./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix030_tso.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/mix030_tso.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 20a2c57970e5e291ffc10826c9a5fbe3296a1e55ae86cfd2b786718aae571bfa --- Real Ultimate output --- This is Ultimate 0.2.4-dev-a340643-m [2024-01-27 16:12:46,625 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-27 16:12:46,692 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-27 16:12:46,697 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-27 16:12:46,697 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-27 16:12:46,720 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-27 16:12:46,721 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-27 16:12:46,721 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-27 16:12:46,722 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-27 16:12:46,725 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-27 16:12:46,725 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-27 16:12:46,725 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-27 16:12:46,726 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-27 16:12:46,727 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-27 16:12:46,727 INFO L153 SettingsManager]: * Use SBE=true [2024-01-27 16:12:46,727 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-27 16:12:46,727 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-27 16:12:46,728 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-27 16:12:46,728 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-27 16:12:46,728 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-27 16:12:46,728 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-27 16:12:46,729 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-27 16:12:46,729 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-27 16:12:46,729 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-27 16:12:46,729 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-27 16:12:46,730 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-27 16:12:46,730 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-27 16:12:46,730 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-27 16:12:46,731 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-27 16:12:46,731 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-27 16:12:46,732 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-27 16:12:46,732 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-27 16:12:46,732 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 16:12:46,732 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-27 16:12:46,733 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-27 16:12:46,733 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-27 16:12:46,733 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-27 16:12:46,733 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-27 16:12:46,733 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-27 16:12:46,734 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-27 16:12:46,734 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-27 16:12:46,734 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-27 16:12:46,734 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-27 16:12:46,734 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 20a2c57970e5e291ffc10826c9a5fbe3296a1e55ae86cfd2b786718aae571bfa [2024-01-27 16:12:46,980 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-27 16:12:47,001 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-27 16:12:47,003 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-27 16:12:47,004 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-27 16:12:47,005 INFO L274 PluginConnector]: CDTParser initialized [2024-01-27 16:12:47,006 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix030_tso.i [2024-01-27 16:12:48,201 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-27 16:12:48,437 INFO L384 CDTParser]: Found 1 translation units. [2024-01-27 16:12:48,438 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix030_tso.i [2024-01-27 16:12:48,464 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bee77caec/64e4a2e582204061acb26760248e1742/FLAGa2b53b52b [2024-01-27 16:12:48,476 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bee77caec/64e4a2e582204061acb26760248e1742 [2024-01-27 16:12:48,478 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-27 16:12:48,479 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-01-27 16:12:48,481 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-27 16:12:48,482 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-27 16:12:48,485 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-27 16:12:48,486 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 04:12:48" (1/1) ... [2024-01-27 16:12:48,487 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4210e632 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:12:48, skipping insertion in model container [2024-01-27 16:12:48,487 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 04:12:48" (1/1) ... [2024-01-27 16:12:48,533 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-01-27 16:12:48,678 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/mix030_tso.i[944,957] [2024-01-27 16:12:48,817 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 16:12:48,825 INFO L202 MainTranslator]: Completed pre-run [2024-01-27 16:12:48,833 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/mix030_tso.i[944,957] [2024-01-27 16:12:48,888 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 16:12:48,913 INFO L206 MainTranslator]: Completed translation [2024-01-27 16:12:48,914 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:12:48 WrapperNode [2024-01-27 16:12:48,914 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-27 16:12:48,914 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-27 16:12:48,915 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-27 16:12:48,915 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-27 16:12:48,919 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:12:48" (1/1) ... [2024-01-27 16:12:48,930 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:12:48" (1/1) ... [2024-01-27 16:12:48,949 INFO L138 Inliner]: procedures = 177, calls = 69, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 179 [2024-01-27 16:12:48,949 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-27 16:12:48,949 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-27 16:12:48,950 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-27 16:12:48,950 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-27 16:12:48,958 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:12:48" (1/1) ... [2024-01-27 16:12:48,959 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:12:48" (1/1) ... [2024-01-27 16:12:48,961 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:12:48" (1/1) ... [2024-01-27 16:12:48,978 INFO L175 MemorySlicer]: Split 6 memory accesses to 5 slices as follows [2, 1, 1, 1, 1]. 33 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 4 writes are split as follows [0, 1, 1, 1, 1]. [2024-01-27 16:12:48,987 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:12:48" (1/1) ... [2024-01-27 16:12:48,988 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:12:48" (1/1) ... [2024-01-27 16:12:48,993 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:12:48" (1/1) ... [2024-01-27 16:12:49,001 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:12:48" (1/1) ... [2024-01-27 16:12:49,003 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:12:48" (1/1) ... [2024-01-27 16:12:49,004 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:12:48" (1/1) ... [2024-01-27 16:12:49,008 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-27 16:12:49,011 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-27 16:12:49,012 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-27 16:12:49,012 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-27 16:12:49,013 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:12:48" (1/1) ... [2024-01-27 16:12:49,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 16:12:49,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 16:12:49,054 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-01-27 16:12:49,065 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-01-27 16:12:49,098 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-27 16:12:49,098 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-27 16:12:49,098 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-27 16:12:49,098 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-27 16:12:49,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-01-27 16:12:49,099 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-01-27 16:12:49,100 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-27 16:12:49,100 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-27 16:12:49,100 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-27 16:12:49,100 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-01-27 16:12:49,101 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-01-27 16:12:49,101 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-01-27 16:12:49,101 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-01-27 16:12:49,101 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-01-27 16:12:49,101 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-01-27 16:12:49,101 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-01-27 16:12:49,101 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-01-27 16:12:49,102 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-27 16:12:49,102 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-27 16:12:49,102 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-27 16:12:49,102 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-27 16:12:49,103 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-01-27 16:12:49,103 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-01-27 16:12:49,103 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-27 16:12:49,103 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-27 16:12:49,104 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-27 16:12:49,248 INFO L244 CfgBuilder]: Building ICFG [2024-01-27 16:12:49,250 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-27 16:12:49,511 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-27 16:12:49,511 INFO L293 CfgBuilder]: Performing block encoding [2024-01-27 16:12:49,611 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-27 16:12:49,611 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-01-27 16:12:49,612 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 04:12:49 BoogieIcfgContainer [2024-01-27 16:12:49,612 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-27 16:12:49,613 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-27 16:12:49,613 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-27 16:12:49,616 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-27 16:12:49,616 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 04:12:48" (1/3) ... [2024-01-27 16:12:49,616 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46910ee9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 04:12:49, skipping insertion in model container [2024-01-27 16:12:49,617 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:12:48" (2/3) ... [2024-01-27 16:12:49,617 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46910ee9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 04:12:49, skipping insertion in model container [2024-01-27 16:12:49,617 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 04:12:49" (3/3) ... [2024-01-27 16:12:49,618 INFO L112 eAbstractionObserver]: Analyzing ICFG mix030_tso.i [2024-01-27 16:12:49,624 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2024-01-27 16:12:49,630 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-27 16:12:49,631 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-01-27 16:12:49,631 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-27 16:12:49,665 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-01-27 16:12:49,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 61 places, 49 transitions, 114 flow [2024-01-27 16:12:49,709 INFO L124 PetriNetUnfolderBase]: 1/45 cut-off events. [2024-01-27 16:12:49,709 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-27 16:12:49,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58 conditions, 45 events. 1/45 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 92 event pairs, 0 based on Foata normal form. 0/42 useless extension candidates. Maximal degree in co-relation 49. Up to 2 conditions per place. [2024-01-27 16:12:49,712 INFO L82 GeneralOperation]: Start removeDead. Operand has 61 places, 49 transitions, 114 flow [2024-01-27 16:12:49,714 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 57 places, 45 transitions, 102 flow [2024-01-27 16:12:49,720 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-27 16:12:49,725 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;@593abee5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-27 16:12:49,725 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-01-27 16:12:49,732 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-27 16:12:49,732 INFO L124 PetriNetUnfolderBase]: 0/26 cut-off events. [2024-01-27 16:12:49,732 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-27 16:12:49,732 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:12:49,733 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 16:12:49,733 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P3Err0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-01-27 16:12:49,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:12:49,737 INFO L85 PathProgramCache]: Analyzing trace with hash -1750039474, now seen corresponding path program 1 times [2024-01-27 16:12:49,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:12:49,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2871731] [2024-01-27 16:12:49,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:12:49,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:12:49,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:12:50,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 16:12:50,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:12:50,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2871731] [2024-01-27 16:12:50,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2871731] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:12:50,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:12:50,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-27 16:12:50,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692506332] [2024-01-27 16:12:50,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:12:50,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 16:12:50,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:12:50,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 16:12:50,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 16:12:50,197 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 49 [2024-01-27 16:12:50,199 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 45 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 16:12:50,199 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:12:50,199 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 49 [2024-01-27 16:12:50,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:12:50,482 INFO L124 PetriNetUnfolderBase]: 1027/1743 cut-off events. [2024-01-27 16:12:50,482 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-27 16:12:50,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3271 conditions, 1743 events. 1027/1743 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 12025 event pairs, 179 based on Foata normal form. 60/1749 useless extension candidates. Maximal degree in co-relation 3259. Up to 1185 conditions per place. [2024-01-27 16:12:50,497 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 28 selfloop transitions, 2 changer transitions 2/53 dead transitions. [2024-01-27 16:12:50,497 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 53 transitions, 182 flow [2024-01-27 16:12:50,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 16:12:50,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 16:12:50,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 110 transitions. [2024-01-27 16:12:50,506 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7482993197278912 [2024-01-27 16:12:50,507 INFO L175 Difference]: Start difference. First operand has 57 places, 45 transitions, 102 flow. Second operand 3 states and 110 transitions. [2024-01-27 16:12:50,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 53 transitions, 182 flow [2024-01-27 16:12:50,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 53 transitions, 178 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-01-27 16:12:50,513 INFO L231 Difference]: Finished difference. Result has 54 places, 42 transitions, 96 flow [2024-01-27 16:12:50,514 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=54, PETRI_TRANSITIONS=42} [2024-01-27 16:12:50,517 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, -3 predicate places. [2024-01-27 16:12:50,518 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 42 transitions, 96 flow [2024-01-27 16:12:50,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 16:12:50,518 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:12:50,518 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 16:12:50,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-27 16:12:50,519 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-01-27 16:12:50,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:12:50,520 INFO L85 PathProgramCache]: Analyzing trace with hash 1058069105, now seen corresponding path program 1 times [2024-01-27 16:12:50,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:12:50,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819977292] [2024-01-27 16:12:50,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:12:50,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:12:50,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:12:51,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 16:12:51,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:12:51,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819977292] [2024-01-27 16:12:51,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819977292] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:12:51,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:12:51,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 16:12:51,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174266100] [2024-01-27 16:12:51,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:12:51,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-27 16:12:51,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:12:51,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-27 16:12:51,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-01-27 16:12:51,354 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 49 [2024-01-27 16:12:51,355 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 42 transitions, 96 flow. Second operand has 6 states, 6 states have (on average 20.333333333333332) internal successors, (122), 6 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 16:12:51,355 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:12:51,355 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 49 [2024-01-27 16:12:51,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:12:53,821 INFO L124 PetriNetUnfolderBase]: 15429/23322 cut-off events. [2024-01-27 16:12:53,821 INFO L125 PetriNetUnfolderBase]: For 872/872 co-relation queries the response was YES. [2024-01-27 16:12:53,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45490 conditions, 23322 events. 15429/23322 cut-off events. For 872/872 co-relation queries the response was YES. Maximal size of possible extension queue 1258. Compared 177309 event pairs, 731 based on Foata normal form. 0/22774 useless extension candidates. Maximal degree in co-relation 45480. Up to 8503 conditions per place. [2024-01-27 16:12:53,983 INFO L140 encePairwiseOnDemand]: 34/49 looper letters, 55 selfloop transitions, 13 changer transitions 107/189 dead transitions. [2024-01-27 16:12:53,984 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 189 transitions, 770 flow [2024-01-27 16:12:53,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-01-27 16:12:53,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-01-27 16:12:53,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 394 transitions. [2024-01-27 16:12:53,987 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6700680272108843 [2024-01-27 16:12:53,987 INFO L175 Difference]: Start difference. First operand has 54 places, 42 transitions, 96 flow. Second operand 12 states and 394 transitions. [2024-01-27 16:12:53,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 189 transitions, 770 flow [2024-01-27 16:12:53,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 189 transitions, 746 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-27 16:12:53,992 INFO L231 Difference]: Finished difference. Result has 73 places, 53 transitions, 244 flow [2024-01-27 16:12:53,992 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=244, PETRI_PLACES=73, PETRI_TRANSITIONS=53} [2024-01-27 16:12:53,993 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 16 predicate places. [2024-01-27 16:12:53,993 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 53 transitions, 244 flow [2024-01-27 16:12:53,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.333333333333332) internal successors, (122), 6 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 16:12:53,993 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:12:53,994 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 16:12:53,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-27 16:12:53,994 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-01-27 16:12:53,995 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:12:53,995 INFO L85 PathProgramCache]: Analyzing trace with hash 192145714, now seen corresponding path program 1 times [2024-01-27 16:12:53,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:12:53,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135581927] [2024-01-27 16:12:53,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:12:53,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:12:54,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:12:54,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 16:12:54,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:12:54,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135581927] [2024-01-27 16:12:54,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135581927] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:12:54,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:12:54,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-27 16:12:54,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953604929] [2024-01-27 16:12:54,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:12:54,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 16:12:54,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:12:54,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 16:12:54,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-27 16:12:54,140 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 49 [2024-01-27 16:12:54,140 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 53 transitions, 244 flow. Second operand has 5 states, 5 states have (on average 23.8) internal successors, (119), 5 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 16:12:54,140 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:12:54,140 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 49 [2024-01-27 16:12:54,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:12:55,744 INFO L124 PetriNetUnfolderBase]: 9577/16125 cut-off events. [2024-01-27 16:12:55,744 INFO L125 PetriNetUnfolderBase]: For 34155/34823 co-relation queries the response was YES. [2024-01-27 16:12:55,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52284 conditions, 16125 events. 9577/16125 cut-off events. For 34155/34823 co-relation queries the response was YES. Maximal size of possible extension queue 978. Compared 134537 event pairs, 2157 based on Foata normal form. 580/16034 useless extension candidates. Maximal degree in co-relation 52263. Up to 9596 conditions per place. [2024-01-27 16:12:55,846 INFO L140 encePairwiseOnDemand]: 43/49 looper letters, 70 selfloop transitions, 10 changer transitions 30/132 dead transitions. [2024-01-27 16:12:55,847 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 132 transitions, 972 flow [2024-01-27 16:12:55,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-27 16:12:55,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-27 16:12:55,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 224 transitions. [2024-01-27 16:12:55,850 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6530612244897959 [2024-01-27 16:12:55,850 INFO L175 Difference]: Start difference. First operand has 73 places, 53 transitions, 244 flow. Second operand 7 states and 224 transitions. [2024-01-27 16:12:55,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 132 transitions, 972 flow [2024-01-27 16:12:56,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 132 transitions, 896 flow, removed 38 selfloop flow, removed 4 redundant places. [2024-01-27 16:12:56,042 INFO L231 Difference]: Finished difference. Result has 70 places, 62 transitions, 349 flow [2024-01-27 16:12:56,042 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=349, PETRI_PLACES=70, PETRI_TRANSITIONS=62} [2024-01-27 16:12:56,044 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 13 predicate places. [2024-01-27 16:12:56,044 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 62 transitions, 349 flow [2024-01-27 16:12:56,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.8) internal successors, (119), 5 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 16:12:56,044 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:12:56,044 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 16:12:56,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-27 16:12:56,045 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-01-27 16:12:56,046 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:12:56,046 INFO L85 PathProgramCache]: Analyzing trace with hash -541161094, now seen corresponding path program 1 times [2024-01-27 16:12:56,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:12:56,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186595547] [2024-01-27 16:12:56,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:12:56,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:12:56,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:12:56,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 16:12:56,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:12:56,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186595547] [2024-01-27 16:12:56,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186595547] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:12:56,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:12:56,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 16:12:56,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469426387] [2024-01-27 16:12:56,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:12:56,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-27 16:12:56,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:12:56,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-27 16:12:56,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-01-27 16:12:56,731 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 49 [2024-01-27 16:12:56,732 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 62 transitions, 349 flow. Second operand has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 16:12:56,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:12:56,732 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 49 [2024-01-27 16:12:56,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:12:58,924 INFO L124 PetriNetUnfolderBase]: 12882/20988 cut-off events. [2024-01-27 16:12:58,924 INFO L125 PetriNetUnfolderBase]: For 47123/47123 co-relation queries the response was YES. [2024-01-27 16:12:58,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70864 conditions, 20988 events. 12882/20988 cut-off events. For 47123/47123 co-relation queries the response was YES. Maximal size of possible extension queue 1191. Compared 173947 event pairs, 1922 based on Foata normal form. 402/21293 useless extension candidates. Maximal degree in co-relation 70841. Up to 6492 conditions per place. [2024-01-27 16:12:59,033 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 60 selfloop transitions, 14 changer transitions 96/184 dead transitions. [2024-01-27 16:12:59,033 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 184 transitions, 1497 flow [2024-01-27 16:12:59,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-27 16:12:59,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-27 16:12:59,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 303 transitions. [2024-01-27 16:12:59,035 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6183673469387755 [2024-01-27 16:12:59,035 INFO L175 Difference]: Start difference. First operand has 70 places, 62 transitions, 349 flow. Second operand 10 states and 303 transitions. [2024-01-27 16:12:59,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 184 transitions, 1497 flow [2024-01-27 16:12:59,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 184 transitions, 1479 flow, removed 9 selfloop flow, removed 0 redundant places. [2024-01-27 16:12:59,103 INFO L231 Difference]: Finished difference. Result has 88 places, 66 transitions, 469 flow [2024-01-27 16:12:59,103 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=343, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=469, PETRI_PLACES=88, PETRI_TRANSITIONS=66} [2024-01-27 16:12:59,104 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 31 predicate places. [2024-01-27 16:12:59,104 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 66 transitions, 469 flow [2024-01-27 16:12:59,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 16:12:59,104 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:12:59,105 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] [2024-01-27 16:12:59,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-27 16:12:59,105 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-01-27 16:12:59,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:12:59,105 INFO L85 PathProgramCache]: Analyzing trace with hash 1451946821, now seen corresponding path program 1 times [2024-01-27 16:12:59,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:12:59,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436306862] [2024-01-27 16:12:59,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:12:59,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:12:59,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:12:59,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 16:12:59,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:12:59,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436306862] [2024-01-27 16:12:59,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436306862] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:12:59,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:12:59,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 16:12:59,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187636261] [2024-01-27 16:12:59,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:12:59,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 16:12:59,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:12:59,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 16:12:59,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-27 16:12:59,262 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 49 [2024-01-27 16:12:59,263 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 66 transitions, 469 flow. Second operand has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 16:12:59,263 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:12:59,263 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 49 [2024-01-27 16:12:59,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:13:00,933 INFO L124 PetriNetUnfolderBase]: 9307/15871 cut-off events. [2024-01-27 16:13:00,933 INFO L125 PetriNetUnfolderBase]: For 67325/67848 co-relation queries the response was YES. [2024-01-27 16:13:00,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59463 conditions, 15871 events. 9307/15871 cut-off events. For 67325/67848 co-relation queries the response was YES. Maximal size of possible extension queue 888. Compared 136448 event pairs, 3200 based on Foata normal form. 387/15555 useless extension candidates. Maximal degree in co-relation 59429. Up to 5931 conditions per place. [2024-01-27 16:13:01,188 INFO L140 encePairwiseOnDemand]: 44/49 looper letters, 55 selfloop transitions, 8 changer transitions 41/129 dead transitions. [2024-01-27 16:13:01,188 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 129 transitions, 1103 flow [2024-01-27 16:13:01,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-27 16:13:01,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-27 16:13:01,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 220 transitions. [2024-01-27 16:13:01,189 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.641399416909621 [2024-01-27 16:13:01,190 INFO L175 Difference]: Start difference. First operand has 88 places, 66 transitions, 469 flow. Second operand 7 states and 220 transitions. [2024-01-27 16:13:01,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 129 transitions, 1103 flow [2024-01-27 16:13:01,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 129 transitions, 1028 flow, removed 35 selfloop flow, removed 6 redundant places. [2024-01-27 16:13:01,389 INFO L231 Difference]: Finished difference. Result has 83 places, 65 transitions, 450 flow [2024-01-27 16:13:01,389 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=432, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=450, PETRI_PLACES=83, PETRI_TRANSITIONS=65} [2024-01-27 16:13:01,392 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 26 predicate places. [2024-01-27 16:13:01,392 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 65 transitions, 450 flow [2024-01-27 16:13:01,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 16:13:01,397 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:13:01,398 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 16:13:01,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-27 16:13:01,398 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-01-27 16:13:01,399 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:13:01,399 INFO L85 PathProgramCache]: Analyzing trace with hash -1822754676, now seen corresponding path program 1 times [2024-01-27 16:13:01,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:13:01,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152798575] [2024-01-27 16:13:01,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:13:01,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:13:01,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:13:01,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 16:13:01,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:13:01,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152798575] [2024-01-27 16:13:01,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152798575] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:13:01,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:13:01,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-27 16:13:01,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533983629] [2024-01-27 16:13:01,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:13:01,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 16:13:01,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:13:01,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 16:13:01,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-27 16:13:01,558 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 49 [2024-01-27 16:13:01,558 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 65 transitions, 450 flow. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 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 16:13:01,559 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:13:01,559 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 49 [2024-01-27 16:13:01,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:13:05,302 INFO L124 PetriNetUnfolderBase]: 27491/40807 cut-off events. [2024-01-27 16:13:05,303 INFO L125 PetriNetUnfolderBase]: For 92473/99186 co-relation queries the response was YES. [2024-01-27 16:13:05,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128354 conditions, 40807 events. 27491/40807 cut-off events. For 92473/99186 co-relation queries the response was YES. Maximal size of possible extension queue 2080. Compared 311857 event pairs, 4860 based on Foata normal form. 2306/41138 useless extension candidates. Maximal degree in co-relation 128320. Up to 21492 conditions per place. [2024-01-27 16:13:05,676 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 65 selfloop transitions, 6 changer transitions 0/103 dead transitions. [2024-01-27 16:13:05,676 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 103 transitions, 802 flow [2024-01-27 16:13:05,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-27 16:13:05,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-27 16:13:05,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 136 transitions. [2024-01-27 16:13:05,678 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6938775510204082 [2024-01-27 16:13:05,678 INFO L175 Difference]: Start difference. First operand has 83 places, 65 transitions, 450 flow. Second operand 4 states and 136 transitions. [2024-01-27 16:13:05,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 103 transitions, 802 flow [2024-01-27 16:13:06,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 103 transitions, 762 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-01-27 16:13:06,124 INFO L231 Difference]: Finished difference. Result has 75 places, 70 transitions, 464 flow [2024-01-27 16:13:06,124 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=418, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=464, PETRI_PLACES=75, PETRI_TRANSITIONS=70} [2024-01-27 16:13:06,125 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 18 predicate places. [2024-01-27 16:13:06,125 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 70 transitions, 464 flow [2024-01-27 16:13:06,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 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 16:13:06,125 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:13:06,126 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] [2024-01-27 16:13:06,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-27 16:13:06,126 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-01-27 16:13:06,126 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:13:06,127 INFO L85 PathProgramCache]: Analyzing trace with hash -132643619, now seen corresponding path program 1 times [2024-01-27 16:13:06,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:13:06,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453635654] [2024-01-27 16:13:06,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:13:06,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:13:06,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:13:06,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 16:13:06,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:13:06,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453635654] [2024-01-27 16:13:06,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453635654] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:13:06,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:13:06,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-27 16:13:06,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630464357] [2024-01-27 16:13:06,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:13:06,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-27 16:13:06,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:13:06,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-27 16:13:06,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-01-27 16:13:06,824 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 49 [2024-01-27 16:13:06,825 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 70 transitions, 464 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 16:13:06,825 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:13:06,825 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 49 [2024-01-27 16:13:06,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:13:11,478 INFO L124 PetriNetUnfolderBase]: 30125/47945 cut-off events. [2024-01-27 16:13:11,479 INFO L125 PetriNetUnfolderBase]: For 95313/97269 co-relation queries the response was YES. [2024-01-27 16:13:11,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 158854 conditions, 47945 events. 30125/47945 cut-off events. For 95313/97269 co-relation queries the response was YES. Maximal size of possible extension queue 2522. Compared 420795 event pairs, 9938 based on Foata normal form. 682/44569 useless extension candidates. Maximal degree in co-relation 158825. Up to 18875 conditions per place. [2024-01-27 16:13:12,086 INFO L140 encePairwiseOnDemand]: 35/49 looper letters, 110 selfloop transitions, 39 changer transitions 10/178 dead transitions. [2024-01-27 16:13:12,087 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 178 transitions, 1466 flow [2024-01-27 16:13:12,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-27 16:13:12,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-27 16:13:12,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 306 transitions. [2024-01-27 16:13:12,089 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6244897959183674 [2024-01-27 16:13:12,089 INFO L175 Difference]: Start difference. First operand has 75 places, 70 transitions, 464 flow. Second operand 10 states and 306 transitions. [2024-01-27 16:13:12,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 178 transitions, 1466 flow [2024-01-27 16:13:12,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 178 transitions, 1449 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-01-27 16:13:12,175 INFO L231 Difference]: Finished difference. Result has 91 places, 100 transitions, 942 flow [2024-01-27 16:13:12,175 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=453, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=942, PETRI_PLACES=91, PETRI_TRANSITIONS=100} [2024-01-27 16:13:12,175 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 34 predicate places. [2024-01-27 16:13:12,175 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 100 transitions, 942 flow [2024-01-27 16:13:12,176 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 16:13:12,176 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:13:12,176 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] [2024-01-27 16:13:12,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-01-27 16:13:12,176 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-01-27 16:13:12,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:13:12,177 INFO L85 PathProgramCache]: Analyzing trace with hash 1009084213, now seen corresponding path program 1 times [2024-01-27 16:13:12,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:13:12,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964957228] [2024-01-27 16:13:12,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:13:12,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:13:12,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:13:12,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 16:13:12,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:13:12,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964957228] [2024-01-27 16:13:12,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964957228] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:13:12,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:13:12,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-27 16:13:12,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408809814] [2024-01-27 16:13:12,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:13:12,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 16:13:12,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:13:12,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 16:13:12,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-01-27 16:13:12,323 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 49 [2024-01-27 16:13:12,324 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 100 transitions, 942 flow. Second operand has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 16:13:12,324 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:13:12,324 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 49 [2024-01-27 16:13:12,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:13:17,609 INFO L124 PetriNetUnfolderBase]: 35871/53067 cut-off events. [2024-01-27 16:13:17,610 INFO L125 PetriNetUnfolderBase]: For 147740/161087 co-relation queries the response was YES. [2024-01-27 16:13:17,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 185445 conditions, 53067 events. 35871/53067 cut-off events. For 147740/161087 co-relation queries the response was YES. Maximal size of possible extension queue 2700. Compared 413441 event pairs, 3760 based on Foata normal form. 3593/54894 useless extension candidates. Maximal degree in co-relation 185407. Up to 21834 conditions per place. [2024-01-27 16:13:18,052 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 101 selfloop transitions, 10 changer transitions 16/168 dead transitions. [2024-01-27 16:13:18,053 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 168 transitions, 1687 flow [2024-01-27 16:13:18,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-27 16:13:18,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-27 16:13:18,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 174 transitions. [2024-01-27 16:13:18,054 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.710204081632653 [2024-01-27 16:13:18,055 INFO L175 Difference]: Start difference. First operand has 91 places, 100 transitions, 942 flow. Second operand 5 states and 174 transitions. [2024-01-27 16:13:18,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 168 transitions, 1687 flow [2024-01-27 16:13:18,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 168 transitions, 1663 flow, removed 12 selfloop flow, removed 0 redundant places. [2024-01-27 16:13:18,513 INFO L231 Difference]: Finished difference. Result has 97 places, 91 transitions, 821 flow [2024-01-27 16:13:18,513 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=918, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=821, PETRI_PLACES=97, PETRI_TRANSITIONS=91} [2024-01-27 16:13:18,514 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 40 predicate places. [2024-01-27 16:13:18,514 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 91 transitions, 821 flow [2024-01-27 16:13:18,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 16:13:18,514 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:13:18,514 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, 1] [2024-01-27 16:13:18,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-01-27 16:13:18,515 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-01-27 16:13:18,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:13:18,515 INFO L85 PathProgramCache]: Analyzing trace with hash -159906600, now seen corresponding path program 1 times [2024-01-27 16:13:18,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:13:18,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577720000] [2024-01-27 16:13:18,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:13:18,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:13:18,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:13:18,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 16:13:18,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:13:18,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577720000] [2024-01-27 16:13:18,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577720000] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:13:18,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:13:18,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 16:13:18,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746965226] [2024-01-27 16:13:18,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:13:18,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-27 16:13:18,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:13:18,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-27 16:13:18,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-01-27 16:13:18,685 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 49 [2024-01-27 16:13:18,685 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 91 transitions, 821 flow. Second operand has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 16:13:18,685 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:13:18,685 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 49 [2024-01-27 16:13:18,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:13:23,018 INFO L124 PetriNetUnfolderBase]: 28267/41751 cut-off events. [2024-01-27 16:13:23,018 INFO L125 PetriNetUnfolderBase]: For 138754/155166 co-relation queries the response was YES. [2024-01-27 16:13:23,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 160126 conditions, 41751 events. 28267/41751 cut-off events. For 138754/155166 co-relation queries the response was YES. Maximal size of possible extension queue 2207. Compared 316630 event pairs, 1822 based on Foata normal form. 2935/43181 useless extension candidates. Maximal degree in co-relation 160084. Up to 13830 conditions per place. [2024-01-27 16:13:23,340 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 103 selfloop transitions, 14 changer transitions 15/172 dead transitions. [2024-01-27 16:13:23,340 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 172 transitions, 1686 flow [2024-01-27 16:13:23,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-27 16:13:23,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-27 16:13:23,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 210 transitions. [2024-01-27 16:13:23,341 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7142857142857143 [2024-01-27 16:13:23,341 INFO L175 Difference]: Start difference. First operand has 97 places, 91 transitions, 821 flow. Second operand 6 states and 210 transitions. [2024-01-27 16:13:23,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 172 transitions, 1686 flow [2024-01-27 16:13:23,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 172 transitions, 1648 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-01-27 16:13:23,400 INFO L231 Difference]: Finished difference. Result has 89 places, 93 transitions, 829 flow [2024-01-27 16:13:23,400 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=772, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=829, PETRI_PLACES=89, PETRI_TRANSITIONS=93} [2024-01-27 16:13:23,400 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 32 predicate places. [2024-01-27 16:13:23,400 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 93 transitions, 829 flow [2024-01-27 16:13:23,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 16:13:23,401 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:13:23,401 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, 1, 1, 1, 1] [2024-01-27 16:13:23,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-01-27 16:13:23,401 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-01-27 16:13:23,402 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:13:23,402 INFO L85 PathProgramCache]: Analyzing trace with hash -1250074583, now seen corresponding path program 1 times [2024-01-27 16:13:23,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:13:23,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7004277] [2024-01-27 16:13:23,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:13:23,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:13:23,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:13:23,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 16:13:23,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:13:23,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7004277] [2024-01-27 16:13:23,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7004277] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:13:23,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:13:23,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-27 16:13:23,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575438342] [2024-01-27 16:13:23,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:13:23,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-27 16:13:23,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:13:23,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-27 16:13:23,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-01-27 16:13:23,576 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 49 [2024-01-27 16:13:23,576 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 93 transitions, 829 flow. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 7 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 16:13:23,576 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:13:23,576 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 49 [2024-01-27 16:13:23,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:13:27,164 INFO L124 PetriNetUnfolderBase]: 25017/37050 cut-off events. [2024-01-27 16:13:27,164 INFO L125 PetriNetUnfolderBase]: For 163283/179296 co-relation queries the response was YES. [2024-01-27 16:13:27,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152826 conditions, 37050 events. 25017/37050 cut-off events. For 163283/179296 co-relation queries the response was YES. Maximal size of possible extension queue 2200. Compared 282512 event pairs, 1596 based on Foata normal form. 2086/37715 useless extension candidates. Maximal degree in co-relation 152789. Up to 13666 conditions per place. [2024-01-27 16:13:27,454 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 92 selfloop transitions, 18 changer transitions 22/162 dead transitions. [2024-01-27 16:13:27,454 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 162 transitions, 1544 flow [2024-01-27 16:13:27,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-27 16:13:27,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-27 16:13:27,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 228 transitions. [2024-01-27 16:13:27,456 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6647230320699709 [2024-01-27 16:13:27,456 INFO L175 Difference]: Start difference. First operand has 89 places, 93 transitions, 829 flow. Second operand 7 states and 228 transitions. [2024-01-27 16:13:27,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 162 transitions, 1544 flow [2024-01-27 16:13:28,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 162 transitions, 1474 flow, removed 21 selfloop flow, removed 6 redundant places. [2024-01-27 16:13:28,254 INFO L231 Difference]: Finished difference. Result has 91 places, 81 transitions, 676 flow [2024-01-27 16:13:28,254 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=768, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=676, PETRI_PLACES=91, PETRI_TRANSITIONS=81} [2024-01-27 16:13:28,255 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 34 predicate places. [2024-01-27 16:13:28,255 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 81 transitions, 676 flow [2024-01-27 16:13:28,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 7 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 16:13:28,255 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:13:28,256 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 16:13:28,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-01-27 16:13:28,256 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-01-27 16:13:28,256 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:13:28,256 INFO L85 PathProgramCache]: Analyzing trace with hash 304673707, now seen corresponding path program 1 times [2024-01-27 16:13:28,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:13:28,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810777360] [2024-01-27 16:13:28,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:13:28,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:13:28,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:13:28,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 16:13:28,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:13:28,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810777360] [2024-01-27 16:13:28,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810777360] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:13:28,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:13:28,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-27 16:13:28,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678829261] [2024-01-27 16:13:28,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:13:28,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-27 16:13:28,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:13:28,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-27 16:13:28,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-01-27 16:13:28,768 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 49 [2024-01-27 16:13:28,768 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 81 transitions, 676 flow. Second operand has 7 states, 7 states have (on average 20.428571428571427) internal successors, (143), 7 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 16:13:28,769 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:13:28,769 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 49 [2024-01-27 16:13:28,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:13:30,677 INFO L124 PetriNetUnfolderBase]: 11000/19415 cut-off events. [2024-01-27 16:13:30,677 INFO L125 PetriNetUnfolderBase]: For 71026/75909 co-relation queries the response was YES. [2024-01-27 16:13:30,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71673 conditions, 19415 events. 11000/19415 cut-off events. For 71026/75909 co-relation queries the response was YES. Maximal size of possible extension queue 1515. Compared 174882 event pairs, 1819 based on Foata normal form. 281/17740 useless extension candidates. Maximal degree in co-relation 71637. Up to 5603 conditions per place. [2024-01-27 16:13:30,776 INFO L140 encePairwiseOnDemand]: 35/49 looper letters, 32 selfloop transitions, 10 changer transitions 87/158 dead transitions. [2024-01-27 16:13:30,776 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 158 transitions, 1467 flow [2024-01-27 16:13:30,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-27 16:13:30,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-27 16:13:30,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 236 transitions. [2024-01-27 16:13:30,777 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6020408163265306 [2024-01-27 16:13:30,777 INFO L175 Difference]: Start difference. First operand has 91 places, 81 transitions, 676 flow. Second operand 8 states and 236 transitions. [2024-01-27 16:13:30,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 158 transitions, 1467 flow [2024-01-27 16:13:31,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 158 transitions, 1262 flow, removed 50 selfloop flow, removed 9 redundant places. [2024-01-27 16:13:31,196 INFO L231 Difference]: Finished difference. Result has 93 places, 63 transitions, 418 flow [2024-01-27 16:13:31,196 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=555, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=418, PETRI_PLACES=93, PETRI_TRANSITIONS=63} [2024-01-27 16:13:31,196 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 36 predicate places. [2024-01-27 16:13:31,197 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 63 transitions, 418 flow [2024-01-27 16:13:31,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.428571428571427) internal successors, (143), 7 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 16:13:31,197 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:13:31,197 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 16:13:31,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-01-27 16:13:31,197 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-01-27 16:13:31,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:13:31,198 INFO L85 PathProgramCache]: Analyzing trace with hash -1458264399, now seen corresponding path program 2 times [2024-01-27 16:13:31,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:13:31,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629651369] [2024-01-27 16:13:31,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:13:31,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:13:31,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:13:32,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 16:13:32,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:13:32,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629651369] [2024-01-27 16:13:32,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629651369] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:13:32,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:13:32,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-27 16:13:32,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648023186] [2024-01-27 16:13:32,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:13:32,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-27 16:13:32,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:13:32,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-27 16:13:32,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-01-27 16:13:32,206 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 49 [2024-01-27 16:13:32,207 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 63 transitions, 418 flow. Second operand has 9 states, 9 states have (on average 24.11111111111111) internal successors, (217), 9 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 16:13:32,207 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:13:32,207 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 49 [2024-01-27 16:13:32,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand