./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/popl20-three-array-sum.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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 ../sv-benchmarks/c/weaver/popl20-three-array-sum.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 c1d27b7f98ac68d2da6120346c107c87df7f6f708200f0d5d2c806741122116e --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 19:33:43,466 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 19:33:43,529 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 19:33:43,534 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 19:33:43,535 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 19:33:43,558 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 19:33:43,559 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 19:33:43,559 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 19:33:43,560 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 19:33:43,560 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 19:33:43,561 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 19:33:43,561 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 19:33:43,561 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 19:33:43,562 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 19:33:43,562 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 19:33:43,563 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 19:33:43,563 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 19:33:43,563 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 19:33:43,564 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 19:33:43,564 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 19:33:43,564 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 19:33:43,565 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 19:33:43,565 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 19:33:43,566 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 19:33:43,566 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 19:33:43,566 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 19:33:43,567 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 19:33:43,567 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 19:33:43,567 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 19:33:43,568 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 19:33:43,568 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 19:33:43,568 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 19:33:43,569 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 19:33:43,569 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 19:33:43,569 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 19:33:43,569 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 19:33:43,570 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 19:33:43,570 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 19:33:43,570 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 19:33:43,571 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 19:33:43,571 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 19:33:43,571 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 19:33:43,572 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c1d27b7f98ac68d2da6120346c107c87df7f6f708200f0d5d2c806741122116e [2024-11-16 19:33:43,865 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 19:33:43,891 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 19:33:43,894 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 19:33:43,895 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 19:33:43,895 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 19:33:43,896 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-three-array-sum.wvr.c [2024-11-16 19:33:45,285 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 19:33:45,483 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 19:33:45,483 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-three-array-sum.wvr.c [2024-11-16 19:33:45,494 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9e21f11d/dae8ed236d6347bfbc1ae0db79831845/FLAGc08df05af [2024-11-16 19:33:45,508 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9e21f11d/dae8ed236d6347bfbc1ae0db79831845 [2024-11-16 19:33:45,511 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 19:33:45,513 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 19:33:45,515 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 19:33:45,516 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 19:33:45,521 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 19:33:45,522 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:33:45" (1/1) ... [2024-11-16 19:33:45,523 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1331268 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:33:45, skipping insertion in model container [2024-11-16 19:33:45,523 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:33:45" (1/1) ... [2024-11-16 19:33:45,543 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 19:33:45,751 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-three-array-sum.wvr.c[2730,2743] [2024-11-16 19:33:45,759 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 19:33:45,767 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 19:33:45,788 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-three-array-sum.wvr.c[2730,2743] [2024-11-16 19:33:45,791 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 19:33:45,815 INFO L204 MainTranslator]: Completed translation [2024-11-16 19:33:45,815 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:33:45 WrapperNode [2024-11-16 19:33:45,815 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 19:33:45,816 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 19:33:45,817 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 19:33:45,817 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 19:33:45,823 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:33:45" (1/1) ... [2024-11-16 19:33:45,836 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:33:45" (1/1) ... [2024-11-16 19:33:45,867 INFO L138 Inliner]: procedures = 25, calls = 29, calls flagged for inlining = 8, calls inlined = 12, statements flattened = 135 [2024-11-16 19:33:45,868 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 19:33:45,869 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 19:33:45,869 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 19:33:45,869 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 19:33:45,879 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:33:45" (1/1) ... [2024-11-16 19:33:45,879 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:33:45" (1/1) ... [2024-11-16 19:33:45,882 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:33:45" (1/1) ... [2024-11-16 19:33:45,899 INFO L175 MemorySlicer]: Split 11 memory accesses to 2 slices as follows [2, 9]. 82 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 4 writes are split as follows [0, 4]. [2024-11-16 19:33:45,899 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:33:45" (1/1) ... [2024-11-16 19:33:45,900 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:33:45" (1/1) ... [2024-11-16 19:33:45,906 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:33:45" (1/1) ... [2024-11-16 19:33:45,907 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:33:45" (1/1) ... [2024-11-16 19:33:45,909 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:33:45" (1/1) ... [2024-11-16 19:33:45,910 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:33:45" (1/1) ... [2024-11-16 19:33:45,913 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 19:33:45,913 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 19:33:45,914 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 19:33:45,914 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 19:33:45,914 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:33:45" (1/1) ... [2024-11-16 19:33:45,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 19:33:45,932 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:33:45,947 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) [2024-11-16 19:33:45,949 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 [2024-11-16 19:33:45,990 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 19:33:45,990 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-16 19:33:45,991 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-16 19:33:45,991 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-16 19:33:45,991 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-16 19:33:45,991 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-16 19:33:45,991 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-16 19:33:45,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 19:33:45,992 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-16 19:33:45,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-16 19:33:45,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-16 19:33:45,994 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-16 19:33:45,994 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-16 19:33:45,994 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-16 19:33:45,994 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 19:33:45,994 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 19:33:45,994 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-16 19:33:45,994 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-16 19:33:45,996 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-16 19:33:46,138 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 19:33:46,141 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 19:33:46,439 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-16 19:33:46,440 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 19:33:46,665 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 19:33:46,667 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 19:33:46,668 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 07:33:46 BoogieIcfgContainer [2024-11-16 19:33:46,668 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 19:33:46,671 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 19:33:46,672 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 19:33:46,675 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 19:33:46,675 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 07:33:45" (1/3) ... [2024-11-16 19:33:46,676 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@123eb5af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:33:46, skipping insertion in model container [2024-11-16 19:33:46,676 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:33:45" (2/3) ... [2024-11-16 19:33:46,676 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@123eb5af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:33:46, skipping insertion in model container [2024-11-16 19:33:46,676 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 07:33:46" (3/3) ... [2024-11-16 19:33:46,677 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-three-array-sum.wvr.c [2024-11-16 19:33:46,690 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 19:33:46,691 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 19:33:46,691 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-16 19:33:46,742 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-16 19:33:46,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 54 places, 57 transitions, 135 flow [2024-11-16 19:33:46,814 INFO L124 PetriNetUnfolderBase]: 13/54 cut-off events. [2024-11-16 19:33:46,814 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-16 19:33:46,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67 conditions, 54 events. 13/54 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 71 event pairs, 0 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 38. Up to 2 conditions per place. [2024-11-16 19:33:46,819 INFO L82 GeneralOperation]: Start removeDead. Operand has 54 places, 57 transitions, 135 flow [2024-11-16 19:33:46,823 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 50 places, 53 transitions, 124 flow [2024-11-16 19:33:46,838 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 19:33:46,846 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@53872d9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 19:33:46,847 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-16 19:33:46,869 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-16 19:33:46,870 INFO L124 PetriNetUnfolderBase]: 13/52 cut-off events. [2024-11-16 19:33:46,870 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-16 19:33:46,870 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:33:46,871 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:33:46,872 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-16 19:33:46,877 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:33:46,877 INFO L85 PathProgramCache]: Analyzing trace with hash -491636599, now seen corresponding path program 1 times [2024-11-16 19:33:46,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:33:46,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590205531] [2024-11-16 19:33:46,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:33:46,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:33:47,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:33:47,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:33:47,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:33:47,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590205531] [2024-11-16 19:33:47,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590205531] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:33:47,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:33:47,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 19:33:47,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611795911] [2024-11-16 19:33:47,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:33:47,127 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-16 19:33:47,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:33:47,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-16 19:33:47,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 19:33:47,161 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 57 [2024-11-16 19:33:47,163 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 53 transitions, 124 flow. Second operand has 2 states, 2 states have (on average 34.0) internal successors, (68), 2 states have internal predecessors, (68), 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) [2024-11-16 19:33:47,163 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:33:47,163 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 57 [2024-11-16 19:33:47,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:33:47,409 INFO L124 PetriNetUnfolderBase]: 431/766 cut-off events. [2024-11-16 19:33:47,410 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2024-11-16 19:33:47,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1419 conditions, 766 events. 431/766 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3691 event pairs, 284 based on Foata normal form. 124/806 useless extension candidates. Maximal degree in co-relation 1204. Up to 590 conditions per place. [2024-11-16 19:33:47,424 INFO L140 encePairwiseOnDemand]: 51/57 looper letters, 29 selfloop transitions, 0 changer transitions 0/47 dead transitions. [2024-11-16 19:33:47,424 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 47 transitions, 170 flow [2024-11-16 19:33:47,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-16 19:33:47,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-16 19:33:47,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 77 transitions. [2024-11-16 19:33:47,436 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6754385964912281 [2024-11-16 19:33:47,438 INFO L175 Difference]: Start difference. First operand has 50 places, 53 transitions, 124 flow. Second operand 2 states and 77 transitions. [2024-11-16 19:33:47,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 47 transitions, 170 flow [2024-11-16 19:33:47,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 47 transitions, 158 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-16 19:33:47,447 INFO L231 Difference]: Finished difference. Result has 45 places, 47 transitions, 100 flow [2024-11-16 19:33:47,450 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=100, PETRI_PLACES=45, PETRI_TRANSITIONS=47} [2024-11-16 19:33:47,453 INFO L277 CegarLoopForPetriNet]: 50 programPoint places, -5 predicate places. [2024-11-16 19:33:47,454 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 47 transitions, 100 flow [2024-11-16 19:33:47,454 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 34.0) internal successors, (68), 2 states have internal predecessors, (68), 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) [2024-11-16 19:33:47,454 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:33:47,454 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:33:47,455 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 19:33:47,455 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-16 19:33:47,455 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:33:47,456 INFO L85 PathProgramCache]: Analyzing trace with hash -1470422724, now seen corresponding path program 1 times [2024-11-16 19:33:47,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:33:47,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049714369] [2024-11-16 19:33:47,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:33:47,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:33:47,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:33:48,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:33:48,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:33:48,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049714369] [2024-11-16 19:33:48,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049714369] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:33:48,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:33:48,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 19:33:48,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342049999] [2024-11-16 19:33:48,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:33:48,104 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 19:33:48,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:33:48,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 19:33:48,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 19:33:48,105 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 57 [2024-11-16 19:33:48,106 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 47 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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) [2024-11-16 19:33:48,106 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:33:48,106 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 57 [2024-11-16 19:33:48,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:33:48,313 INFO L124 PetriNetUnfolderBase]: 776/1380 cut-off events. [2024-11-16 19:33:48,313 INFO L125 PetriNetUnfolderBase]: For 22/22 co-relation queries the response was YES. [2024-11-16 19:33:48,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2463 conditions, 1380 events. 776/1380 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 7734 event pairs, 226 based on Foata normal form. 1/1281 useless extension candidates. Maximal degree in co-relation 2460. Up to 641 conditions per place. [2024-11-16 19:33:48,324 INFO L140 encePairwiseOnDemand]: 53/57 looper letters, 44 selfloop transitions, 3 changer transitions 1/66 dead transitions. [2024-11-16 19:33:48,326 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 66 transitions, 239 flow [2024-11-16 19:33:48,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 19:33:48,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-16 19:33:48,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 112 transitions. [2024-11-16 19:33:48,327 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6549707602339181 [2024-11-16 19:33:48,327 INFO L175 Difference]: Start difference. First operand has 45 places, 47 transitions, 100 flow. Second operand 3 states and 112 transitions. [2024-11-16 19:33:48,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 66 transitions, 239 flow [2024-11-16 19:33:48,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 66 transitions, 239 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-16 19:33:48,333 INFO L231 Difference]: Finished difference. Result has 48 places, 49 transitions, 119 flow [2024-11-16 19:33:48,334 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=119, PETRI_PLACES=48, PETRI_TRANSITIONS=49} [2024-11-16 19:33:48,335 INFO L277 CegarLoopForPetriNet]: 50 programPoint places, -2 predicate places. [2024-11-16 19:33:48,335 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 49 transitions, 119 flow [2024-11-16 19:33:48,335 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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) [2024-11-16 19:33:48,335 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:33:48,335 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:33:48,336 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 19:33:48,336 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-16 19:33:48,337 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:33:48,338 INFO L85 PathProgramCache]: Analyzing trace with hash 908693955, now seen corresponding path program 1 times [2024-11-16 19:33:48,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:33:48,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803928715] [2024-11-16 19:33:48,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:33:48,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:33:48,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:33:48,474 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:33:48,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:33:48,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803928715] [2024-11-16 19:33:48,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803928715] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:33:48,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:33:48,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 19:33:48,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405979329] [2024-11-16 19:33:48,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:33:48,477 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 19:33:48,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:33:48,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 19:33:48,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-16 19:33:48,511 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 57 [2024-11-16 19:33:48,511 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 49 transitions, 119 flow. Second operand has 5 states, 5 states have (on average 22.8) internal successors, (114), 5 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:33:48,512 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:33:48,512 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 57 [2024-11-16 19:33:48,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:33:48,853 INFO L124 PetriNetUnfolderBase]: 1312/2432 cut-off events. [2024-11-16 19:33:48,853 INFO L125 PetriNetUnfolderBase]: For 313/313 co-relation queries the response was YES. [2024-11-16 19:33:48,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4614 conditions, 2432 events. 1312/2432 cut-off events. For 313/313 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 15355 event pairs, 695 based on Foata normal form. 74/2264 useless extension candidates. Maximal degree in co-relation 4609. Up to 1014 conditions per place. [2024-11-16 19:33:48,915 INFO L140 encePairwiseOnDemand]: 44/57 looper letters, 72 selfloop transitions, 12 changer transitions 0/99 dead transitions. [2024-11-16 19:33:48,915 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 99 transitions, 407 flow [2024-11-16 19:33:48,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 19:33:48,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-16 19:33:48,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 189 transitions. [2024-11-16 19:33:48,918 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5526315789473685 [2024-11-16 19:33:48,918 INFO L175 Difference]: Start difference. First operand has 48 places, 49 transitions, 119 flow. Second operand 6 states and 189 transitions. [2024-11-16 19:33:48,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 99 transitions, 407 flow [2024-11-16 19:33:48,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 99 transitions, 402 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-16 19:33:48,921 INFO L231 Difference]: Finished difference. Result has 57 places, 60 transitions, 212 flow [2024-11-16 19:33:48,921 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=212, PETRI_PLACES=57, PETRI_TRANSITIONS=60} [2024-11-16 19:33:48,921 INFO L277 CegarLoopForPetriNet]: 50 programPoint places, 7 predicate places. [2024-11-16 19:33:48,922 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 60 transitions, 212 flow [2024-11-16 19:33:48,922 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.8) internal successors, (114), 5 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:33:48,922 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:33:48,922 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:33:48,923 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-16 19:33:48,923 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-16 19:33:48,923 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:33:48,923 INFO L85 PathProgramCache]: Analyzing trace with hash 670310682, now seen corresponding path program 1 times [2024-11-16 19:33:48,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:33:48,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285911761] [2024-11-16 19:33:48,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:33:48,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:33:48,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:33:49,026 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:33:49,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:33:49,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285911761] [2024-11-16 19:33:49,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285911761] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:33:49,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:33:49,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 19:33:49,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969082022] [2024-11-16 19:33:49,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:33:49,028 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 19:33:49,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:33:49,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 19:33:49,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-16 19:33:49,055 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 57 [2024-11-16 19:33:49,056 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 60 transitions, 212 flow. Second operand has 5 states, 5 states have (on average 22.4) internal successors, (112), 5 states have internal predecessors, (112), 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) [2024-11-16 19:33:49,056 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:33:49,056 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 57 [2024-11-16 19:33:49,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:33:49,350 INFO L124 PetriNetUnfolderBase]: 1088/1904 cut-off events. [2024-11-16 19:33:49,351 INFO L125 PetriNetUnfolderBase]: For 836/836 co-relation queries the response was YES. [2024-11-16 19:33:49,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4137 conditions, 1904 events. 1088/1904 cut-off events. For 836/836 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 10766 event pairs, 673 based on Foata normal form. 29/1830 useless extension candidates. Maximal degree in co-relation 4128. Up to 1210 conditions per place. [2024-11-16 19:33:49,363 INFO L140 encePairwiseOnDemand]: 45/57 looper letters, 32 selfloop transitions, 6 changer transitions 36/88 dead transitions. [2024-11-16 19:33:49,363 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 88 transitions, 440 flow [2024-11-16 19:33:49,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 19:33:49,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-16 19:33:49,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 175 transitions. [2024-11-16 19:33:49,365 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5116959064327485 [2024-11-16 19:33:49,365 INFO L175 Difference]: Start difference. First operand has 57 places, 60 transitions, 212 flow. Second operand 6 states and 175 transitions. [2024-11-16 19:33:49,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 88 transitions, 440 flow [2024-11-16 19:33:49,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 88 transitions, 440 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-16 19:33:49,370 INFO L231 Difference]: Finished difference. Result has 64 places, 52 transitions, 184 flow [2024-11-16 19:33:49,370 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=184, PETRI_PLACES=64, PETRI_TRANSITIONS=52} [2024-11-16 19:33:49,371 INFO L277 CegarLoopForPetriNet]: 50 programPoint places, 14 predicate places. [2024-11-16 19:33:49,372 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 52 transitions, 184 flow [2024-11-16 19:33:49,372 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.4) internal successors, (112), 5 states have internal predecessors, (112), 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) [2024-11-16 19:33:49,372 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:33:49,372 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:33:49,373 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-16 19:33:49,373 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-16 19:33:49,373 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:33:49,375 INFO L85 PathProgramCache]: Analyzing trace with hash -1721493232, now seen corresponding path program 1 times [2024-11-16 19:33:49,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:33:49,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449565758] [2024-11-16 19:33:49,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:33:49,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:33:49,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:33:49,515 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-16 19:33:49,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:33:49,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449565758] [2024-11-16 19:33:49,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449565758] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:33:49,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [409329953] [2024-11-16 19:33:49,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:33:49,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:33:49,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:33:49,521 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) [2024-11-16 19:33:49,523 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-16 19:33:49,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:33:49,632 INFO L255 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-16 19:33:49,641 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:33:49,748 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-16 19:33:49,749 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:33:49,824 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-16 19:33:49,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [409329953] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-16 19:33:49,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-16 19:33:49,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2024-11-16 19:33:49,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894693676] [2024-11-16 19:33:49,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:33:49,825 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 19:33:49,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:33:49,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 19:33:49,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-16 19:33:49,850 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 57 [2024-11-16 19:33:49,851 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 52 transitions, 184 flow. Second operand has 5 states, 5 states have (on average 21.6) internal successors, (108), 5 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:33:49,851 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:33:49,851 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 57 [2024-11-16 19:33:49,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:33:50,127 INFO L124 PetriNetUnfolderBase]: 1290/2161 cut-off events. [2024-11-16 19:33:50,127 INFO L125 PetriNetUnfolderBase]: For 1014/1014 co-relation queries the response was YES. [2024-11-16 19:33:50,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4857 conditions, 2161 events. 1290/2161 cut-off events. For 1014/1014 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 11906 event pairs, 506 based on Foata normal form. 0/1981 useless extension candidates. Maximal degree in co-relation 4845. Up to 971 conditions per place. [2024-11-16 19:33:50,144 INFO L140 encePairwiseOnDemand]: 51/57 looper letters, 49 selfloop transitions, 5 changer transitions 0/67 dead transitions. [2024-11-16 19:33:50,144 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 67 transitions, 342 flow [2024-11-16 19:33:50,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 19:33:50,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-16 19:33:50,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 129 transitions. [2024-11-16 19:33:50,146 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45263157894736844 [2024-11-16 19:33:50,146 INFO L175 Difference]: Start difference. First operand has 64 places, 52 transitions, 184 flow. Second operand 5 states and 129 transitions. [2024-11-16 19:33:50,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 67 transitions, 342 flow [2024-11-16 19:33:50,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 67 transitions, 294 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-11-16 19:33:50,151 INFO L231 Difference]: Finished difference. Result has 55 places, 53 transitions, 169 flow [2024-11-16 19:33:50,151 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=169, PETRI_PLACES=55, PETRI_TRANSITIONS=53} [2024-11-16 19:33:50,152 INFO L277 CegarLoopForPetriNet]: 50 programPoint places, 5 predicate places. [2024-11-16 19:33:50,152 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 53 transitions, 169 flow [2024-11-16 19:33:50,152 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.6) internal successors, (108), 5 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:33:50,153 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:33:50,153 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:33:50,174 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-16 19:33:50,359 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:33:50,360 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-16 19:33:50,360 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:33:50,361 INFO L85 PathProgramCache]: Analyzing trace with hash -207328948, now seen corresponding path program 1 times [2024-11-16 19:33:50,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:33:50,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537630155] [2024-11-16 19:33:50,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:33:50,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:33:50,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:33:50,529 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-16 19:33:50,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:33:50,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537630155] [2024-11-16 19:33:50,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537630155] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:33:50,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [736786860] [2024-11-16 19:33:50,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:33:50,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:33:50,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:33:50,533 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) [2024-11-16 19:33:50,535 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-16 19:33:50,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:33:50,642 INFO L255 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-16 19:33:50,644 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:33:50,742 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-16 19:33:50,742 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:33:50,810 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-16 19:33:50,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [736786860] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-16 19:33:50,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-16 19:33:50,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2024-11-16 19:33:50,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583973250] [2024-11-16 19:33:50,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:33:50,812 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 19:33:50,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:33:50,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 19:33:50,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-16 19:33:50,838 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 57 [2024-11-16 19:33:50,838 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 53 transitions, 169 flow. Second operand has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 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) [2024-11-16 19:33:50,838 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:33:50,839 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 57 [2024-11-16 19:33:50,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:33:51,057 INFO L124 PetriNetUnfolderBase]: 1168/2030 cut-off events. [2024-11-16 19:33:51,057 INFO L125 PetriNetUnfolderBase]: For 831/831 co-relation queries the response was YES. [2024-11-16 19:33:51,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4347 conditions, 2030 events. 1168/2030 cut-off events. For 831/831 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 11424 event pairs, 359 based on Foata normal form. 0/1872 useless extension candidates. Maximal degree in co-relation 4339. Up to 891 conditions per place. [2024-11-16 19:33:51,069 INFO L140 encePairwiseOnDemand]: 51/57 looper letters, 46 selfloop transitions, 5 changer transitions 0/65 dead transitions. [2024-11-16 19:33:51,069 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 65 transitions, 309 flow [2024-11-16 19:33:51,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 19:33:51,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-16 19:33:51,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 127 transitions. [2024-11-16 19:33:51,070 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4456140350877193 [2024-11-16 19:33:51,070 INFO L175 Difference]: Start difference. First operand has 55 places, 53 transitions, 169 flow. Second operand 5 states and 127 transitions. [2024-11-16 19:33:51,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 65 transitions, 309 flow [2024-11-16 19:33:51,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 65 transitions, 301 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-16 19:33:51,073 INFO L231 Difference]: Finished difference. Result has 59 places, 54 transitions, 186 flow [2024-11-16 19:33:51,073 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=163, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=186, PETRI_PLACES=59, PETRI_TRANSITIONS=54} [2024-11-16 19:33:51,074 INFO L277 CegarLoopForPetriNet]: 50 programPoint places, 9 predicate places. [2024-11-16 19:33:51,074 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 54 transitions, 186 flow [2024-11-16 19:33:51,075 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 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) [2024-11-16 19:33:51,075 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:33:51,075 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:33:51,092 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-16 19:33:51,275 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-16 19:33:51,276 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-16 19:33:51,277 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:33:51,277 INFO L85 PathProgramCache]: Analyzing trace with hash -183077395, now seen corresponding path program 1 times [2024-11-16 19:33:51,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:33:51,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498517817] [2024-11-16 19:33:51,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:33:51,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:33:51,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:33:51,393 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-16 19:33:51,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:33:51,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498517817] [2024-11-16 19:33:51,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498517817] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:33:51,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [644785533] [2024-11-16 19:33:51,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:33:51,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:33:51,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:33:51,397 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) [2024-11-16 19:33:51,399 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-16 19:33:51,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:33:51,502 INFO L255 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-16 19:33:51,504 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:33:51,562 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-16 19:33:51,563 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:33:51,620 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-16 19:33:51,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [644785533] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-16 19:33:51,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-16 19:33:51,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2024-11-16 19:33:51,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713178623] [2024-11-16 19:33:51,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:33:51,623 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 19:33:51,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:33:51,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 19:33:51,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-16 19:33:51,652 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 57 [2024-11-16 19:33:51,652 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 54 transitions, 186 flow. Second operand has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:33:51,652 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:33:51,653 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 57 [2024-11-16 19:33:51,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:33:51,867 INFO L124 PetriNetUnfolderBase]: 1007/1909 cut-off events. [2024-11-16 19:33:51,868 INFO L125 PetriNetUnfolderBase]: For 935/935 co-relation queries the response was YES. [2024-11-16 19:33:51,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4284 conditions, 1909 events. 1007/1909 cut-off events. For 935/935 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 11041 event pairs, 558 based on Foata normal form. 82/1883 useless extension candidates. Maximal degree in co-relation 4274. Up to 1113 conditions per place. [2024-11-16 19:33:51,880 INFO L140 encePairwiseOnDemand]: 52/57 looper letters, 49 selfloop transitions, 5 changer transitions 0/70 dead transitions. [2024-11-16 19:33:51,880 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 70 transitions, 348 flow [2024-11-16 19:33:51,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 19:33:51,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-16 19:33:51,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 135 transitions. [2024-11-16 19:33:51,881 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47368421052631576 [2024-11-16 19:33:51,882 INFO L175 Difference]: Start difference. First operand has 59 places, 54 transitions, 186 flow. Second operand 5 states and 135 transitions. [2024-11-16 19:33:51,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 70 transitions, 348 flow [2024-11-16 19:33:51,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 70 transitions, 340 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-16 19:33:51,885 INFO L231 Difference]: Finished difference. Result has 61 places, 55 transitions, 201 flow [2024-11-16 19:33:51,885 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=201, PETRI_PLACES=61, PETRI_TRANSITIONS=55} [2024-11-16 19:33:51,886 INFO L277 CegarLoopForPetriNet]: 50 programPoint places, 11 predicate places. [2024-11-16 19:33:51,886 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 55 transitions, 201 flow [2024-11-16 19:33:51,886 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:33:51,886 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:33:51,886 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:33:51,903 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-16 19:33:52,087 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:33:52,087 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-16 19:33:52,088 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:33:52,088 INFO L85 PathProgramCache]: Analyzing trace with hash 413957350, now seen corresponding path program 1 times [2024-11-16 19:33:52,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:33:52,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591716847] [2024-11-16 19:33:52,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:33:52,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:33:52,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:33:53,324 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-16 19:33:53,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:33:53,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591716847] [2024-11-16 19:33:53,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591716847] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:33:53,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [227889230] [2024-11-16 19:33:53,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:33:53,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:33:53,326 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:33:53,327 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) [2024-11-16 19:33:53,329 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-16 19:33:53,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:33:53,434 INFO L255 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-16 19:33:53,437 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:33:53,741 INFO L349 Elim1Store]: treesize reduction 36, result has 54.4 percent of original size [2024-11-16 19:33:53,742 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 36 treesize of output 58 [2024-11-16 19:33:55,003 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 19:33:55,004 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 107 treesize of output 499 [2024-11-16 19:34:00,486 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-16 19:34:00,486 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:34:24,900 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 19:34:24,900 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 38 treesize of output 83 [2024-11-16 19:34:25,686 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-16 19:34:25,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [227889230] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 19:34:25,689 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 19:34:25,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 8, 7] total 25 [2024-11-16 19:34:25,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859988532] [2024-11-16 19:34:25,689 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 19:34:25,690 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-16 19:34:25,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:34:25,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-16 19:34:25,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=549, Unknown=2, NotChecked=0, Total=650 [2024-11-16 19:34:29,700 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-16 19:34:33,727 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-16 19:34:37,753 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-16 19:34:41,774 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-16 19:34:45,836 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-16 19:34:45,836 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 57 [2024-11-16 19:34:45,837 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 55 transitions, 201 flow. Second operand has 26 states, 26 states have (on average 19.692307692307693) internal successors, (512), 26 states have internal predecessors, (512), 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) [2024-11-16 19:34:45,837 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:34:45,837 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 57 [2024-11-16 19:34:45,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:34:47,915 INFO L124 PetriNetUnfolderBase]: 4064/6739 cut-off events. [2024-11-16 19:34:47,915 INFO L125 PetriNetUnfolderBase]: For 5921/5921 co-relation queries the response was YES. [2024-11-16 19:34:47,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16842 conditions, 6739 events. 4064/6739 cut-off events. For 5921/5921 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 41668 event pairs, 140 based on Foata normal form. 1/6555 useless extension candidates. Maximal degree in co-relation 16831. Up to 2629 conditions per place. [2024-11-16 19:34:47,959 INFO L140 encePairwiseOnDemand]: 46/57 looper letters, 182 selfloop transitions, 47 changer transitions 1/243 dead transitions. [2024-11-16 19:34:47,960 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 243 transitions, 1320 flow [2024-11-16 19:34:47,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-16 19:34:47,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-16 19:34:47,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 507 transitions. [2024-11-16 19:34:47,962 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49415204678362573 [2024-11-16 19:34:47,962 INFO L175 Difference]: Start difference. First operand has 61 places, 55 transitions, 201 flow. Second operand 18 states and 507 transitions. [2024-11-16 19:34:47,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 243 transitions, 1320 flow [2024-11-16 19:34:47,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 243 transitions, 1308 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-16 19:34:47,971 INFO L231 Difference]: Finished difference. Result has 87 places, 100 transitions, 601 flow [2024-11-16 19:34:47,971 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=601, PETRI_PLACES=87, PETRI_TRANSITIONS=100} [2024-11-16 19:34:47,972 INFO L277 CegarLoopForPetriNet]: 50 programPoint places, 37 predicate places. [2024-11-16 19:34:47,972 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 100 transitions, 601 flow [2024-11-16 19:34:47,973 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 19.692307692307693) internal successors, (512), 26 states have internal predecessors, (512), 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) [2024-11-16 19:34:47,973 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:34:47,973 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:34:47,991 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-16 19:34:48,177 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:34:48,178 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-16 19:34:48,178 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:34:48,178 INFO L85 PathProgramCache]: Analyzing trace with hash 1392773498, now seen corresponding path program 2 times [2024-11-16 19:34:48,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:34:48,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375852110] [2024-11-16 19:34:48,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:34:48,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:34:48,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:34:49,521 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-16 19:34:49,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:34:49,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375852110] [2024-11-16 19:34:49,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375852110] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:34:49,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1085296122] [2024-11-16 19:34:49,522 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 19:34:49,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:34:49,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:34:49,525 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) [2024-11-16 19:34:49,526 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-16 19:34:49,627 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 19:34:49,627 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:34:49,629 INFO L255 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-11-16 19:34:49,634 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:34:49,647 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-16 19:34:49,707 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2024-11-16 19:34:49,708 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2024-11-16 19:34:49,785 INFO L349 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2024-11-16 19:34:49,786 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 16 treesize of output 18 [2024-11-16 19:34:50,055 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-16 19:34:50,055 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 24 [2024-11-16 19:34:50,569 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 19:34:50,569 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 23 [2024-11-16 19:34:50,603 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-16 19:34:50,603 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:34:50,876 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 19:34:50,877 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 356 treesize of output 336 [2024-11-16 19:34:51,024 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 73 [2024-11-16 19:34:51,211 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 19:34:51,212 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 438 treesize of output 374 [2024-11-16 19:34:54,053 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2024-11-16 19:34:54,203 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2024-11-16 19:34:58,484 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2024-11-16 19:35:05,698 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts.