./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix046.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a340643f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix046.opt.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f69f777f524a62a415fc7cacc9442c44e05883e29c36815b4e0d58199826b331 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-a340643-m [2024-01-27 16:14:06,557 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-27 16:14:06,619 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-27 16:14:06,624 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-27 16:14:06,625 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-27 16:14:06,647 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-27 16:14:06,647 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-27 16:14:06,647 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-27 16:14:06,648 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-27 16:14:06,651 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-27 16:14:06,651 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-27 16:14:06,652 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-27 16:14:06,653 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-27 16:14:06,654 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-27 16:14:06,654 INFO L153 SettingsManager]: * Use SBE=true [2024-01-27 16:14:06,654 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-27 16:14:06,654 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-27 16:14:06,654 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-27 16:14:06,655 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-27 16:14:06,655 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-27 16:14:06,656 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-27 16:14:06,656 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-27 16:14:06,656 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-27 16:14:06,657 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-27 16:14:06,657 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-27 16:14:06,657 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-27 16:14:06,657 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-27 16:14:06,657 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-27 16:14:06,658 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-27 16:14:06,658 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-27 16:14:06,659 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-27 16:14:06,659 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-27 16:14:06,659 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 16:14:06,659 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-27 16:14:06,659 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-27 16:14:06,659 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-27 16:14:06,660 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-27 16:14:06,660 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-27 16:14:06,660 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-27 16:14:06,660 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-27 16:14:06,660 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-27 16:14:06,661 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-27 16:14:06,661 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-27 16:14:06,661 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f69f777f524a62a415fc7cacc9442c44e05883e29c36815b4e0d58199826b331 [2024-01-27 16:14:06,908 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-27 16:14:06,929 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-27 16:14:06,931 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-27 16:14:06,932 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-27 16:14:06,932 INFO L274 PluginConnector]: CDTParser initialized [2024-01-27 16:14:06,933 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix046.opt.i [2024-01-27 16:14:07,922 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-27 16:14:08,197 INFO L384 CDTParser]: Found 1 translation units. [2024-01-27 16:14:08,201 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix046.opt.i [2024-01-27 16:14:08,222 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6344115fd/be8ac3b207f14a9c876d553065e1e52e/FLAGb0b9ff909 [2024-01-27 16:14:08,236 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6344115fd/be8ac3b207f14a9c876d553065e1e52e [2024-01-27 16:14:08,238 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-27 16:14:08,239 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-01-27 16:14:08,240 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-27 16:14:08,240 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-27 16:14:08,244 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-27 16:14:08,245 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 04:14:08" (1/1) ... [2024-01-27 16:14:08,246 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45aeca5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:14:08, skipping insertion in model container [2024-01-27 16:14:08,246 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 04:14:08" (1/1) ... [2024-01-27 16:14:08,293 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-01-27 16:14:08,450 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/mix046.opt.i[944,957] [2024-01-27 16:14:08,628 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 16:14:08,639 INFO L202 MainTranslator]: Completed pre-run [2024-01-27 16:14:08,649 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/mix046.opt.i[944,957] [2024-01-27 16:14:08,705 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 16:14:08,738 INFO L206 MainTranslator]: Completed translation [2024-01-27 16:14:08,738 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:14:08 WrapperNode [2024-01-27 16:14:08,738 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-27 16:14:08,739 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-27 16:14:08,740 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-27 16:14:08,740 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-27 16:14:08,745 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:14:08" (1/1) ... [2024-01-27 16:14:08,767 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:14:08" (1/1) ... [2024-01-27 16:14:08,801 INFO L138 Inliner]: procedures = 177, calls = 71, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 167 [2024-01-27 16:14:08,807 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-27 16:14:08,808 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-27 16:14:08,808 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-27 16:14:08,808 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-27 16:14:08,816 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:14:08" (1/1) ... [2024-01-27 16:14:08,817 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:14:08" (1/1) ... [2024-01-27 16:14:08,832 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:14:08" (1/1) ... [2024-01-27 16:14:08,849 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 16:14:08,856 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:14:08" (1/1) ... [2024-01-27 16:14:08,856 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:14:08" (1/1) ... [2024-01-27 16:14:08,862 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:14:08" (1/1) ... [2024-01-27 16:14:08,863 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:14:08" (1/1) ... [2024-01-27 16:14:08,869 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:14:08" (1/1) ... [2024-01-27 16:14:08,870 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:14:08" (1/1) ... [2024-01-27 16:14:08,872 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-27 16:14:08,873 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-27 16:14:08,873 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-27 16:14:08,873 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-27 16:14:08,882 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:14:08" (1/1) ... [2024-01-27 16:14:08,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 16:14:08,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 16:14:08,907 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-01-27 16:14:08,914 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-01-27 16:14:08,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-27 16:14:08,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-27 16:14:08,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-27 16:14:08,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-27 16:14:08,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-01-27 16:14:08,947 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-01-27 16:14:08,948 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-27 16:14:08,949 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-27 16:14:08,949 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-27 16:14:08,949 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-01-27 16:14:08,949 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-01-27 16:14:08,949 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-01-27 16:14:08,950 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-01-27 16:14:08,950 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-01-27 16:14:08,950 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-01-27 16:14:08,950 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-01-27 16:14:08,950 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-01-27 16:14:08,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-27 16:14:08,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-27 16:14:08,952 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-27 16:14:08,952 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-27 16:14:08,952 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-01-27 16:14:08,952 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-01-27 16:14:08,952 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-27 16:14:08,953 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-27 16:14:08,954 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-27 16:14:09,108 INFO L244 CfgBuilder]: Building ICFG [2024-01-27 16:14:09,110 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-27 16:14:09,408 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-27 16:14:09,408 INFO L293 CfgBuilder]: Performing block encoding [2024-01-27 16:14:09,587 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-27 16:14:09,587 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-01-27 16:14:09,588 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 04:14:09 BoogieIcfgContainer [2024-01-27 16:14:09,588 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-27 16:14:09,629 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-27 16:14:09,629 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-27 16:14:09,631 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-27 16:14:09,632 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 04:14:08" (1/3) ... [2024-01-27 16:14:09,632 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19ec071e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 04:14:09, skipping insertion in model container [2024-01-27 16:14:09,632 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:14:08" (2/3) ... [2024-01-27 16:14:09,633 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19ec071e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 04:14:09, skipping insertion in model container [2024-01-27 16:14:09,633 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 04:14:09" (3/3) ... [2024-01-27 16:14:09,634 INFO L112 eAbstractionObserver]: Analyzing ICFG mix046.opt.i [2024-01-27 16:14:09,641 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2024-01-27 16:14:09,648 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-27 16:14:09,649 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-01-27 16:14:09,649 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-27 16:14:09,681 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-01-27 16:14:09,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 62 places, 50 transitions, 116 flow [2024-01-27 16:14:09,726 INFO L124 PetriNetUnfolderBase]: 1/46 cut-off events. [2024-01-27 16:14:09,727 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-27 16:14:09,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59 conditions, 46 events. 1/46 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 98 event pairs, 0 based on Foata normal form. 0/43 useless extension candidates. Maximal degree in co-relation 50. Up to 2 conditions per place. [2024-01-27 16:14:09,731 INFO L82 GeneralOperation]: Start removeDead. Operand has 62 places, 50 transitions, 116 flow [2024-01-27 16:14:09,733 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 58 places, 46 transitions, 104 flow [2024-01-27 16:14:09,740 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-27 16:14:09,745 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;@6e79db8f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-27 16:14:09,746 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-01-27 16:14:09,752 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-27 16:14:09,752 INFO L124 PetriNetUnfolderBase]: 0/24 cut-off events. [2024-01-27 16:14:09,753 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-27 16:14:09,753 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:14:09,754 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 16:14:09,754 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 16:14:09,758 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:14:09,758 INFO L85 PathProgramCache]: Analyzing trace with hash -1400924090, now seen corresponding path program 1 times [2024-01-27 16:14:09,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:14:09,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800352689] [2024-01-27 16:14:09,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:14:09,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:14:09,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:14:10,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 16:14:10,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:14:10,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800352689] [2024-01-27 16:14:10,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800352689] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:14:10,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:14:10,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-27 16:14:10,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379234504] [2024-01-27 16:14:10,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:14:10,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 16:14:10,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:14:10,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 16:14:10,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 16:14:10,245 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 50 [2024-01-27 16:14:10,247 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 46 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 16:14:10,247 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:14:10,248 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 50 [2024-01-27 16:14:10,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:14:10,555 INFO L124 PetriNetUnfolderBase]: 815/1615 cut-off events. [2024-01-27 16:14:10,555 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-27 16:14:10,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2847 conditions, 1615 events. 815/1615 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 11888 event pairs, 179 based on Foata normal form. 48/1608 useless extension candidates. Maximal degree in co-relation 2835. Up to 889 conditions per place. [2024-01-27 16:14:10,568 INFO L140 encePairwiseOnDemand]: 46/50 looper letters, 27 selfloop transitions, 2 changer transitions 2/54 dead transitions. [2024-01-27 16:14:10,568 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 54 transitions, 182 flow [2024-01-27 16:14:10,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 16:14:10,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 16:14:10,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 115 transitions. [2024-01-27 16:14:10,579 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7666666666666667 [2024-01-27 16:14:10,580 INFO L175 Difference]: Start difference. First operand has 58 places, 46 transitions, 104 flow. Second operand 3 states and 115 transitions. [2024-01-27 16:14:10,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 54 transitions, 182 flow [2024-01-27 16:14:10,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 54 transitions, 178 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-01-27 16:14:10,589 INFO L231 Difference]: Finished difference. Result has 55 places, 43 transitions, 98 flow [2024-01-27 16:14:10,590 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=55, PETRI_TRANSITIONS=43} [2024-01-27 16:14:10,594 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, -3 predicate places. [2024-01-27 16:14:10,594 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 43 transitions, 98 flow [2024-01-27 16:14:10,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 16:14:10,595 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:14:10,595 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 16:14:10,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-27 16:14:10,595 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 16:14:10,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:14:10,597 INFO L85 PathProgramCache]: Analyzing trace with hash -2128218480, now seen corresponding path program 1 times [2024-01-27 16:14:10,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:14:10,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259366189] [2024-01-27 16:14:10,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:14:10,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:14:10,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:14:10,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 16:14:10,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:14:10,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259366189] [2024-01-27 16:14:10,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259366189] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:14:10,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:14:10,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-27 16:14:10,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046105663] [2024-01-27 16:14:10,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:14:10,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 16:14:10,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:14:10,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 16:14:10,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-27 16:14:10,847 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 50 [2024-01-27 16:14:10,849 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 43 transitions, 98 flow. Second operand has 5 states, 5 states have (on average 26.8) internal successors, (134), 5 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 16:14:10,849 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:14:10,849 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 50 [2024-01-27 16:14:10,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:14:11,195 INFO L124 PetriNetUnfolderBase]: 1327/2211 cut-off events. [2024-01-27 16:14:11,196 INFO L125 PetriNetUnfolderBase]: For 84/84 co-relation queries the response was YES. [2024-01-27 16:14:11,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4265 conditions, 2211 events. 1327/2211 cut-off events. For 84/84 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 15837 event pairs, 307 based on Foata normal form. 0/2120 useless extension candidates. Maximal degree in co-relation 4255. Up to 853 conditions per place. [2024-01-27 16:14:11,207 INFO L140 encePairwiseOnDemand]: 44/50 looper letters, 27 selfloop transitions, 2 changer transitions 36/85 dead transitions. [2024-01-27 16:14:11,208 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 85 transitions, 316 flow [2024-01-27 16:14:11,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-27 16:14:11,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-27 16:14:11,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 259 transitions. [2024-01-27 16:14:11,210 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6475 [2024-01-27 16:14:11,210 INFO L175 Difference]: Start difference. First operand has 55 places, 43 transitions, 98 flow. Second operand 8 states and 259 transitions. [2024-01-27 16:14:11,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 85 transitions, 316 flow [2024-01-27 16:14:11,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 85 transitions, 308 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-27 16:14:11,212 INFO L231 Difference]: Finished difference. Result has 64 places, 42 transitions, 108 flow [2024-01-27 16:14:11,213 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, 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=8, PETRI_FLOW=108, PETRI_PLACES=64, PETRI_TRANSITIONS=42} [2024-01-27 16:14:11,213 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 6 predicate places. [2024-01-27 16:14:11,213 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 42 transitions, 108 flow [2024-01-27 16:14:11,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.8) internal successors, (134), 5 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 16:14:11,214 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:14:11,214 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] [2024-01-27 16:14:11,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-27 16:14:11,214 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 16:14:11,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:14:11,215 INFO L85 PathProgramCache]: Analyzing trace with hash 1482202739, now seen corresponding path program 1 times [2024-01-27 16:14:11,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:14:11,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2864613] [2024-01-27 16:14:11,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:14:11,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:14:11,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:14:11,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 16:14:11,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:14:11,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2864613] [2024-01-27 16:14:11,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2864613] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:14:11,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:14:11,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 16:14:11,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257647553] [2024-01-27 16:14:11,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:14:11,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-27 16:14:11,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:14:11,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-27 16:14:11,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-01-27 16:14:11,560 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 50 [2024-01-27 16:14:11,561 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 42 transitions, 108 flow. Second operand has 6 states, 6 states have (on average 22.666666666666668) internal successors, (136), 6 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 16:14:11,561 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:14:11,561 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 50 [2024-01-27 16:14:11,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:14:12,817 INFO L124 PetriNetUnfolderBase]: 6763/11102 cut-off events. [2024-01-27 16:14:12,818 INFO L125 PetriNetUnfolderBase]: For 1975/1975 co-relation queries the response was YES. [2024-01-27 16:14:12,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22707 conditions, 11102 events. 6763/11102 cut-off events. For 1975/1975 co-relation queries the response was YES. Maximal size of possible extension queue 600. Compared 84153 event pairs, 337 based on Foata normal form. 238/11291 useless extension candidates. Maximal degree in co-relation 22692. Up to 5575 conditions per place. [2024-01-27 16:14:12,883 INFO L140 encePairwiseOnDemand]: 37/50 looper letters, 50 selfloop transitions, 12 changer transitions 57/135 dead transitions. [2024-01-27 16:14:12,883 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 135 transitions, 570 flow [2024-01-27 16:14:12,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-27 16:14:12,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-27 16:14:12,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 322 transitions. [2024-01-27 16:14:12,887 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.644 [2024-01-27 16:14:12,887 INFO L175 Difference]: Start difference. First operand has 64 places, 42 transitions, 108 flow. Second operand 10 states and 322 transitions. [2024-01-27 16:14:12,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 135 transitions, 570 flow [2024-01-27 16:14:12,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 135 transitions, 534 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-01-27 16:14:12,970 INFO L231 Difference]: Finished difference. Result has 69 places, 52 transitions, 202 flow [2024-01-27 16:14:12,970 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=202, PETRI_PLACES=69, PETRI_TRANSITIONS=52} [2024-01-27 16:14:12,971 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 11 predicate places. [2024-01-27 16:14:12,971 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 52 transitions, 202 flow [2024-01-27 16:14:12,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.666666666666668) internal successors, (136), 6 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 16:14:12,972 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:14:12,972 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 16:14:12,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-27 16:14:12,972 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 16:14:12,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:14:12,973 INFO L85 PathProgramCache]: Analyzing trace with hash 1709638354, now seen corresponding path program 1 times [2024-01-27 16:14:12,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:14:12,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336084606] [2024-01-27 16:14:12,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:14:12,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:14:13,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:14:13,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 16:14:13,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:14:13,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336084606] [2024-01-27 16:14:13,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336084606] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:14:13,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:14:13,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 16:14:13,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705671884] [2024-01-27 16:14:13,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:14:13,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-27 16:14:13,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:14:13,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-27 16:14:13,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-01-27 16:14:13,419 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 50 [2024-01-27 16:14:13,419 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 52 transitions, 202 flow. Second operand has 6 states, 6 states have (on average 26.5) internal successors, (159), 6 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 16:14:13,419 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:14:13,419 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 50 [2024-01-27 16:14:13,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:14:14,616 INFO L124 PetriNetUnfolderBase]: 5836/10413 cut-off events. [2024-01-27 16:14:14,616 INFO L125 PetriNetUnfolderBase]: For 9362/9616 co-relation queries the response was YES. [2024-01-27 16:14:14,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28768 conditions, 10413 events. 5836/10413 cut-off events. For 9362/9616 co-relation queries the response was YES. Maximal size of possible extension queue 654. Compared 87827 event pairs, 2179 based on Foata normal form. 248/10137 useless extension candidates. Maximal degree in co-relation 28749. Up to 5306 conditions per place. [2024-01-27 16:14:14,697 INFO L140 encePairwiseOnDemand]: 42/50 looper letters, 47 selfloop transitions, 14 changer transitions 16/103 dead transitions. [2024-01-27 16:14:14,698 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 103 transitions, 556 flow [2024-01-27 16:14:14,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-27 16:14:14,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-27 16:14:14,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 257 transitions. [2024-01-27 16:14:14,699 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6425 [2024-01-27 16:14:14,699 INFO L175 Difference]: Start difference. First operand has 69 places, 52 transitions, 202 flow. Second operand 8 states and 257 transitions. [2024-01-27 16:14:14,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 103 transitions, 556 flow [2024-01-27 16:14:14,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 103 transitions, 540 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-01-27 16:14:14,736 INFO L231 Difference]: Finished difference. Result has 71 places, 65 transitions, 334 flow [2024-01-27 16:14:14,736 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=334, PETRI_PLACES=71, PETRI_TRANSITIONS=65} [2024-01-27 16:14:14,737 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 13 predicate places. [2024-01-27 16:14:14,737 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 65 transitions, 334 flow [2024-01-27 16:14:14,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.5) internal successors, (159), 6 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 16:14:14,737 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:14:14,737 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 16:14:14,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-27 16:14:14,738 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 16:14:14,738 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:14:14,738 INFO L85 PathProgramCache]: Analyzing trace with hash 481227124, now seen corresponding path program 2 times [2024-01-27 16:14:14,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:14:14,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764972368] [2024-01-27 16:14:14,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:14:14,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:14:14,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:14:15,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 16:14:15,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:14:15,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764972368] [2024-01-27 16:14:15,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764972368] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:14:15,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:14:15,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-27 16:14:15,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528554174] [2024-01-27 16:14:15,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:14:15,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-27 16:14:15,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:14:15,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-27 16:14:15,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-01-27 16:14:15,139 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 50 [2024-01-27 16:14:15,139 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 65 transitions, 334 flow. Second operand has 7 states, 7 states have (on average 26.142857142857142) internal successors, (183), 7 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 16:14:15,139 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:14:15,139 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 50 [2024-01-27 16:14:15,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:14:16,381 INFO L124 PetriNetUnfolderBase]: 6216/10877 cut-off events. [2024-01-27 16:14:16,381 INFO L125 PetriNetUnfolderBase]: For 14142/14844 co-relation queries the response was YES. [2024-01-27 16:14:16,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33223 conditions, 10877 events. 6216/10877 cut-off events. For 14142/14844 co-relation queries the response was YES. Maximal size of possible extension queue 687. Compared 90821 event pairs, 2142 based on Foata normal form. 418/10747 useless extension candidates. Maximal degree in co-relation 33201. Up to 5559 conditions per place. [2024-01-27 16:14:16,483 INFO L140 encePairwiseOnDemand]: 41/50 looper letters, 59 selfloop transitions, 26 changer transitions 30/141 dead transitions. [2024-01-27 16:14:16,483 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 141 transitions, 984 flow [2024-01-27 16:14:16,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-01-27 16:14:16,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-01-27 16:14:16,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 347 transitions. [2024-01-27 16:14:16,485 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6309090909090909 [2024-01-27 16:14:16,485 INFO L175 Difference]: Start difference. First operand has 71 places, 65 transitions, 334 flow. Second operand 11 states and 347 transitions. [2024-01-27 16:14:16,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 141 transitions, 984 flow [2024-01-27 16:14:16,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 141 transitions, 984 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-01-27 16:14:16,503 INFO L231 Difference]: Finished difference. Result has 88 places, 87 transitions, 630 flow [2024-01-27 16:14:16,503 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=630, PETRI_PLACES=88, PETRI_TRANSITIONS=87} [2024-01-27 16:14:16,504 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 30 predicate places. [2024-01-27 16:14:16,504 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 87 transitions, 630 flow [2024-01-27 16:14:16,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 26.142857142857142) internal successors, (183), 7 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 16:14:16,505 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:14:16,505 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 16:14:16,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-27 16:14:16,505 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 16:14:16,505 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:14:16,506 INFO L85 PathProgramCache]: Analyzing trace with hash 386041716, now seen corresponding path program 1 times [2024-01-27 16:14:16,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:14:16,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340064769] [2024-01-27 16:14:16,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:14:16,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:14:16,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:14:17,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 16:14:17,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:14:17,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340064769] [2024-01-27 16:14:17,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340064769] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:14:17,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:14:17,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-27 16:14:17,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648539317] [2024-01-27 16:14:17,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:14:17,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-27 16:14:17,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:14:17,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-27 16:14:17,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-01-27 16:14:17,035 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 50 [2024-01-27 16:14:17,035 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 87 transitions, 630 flow. Second operand has 8 states, 8 states have (on average 26.0) internal successors, (208), 8 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 16:14:17,036 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:14:17,036 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 50 [2024-01-27 16:14:17,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:14:18,401 INFO L124 PetriNetUnfolderBase]: 6237/11008 cut-off events. [2024-01-27 16:14:18,402 INFO L125 PetriNetUnfolderBase]: For 33865/35244 co-relation queries the response was YES. [2024-01-27 16:14:18,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40112 conditions, 11008 events. 6237/11008 cut-off events. For 33865/35244 co-relation queries the response was YES. Maximal size of possible extension queue 710. Compared 93578 event pairs, 1689 based on Foata normal form. 383/10731 useless extension candidates. Maximal degree in co-relation 40081. Up to 5702 conditions per place. [2024-01-27 16:14:18,491 INFO L140 encePairwiseOnDemand]: 41/50 looper letters, 73 selfloop transitions, 19 changer transitions 31/149 dead transitions. [2024-01-27 16:14:18,492 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 149 transitions, 1330 flow [2024-01-27 16:14:18,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-27 16:14:18,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-27 16:14:18,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 287 transitions. [2024-01-27 16:14:18,493 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6377777777777778 [2024-01-27 16:14:18,493 INFO L175 Difference]: Start difference. First operand has 88 places, 87 transitions, 630 flow. Second operand 9 states and 287 transitions. [2024-01-27 16:14:18,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 149 transitions, 1330 flow [2024-01-27 16:14:18,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 149 transitions, 1270 flow, removed 30 selfloop flow, removed 1 redundant places. [2024-01-27 16:14:18,565 INFO L231 Difference]: Finished difference. Result has 99 places, 97 transitions, 793 flow [2024-01-27 16:14:18,565 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=598, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=793, PETRI_PLACES=99, PETRI_TRANSITIONS=97} [2024-01-27 16:14:18,566 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 41 predicate places. [2024-01-27 16:14:18,566 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 97 transitions, 793 flow [2024-01-27 16:14:18,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 26.0) internal successors, (208), 8 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 16:14:18,566 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:14:18,567 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 16:14:18,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-27 16:14:18,567 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 16:14:18,567 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:14:18,567 INFO L85 PathProgramCache]: Analyzing trace with hash -1527098406, now seen corresponding path program 2 times [2024-01-27 16:14:18,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:14:18,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475630166] [2024-01-27 16:14:18,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:14:18,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:14:18,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:14:18,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 16:14:18,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:14:18,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475630166] [2024-01-27 16:14:18,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475630166] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:14:18,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:14:18,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-27 16:14:18,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890671862] [2024-01-27 16:14:18,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:14:18,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-27 16:14:18,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:14:18,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-27 16:14:18,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-01-27 16:14:18,973 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 50 [2024-01-27 16:14:18,973 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 97 transitions, 793 flow. Second operand has 8 states, 8 states have (on average 26.0) internal successors, (208), 8 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 16:14:18,973 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:14:18,973 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 50 [2024-01-27 16:14:18,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:14:20,610 INFO L124 PetriNetUnfolderBase]: 7275/12863 cut-off events. [2024-01-27 16:14:20,610 INFO L125 PetriNetUnfolderBase]: For 68351/70161 co-relation queries the response was YES. [2024-01-27 16:14:20,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51868 conditions, 12863 events. 7275/12863 cut-off events. For 68351/70161 co-relation queries the response was YES. Maximal size of possible extension queue 850. Compared 112175 event pairs, 1840 based on Foata normal form. 471/12643 useless extension candidates. Maximal degree in co-relation 51830. Up to 5374 conditions per place. [2024-01-27 16:14:20,730 INFO L140 encePairwiseOnDemand]: 41/50 looper letters, 69 selfloop transitions, 44 changer transitions 23/162 dead transitions. [2024-01-27 16:14:20,731 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 162 transitions, 1695 flow [2024-01-27 16:14:20,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-27 16:14:20,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-27 16:14:20,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 290 transitions. [2024-01-27 16:14:20,732 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6444444444444445 [2024-01-27 16:14:20,733 INFO L175 Difference]: Start difference. First operand has 99 places, 97 transitions, 793 flow. Second operand 9 states and 290 transitions. [2024-01-27 16:14:20,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 162 transitions, 1695 flow [2024-01-27 16:14:20,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 162 transitions, 1614 flow, removed 32 selfloop flow, removed 3 redundant places. [2024-01-27 16:14:20,884 INFO L231 Difference]: Finished difference. Result has 105 places, 111 transitions, 1095 flow [2024-01-27 16:14:20,885 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=738, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1095, PETRI_PLACES=105, PETRI_TRANSITIONS=111} [2024-01-27 16:14:20,886 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 47 predicate places. [2024-01-27 16:14:20,886 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 111 transitions, 1095 flow [2024-01-27 16:14:20,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 26.0) internal successors, (208), 8 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 16:14:20,886 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:14:20,886 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 16:14:20,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-01-27 16:14:20,887 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 16:14:20,887 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:14:20,887 INFO L85 PathProgramCache]: Analyzing trace with hash -485833064, now seen corresponding path program 3 times [2024-01-27 16:14:20,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:14:20,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262892348] [2024-01-27 16:14:20,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:14:20,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:14:20,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:14:21,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 16:14:21,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:14:21,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262892348] [2024-01-27 16:14:21,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262892348] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:14:21,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:14:21,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-27 16:14:21,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083077458] [2024-01-27 16:14:21,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:14:21,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-27 16:14:21,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:14:21,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-27 16:14:21,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-01-27 16:14:21,387 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 50 [2024-01-27 16:14:21,387 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 111 transitions, 1095 flow. Second operand has 8 states, 8 states have (on average 26.0) internal successors, (208), 8 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 16:14:21,387 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:14:21,388 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 50 [2024-01-27 16:14:21,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:14:23,080 INFO L124 PetriNetUnfolderBase]: 7686/13520 cut-off events. [2024-01-27 16:14:23,081 INFO L125 PetriNetUnfolderBase]: For 103032/105036 co-relation queries the response was YES. [2024-01-27 16:14:23,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59373 conditions, 13520 events. 7686/13520 cut-off events. For 103032/105036 co-relation queries the response was YES. Maximal size of possible extension queue 904. Compared 118354 event pairs, 1900 based on Foata normal form. 934/13797 useless extension candidates. Maximal degree in co-relation 59331. Up to 5133 conditions per place. [2024-01-27 16:14:23,316 INFO L140 encePairwiseOnDemand]: 42/50 looper letters, 71 selfloop transitions, 61 changer transitions 35/193 dead transitions. [2024-01-27 16:14:23,316 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 193 transitions, 2342 flow [2024-01-27 16:14:23,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-01-27 16:14:23,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-01-27 16:14:23,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 406 transitions. [2024-01-27 16:14:23,322 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6246153846153846 [2024-01-27 16:14:23,322 INFO L175 Difference]: Start difference. First operand has 105 places, 111 transitions, 1095 flow. Second operand 13 states and 406 transitions. [2024-01-27 16:14:23,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 193 transitions, 2342 flow [2024-01-27 16:14:23,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 193 transitions, 2150 flow, removed 88 selfloop flow, removed 8 redundant places. [2024-01-27 16:14:23,703 INFO L231 Difference]: Finished difference. Result has 117 places, 119 transitions, 1376 flow [2024-01-27 16:14:23,703 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=997, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1376, PETRI_PLACES=117, PETRI_TRANSITIONS=119} [2024-01-27 16:14:23,704 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 59 predicate places. [2024-01-27 16:14:23,704 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 119 transitions, 1376 flow [2024-01-27 16:14:23,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 26.0) internal successors, (208), 8 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 16:14:23,704 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:14:23,704 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 16:14:23,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-01-27 16:14:23,705 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 16:14:23,705 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:14:23,705 INFO L85 PathProgramCache]: Analyzing trace with hash 1995617137, now seen corresponding path program 1 times [2024-01-27 16:14:23,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:14:23,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540650980] [2024-01-27 16:14:23,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:14:23,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:14:23,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:14:24,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 16:14:24,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:14:24,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540650980] [2024-01-27 16:14:24,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540650980] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:14:24,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:14:24,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-27 16:14:24,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159778346] [2024-01-27 16:14:24,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:14:24,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-27 16:14:24,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:14:24,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-27 16:14:24,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-01-27 16:14:24,366 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 50 [2024-01-27 16:14:24,367 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 119 transitions, 1376 flow. Second operand has 9 states, 9 states have (on average 25.88888888888889) internal successors, (233), 9 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 16:14:24,367 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:14:24,367 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 50 [2024-01-27 16:14:24,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:14:25,922 INFO L124 PetriNetUnfolderBase]: 7662/13661 cut-off events. [2024-01-27 16:14:25,923 INFO L125 PetriNetUnfolderBase]: For 103696/105810 co-relation queries the response was YES. [2024-01-27 16:14:26,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61165 conditions, 13661 events. 7662/13661 cut-off events. For 103696/105810 co-relation queries the response was YES. Maximal size of possible extension queue 936. Compared 121651 event pairs, 2212 based on Foata normal form. 393/13257 useless extension candidates. Maximal degree in co-relation 61118. Up to 6853 conditions per place. [2024-01-27 16:14:26,105 INFO L140 encePairwiseOnDemand]: 41/50 looper letters, 94 selfloop transitions, 23 changer transitions 21/164 dead transitions. [2024-01-27 16:14:26,106 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 164 transitions, 1984 flow [2024-01-27 16:14:26,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-27 16:14:26,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-27 16:14:26,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 284 transitions. [2024-01-27 16:14:26,107 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6311111111111111 [2024-01-27 16:14:26,107 INFO L175 Difference]: Start difference. First operand has 117 places, 119 transitions, 1376 flow. Second operand 9 states and 284 transitions. [2024-01-27 16:14:26,108 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 164 transitions, 1984 flow [2024-01-27 16:14:26,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 164 transitions, 1869 flow, removed 35 selfloop flow, removed 11 redundant places. [2024-01-27 16:14:26,424 INFO L231 Difference]: Finished difference. Result has 117 places, 121 transitions, 1398 flow [2024-01-27 16:14:26,424 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1275, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1398, PETRI_PLACES=117, PETRI_TRANSITIONS=121} [2024-01-27 16:14:26,425 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 59 predicate places. [2024-01-27 16:14:26,425 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 121 transitions, 1398 flow [2024-01-27 16:14:26,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 25.88888888888889) internal successors, (233), 9 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 16:14:26,425 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:14:26,425 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 16:14:26,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-01-27 16:14:26,426 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 16:14:26,426 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:14:26,426 INFO L85 PathProgramCache]: Analyzing trace with hash 1349417109, now seen corresponding path program 2 times [2024-01-27 16:14:26,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:14:26,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929591912] [2024-01-27 16:14:26,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:14:26,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:14:26,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:14:26,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 16:14:26,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:14:26,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929591912] [2024-01-27 16:14:26,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929591912] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:14:26,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:14:26,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-27 16:14:26,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002922979] [2024-01-27 16:14:26,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:14:26,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-27 16:14:26,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:14:26,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-27 16:14:26,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-01-27 16:14:26,973 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 50 [2024-01-27 16:14:26,974 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 121 transitions, 1398 flow. Second operand has 9 states, 9 states have (on average 25.88888888888889) internal successors, (233), 9 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 16:14:26,974 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:14:26,974 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 50 [2024-01-27 16:14:26,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:14:28,574 INFO L124 PetriNetUnfolderBase]: 7292/13063 cut-off events. [2024-01-27 16:14:28,575 INFO L125 PetriNetUnfolderBase]: For 93613/95569 co-relation queries the response was YES. [2024-01-27 16:14:28,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57689 conditions, 13063 events. 7292/13063 cut-off events. For 93613/95569 co-relation queries the response was YES. Maximal size of possible extension queue 913. Compared 116205 event pairs, 2005 based on Foata normal form. 393/12707 useless extension candidates. Maximal degree in co-relation 57642. Up to 4861 conditions per place. [2024-01-27 16:14:28,723 INFO L140 encePairwiseOnDemand]: 41/50 looper letters, 76 selfloop transitions, 51 changer transitions 11/164 dead transitions. [2024-01-27 16:14:28,723 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 164 transitions, 2003 flow [2024-01-27 16:14:28,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-27 16:14:28,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-27 16:14:28,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 284 transitions. [2024-01-27 16:14:28,725 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6311111111111111 [2024-01-27 16:14:28,725 INFO L175 Difference]: Start difference. First operand has 117 places, 121 transitions, 1398 flow. Second operand 9 states and 284 transitions. [2024-01-27 16:14:28,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 164 transitions, 2003 flow [2024-01-27 16:14:28,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 164 transitions, 1899 flow, removed 33 selfloop flow, removed 7 redundant places. [2024-01-27 16:14:28,963 INFO L231 Difference]: Finished difference. Result has 119 places, 121 transitions, 1488 flow [2024-01-27 16:14:28,964 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1322, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1488, PETRI_PLACES=119, PETRI_TRANSITIONS=121} [2024-01-27 16:14:28,964 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 61 predicate places. [2024-01-27 16:14:28,964 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 121 transitions, 1488 flow [2024-01-27 16:14:28,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 25.88888888888889) internal successors, (233), 9 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 16:14:28,965 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:14:28,965 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 16:14:28,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-01-27 16:14:28,965 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 16:14:28,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:14:28,965 INFO L85 PathProgramCache]: Analyzing trace with hash -1821737107, now seen corresponding path program 1 times [2024-01-27 16:14:28,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:14:28,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629019054] [2024-01-27 16:14:28,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:14:28,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:14:28,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:14:29,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 16:14:29,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:14:29,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629019054] [2024-01-27 16:14:29,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629019054] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:14:29,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:14:29,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-27 16:14:29,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877354915] [2024-01-27 16:14:29,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:14:29,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 16:14:29,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:14:29,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 16:14:29,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-27 16:14:29,097 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 50 [2024-01-27 16:14:29,097 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 121 transitions, 1488 flow. Second operand has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 16:14:29,097 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:14:29,097 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 50 [2024-01-27 16:14:29,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:14:32,806 INFO L124 PetriNetUnfolderBase]: 22523/33859 cut-off events. [2024-01-27 16:14:32,806 INFO L125 PetriNetUnfolderBase]: For 353121/363249 co-relation queries the response was YES. [2024-01-27 16:14:33,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 153219 conditions, 33859 events. 22523/33859 cut-off events. For 353121/363249 co-relation queries the response was YES. Maximal size of possible extension queue 2112. Compared 262703 event pairs, 4485 based on Foata normal form. 3458/35323 useless extension candidates. Maximal degree in co-relation 153171. Up to 17935 conditions per place. [2024-01-27 16:14:33,175 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 163 selfloop transitions, 6 changer transitions 0/197 dead transitions. [2024-01-27 16:14:33,176 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 197 transitions, 2944 flow [2024-01-27 16:14:33,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-27 16:14:33,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-27 16:14:33,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 141 transitions. [2024-01-27 16:14:33,177 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.705 [2024-01-27 16:14:33,177 INFO L175 Difference]: Start difference. First operand has 119 places, 121 transitions, 1488 flow. Second operand 4 states and 141 transitions. [2024-01-27 16:14:33,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 197 transitions, 2944 flow [2024-01-27 16:14:34,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 197 transitions, 2745 flow, removed 19 selfloop flow, removed 11 redundant places. [2024-01-27 16:14:34,036 INFO L231 Difference]: Finished difference. Result has 113 places, 126 transitions, 1407 flow [2024-01-27 16:14:34,036 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1361, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1407, PETRI_PLACES=113, PETRI_TRANSITIONS=126} [2024-01-27 16:14:34,037 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 55 predicate places. [2024-01-27 16:14:34,037 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 126 transitions, 1407 flow [2024-01-27 16:14:34,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 16:14:34,037 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:14:34,037 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 16:14:34,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-01-27 16:14:34,038 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 16:14:34,038 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:14:34,038 INFO L85 PathProgramCache]: Analyzing trace with hash 408226816, now seen corresponding path program 1 times [2024-01-27 16:14:34,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:14:34,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852520716] [2024-01-27 16:14:34,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:14:34,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:14:34,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:14:34,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 16:14:34,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:14:34,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852520716] [2024-01-27 16:14:34,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852520716] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:14:34,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:14:34,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-27 16:14:34,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259839198] [2024-01-27 16:14:34,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:14:34,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 16:14:34,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:14:34,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 16:14:34,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-01-27 16:14:34,154 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 50 [2024-01-27 16:14:34,155 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 126 transitions, 1407 flow. Second operand has 5 states, 5 states have (on average 25.4) internal successors, (127), 5 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 16:14:34,155 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:14:34,155 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 50 [2024-01-27 16:14:34,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:14:37,248 INFO L124 PetriNetUnfolderBase]: 18886/28539 cut-off events. [2024-01-27 16:14:37,248 INFO L125 PetriNetUnfolderBase]: For 277453/290439 co-relation queries the response was YES. [2024-01-27 16:14:37,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 131214 conditions, 28539 events. 18886/28539 cut-off events. For 277453/290439 co-relation queries the response was YES. Maximal size of possible extension queue 1721. Compared 215574 event pairs, 2242 based on Foata normal form. 3339/30219 useless extension candidates. Maximal degree in co-relation 131169. Up to 11490 conditions per place. [2024-01-27 16:14:37,502 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 191 selfloop transitions, 10 changer transitions 0/229 dead transitions. [2024-01-27 16:14:37,503 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 229 transitions, 3243 flow [2024-01-27 16:14:37,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-27 16:14:37,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-27 16:14:37,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 180 transitions. [2024-01-27 16:14:37,508 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.72 [2024-01-27 16:14:37,508 INFO L175 Difference]: Start difference. First operand has 113 places, 126 transitions, 1407 flow. Second operand 5 states and 180 transitions. [2024-01-27 16:14:37,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 229 transitions, 3243 flow [2024-01-27 16:14:37,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 229 transitions, 3220 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-01-27 16:14:37,805 INFO L231 Difference]: Finished difference. Result has 116 places, 121 transitions, 1305 flow [2024-01-27 16:14:37,805 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1238, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1305, PETRI_PLACES=116, PETRI_TRANSITIONS=121} [2024-01-27 16:14:37,805 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 58 predicate places. [2024-01-27 16:14:37,805 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 121 transitions, 1305 flow [2024-01-27 16:14:37,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.4) internal successors, (127), 5 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 16:14:37,806 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:14:37,806 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 16:14:37,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-01-27 16:14:37,806 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-01-27 16:14:37,806 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:14:37,807 INFO L85 PathProgramCache]: Analyzing trace with hash 892561191, now seen corresponding path program 1 times [2024-01-27 16:14:37,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:14:37,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491512429] [2024-01-27 16:14:37,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:14:37,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:14:37,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:14:38,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 16:14:38,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:14:38,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491512429] [2024-01-27 16:14:38,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491512429] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:14:38,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:14:38,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-27 16:14:38,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075200342] [2024-01-27 16:14:38,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:14:38,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-27 16:14:38,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:14:38,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-27 16:14:38,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-01-27 16:14:38,097 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 50 [2024-01-27 16:14:38,098 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 121 transitions, 1305 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 16:14:38,098 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:14:38,098 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 50 [2024-01-27 16:14:38,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:14:41,685 INFO L124 PetriNetUnfolderBase]: 20146/33051 cut-off events. [2024-01-27 16:14:41,685 INFO L125 PetriNetUnfolderBase]: For 163880/171424 co-relation queries the response was YES. [2024-01-27 16:14:41,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139936 conditions, 33051 events. 20146/33051 cut-off events. For 163880/171424 co-relation queries the response was YES. Maximal size of possible extension queue 2085. Compared 286407 event pairs, 5750 based on Foata normal form. 1142/31734 useless extension candidates. Maximal degree in co-relation 139890. Up to 14581 conditions per place. [2024-01-27 16:14:42,042 INFO L140 encePairwiseOnDemand]: 42/50 looper letters, 133 selfloop transitions, 14 changer transitions 53/231 dead transitions. [2024-01-27 16:14:42,042 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 231 transitions, 2835 flow [2024-01-27 16:14:42,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-27 16:14:42,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-27 16:14:42,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 256 transitions. [2024-01-27 16:14:42,043 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.64 [2024-01-27 16:14:42,043 INFO L175 Difference]: Start difference. First operand has 116 places, 121 transitions, 1305 flow. Second operand 8 states and 256 transitions. [2024-01-27 16:14:42,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 231 transitions, 2835 flow [2024-01-27 16:14:42,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 231 transitions, 2820 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-01-27 16:14:42,556 INFO L231 Difference]: Finished difference. Result has 127 places, 116 transitions, 1280 flow [2024-01-27 16:14:42,556 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1290, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1280, PETRI_PLACES=127, PETRI_TRANSITIONS=116} [2024-01-27 16:14:42,556 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 69 predicate places. [2024-01-27 16:14:42,557 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 116 transitions, 1280 flow [2024-01-27 16:14:42,557 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 16:14:42,557 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:14:42,557 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 16:14:42,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-01-27 16:14:42,557 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-01-27 16:14:42,557 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:14:42,557 INFO L85 PathProgramCache]: Analyzing trace with hash 762292375, now seen corresponding path program 1 times [2024-01-27 16:14:42,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:14:42,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061906438] [2024-01-27 16:14:42,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:14:42,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:14:42,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:14:42,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 16:14:42,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:14:42,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061906438] [2024-01-27 16:14:42,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061906438] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:14:42,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:14:42,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 16:14:42,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696984608] [2024-01-27 16:14:42,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:14:42,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-27 16:14:42,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:14:42,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-27 16:14:42,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-01-27 16:14:42,855 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 50 [2024-01-27 16:14:42,855 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 116 transitions, 1280 flow. Second operand has 6 states, 6 states have (on average 25.166666666666668) internal successors, (151), 6 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 16:14:42,855 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:14:42,856 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 50 [2024-01-27 16:14:42,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:14:46,432 INFO L124 PetriNetUnfolderBase]: 21257/31747 cut-off events. [2024-01-27 16:14:46,432 INFO L125 PetriNetUnfolderBase]: For 434664/454259 co-relation queries the response was YES. [2024-01-27 16:14:46,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 158212 conditions, 31747 events. 21257/31747 cut-off events. For 434664/454259 co-relation queries the response was YES. Maximal size of possible extension queue 1865. Compared 238452 event pairs, 1529 based on Foata normal form. 3513/33554 useless extension candidates. Maximal degree in co-relation 158160. Up to 11179 conditions per place. [2024-01-27 16:14:46,740 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 142 selfloop transitions, 14 changer transitions 29/213 dead transitions. [2024-01-27 16:14:46,740 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 213 transitions, 2953 flow [2024-01-27 16:14:46,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-27 16:14:46,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-27 16:14:46,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 217 transitions. [2024-01-27 16:14:46,741 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7233333333333334 [2024-01-27 16:14:46,741 INFO L175 Difference]: Start difference. First operand has 127 places, 116 transitions, 1280 flow. Second operand 6 states and 217 transitions. [2024-01-27 16:14:46,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 213 transitions, 2953 flow [2024-01-27 16:14:47,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 213 transitions, 2612 flow, removed 72 selfloop flow, removed 15 redundant places. [2024-01-27 16:14:47,311 INFO L231 Difference]: Finished difference. Result has 108 places, 97 transitions, 905 flow [2024-01-27 16:14:47,311 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=874, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=905, PETRI_PLACES=108, PETRI_TRANSITIONS=97} [2024-01-27 16:14:47,311 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 50 predicate places. [2024-01-27 16:14:47,311 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 97 transitions, 905 flow [2024-01-27 16:14:47,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.166666666666668) internal successors, (151), 6 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 16:14:47,311 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:14:47,312 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] [2024-01-27 16:14:47,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-01-27 16:14:47,312 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-01-27 16:14:47,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:14:47,312 INFO L85 PathProgramCache]: Analyzing trace with hash 579533353, now seen corresponding path program 1 times [2024-01-27 16:14:47,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:14:47,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602941197] [2024-01-27 16:14:47,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:14:47,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:14:47,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:14:47,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 16:14:47,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:14:47,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602941197] [2024-01-27 16:14:47,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602941197] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:14:47,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:14:47,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-27 16:14:47,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554198344] [2024-01-27 16:14:47,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:14:47,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-27 16:14:47,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:14:47,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-27 16:14:47,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-01-27 16:14:47,474 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 50 [2024-01-27 16:14:47,475 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 97 transitions, 905 flow. Second operand has 6 states, 6 states have (on average 26.166666666666668) internal successors, (157), 6 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 16:14:47,475 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:14:47,475 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 50 [2024-01-27 16:14:47,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand