./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/popl20-bad-dot-product.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 023d838f 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-bad-dot-product.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 39e90898aa78f5642c5c7d6f9df6b2e15e069a046a9465d5d61576c4b07f46b8 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 10:31:28,170 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 10:31:28,256 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-10 10:31:28,266 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 10:31:28,266 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 10:31:28,286 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 10:31:28,287 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 10:31:28,287 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 10:31:28,288 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 10:31:28,288 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 10:31:28,288 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 10:31:28,289 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 10:31:28,289 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 10:31:28,290 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 10:31:28,290 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 10:31:28,291 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 10:31:28,291 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-10 10:31:28,291 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 10:31:28,292 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 10:31:28,292 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 10:31:28,295 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 10:31:28,295 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-10 10:31:28,296 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 10:31:28,299 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-10 10:31:28,300 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 10:31:28,300 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 10:31:28,300 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-10 10:31:28,300 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 10:31:28,301 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 10:31:28,301 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 10:31:28,301 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 10:31:28,301 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 10:31:28,302 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 10:31:28,302 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 10:31:28,302 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 10:31:28,302 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-10 10:31:28,303 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 10:31:28,303 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 10:31:28,303 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 10:31:28,304 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 10:31:28,304 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 10:31:28,304 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 10:31:28,305 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 39e90898aa78f5642c5c7d6f9df6b2e15e069a046a9465d5d61576c4b07f46b8 [2024-11-10 10:31:28,560 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 10:31:28,580 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 10:31:28,584 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 10:31:28,585 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 10:31:28,585 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 10:31:28,586 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-bad-dot-product.wvr.c [2024-11-10 10:31:30,056 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 10:31:30,248 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 10:31:30,249 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-dot-product.wvr.c [2024-11-10 10:31:30,258 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a3eadd209/1bd43456535d4f39a82b97e860f595c7/FLAG5dc558647 [2024-11-10 10:31:30,270 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a3eadd209/1bd43456535d4f39a82b97e860f595c7 [2024-11-10 10:31:30,272 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 10:31:30,274 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 10:31:30,275 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 10:31:30,275 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 10:31:30,280 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 10:31:30,281 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:31:30" (1/1) ... [2024-11-10 10:31:30,282 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bca1f80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:31:30, skipping insertion in model container [2024-11-10 10:31:30,282 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:31:30" (1/1) ... [2024-11-10 10:31:30,303 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 10:31:30,493 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-bad-dot-product.wvr.c[2904,2917] [2024-11-10 10:31:30,504 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 10:31:30,515 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 10:31:30,536 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-bad-dot-product.wvr.c[2904,2917] [2024-11-10 10:31:30,540 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 10:31:30,558 INFO L204 MainTranslator]: Completed translation [2024-11-10 10:31:30,559 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:31:30 WrapperNode [2024-11-10 10:31:30,559 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 10:31:30,560 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 10:31:30,560 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 10:31:30,560 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 10:31:30,567 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:31:30" (1/1) ... [2024-11-10 10:31:30,575 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:31:30" (1/1) ... [2024-11-10 10:31:30,604 INFO L138 Inliner]: procedures = 25, calls = 40, calls flagged for inlining = 16, calls inlined = 22, statements flattened = 264 [2024-11-10 10:31:30,605 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 10:31:30,606 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 10:31:30,606 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 10:31:30,606 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 10:31:30,615 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:31:30" (1/1) ... [2024-11-10 10:31:30,616 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:31:30" (1/1) ... [2024-11-10 10:31:30,619 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:31:30" (1/1) ... [2024-11-10 10:31:30,636 INFO L175 MemorySlicer]: Split 13 memory accesses to 2 slices as follows [11, 2]. 85 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [0, 2]. The 2 writes are split as follows [2, 0]. [2024-11-10 10:31:30,636 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:31:30" (1/1) ... [2024-11-10 10:31:30,637 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:31:30" (1/1) ... [2024-11-10 10:31:30,645 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:31:30" (1/1) ... [2024-11-10 10:31:30,646 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:31:30" (1/1) ... [2024-11-10 10:31:30,648 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:31:30" (1/1) ... [2024-11-10 10:31:30,649 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:31:30" (1/1) ... [2024-11-10 10:31:30,653 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 10:31:30,654 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 10:31:30,654 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 10:31:30,654 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 10:31:30,655 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:31:30" (1/1) ... [2024-11-10 10:31:30,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 10:31:30,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:31:30,702 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) [2024-11-10 10:31:30,705 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 [2024-11-10 10:31:30,757 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 10:31:30,757 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-10 10:31:30,758 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-10 10:31:30,758 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-10 10:31:30,759 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-10 10:31:30,759 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-10 10:31:30,759 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-10 10:31:30,759 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 10:31:30,759 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-10 10:31:30,759 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-10 10:31:30,759 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-10 10:31:30,759 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-10 10:31:30,759 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-10 10:31:30,759 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-10 10:31:30,760 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 10:31:30,760 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 10:31:30,760 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-10 10:31:30,760 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-10 10:31:30,763 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-10 10:31:30,907 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 10:31:30,910 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 10:31:31,481 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-10 10:31:31,482 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 10:31:31,779 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 10:31:31,780 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 10:31:31,781 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:31:31 BoogieIcfgContainer [2024-11-10 10:31:31,781 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 10:31:31,784 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 10:31:31,786 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 10:31:31,791 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 10:31:31,792 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 10:31:30" (1/3) ... [2024-11-10 10:31:31,793 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b274e86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:31:31, skipping insertion in model container [2024-11-10 10:31:31,793 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:31:30" (2/3) ... [2024-11-10 10:31:31,795 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b274e86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:31:31, skipping insertion in model container [2024-11-10 10:31:31,795 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:31:31" (3/3) ... [2024-11-10 10:31:31,797 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-dot-product.wvr.c [2024-11-10 10:31:31,819 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 10:31:31,820 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-10 10:31:31,820 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-10 10:31:31,886 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-10 10:31:31,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 59 places, 65 transitions, 151 flow [2024-11-10 10:31:31,989 INFO L124 PetriNetUnfolderBase]: 16/62 cut-off events. [2024-11-10 10:31:31,989 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-10 10:31:31,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 62 events. 16/62 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 125 event pairs, 0 based on Foata normal form. 0/45 useless extension candidates. Maximal degree in co-relation 48. Up to 2 conditions per place. [2024-11-10 10:31:31,996 INFO L82 GeneralOperation]: Start removeDead. Operand has 59 places, 65 transitions, 151 flow [2024-11-10 10:31:32,001 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 55 places, 61 transitions, 140 flow [2024-11-10 10:31:32,014 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 10:31:32,021 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;@265365e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 10:31:32,021 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-10 10:31:32,044 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 10:31:32,045 INFO L124 PetriNetUnfolderBase]: 16/60 cut-off events. [2024-11-10 10:31:32,045 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-10 10:31:32,045 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:31:32,046 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] [2024-11-10 10:31:32,047 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)] === [2024-11-10 10:31:32,052 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:31:32,053 INFO L85 PathProgramCache]: Analyzing trace with hash 183477485, now seen corresponding path program 1 times [2024-11-10 10:31:32,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:31:32,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683679021] [2024-11-10 10:31:32,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:31:32,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:31:32,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:31:32,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:31:32,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:31:32,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683679021] [2024-11-10 10:31:32,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683679021] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:31:32,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:31:32,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 10:31:32,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12194645] [2024-11-10 10:31:32,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:31:32,283 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-10 10:31:32,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:31:32,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-10 10:31:32,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-10 10:31:32,343 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 65 [2024-11-10 10:31:32,345 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 61 transitions, 140 flow. Second operand has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 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) [2024-11-10 10:31:32,345 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:31:32,345 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 65 [2024-11-10 10:31:32,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:31:32,969 INFO L124 PetriNetUnfolderBase]: 3406/4756 cut-off events. [2024-11-10 10:31:32,969 INFO L125 PetriNetUnfolderBase]: For 262/262 co-relation queries the response was YES. [2024-11-10 10:31:32,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9631 conditions, 4756 events. 3406/4756 cut-off events. For 262/262 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 23105 event pairs, 2534 based on Foata normal form. 437/4677 useless extension candidates. Maximal degree in co-relation 9080. Up to 4652 conditions per place. [2024-11-10 10:31:33,077 INFO L140 encePairwiseOnDemand]: 57/65 looper letters, 42 selfloop transitions, 0 changer transitions 0/53 dead transitions. [2024-11-10 10:31:33,077 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 53 transitions, 208 flow [2024-11-10 10:31:33,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-10 10:31:33,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-10 10:31:33,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 78 transitions. [2024-11-10 10:31:33,092 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-11-10 10:31:33,094 INFO L175 Difference]: Start difference. First operand has 55 places, 61 transitions, 140 flow. Second operand 2 states and 78 transitions. [2024-11-10 10:31:33,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 53 transitions, 208 flow [2024-11-10 10:31:33,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 53 transitions, 196 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-10 10:31:33,109 INFO L231 Difference]: Finished difference. Result has 50 places, 53 transitions, 112 flow [2024-11-10 10:31:33,111 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=112, PETRI_PLACES=50, PETRI_TRANSITIONS=53} [2024-11-10 10:31:33,116 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, -5 predicate places. [2024-11-10 10:31:33,117 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 53 transitions, 112 flow [2024-11-10 10:31:33,117 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 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) [2024-11-10 10:31:33,117 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:31:33,117 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] [2024-11-10 10:31:33,118 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 10:31:33,118 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)] === [2024-11-10 10:31:33,120 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:31:33,120 INFO L85 PathProgramCache]: Analyzing trace with hash 788903049, now seen corresponding path program 1 times [2024-11-10 10:31:33,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:31:33,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7773653] [2024-11-10 10:31:33,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:31:33,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:31:33,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:31:33,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:31:33,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:31:33,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7773653] [2024-11-10 10:31:33,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7773653] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:31:33,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:31:33,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 10:31:33,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576733280] [2024-11-10 10:31:33,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:31:33,371 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 10:31:33,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:31:33,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 10:31:33,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 10:31:33,374 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 65 [2024-11-10 10:31:33,374 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 53 transitions, 112 flow. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:31:33,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:31:33,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 65 [2024-11-10 10:31:33,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:31:34,130 INFO L124 PetriNetUnfolderBase]: 5764/8035 cut-off events. [2024-11-10 10:31:34,130 INFO L125 PetriNetUnfolderBase]: For 105/105 co-relation queries the response was YES. [2024-11-10 10:31:34,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16023 conditions, 8035 events. 5764/8035 cut-off events. For 105/105 co-relation queries the response was YES. Maximal size of possible extension queue 430. Compared 42593 event pairs, 1694 based on Foata normal form. 1/7189 useless extension candidates. Maximal degree in co-relation 16020. Up to 4968 conditions per place. [2024-11-10 10:31:34,188 INFO L140 encePairwiseOnDemand]: 60/65 looper letters, 69 selfloop transitions, 4 changer transitions 1/85 dead transitions. [2024-11-10 10:31:34,188 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 85 transitions, 329 flow [2024-11-10 10:31:34,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 10:31:34,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 10:31:34,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 117 transitions. [2024-11-10 10:31:34,192 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-11-10 10:31:34,193 INFO L175 Difference]: Start difference. First operand has 50 places, 53 transitions, 112 flow. Second operand 3 states and 117 transitions. [2024-11-10 10:31:34,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 85 transitions, 329 flow [2024-11-10 10:31:34,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 85 transitions, 329 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 10:31:34,197 INFO L231 Difference]: Finished difference. Result has 53 places, 56 transitions, 138 flow [2024-11-10 10:31:34,198 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=138, PETRI_PLACES=53, PETRI_TRANSITIONS=56} [2024-11-10 10:31:34,199 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, -2 predicate places. [2024-11-10 10:31:34,199 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 56 transitions, 138 flow [2024-11-10 10:31:34,199 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:31:34,199 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:31:34,200 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:31:34,200 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-10 10:31:34,200 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)] === [2024-11-10 10:31:34,201 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:31:34,202 INFO L85 PathProgramCache]: Analyzing trace with hash -1314354326, now seen corresponding path program 1 times [2024-11-10 10:31:34,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:31:34,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041416892] [2024-11-10 10:31:34,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:31:34,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:31:34,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:31:34,431 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 10:31:34,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:31:34,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041416892] [2024-11-10 10:31:34,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041416892] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:31:34,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:31:34,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 10:31:34,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010800650] [2024-11-10 10:31:34,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:31:34,435 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 10:31:34,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:31:34,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 10:31:34,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 10:31:34,455 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 65 [2024-11-10 10:31:34,455 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 56 transitions, 138 flow. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 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) [2024-11-10 10:31:34,456 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:31:34,456 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 65 [2024-11-10 10:31:34,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:31:35,221 INFO L124 PetriNetUnfolderBase]: 5765/8042 cut-off events. [2024-11-10 10:31:35,221 INFO L125 PetriNetUnfolderBase]: For 387/387 co-relation queries the response was YES. [2024-11-10 10:31:35,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17154 conditions, 8042 events. 5765/8042 cut-off events. For 387/387 co-relation queries the response was YES. Maximal size of possible extension queue 430. Compared 42592 event pairs, 4179 based on Foata normal form. 1/7184 useless extension candidates. Maximal degree in co-relation 17149. Up to 7861 conditions per place. [2024-11-10 10:31:35,275 INFO L140 encePairwiseOnDemand]: 60/65 looper letters, 46 selfloop transitions, 2 changer transitions 4/61 dead transitions. [2024-11-10 10:31:35,276 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 61 transitions, 252 flow [2024-11-10 10:31:35,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 10:31:35,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 10:31:35,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 110 transitions. [2024-11-10 10:31:35,279 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3384615384615385 [2024-11-10 10:31:35,279 INFO L175 Difference]: Start difference. First operand has 53 places, 56 transitions, 138 flow. Second operand 5 states and 110 transitions. [2024-11-10 10:31:35,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 61 transitions, 252 flow [2024-11-10 10:31:35,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 61 transitions, 248 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 10:31:35,283 INFO L231 Difference]: Finished difference. Result has 59 places, 57 transitions, 150 flow [2024-11-10 10:31:35,283 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=150, PETRI_PLACES=59, PETRI_TRANSITIONS=57} [2024-11-10 10:31:35,284 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 4 predicate places. [2024-11-10 10:31:35,285 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 57 transitions, 150 flow [2024-11-10 10:31:35,285 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 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) [2024-11-10 10:31:35,285 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:31:35,286 INFO L204 CegarLoopForPetriNet]: trace histogram [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] [2024-11-10 10:31:35,286 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-10 10:31:35,286 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)] === [2024-11-10 10:31:35,287 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:31:35,287 INFO L85 PathProgramCache]: Analyzing trace with hash 1761834245, now seen corresponding path program 1 times [2024-11-10 10:31:35,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:31:35,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136669318] [2024-11-10 10:31:35,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:31:35,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:31:35,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:31:35,500 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-10 10:31:35,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:31:35,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136669318] [2024-11-10 10:31:35,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136669318] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:31:35,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:31:35,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 10:31:35,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824864400] [2024-11-10 10:31:35,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:31:35,506 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 10:31:35,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:31:35,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 10:31:35,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 10:31:35,520 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 65 [2024-11-10 10:31:35,521 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 57 transitions, 150 flow. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 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) [2024-11-10 10:31:35,521 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:31:35,521 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 65 [2024-11-10 10:31:35,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:31:36,526 INFO L124 PetriNetUnfolderBase]: 7077/10017 cut-off events. [2024-11-10 10:31:36,527 INFO L125 PetriNetUnfolderBase]: For 587/587 co-relation queries the response was YES. [2024-11-10 10:31:36,548 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20715 conditions, 10017 events. 7077/10017 cut-off events. For 587/587 co-relation queries the response was YES. Maximal size of possible extension queue 442. Compared 55475 event pairs, 2307 based on Foata normal form. 0/8841 useless extension candidates. Maximal degree in co-relation 20707. Up to 5494 conditions per place. [2024-11-10 10:31:36,599 INFO L140 encePairwiseOnDemand]: 60/65 looper letters, 67 selfloop transitions, 4 changer transitions 0/81 dead transitions. [2024-11-10 10:31:36,600 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 81 transitions, 350 flow [2024-11-10 10:31:36,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 10:31:36,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 10:31:36,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 118 transitions. [2024-11-10 10:31:36,605 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45384615384615384 [2024-11-10 10:31:36,605 INFO L175 Difference]: Start difference. First operand has 59 places, 57 transitions, 150 flow. Second operand 4 states and 118 transitions. [2024-11-10 10:31:36,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 81 transitions, 350 flow [2024-11-10 10:31:36,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 81 transitions, 344 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-11-10 10:31:36,609 INFO L231 Difference]: Finished difference. Result has 59 places, 58 transitions, 165 flow [2024-11-10 10:31:36,610 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=165, PETRI_PLACES=59, PETRI_TRANSITIONS=58} [2024-11-10 10:31:36,611 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 4 predicate places. [2024-11-10 10:31:36,612 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 58 transitions, 165 flow [2024-11-10 10:31:36,612 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 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) [2024-11-10 10:31:36,612 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:31:36,612 INFO L204 CegarLoopForPetriNet]: trace histogram [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] [2024-11-10 10:31:36,612 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-10 10:31:36,613 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)] === [2024-11-10 10:31:36,613 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:31:36,613 INFO L85 PathProgramCache]: Analyzing trace with hash 2027136865, now seen corresponding path program 1 times [2024-11-10 10:31:36,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:31:36,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13653692] [2024-11-10 10:31:36,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:31:36,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:31:36,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:31:36,813 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 10:31:36,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:31:36,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13653692] [2024-11-10 10:31:36,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13653692] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:31:36,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1570262875] [2024-11-10 10:31:36,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:31:36,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:31:36,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:31:36,818 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) [2024-11-10 10:31:36,820 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-10 10:31:36,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:31:36,931 INFO L255 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-10 10:31:36,936 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:31:37,037 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 10:31:37,039 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:31:37,169 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 10:31:37,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1570262875] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-10 10:31:37,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-10 10:31:37,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 9 [2024-11-10 10:31:37,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463719814] [2024-11-10 10:31:37,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:31:37,171 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 10:31:37,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:31:37,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 10:31:37,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-10 10:31:37,183 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 65 [2024-11-10 10:31:37,183 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 58 transitions, 165 flow. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 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) [2024-11-10 10:31:37,183 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:31:37,183 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 65 [2024-11-10 10:31:37,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:31:38,183 INFO L124 PetriNetUnfolderBase]: 7946/11554 cut-off events. [2024-11-10 10:31:38,184 INFO L125 PetriNetUnfolderBase]: For 3019/3021 co-relation queries the response was YES. [2024-11-10 10:31:38,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25949 conditions, 11554 events. 7946/11554 cut-off events. For 3019/3021 co-relation queries the response was YES. Maximal size of possible extension queue 421. Compared 64959 event pairs, 3850 based on Foata normal form. 0/10244 useless extension candidates. Maximal degree in co-relation 25941. Up to 6450 conditions per place. [2024-11-10 10:31:38,275 INFO L140 encePairwiseOnDemand]: 59/65 looper letters, 72 selfloop transitions, 5 changer transitions 0/85 dead transitions. [2024-11-10 10:31:38,276 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 85 transitions, 397 flow [2024-11-10 10:31:38,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 10:31:38,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 10:31:38,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 126 transitions. [2024-11-10 10:31:38,279 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.38769230769230767 [2024-11-10 10:31:38,279 INFO L175 Difference]: Start difference. First operand has 59 places, 58 transitions, 165 flow. Second operand 5 states and 126 transitions. [2024-11-10 10:31:38,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 85 transitions, 397 flow [2024-11-10 10:31:38,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 85 transitions, 390 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 10:31:38,301 INFO L231 Difference]: Finished difference. Result has 63 places, 59 transitions, 184 flow [2024-11-10 10:31:38,304 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=184, PETRI_PLACES=63, PETRI_TRANSITIONS=59} [2024-11-10 10:31:38,305 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 8 predicate places. [2024-11-10 10:31:38,306 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 59 transitions, 184 flow [2024-11-10 10:31:38,307 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 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) [2024-11-10 10:31:38,308 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:31:38,308 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, 1, 1, 1, 1, 1] [2024-11-10 10:31:38,328 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-10 10:31:38,509 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 [2024-11-10 10:31:38,509 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)] === [2024-11-10 10:31:38,510 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:31:38,510 INFO L85 PathProgramCache]: Analyzing trace with hash 1564850700, now seen corresponding path program 1 times [2024-11-10 10:31:38,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:31:38,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966050660] [2024-11-10 10:31:38,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:31:38,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:31:38,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:31:38,733 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 10:31:38,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:31:38,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966050660] [2024-11-10 10:31:38,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966050660] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:31:38,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:31:38,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-10 10:31:38,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801607711] [2024-11-10 10:31:38,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:31:38,734 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 10:31:38,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:31:38,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 10:31:38,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-10 10:31:38,751 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 65 [2024-11-10 10:31:38,752 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 59 transitions, 184 flow. Second operand has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 6 states have internal predecessors, (106), 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) [2024-11-10 10:31:38,752 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:31:38,752 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 65 [2024-11-10 10:31:38,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:31:40,787 INFO L124 PetriNetUnfolderBase]: 12770/18607 cut-off events. [2024-11-10 10:31:40,787 INFO L125 PetriNetUnfolderBase]: For 10069/10582 co-relation queries the response was YES. [2024-11-10 10:31:40,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44697 conditions, 18607 events. 12770/18607 cut-off events. For 10069/10582 co-relation queries the response was YES. Maximal size of possible extension queue 721. Compared 115439 event pairs, 7797 based on Foata normal form. 0/17088 useless extension candidates. Maximal degree in co-relation 44687. Up to 9795 conditions per place. [2024-11-10 10:31:40,964 INFO L140 encePairwiseOnDemand]: 56/65 looper letters, 134 selfloop transitions, 9 changer transitions 0/152 dead transitions. [2024-11-10 10:31:40,964 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 152 transitions, 741 flow [2024-11-10 10:31:40,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-10 10:31:40,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-10 10:31:40,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 212 transitions. [2024-11-10 10:31:40,966 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46593406593406594 [2024-11-10 10:31:40,966 INFO L175 Difference]: Start difference. First operand has 63 places, 59 transitions, 184 flow. Second operand 7 states and 212 transitions. [2024-11-10 10:31:40,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 152 transitions, 741 flow [2024-11-10 10:31:41,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 152 transitions, 732 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-10 10:31:41,016 INFO L231 Difference]: Finished difference. Result has 71 places, 67 transitions, 256 flow [2024-11-10 10:31:41,016 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=256, PETRI_PLACES=71, PETRI_TRANSITIONS=67} [2024-11-10 10:31:41,017 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 16 predicate places. [2024-11-10 10:31:41,017 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 67 transitions, 256 flow [2024-11-10 10:31:41,018 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 6 states have internal predecessors, (106), 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) [2024-11-10 10:31:41,018 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:31:41,018 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, 1, 1, 1, 1, 1] [2024-11-10 10:31:41,018 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-10 10:31:41,019 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)] === [2024-11-10 10:31:41,019 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:31:41,019 INFO L85 PathProgramCache]: Analyzing trace with hash -1685301610, now seen corresponding path program 1 times [2024-11-10 10:31:41,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:31:41,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248318322] [2024-11-10 10:31:41,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:31:41,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:31:41,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:31:41,223 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 10:31:41,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:31:41,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248318322] [2024-11-10 10:31:41,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248318322] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:31:41,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:31:41,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-10 10:31:41,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111286060] [2024-11-10 10:31:41,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:31:41,225 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 10:31:41,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:31:41,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 10:31:41,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-10 10:31:41,240 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 65 [2024-11-10 10:31:41,241 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 67 transitions, 256 flow. Second operand has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 6 states have internal predecessors, (106), 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) [2024-11-10 10:31:41,241 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:31:41,241 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 65 [2024-11-10 10:31:41,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:31:42,321 INFO L124 PetriNetUnfolderBase]: 11459/16885 cut-off events. [2024-11-10 10:31:42,321 INFO L125 PetriNetUnfolderBase]: For 16429/16911 co-relation queries the response was YES. [2024-11-10 10:31:42,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43476 conditions, 16885 events. 11459/16885 cut-off events. For 16429/16911 co-relation queries the response was YES. Maximal size of possible extension queue 626. Compared 104136 event pairs, 7396 based on Foata normal form. 0/15595 useless extension candidates. Maximal degree in co-relation 43461. Up to 9795 conditions per place. [2024-11-10 10:31:42,477 INFO L140 encePairwiseOnDemand]: 56/65 looper letters, 118 selfloop transitions, 9 changer transitions 0/136 dead transitions. [2024-11-10 10:31:42,477 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 136 transitions, 748 flow [2024-11-10 10:31:42,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-10 10:31:42,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-10 10:31:42,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 199 transitions. [2024-11-10 10:31:42,479 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43736263736263736 [2024-11-10 10:31:42,479 INFO L175 Difference]: Start difference. First operand has 71 places, 67 transitions, 256 flow. Second operand 7 states and 199 transitions. [2024-11-10 10:31:42,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 136 transitions, 748 flow [2024-11-10 10:31:42,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 136 transitions, 746 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 10:31:42,517 INFO L231 Difference]: Finished difference. Result has 79 places, 72 transitions, 313 flow [2024-11-10 10:31:42,517 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=313, PETRI_PLACES=79, PETRI_TRANSITIONS=72} [2024-11-10 10:31:42,518 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 24 predicate places. [2024-11-10 10:31:42,518 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 72 transitions, 313 flow [2024-11-10 10:31:42,518 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 6 states have internal predecessors, (106), 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) [2024-11-10 10:31:42,519 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:31:42,519 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] [2024-11-10 10:31:42,519 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-10 10:31:42,519 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)] === [2024-11-10 10:31:42,520 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:31:42,520 INFO L85 PathProgramCache]: Analyzing trace with hash 1855939185, now seen corresponding path program 1 times [2024-11-10 10:31:42,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:31:42,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746046199] [2024-11-10 10:31:42,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:31:42,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:31:42,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:31:42,715 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 10:31:42,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:31:42,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746046199] [2024-11-10 10:31:42,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746046199] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:31:42,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1663283677] [2024-11-10 10:31:42,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:31:42,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:31:42,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:31:42,721 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) [2024-11-10 10:31:42,723 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-10 10:31:42,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:31:42,837 INFO L255 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-10 10:31:42,839 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:31:42,965 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 23 treesize of output 7 [2024-11-10 10:31:42,986 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 10:31:42,986 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:31:43,032 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 25 treesize of output 9 [2024-11-10 10:31:43,089 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 10:31:43,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1663283677] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:31:43,090 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:31:43,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-11-10 10:31:43,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632737111] [2024-11-10 10:31:43,090 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:31:43,091 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-10 10:31:43,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:31:43,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-10 10:31:43,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2024-11-10 10:31:43,115 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 65 [2024-11-10 10:31:43,116 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 72 transitions, 313 flow. Second operand has 15 states, 15 states have (on average 15.8) internal successors, (237), 15 states have internal predecessors, (237), 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) [2024-11-10 10:31:43,116 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:31:43,116 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 65 [2024-11-10 10:31:43,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:31:44,988 INFO L124 PetriNetUnfolderBase]: 17055/24968 cut-off events. [2024-11-10 10:31:44,988 INFO L125 PetriNetUnfolderBase]: For 28962/29754 co-relation queries the response was YES. [2024-11-10 10:31:45,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69083 conditions, 24968 events. 17055/24968 cut-off events. For 28962/29754 co-relation queries the response was YES. Maximal size of possible extension queue 922. Compared 162560 event pairs, 9775 based on Foata normal form. 0/23163 useless extension candidates. Maximal degree in co-relation 69065. Up to 9795 conditions per place. [2024-11-10 10:31:45,394 INFO L140 encePairwiseOnDemand]: 56/65 looper letters, 149 selfloop transitions, 17 changer transitions 0/175 dead transitions. [2024-11-10 10:31:45,394 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 175 transitions, 1041 flow [2024-11-10 10:31:45,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-10 10:31:45,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-10 10:31:45,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 239 transitions. [2024-11-10 10:31:45,397 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.40854700854700854 [2024-11-10 10:31:45,397 INFO L175 Difference]: Start difference. First operand has 79 places, 72 transitions, 313 flow. Second operand 9 states and 239 transitions. [2024-11-10 10:31:45,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 175 transitions, 1041 flow [2024-11-10 10:31:45,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 175 transitions, 1034 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-10 10:31:45,566 INFO L231 Difference]: Finished difference. Result has 89 places, 80 transitions, 427 flow [2024-11-10 10:31:45,566 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=427, PETRI_PLACES=89, PETRI_TRANSITIONS=80} [2024-11-10 10:31:45,567 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 34 predicate places. [2024-11-10 10:31:45,567 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 80 transitions, 427 flow [2024-11-10 10:31:45,567 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 15.8) internal successors, (237), 15 states have internal predecessors, (237), 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) [2024-11-10 10:31:45,567 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:31:45,567 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] [2024-11-10 10:31:45,581 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-10 10:31:45,768 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,SelfDestructingSolverStorable7 [2024-11-10 10:31:45,768 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)] === [2024-11-10 10:31:45,769 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:31:45,769 INFO L85 PathProgramCache]: Analyzing trace with hash -996645855, now seen corresponding path program 1 times [2024-11-10 10:31:45,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:31:45,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079728233] [2024-11-10 10:31:45,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:31:45,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:31:45,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:31:45,958 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 10:31:45,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:31:45,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079728233] [2024-11-10 10:31:45,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079728233] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:31:45,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1412900603] [2024-11-10 10:31:45,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:31:45,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:31:45,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:31:45,962 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) [2024-11-10 10:31:45,964 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-10 10:31:46,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:31:46,075 INFO L255 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-10 10:31:46,078 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:31:46,187 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 23 treesize of output 7 [2024-11-10 10:31:46,203 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 10:31:46,203 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:31:46,241 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 25 treesize of output 9 [2024-11-10 10:31:46,332 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 10:31:46,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1412900603] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:31:46,333 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:31:46,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-11-10 10:31:46,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618170987] [2024-11-10 10:31:46,334 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:31:46,334 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-10 10:31:46,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:31:46,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-10 10:31:46,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2024-11-10 10:31:46,369 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 65 [2024-11-10 10:31:46,369 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 80 transitions, 427 flow. Second operand has 15 states, 15 states have (on average 15.133333333333333) internal successors, (227), 15 states have internal predecessors, (227), 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) [2024-11-10 10:31:46,370 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:31:46,370 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 65 [2024-11-10 10:31:46,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:31:48,522 INFO L124 PetriNetUnfolderBase]: 15744/23242 cut-off events. [2024-11-10 10:31:48,522 INFO L125 PetriNetUnfolderBase]: For 49931/50721 co-relation queries the response was YES. [2024-11-10 10:31:48,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70670 conditions, 23242 events. 15744/23242 cut-off events. For 49931/50721 co-relation queries the response was YES. Maximal size of possible extension queue 827. Compared 150474 event pairs, 9455 based on Foata normal form. 0/21644 useless extension candidates. Maximal degree in co-relation 70647. Up to 9795 conditions per place. [2024-11-10 10:31:48,823 INFO L140 encePairwiseOnDemand]: 56/65 looper letters, 133 selfloop transitions, 17 changer transitions 0/159 dead transitions. [2024-11-10 10:31:48,823 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 159 transitions, 1111 flow [2024-11-10 10:31:48,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-10 10:31:48,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-10 10:31:48,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 226 transitions. [2024-11-10 10:31:48,825 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.38632478632478634 [2024-11-10 10:31:48,825 INFO L175 Difference]: Start difference. First operand has 89 places, 80 transitions, 427 flow. Second operand 9 states and 226 transitions. [2024-11-10 10:31:48,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 159 transitions, 1111 flow [2024-11-10 10:31:48,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 159 transitions, 1086 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-11-10 10:31:48,957 INFO L231 Difference]: Finished difference. Result has 97 places, 85 transitions, 498 flow [2024-11-10 10:31:48,957 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=402, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=498, PETRI_PLACES=97, PETRI_TRANSITIONS=85} [2024-11-10 10:31:48,957 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 42 predicate places. [2024-11-10 10:31:48,958 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 85 transitions, 498 flow [2024-11-10 10:31:48,958 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 15.133333333333333) internal successors, (227), 15 states have internal predecessors, (227), 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) [2024-11-10 10:31:48,958 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:31:48,958 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 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] [2024-11-10 10:31:48,971 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-10 10:31:49,159 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:31:49,159 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-10 10:31:49,160 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:31:49,160 INFO L85 PathProgramCache]: Analyzing trace with hash -2065811140, now seen corresponding path program 2 times [2024-11-10 10:31:49,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:31:49,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268281187] [2024-11-10 10:31:49,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:31:49,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:31:49,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:31:49,904 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-10 10:31:49,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:31:49,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268281187] [2024-11-10 10:31:49,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268281187] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:31:49,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1926278625] [2024-11-10 10:31:49,905 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 10:31:49,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:31:49,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:31:49,907 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) [2024-11-10 10:31:49,909 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-10 10:31:50,009 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 10:31:50,010 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:31:50,011 INFO L255 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-10 10:31:50,014 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:31:50,421 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 7 [2024-11-10 10:31:50,444 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-10 10:31:50,445 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:31:50,597 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 10:31:50,598 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 17 [2024-11-10 10:31:50,881 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-10 10:31:50,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1926278625] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:31:50,882 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:31:50,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 12] total 36 [2024-11-10 10:31:50,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637761943] [2024-11-10 10:31:50,882 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:31:50,883 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-10 10:31:50,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:31:50,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-10 10:31:50,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=1171, Unknown=0, NotChecked=0, Total=1332 [2024-11-10 10:31:51,031 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 65 [2024-11-10 10:31:51,032 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 85 transitions, 498 flow. Second operand has 37 states, 37 states have (on average 12.54054054054054) internal successors, (464), 37 states have internal predecessors, (464), 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) [2024-11-10 10:31:51,032 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:31:51,032 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 65 [2024-11-10 10:31:51,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:32:02,328 INFO L124 PetriNetUnfolderBase]: 64406/91500 cut-off events. [2024-11-10 10:32:02,328 INFO L125 PetriNetUnfolderBase]: For 171572/171572 co-relation queries the response was YES. [2024-11-10 10:32:02,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 283736 conditions, 91500 events. 64406/91500 cut-off events. For 171572/171572 co-relation queries the response was YES. Maximal size of possible extension queue 2599. Compared 640769 event pairs, 27587 based on Foata normal form. 0/84985 useless extension candidates. Maximal degree in co-relation 283710. Up to 27286 conditions per place. [2024-11-10 10:32:03,222 INFO L140 encePairwiseOnDemand]: 45/65 looper letters, 710 selfloop transitions, 115 changer transitions 0/832 dead transitions. [2024-11-10 10:32:03,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 832 transitions, 5148 flow [2024-11-10 10:32:03,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-11-10 10:32:03,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2024-11-10 10:32:03,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 1106 transitions. [2024-11-10 10:32:03,227 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4362919132149901 [2024-11-10 10:32:03,227 INFO L175 Difference]: Start difference. First operand has 97 places, 85 transitions, 498 flow. Second operand 39 states and 1106 transitions. [2024-11-10 10:32:03,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 832 transitions, 5148 flow [2024-11-10 10:32:04,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 832 transitions, 4926 flow, removed 99 selfloop flow, removed 5 redundant places. [2024-11-10 10:32:04,865 INFO L231 Difference]: Finished difference. Result has 164 places, 218 transitions, 1776 flow [2024-11-10 10:32:04,865 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=474, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=1776, PETRI_PLACES=164, PETRI_TRANSITIONS=218} [2024-11-10 10:32:04,866 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 109 predicate places. [2024-11-10 10:32:04,866 INFO L471 AbstractCegarLoop]: Abstraction has has 164 places, 218 transitions, 1776 flow [2024-11-10 10:32:04,866 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 12.54054054054054) internal successors, (464), 37 states have internal predecessors, (464), 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) [2024-11-10 10:32:04,867 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:32:04,867 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 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] [2024-11-10 10:32:04,879 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-10 10:32:05,067 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:32:05,067 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-10 10:32:05,068 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:32:05,068 INFO L85 PathProgramCache]: Analyzing trace with hash 455904006, now seen corresponding path program 2 times [2024-11-10 10:32:05,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:32:05,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389003097] [2024-11-10 10:32:05,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:32:05,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:32:05,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:32:06,463 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:32:06,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:32:06,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389003097] [2024-11-10 10:32:06,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389003097] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:32:06,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1646480625] [2024-11-10 10:32:06,464 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 10:32:06,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:32:06,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:32:06,466 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) [2024-11-10 10:32:06,467 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-10 10:32:06,574 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 10:32:06,575 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:32:06,576 INFO L255 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-10 10:32:06,578 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:32:07,008 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 7 [2024-11-10 10:32:07,034 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-10 10:32:07,034 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:32:07,134 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 10:32:07,134 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 17 [2024-11-10 10:32:07,388 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-10 10:32:07,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1646480625] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:32:07,389 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:32:07,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 13, 12] total 40 [2024-11-10 10:32:07,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545160488] [2024-11-10 10:32:07,389 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:32:07,390 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-10 10:32:07,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:32:07,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-10 10:32:07,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=207, Invalid=1433, Unknown=0, NotChecked=0, Total=1640 [2024-11-10 10:32:07,476 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 65 [2024-11-10 10:32:07,477 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 218 transitions, 1776 flow. Second operand has 41 states, 41 states have (on average 12.195121951219512) internal successors, (500), 41 states have internal predecessors, (500), 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) [2024-11-10 10:32:07,477 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:32:07,477 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 65 [2024-11-10 10:32:07,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand