./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/goblint-regression/36-apron_21-traces-cluster-based_true.i --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/goblint-regression/36-apron_21-traces-cluster-based_true.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash cec155e54548239c459fec40910e358deb5fad2ceffa658bfdeefddd1bc9e166 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 10:25:38,228 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 10:25:38,281 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-10 10:25:38,284 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 10:25:38,285 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 10:25:38,311 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 10:25:38,312 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 10:25:38,313 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 10:25:38,313 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 10:25:38,314 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 10:25:38,315 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 10:25:38,315 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 10:25:38,316 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 10:25:38,316 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 10:25:38,316 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 10:25:38,316 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 10:25:38,317 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-10 10:25:38,317 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 10:25:38,317 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 10:25:38,317 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 10:25:38,317 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 10:25:38,321 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-10 10:25:38,321 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 10:25:38,321 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-10 10:25:38,322 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 10:25:38,322 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 10:25:38,322 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-10 10:25:38,322 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 10:25:38,322 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 10:25:38,323 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 10:25:38,323 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 10:25:38,323 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 10:25:38,323 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 10:25:38,323 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 10:25:38,323 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 10:25:38,324 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-10 10:25:38,324 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 10:25:38,324 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 10:25:38,324 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 10:25:38,324 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 10:25:38,324 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 10:25:38,325 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 10:25:38,325 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cec155e54548239c459fec40910e358deb5fad2ceffa658bfdeefddd1bc9e166 [2024-11-10 10:25:38,592 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 10:25:38,620 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 10:25:38,622 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 10:25:38,623 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 10:25:38,624 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 10:25:38,625 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/36-apron_21-traces-cluster-based_true.i [2024-11-10 10:25:39,978 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 10:25:40,184 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 10:25:40,185 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/36-apron_21-traces-cluster-based_true.i [2024-11-10 10:25:40,198 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c602c0b30/d3c1d6528a5b49518699dd4fc95b5e91/FLAG9582df22a [2024-11-10 10:25:40,209 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c602c0b30/d3c1d6528a5b49518699dd4fc95b5e91 [2024-11-10 10:25:40,211 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 10:25:40,212 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 10:25:40,213 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 10:25:40,213 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 10:25:40,217 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 10:25:40,217 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:25:40" (1/1) ... [2024-11-10 10:25:40,218 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4090fdf4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:25:40, skipping insertion in model container [2024-11-10 10:25:40,218 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:25:40" (1/1) ... [2024-11-10 10:25:40,254 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 10:25:40,394 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/goblint-regression/36-apron_21-traces-cluster-based_true.i[1092,1105] [2024-11-10 10:25:40,534 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 10:25:40,554 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 10:25:40,564 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/goblint-regression/36-apron_21-traces-cluster-based_true.i[1092,1105] [2024-11-10 10:25:40,587 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 10:25:40,617 INFO L204 MainTranslator]: Completed translation [2024-11-10 10:25:40,618 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:25:40 WrapperNode [2024-11-10 10:25:40,618 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 10:25:40,619 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 10:25:40,619 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 10:25:40,619 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 10:25:40,625 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:25:40" (1/1) ... [2024-11-10 10:25:40,636 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:25:40" (1/1) ... [2024-11-10 10:25:40,653 INFO L138 Inliner]: procedures = 165, calls = 41, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 137 [2024-11-10 10:25:40,654 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 10:25:40,654 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 10:25:40,654 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 10:25:40,655 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 10:25:40,663 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:25:40" (1/1) ... [2024-11-10 10:25:40,663 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:25:40" (1/1) ... [2024-11-10 10:25:40,665 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:25:40" (1/1) ... [2024-11-10 10:25:40,676 INFO L175 MemorySlicer]: Split 12 memory accesses to 3 slices as follows [2, 5, 5]. 42 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [2, 5, 5]. The 0 writes are split as follows [0, 0, 0]. [2024-11-10 10:25:40,677 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:25:40" (1/1) ... [2024-11-10 10:25:40,677 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:25:40" (1/1) ... [2024-11-10 10:25:40,681 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:25:40" (1/1) ... [2024-11-10 10:25:40,682 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:25:40" (1/1) ... [2024-11-10 10:25:40,683 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:25:40" (1/1) ... [2024-11-10 10:25:40,684 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:25:40" (1/1) ... [2024-11-10 10:25:40,686 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 10:25:40,686 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 10:25:40,686 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 10:25:40,687 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 10:25:40,687 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:25:40" (1/1) ... [2024-11-10 10:25:40,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 10:25:40,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:25:40,723 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 10:25:40,725 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 10:25:40,761 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2024-11-10 10:25:40,761 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2024-11-10 10:25:40,762 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-10 10:25:40,762 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 10:25:40,762 INFO L130 BoogieDeclarations]: Found specification of procedure t3_fun [2024-11-10 10:25:40,762 INFO L138 BoogieDeclarations]: Found implementation of procedure t3_fun [2024-11-10 10:25:40,762 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-10 10:25:40,762 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-10 10:25:40,762 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 10:25:40,762 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-10 10:25:40,762 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-10 10:25:40,762 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-10 10:25:40,762 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 10:25:40,762 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 10:25:40,764 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 10:25:40,915 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 10:25:40,917 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 10:25:41,136 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-10 10:25:41,136 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 10:25:41,318 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 10:25:41,318 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 10:25:41,319 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:25:41 BoogieIcfgContainer [2024-11-10 10:25:41,319 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 10:25:41,321 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 10:25:41,323 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 10:25:41,325 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 10:25:41,326 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 10:25:40" (1/3) ... [2024-11-10 10:25:41,327 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6748f84f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:25:41, skipping insertion in model container [2024-11-10 10:25:41,327 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:25:40" (2/3) ... [2024-11-10 10:25:41,330 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6748f84f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:25:41, skipping insertion in model container [2024-11-10 10:25:41,330 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:25:41" (3/3) ... [2024-11-10 10:25:41,334 INFO L112 eAbstractionObserver]: Analyzing ICFG 36-apron_21-traces-cluster-based_true.i [2024-11-10 10:25:41,350 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 10:25:41,350 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-11-10 10:25:41,350 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-10 10:25:41,398 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-10 10:25:41,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 73 places, 68 transitions, 148 flow [2024-11-10 10:25:41,462 INFO L124 PetriNetUnfolderBase]: 5/65 cut-off events. [2024-11-10 10:25:41,463 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 10:25:41,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 65 events. 5/65 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 152 event pairs, 0 based on Foata normal form. 0/56 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2024-11-10 10:25:41,467 INFO L82 GeneralOperation]: Start removeDead. Operand has 73 places, 68 transitions, 148 flow [2024-11-10 10:25:41,472 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 70 places, 65 transitions, 139 flow [2024-11-10 10:25:41,482 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 10:25:41,489 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;@5a08e11, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 10:25:41,489 INFO L334 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-11-10 10:25:41,502 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 10:25:41,502 INFO L124 PetriNetUnfolderBase]: 1/33 cut-off events. [2024-11-10 10:25:41,502 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 10:25:41,502 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:25:41,503 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:25:41,504 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2024-11-10 10:25:41,508 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:25:41,508 INFO L85 PathProgramCache]: Analyzing trace with hash -2012173132, now seen corresponding path program 1 times [2024-11-10 10:25:41,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:25:41,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941385782] [2024-11-10 10:25:41,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:25:41,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:25:41,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:25:41,870 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 10:25:41,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:25:41,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941385782] [2024-11-10 10:25:41,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941385782] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:25:41,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:25:41,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 10:25:41,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450433274] [2024-11-10 10:25:41,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:25:41,881 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 10:25:41,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:25:41,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 10:25:41,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-10 10:25:41,918 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 68 [2024-11-10 10:25:41,921 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 65 transitions, 139 flow. Second operand has 5 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 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 10:25:41,921 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:25:41,921 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 68 [2024-11-10 10:25:41,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:25:46,716 INFO L124 PetriNetUnfolderBase]: 40583/60768 cut-off events. [2024-11-10 10:25:46,717 INFO L125 PetriNetUnfolderBase]: For 126/126 co-relation queries the response was YES. [2024-11-10 10:25:46,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117487 conditions, 60768 events. 40583/60768 cut-off events. For 126/126 co-relation queries the response was YES. Maximal size of possible extension queue 1494. Compared 453558 event pairs, 9447 based on Foata normal form. 4488/64618 useless extension candidates. Maximal degree in co-relation 117476. Up to 14925 conditions per place. [2024-11-10 10:25:47,175 INFO L140 encePairwiseOnDemand]: 57/68 looper letters, 211 selfloop transitions, 11 changer transitions 0/238 dead transitions. [2024-11-10 10:25:47,176 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 238 transitions, 950 flow [2024-11-10 10:25:47,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-10 10:25:47,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-10 10:25:47,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 398 transitions. [2024-11-10 10:25:47,190 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7316176470588235 [2024-11-10 10:25:47,194 INFO L175 Difference]: Start difference. First operand has 70 places, 65 transitions, 139 flow. Second operand 8 states and 398 transitions. [2024-11-10 10:25:47,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 238 transitions, 950 flow [2024-11-10 10:25:47,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 238 transitions, 940 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-10 10:25:47,208 INFO L231 Difference]: Finished difference. Result has 78 places, 69 transitions, 189 flow [2024-11-10 10:25:47,210 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=189, PETRI_PLACES=78, PETRI_TRANSITIONS=69} [2024-11-10 10:25:47,213 INFO L277 CegarLoopForPetriNet]: 70 programPoint places, 8 predicate places. [2024-11-10 10:25:47,214 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 69 transitions, 189 flow [2024-11-10 10:25:47,214 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 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 10:25:47,214 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:25:47,214 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:25:47,215 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 10:25:47,215 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2024-11-10 10:25:47,215 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:25:47,215 INFO L85 PathProgramCache]: Analyzing trace with hash 748343388, now seen corresponding path program 1 times [2024-11-10 10:25:47,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:25:47,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295162840] [2024-11-10 10:25:47,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:25:47,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:25:47,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:25:47,344 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 10:25:47,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:25:47,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295162840] [2024-11-10 10:25:47,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295162840] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:25:47,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:25:47,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 10:25:47,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668102129] [2024-11-10 10:25:47,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:25:47,346 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 10:25:47,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:25:47,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 10:25:47,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-10 10:25:47,349 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 68 [2024-11-10 10:25:47,350 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 69 transitions, 189 flow. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 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 10:25:47,350 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:25:47,350 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 68 [2024-11-10 10:25:47,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:25:53,194 INFO L124 PetriNetUnfolderBase]: 54392/82525 cut-off events. [2024-11-10 10:25:53,195 INFO L125 PetriNetUnfolderBase]: For 16185/16185 co-relation queries the response was YES. [2024-11-10 10:25:53,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 177228 conditions, 82525 events. 54392/82525 cut-off events. For 16185/16185 co-relation queries the response was YES. Maximal size of possible extension queue 2219. Compared 649884 event pairs, 11965 based on Foata normal form. 0/81040 useless extension candidates. Maximal degree in co-relation 177214. Up to 32684 conditions per place. [2024-11-10 10:25:53,721 INFO L140 encePairwiseOnDemand]: 57/68 looper letters, 204 selfloop transitions, 17 changer transitions 0/237 dead transitions. [2024-11-10 10:25:53,721 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 237 transitions, 1106 flow [2024-11-10 10:25:53,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-10 10:25:53,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-10 10:25:53,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 341 transitions. [2024-11-10 10:25:53,730 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6268382352941176 [2024-11-10 10:25:53,730 INFO L175 Difference]: Start difference. First operand has 78 places, 69 transitions, 189 flow. Second operand 8 states and 341 transitions. [2024-11-10 10:25:53,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 237 transitions, 1106 flow [2024-11-10 10:25:54,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 237 transitions, 1106 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 10:25:54,863 INFO L231 Difference]: Finished difference. Result has 89 places, 82 transitions, 288 flow [2024-11-10 10:25:54,864 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=288, PETRI_PLACES=89, PETRI_TRANSITIONS=82} [2024-11-10 10:25:54,864 INFO L277 CegarLoopForPetriNet]: 70 programPoint places, 19 predicate places. [2024-11-10 10:25:54,865 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 82 transitions, 288 flow [2024-11-10 10:25:54,865 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 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 10:25:54,865 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:25:54,865 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:25:54,865 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-10 10:25:54,865 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2024-11-10 10:25:54,866 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:25:54,866 INFO L85 PathProgramCache]: Analyzing trace with hash -201667651, now seen corresponding path program 1 times [2024-11-10 10:25:54,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:25:54,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501970188] [2024-11-10 10:25:54,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:25:54,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:25:54,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:25:54,958 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 10:25:54,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:25:54,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501970188] [2024-11-10 10:25:54,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501970188] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:25:54,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:25:54,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 10:25:54,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474981431] [2024-11-10 10:25:54,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:25:54,961 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 10:25:54,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:25:54,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 10:25:54,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-10 10:25:54,964 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 68 [2024-11-10 10:25:54,964 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 82 transitions, 288 flow. Second operand has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 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 10:25:54,964 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:25:54,965 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 68 [2024-11-10 10:25:54,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:26:02,845 INFO L124 PetriNetUnfolderBase]: 69275/108991 cut-off events. [2024-11-10 10:26:02,846 INFO L125 PetriNetUnfolderBase]: For 45990/46473 co-relation queries the response was YES. [2024-11-10 10:26:03,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 255920 conditions, 108991 events. 69275/108991 cut-off events. For 45990/46473 co-relation queries the response was YES. Maximal size of possible extension queue 3256. Compared 942166 event pairs, 25930 based on Foata normal form. 0/107448 useless extension candidates. Maximal degree in co-relation 255900. Up to 49249 conditions per place. [2024-11-10 10:26:03,665 INFO L140 encePairwiseOnDemand]: 61/68 looper letters, 227 selfloop transitions, 17 changer transitions 3/266 dead transitions. [2024-11-10 10:26:03,665 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 266 transitions, 1440 flow [2024-11-10 10:26:03,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-10 10:26:03,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-10 10:26:03,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 351 transitions. [2024-11-10 10:26:03,667 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6452205882352942 [2024-11-10 10:26:03,667 INFO L175 Difference]: Start difference. First operand has 89 places, 82 transitions, 288 flow. Second operand 8 states and 351 transitions. [2024-11-10 10:26:03,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 266 transitions, 1440 flow [2024-11-10 10:26:07,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 266 transitions, 1440 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 10:26:07,914 INFO L231 Difference]: Finished difference. Result has 100 places, 94 transitions, 397 flow [2024-11-10 10:26:07,914 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=397, PETRI_PLACES=100, PETRI_TRANSITIONS=94} [2024-11-10 10:26:07,915 INFO L277 CegarLoopForPetriNet]: 70 programPoint places, 30 predicate places. [2024-11-10 10:26:07,915 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 94 transitions, 397 flow [2024-11-10 10:26:07,915 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 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 10:26:07,916 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:26:07,916 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:26:07,916 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-10 10:26:07,916 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2024-11-10 10:26:07,917 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:26:07,917 INFO L85 PathProgramCache]: Analyzing trace with hash -1617683842, now seen corresponding path program 1 times [2024-11-10 10:26:07,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:26:07,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329888412] [2024-11-10 10:26:07,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:26:07,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:26:07,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:26:08,026 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 10:26:08,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:26:08,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329888412] [2024-11-10 10:26:08,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329888412] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:26:08,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:26:08,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 10:26:08,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763256732] [2024-11-10 10:26:08,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:26:08,031 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 10:26:08,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:26:08,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 10:26:08,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 10:26:08,032 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 68 [2024-11-10 10:26:08,033 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 94 transitions, 397 flow. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 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 10:26:08,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:26:08,033 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 68 [2024-11-10 10:26:08,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:26:13,715 INFO L124 PetriNetUnfolderBase]: 49230/80063 cut-off events. [2024-11-10 10:26:13,716 INFO L125 PetriNetUnfolderBase]: For 54192/55549 co-relation queries the response was YES. [2024-11-10 10:26:14,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 208358 conditions, 80063 events. 49230/80063 cut-off events. For 54192/55549 co-relation queries the response was YES. Maximal size of possible extension queue 2926. Compared 721055 event pairs, 18179 based on Foata normal form. 3452/83345 useless extension candidates. Maximal degree in co-relation 208332. Up to 43975 conditions per place. [2024-11-10 10:26:14,281 INFO L140 encePairwiseOnDemand]: 55/68 looper letters, 126 selfloop transitions, 13 changer transitions 0/160 dead transitions. [2024-11-10 10:26:14,281 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 160 transitions, 982 flow [2024-11-10 10:26:14,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 10:26:14,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 10:26:14,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 146 transitions. [2024-11-10 10:26:14,283 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7156862745098039 [2024-11-10 10:26:14,283 INFO L175 Difference]: Start difference. First operand has 100 places, 94 transitions, 397 flow. Second operand 3 states and 146 transitions. [2024-11-10 10:26:14,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 160 transitions, 982 flow [2024-11-10 10:26:17,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 160 transitions, 982 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 10:26:17,986 INFO L231 Difference]: Finished difference. Result has 103 places, 102 transitions, 468 flow [2024-11-10 10:26:17,986 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=397, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=468, PETRI_PLACES=103, PETRI_TRANSITIONS=102} [2024-11-10 10:26:17,986 INFO L277 CegarLoopForPetriNet]: 70 programPoint places, 33 predicate places. [2024-11-10 10:26:17,987 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 102 transitions, 468 flow [2024-11-10 10:26:17,987 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 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 10:26:17,987 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:26:17,987 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] [2024-11-10 10:26:17,987 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-10 10:26:17,987 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2024-11-10 10:26:17,988 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:26:17,988 INFO L85 PathProgramCache]: Analyzing trace with hash 918235001, now seen corresponding path program 1 times [2024-11-10 10:26:17,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:26:17,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971070626] [2024-11-10 10:26:17,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:26:17,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:26:18,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:26:18,123 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 10:26:18,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:26:18,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971070626] [2024-11-10 10:26:18,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971070626] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:26:18,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:26:18,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 10:26:18,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642161821] [2024-11-10 10:26:18,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:26:18,125 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 10:26:18,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:26:18,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 10:26:18,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-10 10:26:18,126 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 68 [2024-11-10 10:26:18,126 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 102 transitions, 468 flow. Second operand has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:26:18,126 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:26:18,126 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 68 [2024-11-10 10:26:18,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:26:21,276 INFO L124 PetriNetUnfolderBase]: 24224/41566 cut-off events. [2024-11-10 10:26:21,276 INFO L125 PetriNetUnfolderBase]: For 36567/37639 co-relation queries the response was YES. [2024-11-10 10:26:21,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118535 conditions, 41566 events. 24224/41566 cut-off events. For 36567/37639 co-relation queries the response was YES. Maximal size of possible extension queue 1325. Compared 360417 event pairs, 7113 based on Foata normal form. 1484/42941 useless extension candidates. Maximal degree in co-relation 118507. Up to 21998 conditions per place. [2024-11-10 10:26:21,588 INFO L140 encePairwiseOnDemand]: 61/68 looper letters, 111 selfloop transitions, 10 changer transitions 0/142 dead transitions. [2024-11-10 10:26:21,588 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 142 transitions, 885 flow [2024-11-10 10:26:21,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 10:26:21,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 10:26:21,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 151 transitions. [2024-11-10 10:26:21,592 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5551470588235294 [2024-11-10 10:26:21,592 INFO L175 Difference]: Start difference. First operand has 103 places, 102 transitions, 468 flow. Second operand 4 states and 151 transitions. [2024-11-10 10:26:21,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 142 transitions, 885 flow [2024-11-10 10:26:22,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 142 transitions, 868 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 10:26:22,436 INFO L231 Difference]: Finished difference. Result has 105 places, 102 transitions, 475 flow [2024-11-10 10:26:22,436 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=455, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=475, PETRI_PLACES=105, PETRI_TRANSITIONS=102} [2024-11-10 10:26:22,437 INFO L277 CegarLoopForPetriNet]: 70 programPoint places, 35 predicate places. [2024-11-10 10:26:22,437 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 102 transitions, 475 flow [2024-11-10 10:26:22,437 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:26:22,438 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:26:22,438 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] [2024-11-10 10:26:22,438 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-10 10:26:22,438 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2024-11-10 10:26:22,438 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:26:22,438 INFO L85 PathProgramCache]: Analyzing trace with hash -42456877, now seen corresponding path program 1 times [2024-11-10 10:26:22,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:26:22,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546822119] [2024-11-10 10:26:22,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:26:22,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:26:22,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:26:22,828 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 10:26:22,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:26:22,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546822119] [2024-11-10 10:26:22,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546822119] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:26:22,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:26:22,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-10 10:26:22,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383084170] [2024-11-10 10:26:22,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:26:22,829 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 10:26:22,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:26:22,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 10:26:22,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-10 10:26:22,840 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 68 [2024-11-10 10:26:22,840 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 102 transitions, 475 flow. Second operand has 6 states, 6 states have (on average 22.0) internal successors, (132), 6 states have internal predecessors, (132), 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 10:26:22,840 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:26:22,840 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 68 [2024-11-10 10:26:22,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:26:26,023 INFO L124 PetriNetUnfolderBase]: 27130/43776 cut-off events. [2024-11-10 10:26:26,023 INFO L125 PetriNetUnfolderBase]: For 40180/41134 co-relation queries the response was YES. [2024-11-10 10:26:26,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128475 conditions, 43776 events. 27130/43776 cut-off events. For 40180/41134 co-relation queries the response was YES. Maximal size of possible extension queue 1328. Compared 354889 event pairs, 5735 based on Foata normal form. 649/44346 useless extension candidates. Maximal degree in co-relation 128446. Up to 13198 conditions per place. [2024-11-10 10:26:26,381 INFO L140 encePairwiseOnDemand]: 62/68 looper letters, 211 selfloop transitions, 27 changer transitions 27/283 dead transitions. [2024-11-10 10:26:26,382 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 283 transitions, 1866 flow [2024-11-10 10:26:26,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-10 10:26:26,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-10 10:26:26,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 335 transitions. [2024-11-10 10:26:26,384 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6158088235294118 [2024-11-10 10:26:26,384 INFO L175 Difference]: Start difference. First operand has 105 places, 102 transitions, 475 flow. Second operand 8 states and 335 transitions. [2024-11-10 10:26:26,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 283 transitions, 1866 flow [2024-11-10 10:26:27,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 283 transitions, 1812 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-10 10:26:27,251 INFO L231 Difference]: Finished difference. Result has 106 places, 107 transitions, 568 flow [2024-11-10 10:26:27,251 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=451, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=568, PETRI_PLACES=106, PETRI_TRANSITIONS=107} [2024-11-10 10:26:27,251 INFO L277 CegarLoopForPetriNet]: 70 programPoint places, 36 predicate places. [2024-11-10 10:26:27,252 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 107 transitions, 568 flow [2024-11-10 10:26:27,252 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.0) internal successors, (132), 6 states have internal predecessors, (132), 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 10:26:27,252 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:26:27,252 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] [2024-11-10 10:26:27,252 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-10 10:26:27,252 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2024-11-10 10:26:27,253 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:26:27,253 INFO L85 PathProgramCache]: Analyzing trace with hash -922909252, now seen corresponding path program 1 times [2024-11-10 10:26:27,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:26:27,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426468911] [2024-11-10 10:26:27,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:26:27,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:26:27,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:26:27,411 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 10:26:27,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:26:27,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426468911] [2024-11-10 10:26:27,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426468911] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:26:27,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:26:27,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-10 10:26:27,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853894068] [2024-11-10 10:26:27,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:26:27,413 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 10:26:27,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:26:27,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 10:26:27,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-10 10:26:27,427 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 68 [2024-11-10 10:26:27,428 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 107 transitions, 568 flow. Second operand has 6 states, 6 states have (on average 21.5) internal successors, (129), 6 states have internal predecessors, (129), 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 10:26:27,428 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:26:27,428 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 68 [2024-11-10 10:26:27,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:26:30,203 INFO L124 PetriNetUnfolderBase]: 23757/38224 cut-off events. [2024-11-10 10:26:30,204 INFO L125 PetriNetUnfolderBase]: For 38278/38349 co-relation queries the response was YES. [2024-11-10 10:26:30,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113489 conditions, 38224 events. 23757/38224 cut-off events. For 38278/38349 co-relation queries the response was YES. Maximal size of possible extension queue 1040. Compared 299822 event pairs, 4938 based on Foata normal form. 714/38907 useless extension candidates. Maximal degree in co-relation 113461. Up to 8092 conditions per place. [2024-11-10 10:26:30,460 INFO L140 encePairwiseOnDemand]: 56/68 looper letters, 207 selfloop transitions, 41 changer transitions 33/297 dead transitions. [2024-11-10 10:26:30,460 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 297 transitions, 1929 flow [2024-11-10 10:26:30,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-10 10:26:30,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-10 10:26:30,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 426 transitions. [2024-11-10 10:26:30,462 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5220588235294118 [2024-11-10 10:26:30,462 INFO L175 Difference]: Start difference. First operand has 106 places, 107 transitions, 568 flow. Second operand 12 states and 426 transitions. [2024-11-10 10:26:30,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 297 transitions, 1929 flow [2024-11-10 10:26:30,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 297 transitions, 1926 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-10 10:26:30,993 INFO L231 Difference]: Finished difference. Result has 119 places, 119 transitions, 742 flow [2024-11-10 10:26:30,993 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=565, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=742, PETRI_PLACES=119, PETRI_TRANSITIONS=119} [2024-11-10 10:26:30,994 INFO L277 CegarLoopForPetriNet]: 70 programPoint places, 49 predicate places. [2024-11-10 10:26:30,994 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 119 transitions, 742 flow [2024-11-10 10:26:30,994 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.5) internal successors, (129), 6 states have internal predecessors, (129), 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 10:26:30,994 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:26:30,994 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 10:26:30,994 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-10 10:26:30,994 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2024-11-10 10:26:30,995 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:26:30,995 INFO L85 PathProgramCache]: Analyzing trace with hash 828471837, now seen corresponding path program 1 times [2024-11-10 10:26:30,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:26:30,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798654778] [2024-11-10 10:26:30,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:26:30,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:26:31,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:26:31,153 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 10:26:31,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:26:31,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798654778] [2024-11-10 10:26:31,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798654778] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:26:31,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:26:31,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-10 10:26:31,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889332127] [2024-11-10 10:26:31,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:26:31,154 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 10:26:31,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:26:31,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 10:26:31,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-10 10:26:31,163 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 68 [2024-11-10 10:26:31,164 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 119 transitions, 742 flow. Second operand has 6 states, 6 states have (on average 22.833333333333332) internal successors, (137), 6 states have internal predecessors, (137), 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 10:26:31,164 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:26:31,164 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 68 [2024-11-10 10:26:31,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:26:33,967 INFO L124 PetriNetUnfolderBase]: 22059/36131 cut-off events. [2024-11-10 10:26:33,968 INFO L125 PetriNetUnfolderBase]: For 54471/54964 co-relation queries the response was YES. [2024-11-10 10:26:34,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115385 conditions, 36131 events. 22059/36131 cut-off events. For 54471/54964 co-relation queries the response was YES. Maximal size of possible extension queue 948. Compared 284749 event pairs, 5815 based on Foata normal form. 422/36513 useless extension candidates. Maximal degree in co-relation 115353. Up to 7584 conditions per place. [2024-11-10 10:26:34,129 INFO L140 encePairwiseOnDemand]: 61/68 looper letters, 111 selfloop transitions, 20 changer transitions 150/295 dead transitions. [2024-11-10 10:26:34,129 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 295 transitions, 2139 flow [2024-11-10 10:26:34,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-10 10:26:34,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-10 10:26:34,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 409 transitions. [2024-11-10 10:26:34,130 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5467914438502673 [2024-11-10 10:26:34,131 INFO L175 Difference]: Start difference. First operand has 119 places, 119 transitions, 742 flow. Second operand 11 states and 409 transitions. [2024-11-10 10:26:34,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 295 transitions, 2139 flow [2024-11-10 10:26:34,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 295 transitions, 2074 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-11-10 10:26:34,572 INFO L231 Difference]: Finished difference. Result has 121 places, 82 transitions, 457 flow [2024-11-10 10:26:34,572 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=695, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=457, PETRI_PLACES=121, PETRI_TRANSITIONS=82} [2024-11-10 10:26:34,576 INFO L277 CegarLoopForPetriNet]: 70 programPoint places, 51 predicate places. [2024-11-10 10:26:34,577 INFO L471 AbstractCegarLoop]: Abstraction has has 121 places, 82 transitions, 457 flow [2024-11-10 10:26:34,577 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.833333333333332) internal successors, (137), 6 states have internal predecessors, (137), 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 10:26:34,577 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:26:34,577 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:26:34,577 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-10 10:26:34,577 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2024-11-10 10:26:34,577 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:26:34,577 INFO L85 PathProgramCache]: Analyzing trace with hash -2059581342, now seen corresponding path program 1 times [2024-11-10 10:26:34,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:26:34,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047043137] [2024-11-10 10:26:34,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:26:34,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:26:34,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:26:34,787 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 10:26:34,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:26:34,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047043137] [2024-11-10 10:26:34,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047043137] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:26:34,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:26:34,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 10:26:34,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983414239] [2024-11-10 10:26:34,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:26:34,791 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 10:26:34,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:26:34,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 10:26:34,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-10 10:26:34,792 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 68 [2024-11-10 10:26:34,792 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 82 transitions, 457 flow. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 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 10:26:34,792 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:26:34,792 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 68 [2024-11-10 10:26:34,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:26:35,310 INFO L124 PetriNetUnfolderBase]: 1444/2506 cut-off events. [2024-11-10 10:26:35,310 INFO L125 PetriNetUnfolderBase]: For 2626/2692 co-relation queries the response was YES. [2024-11-10 10:26:35,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7258 conditions, 2506 events. 1444/2506 cut-off events. For 2626/2692 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 13588 event pairs, 509 based on Foata normal form. 114/2612 useless extension candidates. Maximal degree in co-relation 7243. Up to 1376 conditions per place. [2024-11-10 10:26:35,319 INFO L140 encePairwiseOnDemand]: 58/68 looper letters, 0 selfloop transitions, 0 changer transitions 82/82 dead transitions. [2024-11-10 10:26:35,319 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 82 transitions, 553 flow [2024-11-10 10:26:35,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 10:26:35,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 10:26:35,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 132 transitions. [2024-11-10 10:26:35,320 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4852941176470588 [2024-11-10 10:26:35,320 INFO L175 Difference]: Start difference. First operand has 121 places, 82 transitions, 457 flow. Second operand 4 states and 132 transitions. [2024-11-10 10:26:35,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 82 transitions, 553 flow [2024-11-10 10:26:35,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 82 transitions, 476 flow, removed 2 selfloop flow, removed 19 redundant places. [2024-11-10 10:26:35,328 INFO L231 Difference]: Finished difference. Result has 76 places, 0 transitions, 0 flow [2024-11-10 10:26:35,328 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=76, PETRI_TRANSITIONS=0} [2024-11-10 10:26:35,329 INFO L277 CegarLoopForPetriNet]: 70 programPoint places, 6 predicate places. [2024-11-10 10:26:35,329 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 0 transitions, 0 flow [2024-11-10 10:26:35,329 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 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 10:26:35,331 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (8 of 9 remaining) [2024-11-10 10:26:35,332 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION (7 of 9 remaining) [2024-11-10 10:26:35,332 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (6 of 9 remaining) [2024-11-10 10:26:35,333 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (5 of 9 remaining) [2024-11-10 10:26:35,333 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 9 remaining) [2024-11-10 10:26:35,333 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 9 remaining) [2024-11-10 10:26:35,333 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 9 remaining) [2024-11-10 10:26:35,333 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 9 remaining) [2024-11-10 10:26:35,334 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 9 remaining) [2024-11-10 10:26:35,334 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-10 10:26:35,334 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:26:35,339 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-10 10:26:35,339 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-10 10:26:35,343 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.11 10:26:35 BasicIcfg [2024-11-10 10:26:35,343 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-10 10:26:35,344 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-10 10:26:35,344 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-10 10:26:35,344 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-10 10:26:35,344 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:25:41" (3/4) ... [2024-11-10 10:26:35,346 INFO L143 WitnessPrinter]: Generating witness for correct program [2024-11-10 10:26:35,348 INFO L393 IcfgBacktranslator]: Ignoring RootEdge to procedure t2_fun [2024-11-10 10:26:35,348 INFO L393 IcfgBacktranslator]: Ignoring RootEdge to procedure t3_fun [2024-11-10 10:26:35,349 INFO L393 IcfgBacktranslator]: Ignoring RootEdge to procedure t_fun [2024-11-10 10:26:35,352 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 35 nodes and edges [2024-11-10 10:26:35,352 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2024-11-10 10:26:35,352 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2024-11-10 10:26:35,353 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-10 10:26:35,438 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-10 10:26:35,438 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-10 10:26:35,438 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-10 10:26:35,439 INFO L158 Benchmark]: Toolchain (without parser) took 55226.68ms. Allocated memory was 157.3MB in the beginning and 15.1GB in the end (delta: 15.0GB). Free memory was 129.2MB in the beginning and 12.2GB in the end (delta: -12.0GB). Peak memory consumption was 2.9GB. Max. memory is 16.1GB. [2024-11-10 10:26:35,439 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 157.3MB. Free memory is still 126.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-10 10:26:35,439 INFO L158 Benchmark]: CACSL2BoogieTranslator took 405.26ms. Allocated memory is still 157.3MB. Free memory was 128.2MB in the beginning and 106.1MB in the end (delta: 22.1MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-11-10 10:26:35,439 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.19ms. Allocated memory is still 157.3MB. Free memory was 106.1MB in the beginning and 103.1MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-10 10:26:35,439 INFO L158 Benchmark]: Boogie Preprocessor took 31.57ms. Allocated memory is still 157.3MB. Free memory was 103.1MB in the beginning and 101.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-10 10:26:35,440 INFO L158 Benchmark]: IcfgBuilder took 633.33ms. Allocated memory is still 157.3MB. Free memory was 101.0MB in the beginning and 93.6MB in the end (delta: 7.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-11-10 10:26:35,440 INFO L158 Benchmark]: TraceAbstraction took 54022.02ms. Allocated memory was 157.3MB in the beginning and 15.1GB in the end (delta: 15.0GB). Free memory was 92.7MB in the beginning and 12.2GB in the end (delta: -12.1GB). Peak memory consumption was 3.5GB. Max. memory is 16.1GB. [2024-11-10 10:26:35,440 INFO L158 Benchmark]: Witness Printer took 94.39ms. Allocated memory is still 15.1GB. Free memory was 12.2GB in the beginning and 12.2GB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-10 10:26:35,441 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 157.3MB. Free memory is still 126.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 405.26ms. Allocated memory is still 157.3MB. Free memory was 128.2MB in the beginning and 106.1MB in the end (delta: 22.1MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.19ms. Allocated memory is still 157.3MB. Free memory was 106.1MB in the beginning and 103.1MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 31.57ms. Allocated memory is still 157.3MB. Free memory was 103.1MB in the beginning and 101.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * IcfgBuilder took 633.33ms. Allocated memory is still 157.3MB. Free memory was 101.0MB in the beginning and 93.6MB in the end (delta: 7.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 54022.02ms. Allocated memory was 157.3MB in the beginning and 15.1GB in the end (delta: 15.0GB). Free memory was 92.7MB in the beginning and 12.2GB in the end (delta: -12.1GB). Peak memory consumption was 3.5GB. Max. memory is 16.1GB. * Witness Printer took 94.39ms. Allocated memory is still 15.1GB. Free memory was 12.2GB in the beginning and 12.2GB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 107 locations, 9 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 53.9s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 52.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1089 SdHoareTripleChecker+Valid, 2.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1073 mSDsluCounter, 61 SdHoareTripleChecker+Invalid, 1.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 60 mSDsCounter, 52 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2886 IncrementalHoareTripleChecker+Invalid, 2938 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 52 mSolverCounterUnsat, 1 mSDtfsCounter, 2886 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 83 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=742occurred in iteration=7, InterpolantAutomatonStates: 66, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 192 NumberOfCodeBlocks, 192 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 183 ConstructedInterpolants, 0 QuantifiedInterpolants, 754 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-10 10:26:35,480 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE