events. 315/625 cut-off events. For 515/515 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 3345 event pairs, 104 based on Foata normal form. 27/623 useless extension candidates. Maximal degree in co-relation 1484. Up to 273 conditions per place. [2024-01-27 15:10:36,658 INFO L140 encePairwiseOnDemand]: 31/37 looper letters, 23 selfloop transitions, 5 changer transitions 1/44 dead transitions. [2024-01-27 15:10:36,658 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 44 transitions, 196 flow [2024-01-27 15:10:36,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-27 15:10:36,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-27 15:10:36,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 107 transitions. [2024-01-27 15:10:36,659 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.722972972972973 [2024-01-27 15:10:36,659 INFO L175 Difference]: Start difference. First operand has 56 places, 31 transitions, 110 flow. Second operand 4 states and 107 transitions. [2024-01-27 15:10:36,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 44 transitions, 196 flow [2024-01-27 15:10:36,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 44 transitions, 176 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-01-27 15:10:36,662 INFO L231 Difference]: Finished difference. Result has 49 places, 34 transitions, 124 flow [2024-01-27 15:10:36,662 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=124, PETRI_PLACES=49, PETRI_TRANSITIONS=34} [2024-01-27 15:10:36,664 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 8 predicate places. [2024-01-27 15:10:36,665 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 34 transitions, 124 flow [2024-01-27 15:10:36,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:10:36,665 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:10:36,665 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] [2024-01-27 15:10:36,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-27 15:10:36,665 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:10:36,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:10:36,666 INFO L85 PathProgramCache]: Analyzing trace with hash -2126570806, now seen corresponding path program 1 times [2024-01-27 15:10:36,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:10:36,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444324775] [2024-01-27 15:10:36,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:10:36,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:10:36,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:10:36,790 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 15:10:36,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:10:36,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444324775] [2024-01-27 15:10:36,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444324775] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:10:36,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:10:36,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-27 15:10:36,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693150597] [2024-01-27 15:10:36,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:10:36,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 15:10:36,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:10:36,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 15:10:36,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-01-27 15:10:36,800 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 37 [2024-01-27 15:10:36,801 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 34 transitions, 124 flow. Second operand has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:10:36,801 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:10:36,801 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 37 [2024-01-27 15:10:36,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:10:36,890 INFO L124 PetriNetUnfolderBase]: 245/505 cut-off events. [2024-01-27 15:10:36,890 INFO L125 PetriNetUnfolderBase]: For 260/318 co-relation queries the response was YES. [2024-01-27 15:10:36,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1270 conditions, 505 events. 245/505 cut-off events. For 260/318 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2470 event pairs, 27 based on Foata normal form. 30/516 useless extension candidates. Maximal degree in co-relation 1254. Up to 181 conditions per place. [2024-01-27 15:10:36,894 INFO L140 encePairwiseOnDemand]: 31/37 looper letters, 27 selfloop transitions, 8 changer transitions 1/51 dead transitions. [2024-01-27 15:10:36,894 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 51 transitions, 247 flow [2024-01-27 15:10:36,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-27 15:10:36,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-27 15:10:36,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 133 transitions. [2024-01-27 15:10:36,896 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7189189189189189 [2024-01-27 15:10:36,896 INFO L175 Difference]: Start difference. First operand has 49 places, 34 transitions, 124 flow. Second operand 5 states and 133 transitions. [2024-01-27 15:10:36,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 51 transitions, 247 flow [2024-01-27 15:10:36,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 51 transitions, 237 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-01-27 15:10:36,898 INFO L231 Difference]: Finished difference. Result has 53 places, 37 transitions, 164 flow [2024-01-27 15:10:36,899 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=164, PETRI_PLACES=53, PETRI_TRANSITIONS=37} [2024-01-27 15:10:36,900 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 12 predicate places. [2024-01-27 15:10:36,900 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 37 transitions, 164 flow [2024-01-27 15:10:36,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:10:36,900 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:10:36,901 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, 1] [2024-01-27 15:10:36,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-01-27 15:10:36,901 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:10:36,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:10:36,902 INFO L85 PathProgramCache]: Analyzing trace with hash -871668359, now seen corresponding path program 1 times [2024-01-27 15:10:36,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:10:36,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403219093] [2024-01-27 15:10:36,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:10:36,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:10:36,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:10:37,018 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 15:10:37,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:10:37,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403219093] [2024-01-27 15:10:37,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403219093] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:10:37,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:10:37,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 15:10:37,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083106307] [2024-01-27 15:10:37,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:10:37,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-27 15:10:37,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:10:37,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-27 15:10:37,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-01-27 15:10:37,024 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 37 [2024-01-27 15:10:37,024 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 37 transitions, 164 flow. Second operand has 6 states, 6 states have (on average 21.0) internal successors, (126), 6 states have internal predecessors, (126), 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 15:10:37,024 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:10:37,025 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 37 [2024-01-27 15:10:37,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:10:37,110 INFO L124 PetriNetUnfolderBase]: 150/300 cut-off events. [2024-01-27 15:10:37,110 INFO L125 PetriNetUnfolderBase]: For 379/495 co-relation queries the response was YES. [2024-01-27 15:10:37,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 850 conditions, 300 events. 150/300 cut-off events. For 379/495 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1042 event pairs, 6 based on Foata normal form. 28/315 useless extension candidates. Maximal degree in co-relation 832. Up to 84 conditions per place. [2024-01-27 15:10:37,112 INFO L140 encePairwiseOnDemand]: 31/37 looper letters, 25 selfloop transitions, 11 changer transitions 1/52 dead transitions. [2024-01-27 15:10:37,113 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 52 transitions, 274 flow [2024-01-27 15:10:37,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-27 15:10:37,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-27 15:10:37,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 153 transitions. [2024-01-27 15:10:37,114 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6891891891891891 [2024-01-27 15:10:37,114 INFO L175 Difference]: Start difference. First operand has 53 places, 37 transitions, 164 flow. Second operand 6 states and 153 transitions. [2024-01-27 15:10:37,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 52 transitions, 274 flow [2024-01-27 15:10:37,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 52 transitions, 231 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-01-27 15:10:37,117 INFO L231 Difference]: Finished difference. Result has 52 places, 37 transitions, 160 flow [2024-01-27 15:10:37,118 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=160, PETRI_PLACES=52, PETRI_TRANSITIONS=37} [2024-01-27 15:10:37,120 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 11 predicate places. [2024-01-27 15:10:37,120 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 37 transitions, 160 flow [2024-01-27 15:10:37,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.0) internal successors, (126), 6 states have internal predecessors, (126), 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 15:10:37,120 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:10:37,120 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, 1, 1, 1, 1] [2024-01-27 15:10:37,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-01-27 15:10:37,121 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:10:37,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:10:37,121 INFO L85 PathProgramCache]: Analyzing trace with hash -1628705144, now seen corresponding path program 1 times [2024-01-27 15:10:37,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:10:37,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94375994] [2024-01-27 15:10:37,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:10:37,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:10:37,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:10:37,274 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 15:10:37,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:10:37,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94375994] [2024-01-27 15:10:37,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94375994] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:10:37,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:10:37,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-27 15:10:37,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26122942] [2024-01-27 15:10:37,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:10:37,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-27 15:10:37,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:10:37,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-27 15:10:37,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-01-27 15:10:37,295 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 37 [2024-01-27 15:10:37,295 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 37 transitions, 160 flow. Second operand has 6 states, 6 states have (on average 18.5) internal successors, (111), 6 states have internal predecessors, (111), 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 15:10:37,295 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:10:37,295 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 37 [2024-01-27 15:10:37,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:10:37,389 INFO L124 PetriNetUnfolderBase]: 116/262 cut-off events. [2024-01-27 15:10:37,389 INFO L125 PetriNetUnfolderBase]: For 190/194 co-relation queries the response was YES. [2024-01-27 15:10:37,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 652 conditions, 262 events. 116/262 cut-off events. For 190/194 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 979 event pairs, 26 based on Foata normal form. 8/251 useless extension candidates. Maximal degree in co-relation 637. Up to 98 conditions per place. [2024-01-27 15:10:37,391 INFO L140 encePairwiseOnDemand]: 30/37 looper letters, 0 selfloop transitions, 0 changer transitions 47/47 dead transitions. [2024-01-27 15:10:37,391 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 47 transitions, 240 flow [2024-01-27 15:10:37,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-27 15:10:37,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-27 15:10:37,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 142 transitions. [2024-01-27 15:10:37,392 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5482625482625483 [2024-01-27 15:10:37,392 INFO L175 Difference]: Start difference. First operand has 52 places, 37 transitions, 160 flow. Second operand 7 states and 142 transitions. [2024-01-27 15:10:37,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 47 transitions, 240 flow [2024-01-27 15:10:37,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 47 transitions, 184 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-01-27 15:10:37,394 INFO L231 Difference]: Finished difference. Result has 48 places, 0 transitions, 0 flow [2024-01-27 15:10:37,394 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=48, PETRI_TRANSITIONS=0} [2024-01-27 15:10:37,394 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 7 predicate places. [2024-01-27 15:10:37,395 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 0 transitions, 0 flow [2024-01-27 15:10:37,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.5) internal successors, (111), 6 states have internal predecessors, (111), 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 15:10:37,397 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2024-01-27 15:10:37,398 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2024-01-27 15:10:37,398 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-01-27 15:10:37,398 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-01-27 15:10:37,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-01-27 15:10:37,399 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:10:37,401 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-01-27 15:10:37,401 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-01-27 15:10:37,406 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.01 03:10:37 BasicIcfg [2024-01-27 15:10:37,406 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-01-27 15:10:37,406 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-01-27 15:10:37,406 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-01-27 15:10:37,407 INFO L274 PluginConnector]: Witness Printer initialized [2024-01-27 15:10:37,407 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 03:10:33" (3/4) ... [2024-01-27 15:10:37,409 INFO L137 WitnessPrinter]: Generating witness for correct program [2024-01-27 15:10:37,411 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2024-01-27 15:10:37,412 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2024-01-27 15:10:37,412 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2024-01-27 15:10:37,415 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 35 nodes and edges [2024-01-27 15:10:37,416 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2024-01-27 15:10:37,416 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-01-27 15:10:37,416 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-01-27 15:10:37,477 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-01-27 15:10:37,478 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-01-27 15:10:37,478 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-01-27 15:10:37,478 INFO L158 Benchmark]: Toolchain (without parser) took 5071.80ms. Allocated memory was 163.6MB in the beginning and 239.1MB in the end (delta: 75.5MB). Free memory was 129.3MB in the beginning and 75.8MB in the end (delta: 53.5MB). Peak memory consumption was 128.7MB. Max. memory is 16.1GB. [2024-01-27 15:10:37,479 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 163.6MB. Free memory is still 123.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-01-27 15:10:37,479 INFO L158 Benchmark]: CACSL2BoogieTranslator took 477.29ms. Allocated memory is still 163.6MB. Free memory was 129.3MB in the beginning and 108.3MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-01-27 15:10:37,479 INFO L158 Benchmark]: Boogie Procedure Inliner took 52.06ms. Allocated memory is still 163.6MB. Free memory was 108.3MB in the beginning and 106.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-01-27 15:10:37,479 INFO L158 Benchmark]: Boogie Preprocessor took 77.25ms. Allocated memory is still 163.6MB. Free memory was 106.2MB in the beginning and 104.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-01-27 15:10:37,480 INFO L158 Benchmark]: RCFGBuilder took 563.07ms. Allocated memory is still 163.6MB. Free memory was 104.1MB in the beginning and 117.6MB in the end (delta: -13.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-01-27 15:10:37,480 INFO L158 Benchmark]: TraceAbstraction took 3824.76ms. Allocated memory was 163.6MB in the beginning and 239.1MB in the end (delta: 75.5MB). Free memory was 116.6MB in the beginning and 81.0MB in the end (delta: 35.5MB). Peak memory consumption was 113.0MB. Max. memory is 16.1GB. [2024-01-27 15:10:37,480 INFO L158 Benchmark]: Witness Printer took 71.48ms. Allocated memory is still 239.1MB. Free memory was 81.0MB in the beginning and 75.8MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-01-27 15:10:37,482 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 163.6MB. Free memory is still 123.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 477.29ms. Allocated memory is still 163.6MB. Free memory was 129.3MB in the beginning and 108.3MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 52.06ms. Allocated memory is still 163.6MB. Free memory was 108.3MB in the beginning and 106.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 77.25ms. Allocated memory is still 163.6MB. Free memory was 106.2MB in the beginning and 104.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 563.07ms. Allocated memory is still 163.6MB. Free memory was 104.1MB in the beginning and 117.6MB in the end (delta: -13.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 3824.76ms. Allocated memory was 163.6MB in the beginning and 239.1MB in the end (delta: 75.5MB). Free memory was 116.6MB in the beginning and 81.0MB in the end (delta: 35.5MB). Peak memory consumption was 113.0MB. Max. memory is 16.1GB. * Witness Printer took 71.48ms. Allocated memory is still 239.1MB. Free memory was 81.0MB in the beginning and 75.8MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 60 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.7s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 379 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 332 mSDsluCounter, 288 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 206 mSDsCounter, 19 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 765 IncrementalHoareTripleChecker+Invalid, 784 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 19 mSolverCounterUnsat, 82 mSDtfsCounter, 765 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 77 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=187occurred in iteration=2, InterpolantAutomatonStates: 65, 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, 0.2s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 179 NumberOfCodeBlocks, 179 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 170 ConstructedInterpolants, 0 QuantifiedInterpolants, 812 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-01-27 15:10:37,504 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE