./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/popl20-figure1-alt.wvr.c --full-output --traceabstraction.positions.where.we.compute.the.hoare.annotation All --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 448d4d75 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/weaver/popl20-figure1-alt.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash fd523f7f98069bc15a8892c75be26f15a858863c31fc6ea863dcd5f92e46c458 --traceabstraction.positions.where.we.compute.the.hoare.annotation All --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.dk.owicki-witnesses-448d4d7-m [2024-02-20 12:10:41,917 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-20 12:10:41,958 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-20 12:10:41,961 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-20 12:10:41,962 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-20 12:10:41,977 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-20 12:10:41,978 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-20 12:10:41,978 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-20 12:10:41,978 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-20 12:10:41,979 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-20 12:10:41,979 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-20 12:10:41,979 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-20 12:10:41,980 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-20 12:10:41,980 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-20 12:10:41,980 INFO L153 SettingsManager]: * Use SBE=true [2024-02-20 12:10:41,980 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-20 12:10:41,981 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-20 12:10:41,981 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-20 12:10:41,981 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-20 12:10:41,981 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-20 12:10:41,982 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-20 12:10:41,982 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-20 12:10:41,982 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-20 12:10:41,983 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-20 12:10:41,983 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-20 12:10:41,983 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-20 12:10:41,983 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-20 12:10:41,984 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-20 12:10:41,984 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-20 12:10:41,984 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-20 12:10:41,985 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-20 12:10:41,985 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-20 12:10:41,985 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-20 12:10:41,985 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-20 12:10:41,986 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-20 12:10:41,986 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-20 12:10:41,986 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-20 12:10:41,986 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-20 12:10:41,986 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-20 12:10:41,987 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-20 12:10:41,987 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-20 12:10:41,987 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-20 12:10:41,987 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-20 12:10:41,988 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fd523f7f98069bc15a8892c75be26f15a858863c31fc6ea863dcd5f92e46c458 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All [2024-02-20 12:10:42,185 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-20 12:10:42,206 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-20 12:10:42,208 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-20 12:10:42,209 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-20 12:10:42,209 INFO L274 PluginConnector]: CDTParser initialized [2024-02-20 12:10:42,210 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-figure1-alt.wvr.c [2024-02-20 12:10:43,304 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-20 12:10:43,451 INFO L384 CDTParser]: Found 1 translation units. [2024-02-20 12:10:43,451 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-figure1-alt.wvr.c [2024-02-20 12:10:43,458 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/45d2b748d/43b7126860b849d694d756bb6a69333d/FLAG559265cc5 [2024-02-20 12:10:43,469 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/45d2b748d/43b7126860b849d694d756bb6a69333d [2024-02-20 12:10:43,471 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-20 12:10:43,472 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-02-20 12:10:43,474 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-20 12:10:43,474 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-20 12:10:43,478 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-20 12:10:43,479 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.02 12:10:43" (1/1) ... [2024-02-20 12:10:43,479 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a643a77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:10:43, skipping insertion in model container [2024-02-20 12:10:43,480 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.02 12:10:43" (1/1) ... [2024-02-20 12:10:43,496 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-02-20 12:10:43,627 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-figure1-alt.wvr.c[2087,2100] [2024-02-20 12:10:43,634 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-20 12:10:43,641 INFO L202 MainTranslator]: Completed pre-run [2024-02-20 12:10:43,665 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-figure1-alt.wvr.c[2087,2100] [2024-02-20 12:10:43,670 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-20 12:10:43,690 INFO L206 MainTranslator]: Completed translation [2024-02-20 12:10:43,691 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:10:43 WrapperNode [2024-02-20 12:10:43,691 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-20 12:10:43,692 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-20 12:10:43,693 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-20 12:10:43,693 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-20 12:10:43,698 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:10:43" (1/1) ... [2024-02-20 12:10:43,706 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:10:43" (1/1) ... [2024-02-20 12:10:43,728 INFO L138 Inliner]: procedures = 21, calls = 25, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 78 [2024-02-20 12:10:43,728 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-20 12:10:43,729 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-20 12:10:43,729 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-20 12:10:43,729 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-20 12:10:43,738 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:10:43" (1/1) ... [2024-02-20 12:10:43,739 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:10:43" (1/1) ... [2024-02-20 12:10:43,748 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:10:43" (1/1) ... [2024-02-20 12:10:43,768 INFO L175 MemorySlicer]: Split 6 memory accesses to 3 slices as follows [2, 2, 2]. 33 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1]. [2024-02-20 12:10:43,769 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:10:43" (1/1) ... [2024-02-20 12:10:43,769 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:10:43" (1/1) ... [2024-02-20 12:10:43,782 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:10:43" (1/1) ... [2024-02-20 12:10:43,786 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:10:43" (1/1) ... [2024-02-20 12:10:43,791 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:10:43" (1/1) ... [2024-02-20 12:10:43,793 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:10:43" (1/1) ... [2024-02-20 12:10:43,794 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-20 12:10:43,797 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-20 12:10:43,798 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-20 12:10:43,798 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-20 12:10:43,799 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:10:43" (1/1) ... [2024-02-20 12:10:43,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-20 12:10:43,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:10:43,827 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) [2024-02-20 12:10:43,847 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 [2024-02-20 12:10:43,874 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-20 12:10:43,874 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-02-20 12:10:43,874 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-02-20 12:10:43,874 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-02-20 12:10:43,874 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-02-20 12:10:43,875 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-20 12:10:43,875 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-20 12:10:43,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-20 12:10:43,876 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-20 12:10:43,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-20 12:10:43,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-20 12:10:43,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-20 12:10:43,877 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-02-20 12:10:43,877 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-02-20 12:10:43,877 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-20 12:10:43,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-20 12:10:43,878 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-02-20 12:10:43,878 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-02-20 12:10:43,878 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-02-20 12:10:43,879 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-20 12:10:43,880 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-02-20 12:10:43,986 INFO L244 CfgBuilder]: Building ICFG [2024-02-20 12:10:43,988 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-20 12:10:44,122 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-20 12:10:44,122 INFO L293 CfgBuilder]: Performing block encoding [2024-02-20 12:10:44,280 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-20 12:10:44,280 INFO L320 CfgBuilder]: Removed 2 assume(true) statements. [2024-02-20 12:10:44,280 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 12:10:44 BoogieIcfgContainer [2024-02-20 12:10:44,281 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-20 12:10:44,282 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-20 12:10:44,283 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-20 12:10:44,285 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-20 12:10:44,286 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.02 12:10:43" (1/3) ... [2024-02-20 12:10:44,286 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49d9db21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 12:10:44, skipping insertion in model container [2024-02-20 12:10:44,287 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:10:43" (2/3) ... [2024-02-20 12:10:44,287 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49d9db21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 12:10:44, skipping insertion in model container [2024-02-20 12:10:44,287 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 12:10:44" (3/3) ... [2024-02-20 12:10:44,288 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-figure1-alt.wvr.c [2024-02-20 12:10:44,304 INFO L221 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-20 12:10:44,304 INFO L180 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-02-20 12:10:44,305 INFO L635 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-20 12:10:44,348 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-02-20 12:10:44,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 28 places, 23 transitions, 60 flow [2024-02-20 12:10:44,427 INFO L124 PetriNetUnfolderBase]: 2/21 cut-off events. [2024-02-20 12:10:44,430 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-02-20 12:10:44,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30 conditions, 21 events. 2/21 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 20 event pairs, 0 based on Foata normal form. 0/18 useless extension candidates. Maximal degree in co-relation 15. Up to 2 conditions per place. [2024-02-20 12:10:44,435 INFO L82 GeneralOperation]: Start removeDead. Operand has 28 places, 23 transitions, 60 flow [2024-02-20 12:10:44,440 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 25 places, 20 transitions, 52 flow [2024-02-20 12:10:44,451 INFO L368 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-20 12:10:44,457 INFO L369 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=All, 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;@4f6f274b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-20 12:10:44,457 INFO L370 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-02-20 12:10:44,468 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-20 12:10:44,468 INFO L124 PetriNetUnfolderBase]: 2/19 cut-off events. [2024-02-20 12:10:44,469 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-02-20 12:10:44,473 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:10:44,474 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 12:10:44,474 INFO L432 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 12:10:44,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:10:44,479 INFO L85 PathProgramCache]: Analyzing trace with hash -1814008270, now seen corresponding path program 1 times [2024-02-20 12:10:44,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:10:44,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442794996] [2024-02-20 12:10:44,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:10:44,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:10:44,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:10:45,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:10:45,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:10:45,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442794996] [2024-02-20 12:10:45,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442794996] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 12:10:45,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-20 12:10:45,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-20 12:10:45,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955877627] [2024-02-20 12:10:45,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 12:10:45,218 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-20 12:10:45,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:10:45,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-20 12:10:45,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-02-20 12:10:45,267 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 23 [2024-02-20 12:10:45,271 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 20 transitions, 52 flow. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:10:45,271 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:10:45,271 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 23 [2024-02-20 12:10:45,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:10:45,437 INFO L124 PetriNetUnfolderBase]: 84/189 cut-off events. [2024-02-20 12:10:45,437 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2024-02-20 12:10:45,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 385 conditions, 189 events. 84/189 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 720 event pairs, 8 based on Foata normal form. 12/201 useless extension candidates. Maximal degree in co-relation 296. Up to 99 conditions per place. [2024-02-20 12:10:45,443 INFO L140 encePairwiseOnDemand]: 15/23 looper letters, 31 selfloop transitions, 4 changer transitions 11/49 dead transitions. [2024-02-20 12:10:45,444 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 49 transitions, 226 flow [2024-02-20 12:10:45,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-20 12:10:45,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-20 12:10:45,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 86 transitions. [2024-02-20 12:10:45,455 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5341614906832298 [2024-02-20 12:10:45,458 INFO L308 CegarLoopForPetriNet]: 25 programPoint places, 6 predicate places. [2024-02-20 12:10:45,459 INFO L507 AbstractCegarLoop]: Abstraction has has 31 places, 49 transitions, 226 flow [2024-02-20 12:10:45,459 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:10:45,459 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:10:45,460 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 12:10:45,460 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-20 12:10:45,460 INFO L432 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 12:10:45,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:10:45,461 INFO L85 PathProgramCache]: Analyzing trace with hash 2012881630, now seen corresponding path program 2 times [2024-02-20 12:10:45,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:10:45,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153980127] [2024-02-20 12:10:45,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:10:45,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:10:45,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:10:45,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:10:45,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:10:45,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153980127] [2024-02-20 12:10:45,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153980127] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 12:10:45,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-20 12:10:45,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-20 12:10:45,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448691721] [2024-02-20 12:10:45,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 12:10:45,734 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-20 12:10:45,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:10:45,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-20 12:10:45,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-02-20 12:10:45,757 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 23 [2024-02-20 12:10:45,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 49 transitions, 226 flow. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:10:45,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:10:45,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 23 [2024-02-20 12:10:45,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:10:45,892 INFO L124 PetriNetUnfolderBase]: 86/201 cut-off events. [2024-02-20 12:10:45,892 INFO L125 PetriNetUnfolderBase]: For 47/47 co-relation queries the response was YES. [2024-02-20 12:10:45,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 584 conditions, 201 events. 86/201 cut-off events. For 47/47 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 790 event pairs, 18 based on Foata normal form. 1/202 useless extension candidates. Maximal degree in co-relation 459. Up to 101 conditions per place. [2024-02-20 12:10:45,895 INFO L140 encePairwiseOnDemand]: 16/23 looper letters, 38 selfloop transitions, 11 changer transitions 20/72 dead transitions. [2024-02-20 12:10:45,895 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 72 transitions, 468 flow [2024-02-20 12:10:45,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-20 12:10:45,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-20 12:10:45,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 83 transitions. [2024-02-20 12:10:45,900 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.515527950310559 [2024-02-20 12:10:45,901 INFO L308 CegarLoopForPetriNet]: 25 programPoint places, 12 predicate places. [2024-02-20 12:10:45,901 INFO L507 AbstractCegarLoop]: Abstraction has has 37 places, 72 transitions, 468 flow [2024-02-20 12:10:45,901 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:10:45,901 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:10:45,902 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 12:10:45,902 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-02-20 12:10:45,903 INFO L432 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 12:10:45,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:10:45,905 INFO L85 PathProgramCache]: Analyzing trace with hash 2138382484, now seen corresponding path program 3 times [2024-02-20 12:10:45,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:10:45,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329734000] [2024-02-20 12:10:45,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:10:45,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:10:45,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:10:46,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:10:46,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:10:46,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329734000] [2024-02-20 12:10:46,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329734000] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 12:10:46,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-20 12:10:46,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-20 12:10:46,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128814888] [2024-02-20 12:10:46,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 12:10:46,063 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-20 12:10:46,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:10:46,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-20 12:10:46,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-02-20 12:10:46,077 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 23 [2024-02-20 12:10:46,077 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 72 transitions, 468 flow. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:10:46,077 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:10:46,077 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 23 [2024-02-20 12:10:46,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:10:46,173 INFO L124 PetriNetUnfolderBase]: 93/221 cut-off events. [2024-02-20 12:10:46,173 INFO L125 PetriNetUnfolderBase]: For 88/88 co-relation queries the response was YES. [2024-02-20 12:10:46,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 837 conditions, 221 events. 93/221 cut-off events. For 88/88 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 913 event pairs, 18 based on Foata normal form. 1/222 useless extension candidates. Maximal degree in co-relation 674. Up to 103 conditions per place. [2024-02-20 12:10:46,175 INFO L140 encePairwiseOnDemand]: 16/23 looper letters, 39 selfloop transitions, 13 changer transitions 29/84 dead transitions. [2024-02-20 12:10:46,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 84 transitions, 711 flow [2024-02-20 12:10:46,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-20 12:10:46,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-20 12:10:46,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 81 transitions. [2024-02-20 12:10:46,176 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5031055900621118 [2024-02-20 12:10:46,177 INFO L308 CegarLoopForPetriNet]: 25 programPoint places, 18 predicate places. [2024-02-20 12:10:46,177 INFO L507 AbstractCegarLoop]: Abstraction has has 43 places, 84 transitions, 711 flow [2024-02-20 12:10:46,177 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:10:46,177 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:10:46,178 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 12:10:46,178 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-02-20 12:10:46,178 INFO L432 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 12:10:46,178 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:10:46,179 INFO L85 PathProgramCache]: Analyzing trace with hash 1962616758, now seen corresponding path program 4 times [2024-02-20 12:10:46,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:10:46,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491151671] [2024-02-20 12:10:46,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:10:46,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:10:46,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:10:46,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:10:46,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:10:46,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491151671] [2024-02-20 12:10:46,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491151671] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 12:10:46,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-20 12:10:46,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-20 12:10:46,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2776943] [2024-02-20 12:10:46,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 12:10:46,339 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-20 12:10:46,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:10:46,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-20 12:10:46,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-02-20 12:10:46,350 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 23 [2024-02-20 12:10:46,351 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 84 transitions, 711 flow. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:10:46,351 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:10:46,351 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 23 [2024-02-20 12:10:46,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:10:46,440 INFO L124 PetriNetUnfolderBase]: 95/230 cut-off events. [2024-02-20 12:10:46,441 INFO L125 PetriNetUnfolderBase]: For 144/144 co-relation queries the response was YES. [2024-02-20 12:10:46,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1078 conditions, 230 events. 95/230 cut-off events. For 144/144 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 988 event pairs, 18 based on Foata normal form. 1/231 useless extension candidates. Maximal degree in co-relation 875. Up to 105 conditions per place. [2024-02-20 12:10:46,443 INFO L140 encePairwiseOnDemand]: 16/23 looper letters, 40 selfloop transitions, 14 changer transitions 34/91 dead transitions. [2024-02-20 12:10:46,443 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 91 transitions, 949 flow [2024-02-20 12:10:46,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-20 12:10:46,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-20 12:10:46,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 80 transitions. [2024-02-20 12:10:46,445 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4968944099378882 [2024-02-20 12:10:46,445 INFO L308 CegarLoopForPetriNet]: 25 programPoint places, 24 predicate places. [2024-02-20 12:10:46,446 INFO L507 AbstractCegarLoop]: Abstraction has has 49 places, 91 transitions, 949 flow [2024-02-20 12:10:46,446 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:10:46,446 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:10:46,446 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 12:10:46,446 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-02-20 12:10:46,446 INFO L432 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 12:10:46,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:10:46,447 INFO L85 PathProgramCache]: Analyzing trace with hash 1391161952, now seen corresponding path program 5 times [2024-02-20 12:10:46,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:10:46,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140685097] [2024-02-20 12:10:46,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:10:46,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:10:46,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:10:46,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:10:46,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:10:46,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140685097] [2024-02-20 12:10:46,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140685097] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 12:10:46,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-20 12:10:46,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-20 12:10:46,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204752922] [2024-02-20 12:10:46,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 12:10:46,586 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-20 12:10:46,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:10:46,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-20 12:10:46,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-02-20 12:10:46,601 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 23 [2024-02-20 12:10:46,602 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 91 transitions, 949 flow. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:10:46,602 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:10:46,602 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 23 [2024-02-20 12:10:46,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:10:46,691 INFO L124 PetriNetUnfolderBase]: 94/234 cut-off events. [2024-02-20 12:10:46,691 INFO L125 PetriNetUnfolderBase]: For 220/220 co-relation queries the response was YES. [2024-02-20 12:10:46,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1307 conditions, 234 events. 94/234 cut-off events. For 220/220 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1044 event pairs, 18 based on Foata normal form. 1/235 useless extension candidates. Maximal degree in co-relation 1062. Up to 105 conditions per place. [2024-02-20 12:10:46,694 INFO L140 encePairwiseOnDemand]: 16/23 looper letters, 38 selfloop transitions, 15 changer transitions 39/95 dead transitions. [2024-02-20 12:10:46,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 95 transitions, 1179 flow [2024-02-20 12:10:46,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-20 12:10:46,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-20 12:10:46,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 81 transitions. [2024-02-20 12:10:46,695 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5031055900621118 [2024-02-20 12:10:46,695 INFO L308 CegarLoopForPetriNet]: 25 programPoint places, 30 predicate places. [2024-02-20 12:10:46,696 INFO L507 AbstractCegarLoop]: Abstraction has has 55 places, 95 transitions, 1179 flow [2024-02-20 12:10:46,696 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:10:46,696 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:10:46,696 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 12:10:46,696 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-02-20 12:10:46,696 INFO L432 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 12:10:46,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:10:46,697 INFO L85 PathProgramCache]: Analyzing trace with hash 1566927678, now seen corresponding path program 6 times [2024-02-20 12:10:46,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:10:46,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283358491] [2024-02-20 12:10:46,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:10:46,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:10:46,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:10:46,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:10:46,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:10:46,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283358491] [2024-02-20 12:10:46,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283358491] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 12:10:46,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-20 12:10:46,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-20 12:10:46,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601780606] [2024-02-20 12:10:46,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 12:10:46,830 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-20 12:10:46,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:10:46,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-20 12:10:46,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-02-20 12:10:46,842 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 23 [2024-02-20 12:10:46,843 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 95 transitions, 1179 flow. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:10:46,843 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:10:46,843 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 23 [2024-02-20 12:10:46,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:10:46,939 INFO L124 PetriNetUnfolderBase]: 94/232 cut-off events. [2024-02-20 12:10:46,939 INFO L125 PetriNetUnfolderBase]: For 310/310 co-relation queries the response was YES. [2024-02-20 12:10:46,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1506 conditions, 232 events. 94/232 cut-off events. For 310/310 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1035 event pairs, 18 based on Foata normal form. 1/233 useless extension candidates. Maximal degree in co-relation 1233. Up to 105 conditions per place. [2024-02-20 12:10:46,941 INFO L140 encePairwiseOnDemand]: 16/23 looper letters, 30 selfloop transitions, 13 changer transitions 48/94 dead transitions. [2024-02-20 12:10:46,941 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 94 transitions, 1349 flow [2024-02-20 12:10:46,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-20 12:10:46,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-20 12:10:46,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 81 transitions. [2024-02-20 12:10:46,942 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5031055900621118 [2024-02-20 12:10:46,943 INFO L308 CegarLoopForPetriNet]: 25 programPoint places, 36 predicate places. [2024-02-20 12:10:46,943 INFO L507 AbstractCegarLoop]: Abstraction has has 61 places, 94 transitions, 1349 flow [2024-02-20 12:10:46,943 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:10:46,943 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:10:46,944 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 12:10:46,944 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-02-20 12:10:46,944 INFO L432 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 12:10:46,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:10:46,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1021308936, now seen corresponding path program 1 times [2024-02-20 12:10:46,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:10:46,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892149322] [2024-02-20 12:10:46,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:10:46,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:10:46,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:10:47,087 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:10:47,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:10:47,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892149322] [2024-02-20 12:10:47,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892149322] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:10:47,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [240708201] [2024-02-20 12:10:47,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:10:47,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:10:47,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:10:47,090 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 12:10:47,114 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-02-20 12:10:47,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:10:47,146 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 13 conjunts are in the unsatisfiable core [2024-02-20 12:10:47,150 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:10:47,303 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:10:47,303 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:10:47,433 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:10:47,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [240708201] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:10:47,433 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:10:47,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2024-02-20 12:10:47,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8132186] [2024-02-20 12:10:47,434 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:10:47,434 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-02-20 12:10:47,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:10:47,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-02-20 12:10:47,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=434, Unknown=0, NotChecked=0, Total=552 [2024-02-20 12:10:47,444 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 23 [2024-02-20 12:10:47,444 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 94 transitions, 1349 flow. Second operand has 24 states, 24 states have (on average 4.833333333333333) internal successors, (116), 24 states have internal predecessors, (116), 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) [2024-02-20 12:10:47,444 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:10:47,444 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 23 [2024-02-20 12:10:47,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:10:48,463 INFO L124 PetriNetUnfolderBase]: 430/856 cut-off events. [2024-02-20 12:10:48,464 INFO L125 PetriNetUnfolderBase]: For 4310/4310 co-relation queries the response was YES. [2024-02-20 12:10:48,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6018 conditions, 856 events. 430/856 cut-off events. For 4310/4310 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 4253 event pairs, 8 based on Foata normal form. 20/876 useless extension candidates. Maximal degree in co-relation 5330. Up to 567 conditions per place. [2024-02-20 12:10:48,471 INFO L140 encePairwiseOnDemand]: 11/23 looper letters, 161 selfloop transitions, 78 changer transitions 82/322 dead transitions. [2024-02-20 12:10:48,471 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 322 transitions, 4958 flow [2024-02-20 12:10:48,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-02-20 12:10:48,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2024-02-20 12:10:48,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 392 transitions. [2024-02-20 12:10:48,474 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.38735177865612647 [2024-02-20 12:10:48,474 INFO L308 CegarLoopForPetriNet]: 25 programPoint places, 79 predicate places. [2024-02-20 12:10:48,475 INFO L507 AbstractCegarLoop]: Abstraction has has 104 places, 322 transitions, 4958 flow [2024-02-20 12:10:48,475 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.833333333333333) internal successors, (116), 24 states have internal predecessors, (116), 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) [2024-02-20 12:10:48,475 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:10:48,475 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 12:10:48,493 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-02-20 12:10:48,687 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:10:48,688 INFO L432 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 12:10:48,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:10:48,689 INFO L85 PathProgramCache]: Analyzing trace with hash -1692677880, now seen corresponding path program 2 times [2024-02-20 12:10:48,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:10:48,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755477675] [2024-02-20 12:10:48,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:10:48,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:10:48,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:10:48,828 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:10:48,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:10:48,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755477675] [2024-02-20 12:10:48,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755477675] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:10:48,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [621949004] [2024-02-20 12:10:48,829 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-20 12:10:48,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:10:48,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:10:48,844 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 12:10:48,859 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-02-20 12:10:48,917 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-20 12:10:48,917 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:10:48,918 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 13 conjunts are in the unsatisfiable core [2024-02-20 12:10:48,919 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:10:49,065 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:10:49,065 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:10:49,214 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:10:49,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [621949004] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:10:49,215 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:10:49,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2024-02-20 12:10:49,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521332260] [2024-02-20 12:10:49,215 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:10:49,215 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-02-20 12:10:49,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:10:49,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-02-20 12:10:49,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=443, Unknown=0, NotChecked=0, Total=552 [2024-02-20 12:10:49,241 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 23 [2024-02-20 12:10:49,241 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 322 transitions, 4958 flow. Second operand has 24 states, 24 states have (on average 4.833333333333333) internal successors, (116), 24 states have internal predecessors, (116), 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) [2024-02-20 12:10:49,241 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:10:49,242 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 23 [2024-02-20 12:10:49,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:10:50,178 INFO L124 PetriNetUnfolderBase]: 553/1102 cut-off events. [2024-02-20 12:10:50,178 INFO L125 PetriNetUnfolderBase]: For 5371/5371 co-relation queries the response was YES. [2024-02-20 12:10:50,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8849 conditions, 1102 events. 553/1102 cut-off events. For 5371/5371 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 5960 event pairs, 16 based on Foata normal form. 2/1104 useless extension candidates. Maximal degree in co-relation 8036. Up to 765 conditions per place. [2024-02-20 12:10:50,188 INFO L140 encePairwiseOnDemand]: 11/23 looper letters, 231 selfloop transitions, 119 changer transitions 102/453 dead transitions. [2024-02-20 12:10:50,188 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 453 transitions, 7796 flow [2024-02-20 12:10:50,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-02-20 12:10:50,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2024-02-20 12:10:50,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 320 transitions. [2024-02-20 12:10:50,190 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.36613272311212813 [2024-02-20 12:10:50,190 INFO L308 CegarLoopForPetriNet]: 25 programPoint places, 116 predicate places. [2024-02-20 12:10:50,190 INFO L507 AbstractCegarLoop]: Abstraction has has 141 places, 453 transitions, 7796 flow [2024-02-20 12:10:50,191 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.833333333333333) internal successors, (116), 24 states have internal predecessors, (116), 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) [2024-02-20 12:10:50,191 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:10:50,191 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 12:10:50,204 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-02-20 12:10:50,404 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-02-20 12:10:50,404 INFO L432 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 12:10:50,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:10:50,405 INFO L85 PathProgramCache]: Analyzing trace with hash -708333044, now seen corresponding path program 3 times [2024-02-20 12:10:50,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:10:50,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620711371] [2024-02-20 12:10:50,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:10:50,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:10:50,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:10:50,564 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:10:50,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:10:50,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620711371] [2024-02-20 12:10:50,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620711371] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:10:50,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1123746434] [2024-02-20 12:10:50,569 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-02-20 12:10:50,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:10:50,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:10:50,571 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 12:10:50,572 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-02-20 12:10:50,620 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-02-20 12:10:50,620 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:10:50,621 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 13 conjunts are in the unsatisfiable core [2024-02-20 12:10:50,623 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:10:50,779 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:10:50,779 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:10:50,949 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:10:50,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1123746434] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:10:50,950 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:10:50,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2024-02-20 12:10:50,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655175156] [2024-02-20 12:10:50,952 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:10:50,952 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-02-20 12:10:50,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:10:50,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-02-20 12:10:50,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=436, Unknown=0, NotChecked=0, Total=552 [2024-02-20 12:10:50,966 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 23 [2024-02-20 12:10:50,967 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 453 transitions, 7796 flow. Second operand has 24 states, 24 states have (on average 4.833333333333333) internal successors, (116), 24 states have internal predecessors, (116), 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) [2024-02-20 12:10:50,967 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:10:50,967 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 23 [2024-02-20 12:10:50,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:10:52,969 INFO L124 PetriNetUnfolderBase]: 857/1698 cut-off events. [2024-02-20 12:10:52,969 INFO L125 PetriNetUnfolderBase]: For 7114/7114 co-relation queries the response was YES. [2024-02-20 12:10:52,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15216 conditions, 1698 events. 857/1698 cut-off events. For 7114/7114 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 10103 event pairs, 8 based on Foata normal form. 2/1700 useless extension candidates. Maximal degree in co-relation 14117. Up to 1242 conditions per place. [2024-02-20 12:10:52,986 INFO L140 encePairwiseOnDemand]: 11/23 looper letters, 369 selfloop transitions, 247 changer transitions 134/751 dead transitions. [2024-02-20 12:10:52,986 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 751 transitions, 14213 flow [2024-02-20 12:10:52,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2024-02-20 12:10:52,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2024-02-20 12:10:52,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 584 transitions. [2024-02-20 12:10:52,991 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.3627329192546584 [2024-02-20 12:10:52,992 INFO L308 CegarLoopForPetriNet]: 25 programPoint places, 185 predicate places. [2024-02-20 12:10:52,993 INFO L507 AbstractCegarLoop]: Abstraction has has 210 places, 751 transitions, 14213 flow [2024-02-20 12:10:52,993 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.833333333333333) internal successors, (116), 24 states have internal predecessors, (116), 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) [2024-02-20 12:10:52,993 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:10:52,993 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 12:10:53,009 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-02-20 12:10:53,206 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:10:53,207 INFO L432 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 12:10:53,208 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:10:53,208 INFO L85 PathProgramCache]: Analyzing trace with hash -532567318, now seen corresponding path program 4 times [2024-02-20 12:10:53,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:10:53,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551484305] [2024-02-20 12:10:53,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:10:53,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:10:53,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:10:53,396 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:10:53,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:10:53,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551484305] [2024-02-20 12:10:53,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551484305] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:10:53,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [321517243] [2024-02-20 12:10:53,397 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-02-20 12:10:53,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:10:53,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:10:53,398 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 12:10:53,421 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-02-20 12:10:53,450 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-02-20 12:10:53,450 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:10:53,451 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 13 conjunts are in the unsatisfiable core [2024-02-20 12:10:53,452 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:10:53,614 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:10:53,614 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:10:53,762 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:10:53,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [321517243] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:10:53,762 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:10:53,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2024-02-20 12:10:53,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869511910] [2024-02-20 12:10:53,763 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:10:53,764 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-02-20 12:10:53,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:10:53,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-02-20 12:10:53,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2024-02-20 12:10:53,780 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 23 [2024-02-20 12:10:53,780 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 751 transitions, 14213 flow. Second operand has 24 states, 24 states have (on average 4.916666666666667) internal successors, (118), 24 states have internal predecessors, (118), 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) [2024-02-20 12:10:53,780 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:10:53,780 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 23 [2024-02-20 12:10:53,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:10:55,902 INFO L124 PetriNetUnfolderBase]: 1147/2219 cut-off events. [2024-02-20 12:10:55,902 INFO L125 PetriNetUnfolderBase]: For 9631/9631 co-relation queries the response was YES. [2024-02-20 12:10:55,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22121 conditions, 2219 events. 1147/2219 cut-off events. For 9631/9631 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 13578 event pairs, 12 based on Foata normal form. 2/2221 useless extension candidates. Maximal degree in co-relation 20666. Up to 1675 conditions per place. [2024-02-20 12:10:56,007 INFO L140 encePairwiseOnDemand]: 10/23 looper letters, 480 selfloop transitions, 350 changer transitions 149/980 dead transitions. [2024-02-20 12:10:56,007 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 980 transitions, 20418 flow [2024-02-20 12:10:56,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2024-02-20 12:10:56,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2024-02-20 12:10:56,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 619 transitions. [2024-02-20 12:10:56,014 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.37905695039804044 [2024-02-20 12:10:56,015 INFO L308 CegarLoopForPetriNet]: 25 programPoint places, 253 predicate places. [2024-02-20 12:10:56,015 INFO L507 AbstractCegarLoop]: Abstraction has has 278 places, 980 transitions, 20418 flow [2024-02-20 12:10:56,016 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.916666666666667) internal successors, (118), 24 states have internal predecessors, (118), 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) [2024-02-20 12:10:56,016 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:10:56,016 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 12:10:56,044 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-02-20 12:10:56,228 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:10:56,228 INFO L432 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 12:10:56,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:10:56,229 INFO L85 PathProgramCache]: Analyzing trace with hash 213046732, now seen corresponding path program 5 times [2024-02-20 12:10:56,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:10:56,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269206856] [2024-02-20 12:10:56,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:10:56,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:10:56,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:10:56,358 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:10:56,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:10:56,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269206856] [2024-02-20 12:10:56,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269206856] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:10:56,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1377152103] [2024-02-20 12:10:56,362 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-02-20 12:10:56,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:10:56,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:10:56,377 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 12:10:56,417 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-02-20 12:10:56,461 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-20 12:10:56,461 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:10:56,462 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 13 conjunts are in the unsatisfiable core [2024-02-20 12:10:56,463 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:10:56,595 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:10:56,595 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:10:56,721 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:10:56,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1377152103] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:10:56,722 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:10:56,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2024-02-20 12:10:56,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183137938] [2024-02-20 12:10:56,722 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:10:56,722 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-02-20 12:10:56,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:10:56,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-02-20 12:10:56,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=419, Unknown=0, NotChecked=0, Total=552 [2024-02-20 12:10:56,732 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 23 [2024-02-20 12:10:56,733 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 980 transitions, 20418 flow. Second operand has 24 states, 24 states have (on average 4.833333333333333) internal successors, (116), 24 states have internal predecessors, (116), 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) [2024-02-20 12:10:56,733 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:10:56,733 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 23 [2024-02-20 12:10:56,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:10:57,502 INFO L124 PetriNetUnfolderBase]: 1161/2259 cut-off events. [2024-02-20 12:10:57,503 INFO L125 PetriNetUnfolderBase]: For 9941/9941 co-relation queries the response was YES. [2024-02-20 12:10:57,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24772 conditions, 2259 events. 1161/2259 cut-off events. For 9941/9941 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 13978 event pairs, 12 based on Foata normal form. 2/2261 useless extension candidates. Maximal degree in co-relation 23162. Up to 1704 conditions per place. [2024-02-20 12:10:57,527 INFO L140 encePairwiseOnDemand]: 12/23 looper letters, 597 selfloop transitions, 253 changer transitions 159/1010 dead transitions. [2024-02-20 12:10:57,527 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 1010 transitions, 23048 flow [2024-02-20 12:10:57,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-02-20 12:10:57,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-02-20 12:10:57,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 158 transitions. [2024-02-20 12:10:57,529 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.36155606407322655 [2024-02-20 12:10:57,530 INFO L308 CegarLoopForPetriNet]: 25 programPoint places, 271 predicate places. [2024-02-20 12:10:57,530 INFO L507 AbstractCegarLoop]: Abstraction has has 296 places, 1010 transitions, 23048 flow [2024-02-20 12:10:57,531 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.833333333333333) internal successors, (116), 24 states have internal predecessors, (116), 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) [2024-02-20 12:10:57,531 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:10:57,531 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 12:10:57,552 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-02-20 12:10:57,743 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-02-20 12:10:57,744 INFO L432 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 12:10:57,744 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:10:57,745 INFO L85 PathProgramCache]: Analyzing trace with hash -818026232, now seen corresponding path program 6 times [2024-02-20 12:10:57,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:10:57,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386996941] [2024-02-20 12:10:57,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:10:57,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:10:57,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:10:57,879 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:10:57,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:10:57,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386996941] [2024-02-20 12:10:57,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386996941] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:10:57,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1610889441] [2024-02-20 12:10:57,880 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-02-20 12:10:57,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:10:57,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:10:57,885 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 12:10:57,909 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-02-20 12:10:57,940 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-02-20 12:10:57,940 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:10:57,941 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 13 conjunts are in the unsatisfiable core [2024-02-20 12:10:57,942 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:10:58,098 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:10:58,099 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:10:58,228 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:10:58,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1610889441] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:10:58,228 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:10:58,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2024-02-20 12:10:58,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709918813] [2024-02-20 12:10:58,229 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:10:58,229 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-02-20 12:10:58,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:10:58,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-02-20 12:10:58,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=464, Unknown=0, NotChecked=0, Total=600 [2024-02-20 12:10:58,243 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 23 [2024-02-20 12:10:58,243 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 1010 transitions, 23048 flow. Second operand has 25 states, 25 states have (on average 4.76) internal successors, (119), 25 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:10:58,243 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:10:58,243 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 23 [2024-02-20 12:10:58,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:10:59,170 INFO L124 PetriNetUnfolderBase]: 1186/2366 cut-off events. [2024-02-20 12:10:59,171 INFO L125 PetriNetUnfolderBase]: For 10086/10086 co-relation queries the response was YES. [2024-02-20 12:10:59,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28401 conditions, 2366 events. 1186/2366 cut-off events. For 10086/10086 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 15141 event pairs, 12 based on Foata normal form. 2/2368 useless extension candidates. Maximal degree in co-relation 26632. Up to 1800 conditions per place. [2024-02-20 12:10:59,199 INFO L140 encePairwiseOnDemand]: 12/23 looper letters, 636 selfloop transitions, 258 changer transitions 190/1085 dead transitions. [2024-02-20 12:10:59,200 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 1085 transitions, 27049 flow [2024-02-20 12:10:59,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-02-20 12:10:59,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-02-20 12:10:59,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 178 transitions. [2024-02-20 12:10:59,204 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.35177865612648224 [2024-02-20 12:10:59,205 INFO L308 CegarLoopForPetriNet]: 25 programPoint places, 292 predicate places. [2024-02-20 12:10:59,205 INFO L507 AbstractCegarLoop]: Abstraction has has 317 places, 1085 transitions, 27049 flow [2024-02-20 12:10:59,205 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.76) internal successors, (119), 25 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:10:59,206 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:10:59,206 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 12:10:59,220 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-02-20 12:10:59,414 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:10:59,415 INFO L432 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 12:10:59,416 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:10:59,416 INFO L85 PathProgramCache]: Analyzing trace with hash -1893737388, now seen corresponding path program 7 times [2024-02-20 12:10:59,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:10:59,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383913775] [2024-02-20 12:10:59,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:10:59,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:10:59,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:10:59,551 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:10:59,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:10:59,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383913775] [2024-02-20 12:10:59,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383913775] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:10:59,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1540476993] [2024-02-20 12:10:59,552 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-02-20 12:10:59,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:10:59,552 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:10:59,569 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 12:10:59,591 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-02-20 12:10:59,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:10:59,620 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 13 conjunts are in the unsatisfiable core [2024-02-20 12:10:59,622 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:10:59,778 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:10:59,778 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:10:59,916 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:10:59,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1540476993] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:10:59,916 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:10:59,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2024-02-20 12:10:59,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453878449] [2024-02-20 12:10:59,917 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:10:59,917 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-02-20 12:10:59,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:10:59,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-02-20 12:10:59,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=462, Unknown=0, NotChecked=0, Total=600 [2024-02-20 12:10:59,926 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 23 [2024-02-20 12:10:59,926 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 1085 transitions, 27049 flow. Second operand has 25 states, 25 states have (on average 4.76) internal successors, (119), 25 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:10:59,927 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:10:59,927 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 23 [2024-02-20 12:10:59,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:11:00,945 INFO L124 PetriNetUnfolderBase]: 1202/2408 cut-off events. [2024-02-20 12:11:00,945 INFO L125 PetriNetUnfolderBase]: For 10250/10250 co-relation queries the response was YES. [2024-02-20 12:11:00,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31307 conditions, 2408 events. 1202/2408 cut-off events. For 10250/10250 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 15610 event pairs, 8 based on Foata normal form. 2/2410 useless extension candidates. Maximal degree in co-relation 29375. Up to 1836 conditions per place. [2024-02-20 12:11:00,974 INFO L140 encePairwiseOnDemand]: 12/23 looper letters, 643 selfloop transitions, 270 changer transitions 200/1114 dead transitions. [2024-02-20 12:11:00,974 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 1114 transitions, 30005 flow [2024-02-20 12:11:00,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-02-20 12:11:00,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-02-20 12:11:00,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 204 transitions. [2024-02-20 12:11:00,976 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.3411371237458194 [2024-02-20 12:11:00,976 INFO L308 CegarLoopForPetriNet]: 25 programPoint places, 317 predicate places. [2024-02-20 12:11:00,976 INFO L507 AbstractCegarLoop]: Abstraction has has 342 places, 1114 transitions, 30005 flow [2024-02-20 12:11:00,976 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.76) internal successors, (119), 25 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:11:00,976 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:11:00,977 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 12:11:00,992 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-02-20 12:11:01,189 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:11:01,190 INFO L432 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 12:11:01,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:11:01,190 INFO L85 PathProgramCache]: Analyzing trace with hash 222209566, now seen corresponding path program 8 times [2024-02-20 12:11:01,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:11:01,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715210586] [2024-02-20 12:11:01,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:11:01,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:11:01,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:11:01,335 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:11:01,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:11:01,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715210586] [2024-02-20 12:11:01,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715210586] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:11:01,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1098602675] [2024-02-20 12:11:01,336 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-20 12:11:01,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:11:01,337 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:11:01,338 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 12:11:01,363 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-02-20 12:11:01,390 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-20 12:11:01,390 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:11:01,391 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 13 conjunts are in the unsatisfiable core [2024-02-20 12:11:01,393 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:11:01,554 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:11:01,554 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:11:01,683 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:11:01,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1098602675] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:11:01,684 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:11:01,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2024-02-20 12:11:01,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445211305] [2024-02-20 12:11:01,684 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:11:01,684 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-02-20 12:11:01,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:11:01,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-02-20 12:11:01,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=475, Unknown=0, NotChecked=0, Total=600 [2024-02-20 12:11:01,703 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 23 [2024-02-20 12:11:01,704 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 1114 transitions, 30005 flow. Second operand has 25 states, 25 states have (on average 4.76) internal successors, (119), 25 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:11:01,704 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:11:01,704 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 23 [2024-02-20 12:11:01,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:11:02,884 INFO L124 PetriNetUnfolderBase]: 1210/2438 cut-off events. [2024-02-20 12:11:02,884 INFO L125 PetriNetUnfolderBase]: For 10305/10305 co-relation queries the response was YES. [2024-02-20 12:11:02,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34129 conditions, 2438 events. 1210/2438 cut-off events. For 10305/10305 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 15911 event pairs, 8 based on Foata normal form. 2/2440 useless extension candidates. Maximal degree in co-relation 32030. Up to 1861 conditions per place. [2024-02-20 12:11:02,909 INFO L140 encePairwiseOnDemand]: 12/23 looper letters, 628 selfloop transitions, 300 changer transitions 210/1139 dead transitions. [2024-02-20 12:11:02,909 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 1139 transitions, 32933 flow [2024-02-20 12:11:02,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-02-20 12:11:02,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-02-20 12:11:02,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 219 transitions. [2024-02-20 12:11:02,910 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.34006211180124224 [2024-02-20 12:11:02,911 INFO L308 CegarLoopForPetriNet]: 25 programPoint places, 344 predicate places. [2024-02-20 12:11:02,911 INFO L507 AbstractCegarLoop]: Abstraction has has 369 places, 1139 transitions, 32933 flow [2024-02-20 12:11:02,911 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.76) internal successors, (119), 25 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:11:02,911 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:11:02,911 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 12:11:02,944 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-02-20 12:11:03,123 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-02-20 12:11:03,123 INFO L432 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 12:11:03,124 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:11:03,124 INFO L85 PathProgramCache]: Analyzing trace with hash -853501590, now seen corresponding path program 9 times [2024-02-20 12:11:03,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:11:03,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286426161] [2024-02-20 12:11:03,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:11:03,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:11:03,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:11:03,263 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:11:03,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:11:03,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286426161] [2024-02-20 12:11:03,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286426161] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:11:03,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2038164428] [2024-02-20 12:11:03,264 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-02-20 12:11:03,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:11:03,265 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:11:03,341 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 12:11:03,363 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-02-20 12:11:03,397 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-02-20 12:11:03,397 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:11:03,398 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 13 conjunts are in the unsatisfiable core [2024-02-20 12:11:03,399 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:11:03,555 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:11:03,556 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:11:03,678 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:11:03,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2038164428] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:11:03,679 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:11:03,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2024-02-20 12:11:03,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457011535] [2024-02-20 12:11:03,679 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:11:03,680 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-02-20 12:11:03,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:11:03,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-02-20 12:11:03,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=470, Unknown=0, NotChecked=0, Total=600 [2024-02-20 12:11:03,690 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 23 [2024-02-20 12:11:03,691 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 1139 transitions, 32933 flow. Second operand has 25 states, 25 states have (on average 4.76) internal successors, (119), 25 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:11:03,691 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:11:03,691 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 23 [2024-02-20 12:11:03,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:11:04,862 INFO L124 PetriNetUnfolderBase]: 1215/2456 cut-off events. [2024-02-20 12:11:04,862 INFO L125 PetriNetUnfolderBase]: For 10356/10356 co-relation queries the response was YES. [2024-02-20 12:11:04,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36829 conditions, 2456 events. 1215/2456 cut-off events. For 10356/10356 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 16105 event pairs, 12 based on Foata normal form. 1/2457 useless extension candidates. Maximal degree in co-relation 34576. Up to 1877 conditions per place. [2024-02-20 12:11:04,889 INFO L140 encePairwiseOnDemand]: 12/23 looper letters, 639 selfloop transitions, 297 changer transitions 215/1152 dead transitions. [2024-02-20 12:11:04,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 1152 transitions, 35619 flow [2024-02-20 12:11:04,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-02-20 12:11:04,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-02-20 12:11:04,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 216 transitions. [2024-02-20 12:11:04,891 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.33540372670807456 [2024-02-20 12:11:04,891 INFO L308 CegarLoopForPetriNet]: 25 programPoint places, 371 predicate places. [2024-02-20 12:11:04,891 INFO L507 AbstractCegarLoop]: Abstraction has has 396 places, 1152 transitions, 35619 flow [2024-02-20 12:11:04,892 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.76) internal successors, (119), 25 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:11:04,892 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:11:04,892 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 12:11:04,924 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-02-20 12:11:05,105 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-02-20 12:11:05,105 INFO L432 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 12:11:05,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:11:05,106 INFO L85 PathProgramCache]: Analyzing trace with hash 1904046476, now seen corresponding path program 10 times [2024-02-20 12:11:05,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:11:05,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464895718] [2024-02-20 12:11:05,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:11:05,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:11:05,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:11:05,229 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:11:05,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:11:05,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464895718] [2024-02-20 12:11:05,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464895718] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:11:05,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [460962527] [2024-02-20 12:11:05,229 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-02-20 12:11:05,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:11:05,230 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:11:05,231 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 12:11:05,256 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-02-20 12:11:05,285 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-02-20 12:11:05,286 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:11:05,287 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 13 conjunts are in the unsatisfiable core [2024-02-20 12:11:05,288 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:11:05,486 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:11:05,486 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:11:05,606 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:11:05,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [460962527] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:11:05,606 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:11:05,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2024-02-20 12:11:05,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458343984] [2024-02-20 12:11:05,607 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:11:05,607 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-02-20 12:11:05,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:11:05,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-02-20 12:11:05,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=471, Unknown=0, NotChecked=0, Total=600 [2024-02-20 12:11:05,621 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 23 [2024-02-20 12:11:05,621 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 1152 transitions, 35619 flow. Second operand has 25 states, 25 states have (on average 4.76) internal successors, (119), 25 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:11:05,621 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:11:05,621 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 23 [2024-02-20 12:11:05,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:11:06,643 INFO L124 PetriNetUnfolderBase]: 1221/2480 cut-off events. [2024-02-20 12:11:06,644 INFO L125 PetriNetUnfolderBase]: For 10411/10411 co-relation queries the response was YES. [2024-02-20 12:11:06,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39657 conditions, 2480 events. 1221/2480 cut-off events. For 10411/10411 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 16395 event pairs, 12 based on Foata normal form. 2/2482 useless extension candidates. Maximal degree in co-relation 37230. Up to 1897 conditions per place. [2024-02-20 12:11:06,672 INFO L140 encePairwiseOnDemand]: 12/23 looper letters, 671 selfloop transitions, 275 changer transitions 225/1172 dead transitions. [2024-02-20 12:11:06,673 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 415 places, 1172 transitions, 38589 flow [2024-02-20 12:11:06,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-02-20 12:11:06,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-02-20 12:11:06,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 163 transitions. [2024-02-20 12:11:06,674 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.35434782608695653 [2024-02-20 12:11:06,674 INFO L308 CegarLoopForPetriNet]: 25 programPoint places, 390 predicate places. [2024-02-20 12:11:06,674 INFO L507 AbstractCegarLoop]: Abstraction has has 415 places, 1172 transitions, 38589 flow [2024-02-20 12:11:06,674 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.76) internal successors, (119), 25 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:11:06,674 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:11:06,675 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 12:11:06,689 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-02-20 12:11:06,886 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-02-20 12:11:06,886 INFO L432 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 12:11:06,886 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:11:06,887 INFO L85 PathProgramCache]: Analyzing trace with hash 462655714, now seen corresponding path program 11 times [2024-02-20 12:11:06,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:11:06,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044502248] [2024-02-20 12:11:06,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:11:06,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:11:06,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:11:07,022 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:11:07,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:11:07,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044502248] [2024-02-20 12:11:07,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044502248] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:11:07,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1902849676] [2024-02-20 12:11:07,023 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-02-20 12:11:07,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:11:07,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:11:07,028 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 12:11:07,052 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-02-20 12:11:07,117 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-20 12:11:07,118 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:11:07,118 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 13 conjunts are in the unsatisfiable core [2024-02-20 12:11:07,119 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:11:07,261 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:11:07,262 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:11:07,437 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:11:07,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1902849676] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:11:07,438 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:11:07,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2024-02-20 12:11:07,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308055469] [2024-02-20 12:11:07,438 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:11:07,438 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-02-20 12:11:07,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:11:07,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-02-20 12:11:07,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=483, Unknown=0, NotChecked=0, Total=600 [2024-02-20 12:11:07,451 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 23 [2024-02-20 12:11:07,451 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 415 places, 1172 transitions, 38589 flow. Second operand has 25 states, 25 states have (on average 4.76) internal successors, (119), 25 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:11:07,451 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:11:07,451 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 23 [2024-02-20 12:11:07,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:11:09,326 INFO L124 PetriNetUnfolderBase]: 1322/2682 cut-off events. [2024-02-20 12:11:09,326 INFO L125 PetriNetUnfolderBase]: For 10740/10740 co-relation queries the response was YES. [2024-02-20 12:11:09,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45676 conditions, 2682 events. 1322/2682 cut-off events. For 10740/10740 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 18160 event pairs, 8 based on Foata normal form. 3/2685 useless extension candidates. Maximal degree in co-relation 43052. Up to 2083 conditions per place. [2024-02-20 12:11:09,368 INFO L140 encePairwiseOnDemand]: 11/23 looper letters, 685 selfloop transitions, 380 changer transitions 240/1306 dead transitions. [2024-02-20 12:11:09,368 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 462 places, 1306 transitions, 45683 flow [2024-02-20 12:11:09,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-02-20 12:11:09,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2024-02-20 12:11:09,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 376 transitions. [2024-02-20 12:11:09,378 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.34057971014492755 [2024-02-20 12:11:09,378 INFO L308 CegarLoopForPetriNet]: 25 programPoint places, 437 predicate places. [2024-02-20 12:11:09,378 INFO L507 AbstractCegarLoop]: Abstraction has has 462 places, 1306 transitions, 45683 flow [2024-02-20 12:11:09,378 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.76) internal successors, (119), 25 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:11:09,378 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:11:09,378 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 12:11:09,391 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-02-20 12:11:09,591 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-02-20 12:11:09,591 INFO L432 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 12:11:09,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:11:09,591 INFO L85 PathProgramCache]: Analyzing trace with hash -2103264248, now seen corresponding path program 12 times [2024-02-20 12:11:09,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:11:09,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40874414] [2024-02-20 12:11:09,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:11:09,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:11:09,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:11:09,720 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:11:09,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:11:09,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40874414] [2024-02-20 12:11:09,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40874414] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:11:09,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1281903606] [2024-02-20 12:11:09,720 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-02-20 12:11:09,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:11:09,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:11:09,737 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 12:11:09,782 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-02-20 12:11:09,826 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-02-20 12:11:09,826 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:11:09,827 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 13 conjunts are in the unsatisfiable core [2024-02-20 12:11:09,828 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:11:09,993 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:11:09,993 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:11:10,132 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:11:10,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1281903606] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:11:10,132 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:11:10,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2024-02-20 12:11:10,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930711061] [2024-02-20 12:11:10,133 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:11:10,133 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-02-20 12:11:10,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:11:10,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-02-20 12:11:10,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=481, Unknown=0, NotChecked=0, Total=600 [2024-02-20 12:11:10,151 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 23 [2024-02-20 12:11:10,151 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 462 places, 1306 transitions, 45683 flow. Second operand has 25 states, 25 states have (on average 4.76) internal successors, (119), 25 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:11:10,151 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:11:10,151 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 23 [2024-02-20 12:11:10,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:11:12,774 INFO L124 PetriNetUnfolderBase]: 1439/2925 cut-off events. [2024-02-20 12:11:12,775 INFO L125 PetriNetUnfolderBase]: For 10984/10984 co-relation queries the response was YES. [2024-02-20 12:11:12,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52703 conditions, 2925 events. 1439/2925 cut-off events. For 10984/10984 co-relation queries the response was YES. Maximal size of possible extension queue 225. Compared 20222 event pairs, 0 based on Foata normal form. 3/2928 useless extension candidates. Maximal degree in co-relation 49756. Up to 2285 conditions per place. [2024-02-20 12:11:12,810 INFO L140 encePairwiseOnDemand]: 11/23 looper letters, 737 selfloop transitions, 481 changer transitions 257/1476 dead transitions. [2024-02-20 12:11:12,811 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 529 places, 1476 transitions, 54627 flow [2024-02-20 12:11:12,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2024-02-20 12:11:12,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2024-02-20 12:11:12,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 529 transitions. [2024-02-20 12:11:12,812 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.3382352941176471 [2024-02-20 12:11:12,813 INFO L308 CegarLoopForPetriNet]: 25 programPoint places, 504 predicate places. [2024-02-20 12:11:12,813 INFO L507 AbstractCegarLoop]: Abstraction has has 529 places, 1476 transitions, 54627 flow [2024-02-20 12:11:12,813 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.76) internal successors, (119), 25 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:11:12,813 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:11:12,813 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 12:11:12,828 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-02-20 12:11:13,018 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-02-20 12:11:13,018 INFO L432 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 12:11:13,018 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:11:13,018 INFO L85 PathProgramCache]: Analyzing trace with hash -1927498522, now seen corresponding path program 13 times [2024-02-20 12:11:13,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:11:13,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951697084] [2024-02-20 12:11:13,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:11:13,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:11:13,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:11:13,234 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:11:13,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:11:13,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951697084] [2024-02-20 12:11:13,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951697084] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:11:13,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1723810895] [2024-02-20 12:11:13,235 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-02-20 12:11:13,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:11:13,235 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:11:13,236 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 12:11:13,260 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-02-20 12:11:13,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:11:13,312 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 13 conjunts are in the unsatisfiable core [2024-02-20 12:11:13,312 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:11:13,483 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:11:13,483 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:11:13,647 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:11:13,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1723810895] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:11:13,647 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:11:13,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2024-02-20 12:11:13,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028417723] [2024-02-20 12:11:13,648 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:11:13,648 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-02-20 12:11:13,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:11:13,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-02-20 12:11:13,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=483, Unknown=0, NotChecked=0, Total=600 [2024-02-20 12:11:13,663 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 23 [2024-02-20 12:11:13,663 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 529 places, 1476 transitions, 54627 flow. Second operand has 25 states, 25 states have (on average 4.84) internal successors, (121), 25 states have internal predecessors, (121), 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) [2024-02-20 12:11:13,663 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:11:13,663 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 23 [2024-02-20 12:11:13,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:11:16,016 INFO L124 PetriNetUnfolderBase]: 1695/3372 cut-off events. [2024-02-20 12:11:16,016 INFO L125 PetriNetUnfolderBase]: For 12569/12569 co-relation queries the response was YES. [2024-02-20 12:11:16,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64232 conditions, 3372 events. 1695/3372 cut-off events. For 12569/12569 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 23497 event pairs, 26 based on Foata normal form. 4/3376 useless extension candidates. Maximal degree in co-relation 60991. Up to 2670 conditions per place. [2024-02-20 12:11:16,060 INFO L140 encePairwiseOnDemand]: 10/23 looper letters, 915 selfloop transitions, 531 changer transitions 282/1729 dead transitions. [2024-02-20 12:11:16,061 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 577 places, 1729 transitions, 67448 flow [2024-02-20 12:11:16,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2024-02-20 12:11:16,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2024-02-20 12:11:16,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 470 transitions. [2024-02-20 12:11:16,063 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.3784219001610306 [2024-02-20 12:11:16,064 INFO L308 CegarLoopForPetriNet]: 25 programPoint places, 552 predicate places. [2024-02-20 12:11:16,064 INFO L507 AbstractCegarLoop]: Abstraction has has 577 places, 1729 transitions, 67448 flow [2024-02-20 12:11:16,064 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.84) internal successors, (121), 25 states have internal predecessors, (121), 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) [2024-02-20 12:11:16,064 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:11:16,064 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 12:11:16,076 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-02-20 12:11:16,276 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:11:16,277 INFO L432 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 12:11:16,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:11:16,277 INFO L85 PathProgramCache]: Analyzing trace with hash -323702855, now seen corresponding path program 1 times [2024-02-20 12:11:16,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:11:16,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420286284] [2024-02-20 12:11:16,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:11:16,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:11:16,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:11:16,485 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:11:16,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:11:16,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420286284] [2024-02-20 12:11:16,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420286284] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:11:16,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [103837143] [2024-02-20 12:11:16,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:11:16,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:11:16,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:11:16,487 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 12:11:16,490 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-02-20 12:11:16,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:11:16,568 INFO L262 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 17 conjunts are in the unsatisfiable core [2024-02-20 12:11:16,568 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:11:16,694 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:11:16,694 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:11:16,833 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:11:16,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [103837143] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:11:16,834 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:11:16,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 29 [2024-02-20 12:11:16,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444652516] [2024-02-20 12:11:16,834 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:11:16,834 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-02-20 12:11:16,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:11:16,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-02-20 12:11:16,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=739, Unknown=0, NotChecked=0, Total=870 [2024-02-20 12:11:16,847 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 23 [2024-02-20 12:11:16,848 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 577 places, 1729 transitions, 67448 flow. Second operand has 30 states, 30 states have (on average 4.433333333333334) internal successors, (133), 30 states have internal predecessors, (133), 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) [2024-02-20 12:11:16,848 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:11:16,848 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 23 [2024-02-20 12:11:16,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:11:19,559 INFO L124 PetriNetUnfolderBase]: 1782/3526 cut-off events. [2024-02-20 12:11:19,559 INFO L125 PetriNetUnfolderBase]: For 13492/13492 co-relation queries the response was YES. [2024-02-20 12:11:19,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70750 conditions, 3526 events. 1782/3526 cut-off events. For 13492/13492 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 24574 event pairs, 18 based on Foata normal form. 2/3528 useless extension candidates. Maximal degree in co-relation 67350. Up to 2809 conditions per place. [2024-02-20 12:11:19,599 INFO L140 encePairwiseOnDemand]: 11/23 looper letters, 991 selfloop transitions, 512 changer transitions 320/1824 dead transitions. [2024-02-20 12:11:19,600 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 626 places, 1824 transitions, 74795 flow [2024-02-20 12:11:19,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2024-02-20 12:11:19,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2024-02-20 12:11:19,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 428 transitions. [2024-02-20 12:11:19,601 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.37217391304347824 [2024-02-20 12:11:19,601 INFO L308 CegarLoopForPetriNet]: 25 programPoint places, 601 predicate places. [2024-02-20 12:11:19,602 INFO L507 AbstractCegarLoop]: Abstraction has has 626 places, 1824 transitions, 74795 flow [2024-02-20 12:11:19,602 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 4.433333333333334) internal successors, (133), 30 states have internal predecessors, (133), 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) [2024-02-20 12:11:19,602 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:11:19,602 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 12:11:19,614 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-02-20 12:11:19,814 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:11:19,814 INFO L432 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 12:11:19,814 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:11:19,815 INFO L85 PathProgramCache]: Analyzing trace with hash -1665056232, now seen corresponding path program 14 times [2024-02-20 12:11:19,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:11:19,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369742116] [2024-02-20 12:11:19,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:11:19,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:11:19,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:11:19,973 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:11:19,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:11:19,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369742116] [2024-02-20 12:11:19,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369742116] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:11:19,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [442106784] [2024-02-20 12:11:19,974 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-20 12:11:19,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:11:19,975 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:11:19,975 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 12:11:19,977 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-02-20 12:11:20,033 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-20 12:11:20,034 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:11:20,035 INFO L262 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 17 conjunts are in the unsatisfiable core [2024-02-20 12:11:20,038 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:11:20,254 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:11:20,255 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:11:20,454 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:11:20,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [442106784] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:11:20,454 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:11:20,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 30 [2024-02-20 12:11:20,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284537093] [2024-02-20 12:11:20,455 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:11:20,455 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-02-20 12:11:20,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:11:20,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-02-20 12:11:20,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=796, Unknown=0, NotChecked=0, Total=930 [2024-02-20 12:11:20,462 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 23 [2024-02-20 12:11:20,463 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 626 places, 1824 transitions, 74795 flow. Second operand has 31 states, 31 states have (on average 4.709677419354839) internal successors, (146), 31 states have internal predecessors, (146), 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) [2024-02-20 12:11:20,463 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:11:20,463 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 23 [2024-02-20 12:11:20,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:11:29,451 INFO L124 PetriNetUnfolderBase]: 3533/6835 cut-off events. [2024-02-20 12:11:29,452 INFO L125 PetriNetUnfolderBase]: For 28088/28088 co-relation queries the response was YES. [2024-02-20 12:11:29,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 143275 conditions, 6835 events. 3533/6835 cut-off events. For 28088/28088 co-relation queries the response was YES. Maximal size of possible extension queue 448. Compared 52625 event pairs, 8 based on Foata normal form. 106/6941 useless extension candidates. Maximal degree in co-relation 137242. Up to 5536 conditions per place. [2024-02-20 12:11:29,538 INFO L140 encePairwiseOnDemand]: 11/23 looper letters, 1727 selfloop transitions, 1221 changer transitions 449/3398 dead transitions. [2024-02-20 12:11:29,538 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 793 places, 3398 transitions, 145810 flow [2024-02-20 12:11:29,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 170 states. [2024-02-20 12:11:29,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2024-02-20 12:11:29,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 1393 transitions. [2024-02-20 12:11:29,541 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.35626598465473147 [2024-02-20 12:11:29,541 INFO L308 CegarLoopForPetriNet]: 25 programPoint places, 768 predicate places. [2024-02-20 12:11:29,541 INFO L507 AbstractCegarLoop]: Abstraction has has 793 places, 3398 transitions, 145810 flow [2024-02-20 12:11:29,541 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.709677419354839) internal successors, (146), 31 states have internal predecessors, (146), 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) [2024-02-20 12:11:29,542 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:11:29,542 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 12:11:29,556 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-02-20 12:11:29,754 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:11:29,754 INFO L432 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 12:11:29,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:11:29,755 INFO L85 PathProgramCache]: Analyzing trace with hash -1489290506, now seen corresponding path program 15 times [2024-02-20 12:11:29,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:11:29,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304973699] [2024-02-20 12:11:29,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:11:29,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:11:29,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:11:29,911 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:11:29,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:11:29,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304973699] [2024-02-20 12:11:29,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304973699] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:11:29,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1306355976] [2024-02-20 12:11:29,911 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-02-20 12:11:29,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:11:29,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:11:29,913 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 12:11:29,914 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-02-20 12:11:29,968 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-02-20 12:11:29,968 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:11:29,969 INFO L262 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 17 conjunts are in the unsatisfiable core [2024-02-20 12:11:29,970 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:11:30,184 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:11:30,185 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:11:30,382 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:11:30,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1306355976] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:11:30,383 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:11:30,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 30 [2024-02-20 12:11:30,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685377169] [2024-02-20 12:11:30,383 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:11:30,383 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-02-20 12:11:30,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:11:30,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-02-20 12:11:30,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=793, Unknown=0, NotChecked=0, Total=930 [2024-02-20 12:11:30,395 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 23 [2024-02-20 12:11:30,396 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 793 places, 3398 transitions, 145810 flow. Second operand has 31 states, 31 states have (on average 4.774193548387097) internal successors, (148), 31 states have internal predecessors, (148), 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) [2024-02-20 12:11:30,396 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:11:30,396 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 23 [2024-02-20 12:11:30,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:11:46,030 INFO L124 PetriNetUnfolderBase]: 4940/9291 cut-off events. [2024-02-20 12:11:46,031 INFO L125 PetriNetUnfolderBase]: For 40216/40216 co-relation queries the response was YES. [2024-02-20 12:11:46,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 204168 conditions, 9291 events. 4940/9291 cut-off events. For 40216/40216 co-relation queries the response was YES. Maximal size of possible extension queue 558. Compared 71600 event pairs, 2 based on Foata normal form. 16/9307 useless extension candidates. Maximal degree in co-relation 197171. Up to 7594 conditions per place. [2024-02-20 12:11:46,300 INFO L140 encePairwiseOnDemand]: 10/23 looper letters, 2317 selfloop transitions, 1632 changer transitions 540/4490 dead transitions. [2024-02-20 12:11:46,300 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 931 places, 4490 transitions, 201372 flow [2024-02-20 12:11:46,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2024-02-20 12:11:46,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2024-02-20 12:11:46,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 1214 transitions. [2024-02-20 12:11:46,302 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.37434474252235583 [2024-02-20 12:11:46,303 INFO L308 CegarLoopForPetriNet]: 25 programPoint places, 906 predicate places. [2024-02-20 12:11:46,303 INFO L507 AbstractCegarLoop]: Abstraction has has 931 places, 4490 transitions, 201372 flow [2024-02-20 12:11:46,303 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.774193548387097) internal successors, (148), 31 states have internal predecessors, (148), 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) [2024-02-20 12:11:46,303 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:11:46,303 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 12:11:46,315 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-02-20 12:11:46,515 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-02-20 12:11:46,515 INFO L432 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 12:11:46,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:11:46,516 INFO L85 PathProgramCache]: Analyzing trace with hash -1488378954, now seen corresponding path program 16 times [2024-02-20 12:11:46,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:11:46,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156617105] [2024-02-20 12:11:46,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:11:46,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:11:46,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:11:46,647 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:11:46,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:11:46,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156617105] [2024-02-20 12:11:46,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156617105] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:11:46,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [995352691] [2024-02-20 12:11:46,648 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-02-20 12:11:46,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:11:46,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:11:46,649 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 12:11:46,651 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-02-20 12:11:46,727 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-02-20 12:11:46,727 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:11:46,728 INFO L262 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 17 conjunts are in the unsatisfiable core [2024-02-20 12:11:46,730 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:11:46,934 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:11:46,934 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:11:47,120 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:11:47,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [995352691] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:11:47,120 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:11:47,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 30 [2024-02-20 12:11:47,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404440280] [2024-02-20 12:11:47,120 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:11:47,120 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-02-20 12:11:47,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:11:47,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-02-20 12:11:47,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=782, Unknown=0, NotChecked=0, Total=930 [2024-02-20 12:11:47,131 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 23 [2024-02-20 12:11:47,131 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 931 places, 4490 transitions, 201372 flow. Second operand has 31 states, 31 states have (on average 4.709677419354839) internal successors, (146), 31 states have internal predecessors, (146), 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) [2024-02-20 12:11:47,131 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:11:47,131 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 23 [2024-02-20 12:11:47,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:12:06,869 INFO L124 PetriNetUnfolderBase]: 5462/10265 cut-off events. [2024-02-20 12:12:06,869 INFO L125 PetriNetUnfolderBase]: For 45015/45015 co-relation queries the response was YES. [2024-02-20 12:12:06,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 235575 conditions, 10265 events. 5462/10265 cut-off events. For 45015/45015 co-relation queries the response was YES. Maximal size of possible extension queue 618. Compared 80822 event pairs, 12 based on Foata normal form. 3/10268 useless extension candidates. Maximal degree in co-relation 227756. Up to 8379 conditions per place. [2024-02-20 12:12:07,014 INFO L140 encePairwiseOnDemand]: 11/23 looper letters, 2967 selfloop transitions, 1420 changer transitions 605/4993 dead transitions. [2024-02-20 12:12:07,014 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1000 places, 4993 transitions, 233723 flow [2024-02-20 12:12:07,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2024-02-20 12:12:07,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2024-02-20 12:12:07,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 547 transitions. [2024-02-20 12:12:07,015 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.33975155279503105 [2024-02-20 12:12:07,016 INFO L308 CegarLoopForPetriNet]: 25 programPoint places, 975 predicate places. [2024-02-20 12:12:07,016 INFO L507 AbstractCegarLoop]: Abstraction has has 1000 places, 4993 transitions, 233723 flow [2024-02-20 12:12:07,016 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.709677419354839) internal successors, (146), 31 states have internal predecessors, (146), 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) [2024-02-20 12:12:07,016 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:12:07,016 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 12:12:07,028 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-02-20 12:12:07,229 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:12:07,229 INFO L432 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 12:12:07,230 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:12:07,230 INFO L85 PathProgramCache]: Analyzing trace with hash 2015961526, now seen corresponding path program 17 times [2024-02-20 12:12:07,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:12:07,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396362245] [2024-02-20 12:12:07,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:12:07,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:12:07,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:12:07,379 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:12:07,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:12:07,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396362245] [2024-02-20 12:12:07,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396362245] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:12:07,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1394512483] [2024-02-20 12:12:07,380 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-02-20 12:12:07,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:12:07,380 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:12:07,381 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 12:12:07,383 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-02-20 12:12:07,458 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-02-20 12:12:07,459 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:12:07,460 INFO L262 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 17 conjunts are in the unsatisfiable core [2024-02-20 12:12:07,460 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:12:07,679 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:12:07,679 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:12:07,880 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:12:07,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1394512483] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:12:07,880 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:12:07,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 30 [2024-02-20 12:12:07,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946660191] [2024-02-20 12:12:07,880 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:12:07,881 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-02-20 12:12:07,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:12:07,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-02-20 12:12:07,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=796, Unknown=0, NotChecked=0, Total=930 [2024-02-20 12:12:07,909 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 23 [2024-02-20 12:12:07,910 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1000 places, 4993 transitions, 233723 flow. Second operand has 31 states, 31 states have (on average 4.709677419354839) internal successors, (146), 31 states have internal predecessors, (146), 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) [2024-02-20 12:12:07,910 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:12:07,910 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 23 [2024-02-20 12:12:07,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:12:40,777 INFO L124 PetriNetUnfolderBase]: 7956/14794 cut-off events. [2024-02-20 12:12:40,778 INFO L125 PetriNetUnfolderBase]: For 66639/66639 co-relation queries the response was YES. [2024-02-20 12:12:40,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 354021 conditions, 14794 events. 7956/14794 cut-off events. For 66639/66639 co-relation queries the response was YES. Maximal size of possible extension queue 1012. Compared 123777 event pairs, 4 based on Foata normal form. 10/14804 useless extension candidates. Maximal degree in co-relation 343986. Up to 12112 conditions per place. [2024-02-20 12:12:41,034 INFO L140 encePairwiseOnDemand]: 11/23 looper letters, 3965 selfloop transitions, 2561 changer transitions 807/7334 dead transitions. [2024-02-20 12:12:41,035 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1133 places, 7334 transitions, 357466 flow [2024-02-20 12:12:41,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 134 states. [2024-02-20 12:12:41,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2024-02-20 12:12:41,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 1020 transitions. [2024-02-20 12:12:41,037 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.3309539260220636 [2024-02-20 12:12:41,037 INFO L308 CegarLoopForPetriNet]: 25 programPoint places, 1108 predicate places. [2024-02-20 12:12:41,037 INFO L507 AbstractCegarLoop]: Abstraction has has 1133 places, 7334 transitions, 357466 flow [2024-02-20 12:12:41,037 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.709677419354839) internal successors, (146), 31 states have internal predecessors, (146), 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) [2024-02-20 12:12:41,037 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:12:41,037 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 12:12:41,054 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-02-20 12:12:41,254 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:12:41,255 INFO L432 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 12:12:41,255 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:12:41,255 INFO L85 PathProgramCache]: Analyzing trace with hash -766762537, now seen corresponding path program 2 times [2024-02-20 12:12:41,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:12:41,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700515067] [2024-02-20 12:12:41,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:12:41,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:12:41,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:12:41,389 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:12:41,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:12:41,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700515067] [2024-02-20 12:12:41,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700515067] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:12:41,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [995351685] [2024-02-20 12:12:41,390 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-20 12:12:41,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:12:41,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:12:41,391 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 12:12:41,393 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-02-20 12:12:41,471 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-20 12:12:41,471 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:12:41,472 INFO L262 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 17 conjunts are in the unsatisfiable core [2024-02-20 12:12:41,472 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:12:41,627 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:12:41,627 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:12:41,775 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:12:41,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [995351685] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:12:41,776 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:12:41,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 29 [2024-02-20 12:12:41,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114082746] [2024-02-20 12:12:41,776 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:12:41,776 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-02-20 12:12:41,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:12:41,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-02-20 12:12:41,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=741, Unknown=0, NotChecked=0, Total=870 [2024-02-20 12:12:41,789 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 23 [2024-02-20 12:12:41,789 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1133 places, 7334 transitions, 357466 flow. Second operand has 30 states, 30 states have (on average 4.433333333333334) internal successors, (133), 30 states have internal predecessors, (133), 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) [2024-02-20 12:12:41,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:12:41,789 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 23 [2024-02-20 12:12:41,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:13:37,303 INFO L124 PetriNetUnfolderBase]: 8210/15274 cut-off events. [2024-02-20 12:13:37,304 INFO L125 PetriNetUnfolderBase]: For 72651/72651 co-relation queries the response was YES. [2024-02-20 12:13:37,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 381064 conditions, 15274 events. 8210/15274 cut-off events. For 72651/72651 co-relation queries the response was YES. Maximal size of possible extension queue 1062. Compared 128492 event pairs, 8 based on Foata normal form. 6/15280 useless extension candidates. Maximal degree in co-relation 369462. Up to 12558 conditions per place. [2024-02-20 12:13:37,556 INFO L140 encePairwiseOnDemand]: 10/23 looper letters, 4304 selfloop transitions, 2439 changer transitions 893/7637 dead transitions. [2024-02-20 12:13:37,556 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1199 places, 7637 transitions, 387822 flow [2024-02-20 12:13:37,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2024-02-20 12:13:37,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2024-02-20 12:13:37,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 532 transitions. [2024-02-20 12:13:37,558 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.34523036988968203 [2024-02-20 12:13:37,558 INFO L308 CegarLoopForPetriNet]: 25 programPoint places, 1174 predicate places. [2024-02-20 12:13:37,559 INFO L507 AbstractCegarLoop]: Abstraction has has 1199 places, 7637 transitions, 387822 flow [2024-02-20 12:13:37,559 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 4.433333333333334) internal successors, (133), 30 states have internal predecessors, (133), 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) [2024-02-20 12:13:37,559 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:13:37,559 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 12:13:37,571 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-02-20 12:13:37,770 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:13:37,771 INFO L432 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 12:13:37,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:13:37,771 INFO L85 PathProgramCache]: Analyzing trace with hash 699804222, now seen corresponding path program 18 times [2024-02-20 12:13:37,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:13:37,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498024991] [2024-02-20 12:13:37,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:13:37,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:13:37,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:13:37,908 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:13:37,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:13:37,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498024991] [2024-02-20 12:13:37,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498024991] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:13:37,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1167321726] [2024-02-20 12:13:37,910 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-02-20 12:13:37,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:13:37,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:13:37,911 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 12:13:37,912 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-02-20 12:13:37,992 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-02-20 12:13:37,992 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:13:37,993 INFO L262 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 17 conjunts are in the unsatisfiable core [2024-02-20 12:13:37,994 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:13:38,207 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:13:38,207 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:13:38,392 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:13:38,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1167321726] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:13:38,392 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:13:38,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 30 [2024-02-20 12:13:38,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353062713] [2024-02-20 12:13:38,393 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:13:38,393 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-02-20 12:13:38,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:13:38,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-02-20 12:13:38,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=786, Unknown=0, NotChecked=0, Total=930 [2024-02-20 12:13:38,400 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 23 [2024-02-20 12:13:38,401 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1199 places, 7637 transitions, 387822 flow. Second operand has 31 states, 31 states have (on average 4.709677419354839) internal successors, (146), 31 states have internal predecessors, (146), 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) [2024-02-20 12:13:38,401 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:13:38,401 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 23 [2024-02-20 12:13:38,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:14:37,118 INFO L124 PetriNetUnfolderBase]: 8379/15586 cut-off events. [2024-02-20 12:14:37,118 INFO L125 PetriNetUnfolderBase]: For 75214/75214 co-relation queries the response was YES. [2024-02-20 12:14:37,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 404346 conditions, 15586 events. 8379/15586 cut-off events. For 75214/75214 co-relation queries the response was YES. Maximal size of possible extension queue 1074. Compared 131503 event pairs, 6 based on Foata normal form. 3/15589 useless extension candidates. Maximal degree in co-relation 392222. Up to 12814 conditions per place. [2024-02-20 12:14:37,378 INFO L140 encePairwiseOnDemand]: 11/23 looper letters, 4517 selfloop transitions, 2367 changer transitions 914/7799 dead transitions. [2024-02-20 12:14:37,378 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1282 places, 7799 transitions, 411548 flow [2024-02-20 12:14:37,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2024-02-20 12:14:37,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2024-02-20 12:14:37,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 647 transitions. [2024-02-20 12:14:37,380 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.33488612836438925 [2024-02-20 12:14:37,380 INFO L308 CegarLoopForPetriNet]: 25 programPoint places, 1257 predicate places. [2024-02-20 12:14:37,380 INFO L507 AbstractCegarLoop]: Abstraction has has 1282 places, 7799 transitions, 411548 flow [2024-02-20 12:14:37,381 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.709677419354839) internal successors, (146), 31 states have internal predecessors, (146), 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) [2024-02-20 12:14:37,381 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:14:37,381 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 12:14:37,392 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-02-20 12:14:37,592 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-02-20 12:14:37,592 INFO L432 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 12:14:37,593 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:14:37,593 INFO L85 PathProgramCache]: Analyzing trace with hash -1179170281, now seen corresponding path program 3 times [2024-02-20 12:14:37,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:14:37,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949650378] [2024-02-20 12:14:37,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:14:37,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:14:37,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:14:37,723 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:14:37,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:14:37,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949650378] [2024-02-20 12:14:37,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949650378] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:14:37,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [416728214] [2024-02-20 12:14:37,723 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-02-20 12:14:37,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:14:37,724 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:14:37,724 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 12:14:37,725 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-02-20 12:14:37,799 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-02-20 12:14:37,799 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:14:37,800 INFO L262 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 17 conjunts are in the unsatisfiable core [2024-02-20 12:14:37,801 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:14:37,950 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:14:37,951 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:14:38,088 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:14:38,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [416728214] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:14:38,088 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:14:38,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 29 [2024-02-20 12:14:38,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477204063] [2024-02-20 12:14:38,088 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:14:38,089 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-02-20 12:14:38,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:14:38,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-02-20 12:14:38,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=744, Unknown=0, NotChecked=0, Total=870 [2024-02-20 12:14:38,112 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 23 [2024-02-20 12:14:38,113 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1282 places, 7799 transitions, 411548 flow. Second operand has 30 states, 30 states have (on average 4.433333333333334) internal successors, (133), 30 states have internal predecessors, (133), 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) [2024-02-20 12:14:38,113 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:14:38,113 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 23 [2024-02-20 12:14:38,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:15:37,634 INFO L124 PetriNetUnfolderBase]: 8480/15878 cut-off events. [2024-02-20 12:15:37,635 INFO L125 PetriNetUnfolderBase]: For 75530/75530 co-relation queries the response was YES. [2024-02-20 12:15:37,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 427990 conditions, 15878 events. 8480/15878 cut-off events. For 75530/75530 co-relation queries the response was YES. Maximal size of possible extension queue 1134. Compared 135441 event pairs, 10 based on Foata normal form. 4/15882 useless extension candidates. Maximal degree in co-relation 415367. Up to 13095 conditions per place. [2024-02-20 12:15:38,152 INFO L140 encePairwiseOnDemand]: 10/23 looper letters, 4365 selfloop transitions, 2661 changer transitions 970/7997 dead transitions. [2024-02-20 12:15:38,152 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1353 places, 7997 transitions, 438238 flow [2024-02-20 12:15:38,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2024-02-20 12:15:38,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2024-02-20 12:15:38,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 568 transitions. [2024-02-20 12:15:38,158 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.34299516908212563 [2024-02-20 12:15:38,159 INFO L308 CegarLoopForPetriNet]: 25 programPoint places, 1328 predicate places. [2024-02-20 12:15:38,159 INFO L507 AbstractCegarLoop]: Abstraction has has 1353 places, 7997 transitions, 438238 flow [2024-02-20 12:15:38,159 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 4.433333333333334) internal successors, (133), 30 states have internal predecessors, (133), 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) [2024-02-20 12:15:38,159 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:15:38,159 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 12:15:38,170 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-02-20 12:15:38,370 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-02-20 12:15:38,370 INFO L432 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 12:15:38,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:15:38,370 INFO L85 PathProgramCache]: Analyzing trace with hash 284983003, now seen corresponding path program 4 times [2024-02-20 12:15:38,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:15:38,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752117624] [2024-02-20 12:15:38,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:15:38,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:15:38,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:15:38,544 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:15:38,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:15:38,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752117624] [2024-02-20 12:15:38,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752117624] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:15:38,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2009880105] [2024-02-20 12:15:38,544 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-02-20 12:15:38,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:15:38,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:15:38,545 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 12:15:38,546 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-02-20 12:15:38,620 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-02-20 12:15:38,621 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:15:38,621 INFO L262 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 17 conjunts are in the unsatisfiable core [2024-02-20 12:15:38,622 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:15:38,776 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:15:38,777 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:15:38,924 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:15:38,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2009880105] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:15:38,925 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:15:38,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 29 [2024-02-20 12:15:38,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046242234] [2024-02-20 12:15:38,925 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:15:38,925 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-02-20 12:15:38,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:15:38,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-02-20 12:15:38,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=734, Unknown=0, NotChecked=0, Total=870 [2024-02-20 12:15:38,944 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 23 [2024-02-20 12:15:38,944 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1353 places, 7997 transitions, 438238 flow. Second operand has 30 states, 30 states have (on average 4.433333333333334) internal successors, (133), 30 states have internal predecessors, (133), 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) [2024-02-20 12:15:38,944 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:15:38,944 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 23 [2024-02-20 12:15:38,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:16:46,745 INFO L124 PetriNetUnfolderBase]: 9255/17383 cut-off events. [2024-02-20 12:16:46,746 INFO L125 PetriNetUnfolderBase]: For 82258/82258 co-relation queries the response was YES. [2024-02-20 12:16:46,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 486384 conditions, 17383 events. 9255/17383 cut-off events. For 82258/82258 co-relation queries the response was YES. Maximal size of possible extension queue 1204. Compared 151055 event pairs, 4 based on Foata normal form. 93/17476 useless extension candidates. Maximal degree in co-relation 470025. Up to 14419 conditions per place. [2024-02-20 12:16:47,156 INFO L140 encePairwiseOnDemand]: 10/23 looper letters, 4532 selfloop transitions, 3171 changer transitions 1174/8878 dead transitions. [2024-02-20 12:16:47,157 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1440 places, 8878 transitions, 504593 flow [2024-02-20 12:16:47,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2024-02-20 12:16:47,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2024-02-20 12:16:47,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 684 transitions. [2024-02-20 12:16:47,158 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.33794466403162055 [2024-02-20 12:16:47,158 INFO L308 CegarLoopForPetriNet]: 25 programPoint places, 1415 predicate places. [2024-02-20 12:16:47,159 INFO L507 AbstractCegarLoop]: Abstraction has has 1440 places, 8878 transitions, 504593 flow [2024-02-20 12:16:47,159 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 4.433333333333334) internal successors, (133), 30 states have internal predecessors, (133), 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) [2024-02-20 12:16:47,159 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:16:47,159 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 12:16:47,172 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-02-20 12:16:47,370 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-02-20 12:16:47,370 INFO L432 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 12:16:47,371 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:16:47,371 INFO L85 PathProgramCache]: Analyzing trace with hash -549363790, now seen corresponding path program 19 times [2024-02-20 12:16:47,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:16:47,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787941288] [2024-02-20 12:16:47,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:16:47,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:16:47,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:16:47,520 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:16:47,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:16:47,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787941288] [2024-02-20 12:16:47,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787941288] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:16:47,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [61737504] [2024-02-20 12:16:47,520 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-02-20 12:16:47,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:16:47,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:16:47,537 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 12:16:47,553 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-02-20 12:16:47,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:16:47,609 INFO L262 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 17 conjunts are in the unsatisfiable core [2024-02-20 12:16:47,610 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:16:47,814 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:16:47,815 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:16:48,015 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:16:48,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [61737504] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:16:48,015 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:16:48,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 30 [2024-02-20 12:16:48,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984072009] [2024-02-20 12:16:48,015 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:16:48,016 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-02-20 12:16:48,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:16:48,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-02-20 12:16:48,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=798, Unknown=0, NotChecked=0, Total=930 [2024-02-20 12:16:48,035 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 23 [2024-02-20 12:16:48,036 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1440 places, 8878 transitions, 504593 flow. Second operand has 31 states, 31 states have (on average 4.709677419354839) internal successors, (146), 31 states have internal predecessors, (146), 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) [2024-02-20 12:16:48,036 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:16:48,036 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 23 [2024-02-20 12:16:48,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:18:39,116 INFO L124 PetriNetUnfolderBase]: 12560/23500 cut-off events. [2024-02-20 12:18:39,116 INFO L125 PetriNetUnfolderBase]: For 113165/113165 co-relation queries the response was YES. [2024-02-20 12:18:39,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 680735 conditions, 23500 events. 12560/23500 cut-off events. For 113165/113165 co-relation queries the response was YES. Maximal size of possible extension queue 1511. Compared 212503 event pairs, 12 based on Foata normal form. 5/23505 useless extension candidates. Maximal degree in co-relation 660006. Up to 19575 conditions per place. [2024-02-20 12:18:39,570 INFO L140 encePairwiseOnDemand]: 10/23 looper letters, 5950 selfloop transitions, 4446 changer transitions 1359/11756 dead transitions. [2024-02-20 12:18:39,571 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1579 places, 11756 transitions, 691964 flow [2024-02-20 12:18:39,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 140 states. [2024-02-20 12:18:39,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2024-02-20 12:18:39,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 1197 transitions. [2024-02-20 12:18:39,573 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.3717391304347826 [2024-02-20 12:18:39,573 INFO L308 CegarLoopForPetriNet]: 25 programPoint places, 1554 predicate places. [2024-02-20 12:18:39,573 INFO L507 AbstractCegarLoop]: Abstraction has has 1579 places, 11756 transitions, 691964 flow [2024-02-20 12:18:39,573 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.709677419354839) internal successors, (146), 31 states have internal predecessors, (146), 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) [2024-02-20 12:18:39,573 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:18:39,573 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 12:18:39,585 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-02-20 12:18:39,785 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:18:39,785 INFO L432 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 12:18:39,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:18:39,786 INFO L85 PathProgramCache]: Analyzing trace with hash -549958436, now seen corresponding path program 20 times [2024-02-20 12:18:39,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:18:39,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015834314] [2024-02-20 12:18:39,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:18:39,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:18:39,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:18:39,924 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:18:39,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:18:39,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015834314] [2024-02-20 12:18:39,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015834314] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:18:39,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [118657285] [2024-02-20 12:18:39,924 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-20 12:18:39,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:18:39,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:18:39,926 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 12:18:39,927 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-02-20 12:18:40,003 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-20 12:18:40,004 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:18:40,004 INFO L262 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 17 conjunts are in the unsatisfiable core [2024-02-20 12:18:40,005 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:18:40,212 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:18:40,212 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:18:40,413 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:18:40,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [118657285] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:18:40,413 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:18:40,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 30 [2024-02-20 12:18:40,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795756681] [2024-02-20 12:18:40,413 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:18:40,414 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-02-20 12:18:40,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:18:40,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-02-20 12:18:40,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=798, Unknown=0, NotChecked=0, Total=930 [2024-02-20 12:18:40,424 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 23 [2024-02-20 12:18:40,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1579 places, 11756 transitions, 691964 flow. Second operand has 31 states, 31 states have (on average 4.709677419354839) internal successors, (146), 31 states have internal predecessors, (146), 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) [2024-02-20 12:18:40,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:18:40,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 23 [2024-02-20 12:18:40,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:21:30,649 INFO L124 PetriNetUnfolderBase]: 13089/24550 cut-off events. [2024-02-20 12:21:30,650 INFO L125 PetriNetUnfolderBase]: For 117986/117986 co-relation queries the response was YES. [2024-02-20 12:21:30,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 735461 conditions, 24550 events. 13089/24550 cut-off events. For 117986/117986 co-relation queries the response was YES. Maximal size of possible extension queue 1545. Compared 224179 event pairs, 20 based on Foata normal form. 5/24555 useless extension candidates. Maximal degree in co-relation 713060. Up to 20459 conditions per place. [2024-02-20 12:21:31,172 INFO L140 encePairwiseOnDemand]: 11/23 looper letters, 6217 selfloop transitions, 4664 changer transitions 1396/12278 dead transitions. [2024-02-20 12:21:31,173 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1741 places, 12278 transitions, 747394 flow [2024-02-20 12:21:31,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 163 states. [2024-02-20 12:21:31,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2024-02-20 12:21:31,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 1298 transitions. [2024-02-20 12:21:31,175 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.34622566017604695 [2024-02-20 12:21:31,175 INFO L308 CegarLoopForPetriNet]: 25 programPoint places, 1716 predicate places. [2024-02-20 12:21:31,175 INFO L507 AbstractCegarLoop]: Abstraction has has 1741 places, 12278 transitions, 747394 flow [2024-02-20 12:21:31,175 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.709677419354839) internal successors, (146), 31 states have internal predecessors, (146), 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) [2024-02-20 12:21:31,175 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:21:31,175 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 12:21:31,192 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2024-02-20 12:21:31,387 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:21:31,388 INFO L432 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 12:21:31,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:21:31,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1679980875, now seen corresponding path program 5 times [2024-02-20 12:21:31,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:21:31,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157844107] [2024-02-20 12:21:31,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:21:31,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:21:31,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:21:31,538 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:21:31,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:21:31,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157844107] [2024-02-20 12:21:31,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157844107] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:21:31,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1777828046] [2024-02-20 12:21:31,540 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-02-20 12:21:31,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:21:31,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:21:31,541 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 12:21:31,542 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-02-20 12:21:31,620 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-20 12:21:31,620 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:21:31,621 INFO L262 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 17 conjunts are in the unsatisfiable core [2024-02-20 12:21:31,621 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:21:31,784 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:21:31,784 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:21:31,939 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:21:31,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1777828046] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:21:31,939 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:21:31,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 29 [2024-02-20 12:21:31,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005658789] [2024-02-20 12:21:31,939 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:21:31,939 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-02-20 12:21:31,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:21:31,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-02-20 12:21:31,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=728, Unknown=0, NotChecked=0, Total=870 [2024-02-20 12:21:31,948 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 23 [2024-02-20 12:21:31,948 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1741 places, 12278 transitions, 747394 flow. Second operand has 30 states, 30 states have (on average 4.433333333333334) internal successors, (133), 30 states have internal predecessors, (133), 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) [2024-02-20 12:21:31,948 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:21:31,948 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 23 [2024-02-20 12:21:31,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:24:35,258 INFO L124 PetriNetUnfolderBase]: 13492/25405 cut-off events. [2024-02-20 12:24:35,259 INFO L125 PetriNetUnfolderBase]: For 119667/119667 co-relation queries the response was YES. [2024-02-20 12:24:35,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 786293 conditions, 25405 events. 13492/25405 cut-off events. For 119667/119667 co-relation queries the response was YES. Maximal size of possible extension queue 1577. Compared 233958 event pairs, 10 based on Foata normal form. 86/25491 useless extension candidates. Maximal degree in co-relation 762658. Up to 21165 conditions per place. [2024-02-20 12:24:35,813 INFO L140 encePairwiseOnDemand]: 10/23 looper letters, 6681 selfloop transitions, 5021 changer transitions 1474/13177 dead transitions. [2024-02-20 12:24:35,813 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1857 places, 13177 transitions, 828788 flow [2024-02-20 12:24:35,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2024-02-20 12:24:35,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2024-02-20 12:24:35,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 870 transitions. [2024-02-20 12:24:35,815 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.3232998885172798 [2024-02-20 12:24:35,816 INFO L308 CegarLoopForPetriNet]: 25 programPoint places, 1832 predicate places. [2024-02-20 12:24:35,816 INFO L507 AbstractCegarLoop]: Abstraction has has 1857 places, 13177 transitions, 828788 flow [2024-02-20 12:24:35,816 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 4.433333333333334) internal successors, (133), 30 states have internal predecessors, (133), 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) [2024-02-20 12:24:35,816 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:24:35,816 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 12:24:35,834 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2024-02-20 12:24:36,032 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2024-02-20 12:24:36,032 INFO L432 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 12:24:36,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:24:36,032 INFO L85 PathProgramCache]: Analyzing trace with hash 1775515378, now seen corresponding path program 21 times [2024-02-20 12:24:36,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:24:36,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791684717] [2024-02-20 12:24:36,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:24:36,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:24:36,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:24:36,246 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:24:36,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:24:36,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791684717] [2024-02-20 12:24:36,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791684717] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:24:36,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1470602952] [2024-02-20 12:24:36,247 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-02-20 12:24:36,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:24:36,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:24:36,248 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 12:24:36,298 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-02-20 12:24:36,346 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-02-20 12:24:36,347 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:24:36,348 INFO L262 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 17 conjunts are in the unsatisfiable core [2024-02-20 12:24:36,348 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:24:36,550 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:24:36,550 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:24:36,729 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:24:36,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1470602952] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:24:36,730 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:24:36,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 30 [2024-02-20 12:24:36,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629222842] [2024-02-20 12:24:36,730 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:24:36,730 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-02-20 12:24:36,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:24:36,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-02-20 12:24:36,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=783, Unknown=0, NotChecked=0, Total=930 [2024-02-20 12:24:36,740 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 23 [2024-02-20 12:24:36,740 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1857 places, 13177 transitions, 828788 flow. Second operand has 31 states, 31 states have (on average 4.709677419354839) internal successors, (146), 31 states have internal predecessors, (146), 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) [2024-02-20 12:24:36,741 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:24:36,741 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 23 [2024-02-20 12:24:36,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Killed by 15