./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/popl20-commit-2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/weaver/popl20-commit-2.wvr.c -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 ec2334e7e9ec2636c6abf161aed91fff94fbff3709d38c7edad92256c3b5dc81 --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 16:48:44,507 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 16:48:44,572 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 16:48:44,577 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 16:48:44,577 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 16:48:44,597 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 16:48:44,598 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 16:48:44,598 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 16:48:44,598 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 16:48:44,599 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 16:48:44,599 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 16:48:44,599 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 16:48:44,599 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 16:48:44,600 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 16:48:44,600 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 16:48:44,600 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 16:48:44,600 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 16:48:44,613 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 16:48:44,613 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 16:48:44,613 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 16:48:44,613 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 16:48:44,614 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 16:48:44,614 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 16:48:44,614 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 16:48:44,614 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 16:48:44,615 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 16:48:44,615 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 16:48:44,615 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 16:48:44,615 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 16:48:44,616 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 16:48:44,616 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 16:48:44,617 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 16:48:44,617 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 16:48:44,617 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 16:48:44,617 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 16:48:44,617 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 16:48:44,618 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 16:48:44,618 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 16:48:44,618 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 16:48:44,618 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 16:48:44,618 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 16:48:44,619 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 16:48:44,619 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 16:48:44,619 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ec2334e7e9ec2636c6abf161aed91fff94fbff3709d38c7edad92256c3b5dc81 [2024-06-27 16:48:44,824 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 16:48:44,850 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 16:48:44,852 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 16:48:44,853 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 16:48:44,853 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 16:48:44,854 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-commit-2.wvr.c [2024-06-27 16:48:45,973 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 16:48:46,127 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 16:48:46,128 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-commit-2.wvr.c [2024-06-27 16:48:46,135 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd795b329/b0b1cfd96a564e32a639547638882546/FLAG4564a1047 [2024-06-27 16:48:46,144 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd795b329/b0b1cfd96a564e32a639547638882546 [2024-06-27 16:48:46,147 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 16:48:46,148 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-06-27 16:48:46,148 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 16:48:46,149 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 16:48:46,152 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 16:48:46,153 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 04:48:46" (1/1) ... [2024-06-27 16:48:46,154 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55403394 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:48:46, skipping insertion in model container [2024-06-27 16:48:46,154 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 04:48:46" (1/1) ... [2024-06-27 16:48:46,173 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 16:48:46,344 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-commit-2.wvr.c[5898,5911] [2024-06-27 16:48:46,351 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 16:48:46,360 INFO L202 MainTranslator]: Completed pre-run [2024-06-27 16:48:46,381 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-commit-2.wvr.c[5898,5911] [2024-06-27 16:48:46,384 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 16:48:46,396 INFO L206 MainTranslator]: Completed translation [2024-06-27 16:48:46,397 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:48:46 WrapperNode [2024-06-27 16:48:46,397 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 16:48:46,398 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 16:48:46,398 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 16:48:46,398 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 16:48:46,403 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:48:46" (1/1) ... [2024-06-27 16:48:46,410 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:48:46" (1/1) ... [2024-06-27 16:48:46,439 INFO L138 Inliner]: procedures = 25, calls = 73, calls flagged for inlining = 27, calls inlined = 33, statements flattened = 461 [2024-06-27 16:48:46,439 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 16:48:46,440 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 16:48:46,440 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 16:48:46,440 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 16:48:46,448 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:48:46" (1/1) ... [2024-06-27 16:48:46,448 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:48:46" (1/1) ... [2024-06-27 16:48:46,452 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:48:46" (1/1) ... [2024-06-27 16:48:46,466 INFO L175 MemorySlicer]: Split 18 memory accesses to 2 slices as follows [2, 16]. 89 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 4 writes are split as follows [0, 4]. [2024-06-27 16:48:46,466 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:48:46" (1/1) ... [2024-06-27 16:48:46,466 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:48:46" (1/1) ... [2024-06-27 16:48:46,474 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:48:46" (1/1) ... [2024-06-27 16:48:46,478 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:48:46" (1/1) ... [2024-06-27 16:48:46,489 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:48:46" (1/1) ... [2024-06-27 16:48:46,491 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:48:46" (1/1) ... [2024-06-27 16:48:46,494 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 16:48:46,495 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 16:48:46,495 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 16:48:46,495 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 16:48:46,496 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:48:46" (1/1) ... [2024-06-27 16:48:46,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 16:48:46,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 16:48:46,520 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-27 16:48:46,536 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-27 16:48:46,553 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 16:48:46,553 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-06-27 16:48:46,553 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-06-27 16:48:46,554 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-06-27 16:48:46,554 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-06-27 16:48:46,554 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-06-27 16:48:46,554 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-06-27 16:48:46,554 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-06-27 16:48:46,554 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-06-27 16:48:46,554 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 16:48:46,555 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-27 16:48:46,555 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-06-27 16:48:46,555 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-06-27 16:48:46,555 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 16:48:46,555 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 16:48:46,555 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-06-27 16:48:46,555 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 16:48:46,556 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 16:48:46,556 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-06-27 16:48:46,556 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-06-27 16:48:46,557 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-27 16:48:46,649 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 16:48:46,651 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 16:48:47,115 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 16:48:47,115 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 16:48:47,466 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 16:48:47,466 INFO L320 CfgBuilder]: Removed 8 assume(true) statements. [2024-06-27 16:48:47,467 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 04:48:47 BoogieIcfgContainer [2024-06-27 16:48:47,467 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 16:48:47,469 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 16:48:47,470 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 16:48:47,472 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 16:48:47,472 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 04:48:46" (1/3) ... [2024-06-27 16:48:47,473 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9d953a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 04:48:47, skipping insertion in model container [2024-06-27 16:48:47,473 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:48:46" (2/3) ... [2024-06-27 16:48:47,474 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9d953a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 04:48:47, skipping insertion in model container [2024-06-27 16:48:47,474 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 04:48:47" (3/3) ... [2024-06-27 16:48:47,475 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-commit-2.wvr.c [2024-06-27 16:48:47,481 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2024-06-27 16:48:47,488 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 16:48:47,488 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-06-27 16:48:47,488 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 16:48:47,559 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-06-27 16:48:47,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 65 places, 64 transitions, 156 flow [2024-06-27 16:48:47,637 INFO L124 PetriNetUnfolderBase]: 12/60 cut-off events. [2024-06-27 16:48:47,638 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-06-27 16:48:47,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 60 events. 12/60 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 123 event pairs, 0 based on Foata normal form. 0/47 useless extension candidates. Maximal degree in co-relation 49. Up to 2 conditions per place. [2024-06-27 16:48:47,641 INFO L82 GeneralOperation]: Start removeDead. Operand has 65 places, 64 transitions, 156 flow [2024-06-27 16:48:47,644 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 60 places, 59 transitions, 142 flow [2024-06-27 16:48:47,655 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 16:48:47,664 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;@746c347d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 16:48:47,664 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-06-27 16:48:47,683 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 16:48:47,684 INFO L124 PetriNetUnfolderBase]: 12/58 cut-off events. [2024-06-27 16:48:47,684 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-06-27 16:48:47,684 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:48:47,685 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] [2024-06-27 16:48:47,685 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-06-27 16:48:47,690 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:48:47,690 INFO L85 PathProgramCache]: Analyzing trace with hash -121138390, now seen corresponding path program 1 times [2024-06-27 16:48:47,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:48:47,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627285121] [2024-06-27 16:48:47,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:48:47,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:48:47,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:48:47,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:48:47,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:48:47,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627285121] [2024-06-27 16:48:47,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627285121] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:48:47,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:48:47,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 16:48:47,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105086886] [2024-06-27 16:48:47,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:48:47,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-06-27 16:48:47,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:48:47,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-06-27 16:48:47,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-06-27 16:48:47,965 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 64 [2024-06-27 16:48:47,968 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 59 transitions, 142 flow. Second operand has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 16:48:47,969 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:48:47,969 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 64 [2024-06-27 16:48:47,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:48:50,873 INFO L124 PetriNetUnfolderBase]: 30762/39969 cut-off events. [2024-06-27 16:48:50,874 INFO L125 PetriNetUnfolderBase]: For 1627/1627 co-relation queries the response was YES. [2024-06-27 16:48:51,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81520 conditions, 39969 events. 30762/39969 cut-off events. For 1627/1627 co-relation queries the response was YES. Maximal size of possible extension queue 1319. Compared 206180 event pairs, 26232 based on Foata normal form. 0/35446 useless extension candidates. Maximal degree in co-relation 78021. Up to 39890 conditions per place. [2024-06-27 16:48:51,163 INFO L140 encePairwiseOnDemand]: 60/64 looper letters, 50 selfloop transitions, 0 changer transitions 0/55 dead transitions. [2024-06-27 16:48:51,163 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 55 transitions, 234 flow [2024-06-27 16:48:51,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-06-27 16:48:51,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-06-27 16:48:51,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 72 transitions. [2024-06-27 16:48:51,173 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5625 [2024-06-27 16:48:51,174 INFO L175 Difference]: Start difference. First operand has 60 places, 59 transitions, 142 flow. Second operand 2 states and 72 transitions. [2024-06-27 16:48:51,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 55 transitions, 234 flow [2024-06-27 16:48:51,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 55 transitions, 218 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-27 16:48:51,211 INFO L231 Difference]: Finished difference. Result has 53 places, 55 transitions, 118 flow [2024-06-27 16:48:51,212 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=118, PETRI_PLACES=53, PETRI_TRANSITIONS=55} [2024-06-27 16:48:51,216 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, -7 predicate places. [2024-06-27 16:48:51,216 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 55 transitions, 118 flow [2024-06-27 16:48:51,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 16:48:51,217 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:48:51,217 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] [2024-06-27 16:48:51,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 16:48:51,218 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-06-27 16:48:51,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:48:51,219 INFO L85 PathProgramCache]: Analyzing trace with hash -1356471636, now seen corresponding path program 1 times [2024-06-27 16:48:51,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:48:51,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051696300] [2024-06-27 16:48:51,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:48:51,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:48:51,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:48:51,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:48:51,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:48:51,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051696300] [2024-06-27 16:48:51,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051696300] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:48:51,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:48:51,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 16:48:51,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565314587] [2024-06-27 16:48:51,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:48:51,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 16:48:51,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:48:51,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 16:48:51,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 16:48:51,473 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 64 [2024-06-27 16:48:51,474 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 55 transitions, 118 flow. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 16:48:51,474 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:48:51,474 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 64 [2024-06-27 16:48:51,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:48:54,284 INFO L124 PetriNetUnfolderBase]: 37721/48970 cut-off events. [2024-06-27 16:48:54,284 INFO L125 PetriNetUnfolderBase]: For 526/526 co-relation queries the response was YES. [2024-06-27 16:48:54,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98669 conditions, 48970 events. 37721/48970 cut-off events. For 526/526 co-relation queries the response was YES. Maximal size of possible extension queue 1687. Compared 270639 event pairs, 8399 based on Foata normal form. 1/42996 useless extension candidates. Maximal degree in co-relation 98666. Up to 41703 conditions per place. [2024-06-27 16:48:54,459 INFO L140 encePairwiseOnDemand]: 58/64 looper letters, 76 selfloop transitions, 5 changer transitions 1/87 dead transitions. [2024-06-27 16:48:54,459 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 87 transitions, 353 flow [2024-06-27 16:48:54,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 16:48:54,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 16:48:54,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 110 transitions. [2024-06-27 16:48:54,461 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5729166666666666 [2024-06-27 16:48:54,461 INFO L175 Difference]: Start difference. First operand has 53 places, 55 transitions, 118 flow. Second operand 3 states and 110 transitions. [2024-06-27 16:48:54,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 87 transitions, 353 flow [2024-06-27 16:48:54,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 87 transitions, 353 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-06-27 16:48:54,463 INFO L231 Difference]: Finished difference. Result has 56 places, 59 transitions, 151 flow [2024-06-27 16:48:54,463 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=151, PETRI_PLACES=56, PETRI_TRANSITIONS=59} [2024-06-27 16:48:54,464 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, -4 predicate places. [2024-06-27 16:48:54,464 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 59 transitions, 151 flow [2024-06-27 16:48:54,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 16:48:54,465 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:48:54,465 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 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] [2024-06-27 16:48:54,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 16:48:54,465 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-06-27 16:48:54,466 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:48:54,466 INFO L85 PathProgramCache]: Analyzing trace with hash -726878988, now seen corresponding path program 1 times [2024-06-27 16:48:54,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:48:54,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524198144] [2024-06-27 16:48:54,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:48:54,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:48:54,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:48:54,551 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:48:54,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:48:54,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524198144] [2024-06-27 16:48:54,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524198144] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:48:54,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:48:54,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 16:48:54,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957173130] [2024-06-27 16:48:54,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:48:54,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 16:48:54,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:48:54,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 16:48:54,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 16:48:54,559 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 64 [2024-06-27 16:48:54,559 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 59 transitions, 151 flow. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 16:48:54,559 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:48:54,560 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 64 [2024-06-27 16:48:54,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:48:59,057 INFO L124 PetriNetUnfolderBase]: 58205/75955 cut-off events. [2024-06-27 16:48:59,057 INFO L125 PetriNetUnfolderBase]: For 6612/6612 co-relation queries the response was YES. [2024-06-27 16:48:59,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162350 conditions, 75955 events. 58205/75955 cut-off events. For 6612/6612 co-relation queries the response was YES. Maximal size of possible extension queue 1706. Compared 418621 event pairs, 26534 based on Foata normal form. 1307/67806 useless extension candidates. Maximal degree in co-relation 162345. Up to 38387 conditions per place. [2024-06-27 16:48:59,329 INFO L140 encePairwiseOnDemand]: 61/64 looper letters, 90 selfloop transitions, 2 changer transitions 0/97 dead transitions. [2024-06-27 16:48:59,330 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 97 transitions, 423 flow [2024-06-27 16:48:59,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 16:48:59,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 16:48:59,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 117 transitions. [2024-06-27 16:48:59,335 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.609375 [2024-06-27 16:48:59,335 INFO L175 Difference]: Start difference. First operand has 56 places, 59 transitions, 151 flow. Second operand 3 states and 117 transitions. [2024-06-27 16:48:59,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 97 transitions, 423 flow [2024-06-27 16:48:59,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 97 transitions, 419 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 16:48:59,340 INFO L231 Difference]: Finished difference. Result has 58 places, 59 transitions, 154 flow [2024-06-27 16:48:59,340 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=154, PETRI_PLACES=58, PETRI_TRANSITIONS=59} [2024-06-27 16:48:59,341 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, -2 predicate places. [2024-06-27 16:48:59,341 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 59 transitions, 154 flow [2024-06-27 16:48:59,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 16:48:59,341 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:48:59,342 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 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] [2024-06-27 16:48:59,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 16:48:59,342 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-06-27 16:48:59,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:48:59,343 INFO L85 PathProgramCache]: Analyzing trace with hash -918990002, now seen corresponding path program 1 times [2024-06-27 16:48:59,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:48:59,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866761626] [2024-06-27 16:48:59,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:48:59,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:48:59,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:48:59,436 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:48:59,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:48:59,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866761626] [2024-06-27 16:48:59,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866761626] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:48:59,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:48:59,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 16:48:59,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521195588] [2024-06-27 16:48:59,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:48:59,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 16:48:59,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:48:59,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 16:48:59,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 16:48:59,441 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 64 [2024-06-27 16:48:59,441 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 59 transitions, 154 flow. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 16:48:59,441 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:48:59,442 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 64 [2024-06-27 16:48:59,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:49:03,137 INFO L124 PetriNetUnfolderBase]: 52030/68130 cut-off events. [2024-06-27 16:49:03,138 INFO L125 PetriNetUnfolderBase]: For 8005/8005 co-relation queries the response was YES. [2024-06-27 16:49:03,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 147209 conditions, 68130 events. 52030/68130 cut-off events. For 8005/8005 co-relation queries the response was YES. Maximal size of possible extension queue 1418. Compared 381347 event pairs, 17073 based on Foata normal form. 946/60401 useless extension candidates. Maximal degree in co-relation 147203. Up to 49230 conditions per place. [2024-06-27 16:49:03,376 INFO L140 encePairwiseOnDemand]: 61/64 looper letters, 84 selfloop transitions, 2 changer transitions 0/91 dead transitions. [2024-06-27 16:49:03,376 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 91 transitions, 401 flow [2024-06-27 16:49:03,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 16:49:03,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 16:49:03,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 111 transitions. [2024-06-27 16:49:03,377 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.578125 [2024-06-27 16:49:03,378 INFO L175 Difference]: Start difference. First operand has 58 places, 59 transitions, 154 flow. Second operand 3 states and 111 transitions. [2024-06-27 16:49:03,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 91 transitions, 401 flow [2024-06-27 16:49:03,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 91 transitions, 399 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 16:49:03,380 INFO L231 Difference]: Finished difference. Result has 60 places, 59 transitions, 160 flow [2024-06-27 16:49:03,380 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=160, PETRI_PLACES=60, PETRI_TRANSITIONS=59} [2024-06-27 16:49:03,381 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 0 predicate places. [2024-06-27 16:49:03,381 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 59 transitions, 160 flow [2024-06-27 16:49:03,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 16:49:03,381 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:49:03,381 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 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] [2024-06-27 16:49:03,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 16:49:03,382 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-06-27 16:49:03,382 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:49:03,382 INFO L85 PathProgramCache]: Analyzing trace with hash 805444724, now seen corresponding path program 1 times [2024-06-27 16:49:03,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:49:03,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385620336] [2024-06-27 16:49:03,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:49:03,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:49:03,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:49:03,467 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:49:03,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:49:03,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385620336] [2024-06-27 16:49:03,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385620336] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:49:03,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:49:03,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 16:49:03,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635332136] [2024-06-27 16:49:03,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:49:03,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 16:49:03,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:49:03,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 16:49:03,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 16:49:03,469 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 64 [2024-06-27 16:49:03,470 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 59 transitions, 160 flow. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 16:49:03,470 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:49:03,470 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 64 [2024-06-27 16:49:03,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:49:06,767 INFO L124 PetriNetUnfolderBase]: 43382/56831 cut-off events. [2024-06-27 16:49:06,768 INFO L125 PetriNetUnfolderBase]: For 9683/9683 co-relation queries the response was YES. [2024-06-27 16:49:06,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125426 conditions, 56831 events. 43382/56831 cut-off events. For 9683/9683 co-relation queries the response was YES. Maximal size of possible extension queue 1250. Compared 307376 event pairs, 11247 based on Foata normal form. 554/50408 useless extension candidates. Maximal degree in co-relation 125419. Up to 46250 conditions per place. [2024-06-27 16:49:07,004 INFO L140 encePairwiseOnDemand]: 61/64 looper letters, 76 selfloop transitions, 2 changer transitions 6/89 dead transitions. [2024-06-27 16:49:07,005 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 89 transitions, 397 flow [2024-06-27 16:49:07,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 16:49:07,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 16:49:07,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 111 transitions. [2024-06-27 16:49:07,006 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.578125 [2024-06-27 16:49:07,006 INFO L175 Difference]: Start difference. First operand has 60 places, 59 transitions, 160 flow. Second operand 3 states and 111 transitions. [2024-06-27 16:49:07,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 89 transitions, 397 flow [2024-06-27 16:49:07,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 89 transitions, 395 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 16:49:07,012 INFO L231 Difference]: Finished difference. Result has 62 places, 59 transitions, 166 flow [2024-06-27 16:49:07,013 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=166, PETRI_PLACES=62, PETRI_TRANSITIONS=59} [2024-06-27 16:49:07,013 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 2 predicate places. [2024-06-27 16:49:07,013 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 59 transitions, 166 flow [2024-06-27 16:49:07,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 16:49:07,014 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:49:07,014 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 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, 1, 1, 1, 1] [2024-06-27 16:49:07,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 16:49:07,014 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-06-27 16:49:07,015 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:49:07,015 INFO L85 PathProgramCache]: Analyzing trace with hash 46247158, now seen corresponding path program 1 times [2024-06-27 16:49:07,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:49:07,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157921227] [2024-06-27 16:49:07,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:49:07,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:49:07,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:49:07,078 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:49:07,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:49:07,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157921227] [2024-06-27 16:49:07,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157921227] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:49:07,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:49:07,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 16:49:07,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997418224] [2024-06-27 16:49:07,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:49:07,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 16:49:07,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:49:07,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 16:49:07,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 16:49:07,080 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 64 [2024-06-27 16:49:07,080 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 59 transitions, 166 flow. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 16:49:07,080 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:49:07,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 64 [2024-06-27 16:49:07,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:49:09,138 INFO L124 PetriNetUnfolderBase]: 27815/36509 cut-off events. [2024-06-27 16:49:09,138 INFO L125 PetriNetUnfolderBase]: For 9074/9074 co-relation queries the response was YES. [2024-06-27 16:49:09,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81625 conditions, 36509 events. 27815/36509 cut-off events. For 9074/9074 co-relation queries the response was YES. Maximal size of possible extension queue 926. Compared 181631 event pairs, 12783 based on Foata normal form. 312/31851 useless extension candidates. Maximal degree in co-relation 81617. Up to 30323 conditions per place. [2024-06-27 16:49:09,264 INFO L140 encePairwiseOnDemand]: 61/64 looper letters, 66 selfloop transitions, 2 changer transitions 8/81 dead transitions. [2024-06-27 16:49:09,265 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 81 transitions, 366 flow [2024-06-27 16:49:09,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 16:49:09,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 16:49:09,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 100 transitions. [2024-06-27 16:49:09,266 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5208333333333334 [2024-06-27 16:49:09,266 INFO L175 Difference]: Start difference. First operand has 62 places, 59 transitions, 166 flow. Second operand 3 states and 100 transitions. [2024-06-27 16:49:09,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 81 transitions, 366 flow [2024-06-27 16:49:09,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 81 transitions, 364 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 16:49:09,267 INFO L231 Difference]: Finished difference. Result has 64 places, 60 transitions, 176 flow [2024-06-27 16:49:09,268 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=176, PETRI_PLACES=64, PETRI_TRANSITIONS=60} [2024-06-27 16:49:09,268 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 4 predicate places. [2024-06-27 16:49:09,268 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 60 transitions, 176 flow [2024-06-27 16:49:09,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 16:49:09,268 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:49:09,269 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 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, 1, 1, 1, 1, 1, 1] [2024-06-27 16:49:09,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 16:49:09,269 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-06-27 16:49:09,269 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:49:09,269 INFO L85 PathProgramCache]: Analyzing trace with hash 1256101466, now seen corresponding path program 1 times [2024-06-27 16:49:09,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:49:09,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066940782] [2024-06-27 16:49:09,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:49:09,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:49:09,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:49:09,439 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:49:09,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:49:09,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066940782] [2024-06-27 16:49:09,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066940782] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:49:09,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:49:09,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 16:49:09,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431617224] [2024-06-27 16:49:09,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:49:09,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 16:49:09,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:49:09,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 16:49:09,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 16:49:09,446 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 64 [2024-06-27 16:49:09,447 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 60 transitions, 176 flow. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 16:49:09,447 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:49:09,447 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 64 [2024-06-27 16:49:09,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:49:11,954 INFO L124 PetriNetUnfolderBase]: 32226/42704 cut-off events. [2024-06-27 16:49:11,954 INFO L125 PetriNetUnfolderBase]: For 8885/8885 co-relation queries the response was YES. [2024-06-27 16:49:12,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95689 conditions, 42704 events. 32226/42704 cut-off events. For 8885/8885 co-relation queries the response was YES. Maximal size of possible extension queue 942. Compared 223468 event pairs, 28730 based on Foata normal form. 281/36753 useless extension candidates. Maximal degree in co-relation 95680. Up to 36456 conditions per place. [2024-06-27 16:49:12,105 INFO L140 encePairwiseOnDemand]: 59/64 looper letters, 54 selfloop transitions, 2 changer transitions 35/96 dead transitions. [2024-06-27 16:49:12,105 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 96 transitions, 438 flow [2024-06-27 16:49:12,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 16:49:12,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 16:49:12,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 132 transitions. [2024-06-27 16:49:12,106 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4125 [2024-06-27 16:49:12,106 INFO L175 Difference]: Start difference. First operand has 64 places, 60 transitions, 176 flow. Second operand 5 states and 132 transitions. [2024-06-27 16:49:12,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 96 transitions, 438 flow [2024-06-27 16:49:12,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 96 transitions, 436 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 16:49:12,108 INFO L231 Difference]: Finished difference. Result has 70 places, 61 transitions, 190 flow [2024-06-27 16:49:12,109 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=190, PETRI_PLACES=70, PETRI_TRANSITIONS=61} [2024-06-27 16:49:12,109 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 10 predicate places. [2024-06-27 16:49:12,109 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 61 transitions, 190 flow [2024-06-27 16:49:12,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 16:49:12,110 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:49:12,110 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 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, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:49:12,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 16:49:12,110 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-06-27 16:49:12,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:49:12,110 INFO L85 PathProgramCache]: Analyzing trace with hash 2035900601, now seen corresponding path program 1 times [2024-06-27 16:49:12,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:49:12,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126544595] [2024-06-27 16:49:12,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:49:12,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:49:12,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:49:12,259 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-06-27 16:49:12,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:49:12,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126544595] [2024-06-27 16:49:12,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126544595] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:49:12,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:49:12,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 16:49:12,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964120453] [2024-06-27 16:49:12,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:49:12,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 16:49:12,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:49:12,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 16:49:12,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 16:49:12,261 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 64 [2024-06-27 16:49:12,261 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 61 transitions, 190 flow. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 16:49:12,261 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:49:12,261 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 64 [2024-06-27 16:49:12,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:49:15,163 INFO L124 PetriNetUnfolderBase]: 33978/45151 cut-off events. [2024-06-27 16:49:15,164 INFO L125 PetriNetUnfolderBase]: For 9870/9870 co-relation queries the response was YES. [2024-06-27 16:49:15,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101563 conditions, 45151 events. 33978/45151 cut-off events. For 9870/9870 co-relation queries the response was YES. Maximal size of possible extension queue 953. Compared 239325 event pairs, 30389 based on Foata normal form. 98/38731 useless extension candidates. Maximal degree in co-relation 101551. Up to 36454 conditions per place. [2024-06-27 16:49:15,336 INFO L140 encePairwiseOnDemand]: 59/64 looper letters, 54 selfloop transitions, 3 changer transitions 43/105 dead transitions. [2024-06-27 16:49:15,336 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 105 transitions, 508 flow [2024-06-27 16:49:15,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 16:49:15,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 16:49:15,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 131 transitions. [2024-06-27 16:49:15,339 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.51171875 [2024-06-27 16:49:15,340 INFO L175 Difference]: Start difference. First operand has 70 places, 61 transitions, 190 flow. Second operand 4 states and 131 transitions. [2024-06-27 16:49:15,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 105 transitions, 508 flow [2024-06-27 16:49:15,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 105 transitions, 496 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-06-27 16:49:15,343 INFO L231 Difference]: Finished difference. Result has 70 places, 62 transitions, 200 flow [2024-06-27 16:49:15,343 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=200, PETRI_PLACES=70, PETRI_TRANSITIONS=62} [2024-06-27 16:49:15,343 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 10 predicate places. [2024-06-27 16:49:15,344 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 62 transitions, 200 flow [2024-06-27 16:49:15,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 16:49:15,344 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:49:15,344 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:49:15,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 16:49:15,344 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-06-27 16:49:15,345 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:49:15,345 INFO L85 PathProgramCache]: Analyzing trace with hash 1192092747, now seen corresponding path program 1 times [2024-06-27 16:49:15,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:49:15,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511890149] [2024-06-27 16:49:15,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:49:15,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:49:15,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:49:15,453 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-06-27 16:49:15,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:49:15,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511890149] [2024-06-27 16:49:15,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511890149] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:49:15,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:49:15,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 16:49:15,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148474851] [2024-06-27 16:49:15,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:49:15,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 16:49:15,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:49:15,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 16:49:15,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 16:49:15,455 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 64 [2024-06-27 16:49:15,456 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 62 transitions, 200 flow. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 16:49:15,456 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:49:15,456 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 64 [2024-06-27 16:49:15,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand