./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/popl20-bad-ring-nondet.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/weaver/popl20-bad-ring-nondet.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --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 5fedede1a0cf545b0a275694256164e3eb4f49b22c80042adac647157728b27d --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 13:07:38,877 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 13:07:38,878 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 13:07:38,910 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 13:07:38,912 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 13:07:38,914 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 13:07:38,915 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 13:07:38,917 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 13:07:38,918 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 13:07:38,921 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 13:07:38,922 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 13:07:38,924 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 13:07:38,924 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 13:07:38,925 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 13:07:38,926 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 13:07:38,930 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 13:07:38,931 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 13:07:38,932 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 13:07:38,933 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 13:07:38,936 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 13:07:38,937 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 13:07:38,944 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 13:07:38,944 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 13:07:38,945 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 13:07:38,950 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 13:07:38,950 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 13:07:38,950 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 13:07:38,951 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 13:07:38,951 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 13:07:38,952 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 13:07:38,952 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 13:07:38,955 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 13:07:38,956 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 13:07:38,957 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 13:07:38,957 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 13:07:38,957 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 13:07:38,958 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 13:07:38,958 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 13:07:38,958 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 13:07:38,959 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 13:07:38,959 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 13:07:38,960 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-09-01 13:07:38,987 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 13:07:38,987 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 13:07:38,988 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 13:07:38,988 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 13:07:38,988 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 13:07:38,989 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 13:07:38,989 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 13:07:38,989 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 13:07:38,989 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 13:07:38,990 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 13:07:38,990 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 13:07:38,990 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 13:07:38,990 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 13:07:38,991 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 13:07:38,991 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 13:07:38,991 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 13:07:38,991 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 13:07:38,991 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 13:07:38,991 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 13:07:38,991 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 13:07:38,991 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 13:07:38,992 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 13:07:38,992 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 13:07:38,992 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 13:07:38,992 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 13:07:38,992 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 13:07:38,992 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 13:07:38,993 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 13:07:38,993 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 13:07:38,993 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 13:07:38,993 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 13:07:38,993 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 13:07:38,993 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 13:07:38,994 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 13:07:38,994 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 13:07:38,994 INFO L138 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5fedede1a0cf545b0a275694256164e3eb4f49b22c80042adac647157728b27d Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 13:07:39,241 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 13:07:39,261 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 13:07:39,263 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 13:07:39,264 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 13:07:39,264 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 13:07:39,265 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-bad-ring-nondet.wvr.c [2023-09-01 13:07:40,188 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 13:07:40,342 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 13:07:40,343 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-ring-nondet.wvr.c [2023-09-01 13:07:40,348 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/99cb50861/6cc8e607c055446598dff470485861fa/FLAG8a6690c48 [2023-09-01 13:07:40,356 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/99cb50861/6cc8e607c055446598dff470485861fa [2023-09-01 13:07:40,358 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 13:07:40,359 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 13:07:40,360 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 13:07:40,360 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 13:07:40,362 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 13:07:40,362 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 01:07:40" (1/1) ... [2023-09-01 13:07:40,362 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@205fd803 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:07:40, skipping insertion in model container [2023-09-01 13:07:40,363 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 01:07:40" (1/1) ... [2023-09-01 13:07:40,366 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 13:07:40,379 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 13:07:40,476 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-ring-nondet.wvr.c[4085,4098] [2023-09-01 13:07:40,481 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 13:07:40,487 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 13:07:40,504 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-ring-nondet.wvr.c[4085,4098] [2023-09-01 13:07:40,506 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 13:07:40,511 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 13:07:40,512 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 13:07:40,516 INFO L208 MainTranslator]: Completed translation [2023-09-01 13:07:40,516 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:07:40 WrapperNode [2023-09-01 13:07:40,516 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 13:07:40,517 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 13:07:40,517 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 13:07:40,517 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 13:07:40,522 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:07:40" (1/1) ... [2023-09-01 13:07:40,527 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:07:40" (1/1) ... [2023-09-01 13:07:40,556 INFO L138 Inliner]: procedures = 25, calls = 63, calls flagged for inlining = 16, calls inlined = 20, statements flattened = 327 [2023-09-01 13:07:40,557 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 13:07:40,558 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 13:07:40,558 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 13:07:40,559 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 13:07:40,564 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:07:40" (1/1) ... [2023-09-01 13:07:40,564 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:07:40" (1/1) ... [2023-09-01 13:07:40,577 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:07:40" (1/1) ... [2023-09-01 13:07:40,577 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:07:40" (1/1) ... [2023-09-01 13:07:40,585 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:07:40" (1/1) ... [2023-09-01 13:07:40,595 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:07:40" (1/1) ... [2023-09-01 13:07:40,597 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:07:40" (1/1) ... [2023-09-01 13:07:40,600 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:07:40" (1/1) ... [2023-09-01 13:07:40,603 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 13:07:40,605 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 13:07:40,605 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 13:07:40,606 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 13:07:40,606 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:07:40" (1/1) ... [2023-09-01 13:07:40,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 13:07:40,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 13:07:40,630 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-09-01 13:07:40,660 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-09-01 13:07:40,684 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 13:07:40,685 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 13:07:40,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 13:07:40,686 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 13:07:40,686 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-09-01 13:07:40,686 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-09-01 13:07:40,686 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-09-01 13:07:40,686 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-09-01 13:07:40,686 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-09-01 13:07:40,686 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-09-01 13:07:40,686 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 13:07:40,687 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-09-01 13:07:40,687 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-09-01 13:07:40,687 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-09-01 13:07:40,687 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 13:07:40,687 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 13:07:40,687 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 13:07:40,688 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 13:07:40,801 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 13:07:40,802 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 13:07:41,140 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 13:07:41,277 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 13:07:41,277 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-09-01 13:07:41,280 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 01:07:41 BoogieIcfgContainer [2023-09-01 13:07:41,280 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 13:07:41,282 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 13:07:41,282 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 13:07:41,284 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 13:07:41,284 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 01:07:40" (1/3) ... [2023-09-01 13:07:41,285 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61ba9e71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 01:07:41, skipping insertion in model container [2023-09-01 13:07:41,285 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:07:40" (2/3) ... [2023-09-01 13:07:41,285 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61ba9e71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 01:07:41, skipping insertion in model container [2023-09-01 13:07:41,285 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 01:07:41" (3/3) ... [2023-09-01 13:07:41,286 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-ring-nondet.wvr.c [2023-09-01 13:07:41,291 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 13:07:41,297 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 13:07:41,297 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-09-01 13:07:41,297 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 13:07:41,358 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-09-01 13:07:41,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 251 places, 266 transitions, 556 flow [2023-09-01 13:07:41,444 INFO L130 PetriNetUnfolder]: 25/263 cut-off events. [2023-09-01 13:07:41,444 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 13:07:41,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 276 conditions, 263 events. 25/263 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 200 event pairs, 0 based on Foata normal form. 0/237 useless extension candidates. Maximal degree in co-relation 225. Up to 4 conditions per place. [2023-09-01 13:07:41,450 INFO L82 GeneralOperation]: Start removeDead. Operand has 251 places, 266 transitions, 556 flow [2023-09-01 13:07:41,453 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 238 places, 253 transitions, 524 flow [2023-09-01 13:07:41,455 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 13:07:41,461 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 238 places, 253 transitions, 524 flow [2023-09-01 13:07:41,463 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 238 places, 253 transitions, 524 flow [2023-09-01 13:07:41,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 238 places, 253 transitions, 524 flow [2023-09-01 13:07:41,503 INFO L130 PetriNetUnfolder]: 25/253 cut-off events. [2023-09-01 13:07:41,503 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 13:07:41,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 266 conditions, 253 events. 25/253 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 201 event pairs, 0 based on Foata normal form. 0/228 useless extension candidates. Maximal degree in co-relation 225. Up to 4 conditions per place. [2023-09-01 13:07:41,506 INFO L119 LiptonReduction]: Number of co-enabled transitions 2820 [2023-09-01 13:07:47,995 INFO L134 LiptonReduction]: Checked pairs total: 5537 [2023-09-01 13:07:47,995 INFO L136 LiptonReduction]: Total number of compositions: 267 [2023-09-01 13:07:48,004 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 13:07:48,008 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@54c067ef, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 13:07:48,009 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-09-01 13:07:48,014 INFO L130 PetriNetUnfolder]: 10/36 cut-off events. [2023-09-01 13:07:48,014 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 13:07:48,014 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 13:07:48,014 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 13:07:48,015 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 13:07:48,018 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 13:07:48,018 INFO L85 PathProgramCache]: Analyzing trace with hash 203710906, now seen corresponding path program 1 times [2023-09-01 13:07:48,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 13:07:48,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925443627] [2023-09-01 13:07:48,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 13:07:48,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 13:07:48,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 13:07:48,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 13:07:48,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 13:07:48,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925443627] [2023-09-01 13:07:48,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925443627] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 13:07:48,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 13:07:48,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 13:07:48,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016166760] [2023-09-01 13:07:48,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 13:07:48,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-09-01 13:07:48,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 13:07:48,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-09-01 13:07:48,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-09-01 13:07:48,262 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 235 out of 533 [2023-09-01 13:07:48,265 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 37 transitions, 92 flow. Second operand has 2 states, 2 states have (on average 246.0) internal successors, (492), 2 states have internal predecessors, (492), 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) [2023-09-01 13:07:48,265 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 13:07:48,265 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 235 of 533 [2023-09-01 13:07:48,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 13:07:48,404 INFO L130 PetriNetUnfolder]: 748/1046 cut-off events. [2023-09-01 13:07:48,405 INFO L131 PetriNetUnfolder]: For 66/66 co-relation queries the response was YES. [2023-09-01 13:07:48,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2180 conditions, 1046 events. 748/1046 cut-off events. For 66/66 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 3214 event pairs, 493 based on Foata normal form. 0/791 useless extension candidates. Maximal degree in co-relation 1908. Up to 1047 conditions per place. [2023-09-01 13:07:48,412 INFO L137 encePairwiseOnDemand]: 531/533 looper letters, 35 selfloop transitions, 0 changer transitions 0/35 dead transitions. [2023-09-01 13:07:48,412 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 35 transitions, 158 flow [2023-09-01 13:07:48,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-09-01 13:07:48,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-09-01 13:07:48,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 507 transitions. [2023-09-01 13:07:48,427 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47560975609756095 [2023-09-01 13:07:48,427 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 507 transitions. [2023-09-01 13:07:48,428 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 507 transitions. [2023-09-01 13:07:48,430 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 13:07:48,432 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 507 transitions. [2023-09-01 13:07:48,436 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 253.5) internal successors, (507), 2 states have internal predecessors, (507), 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) [2023-09-01 13:07:48,441 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 533.0) internal successors, (1599), 3 states have internal predecessors, (1599), 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) [2023-09-01 13:07:48,442 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 533.0) internal successors, (1599), 3 states have internal predecessors, (1599), 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) [2023-09-01 13:07:48,443 INFO L175 Difference]: Start difference. First operand has 37 places, 37 transitions, 92 flow. Second operand 2 states and 507 transitions. [2023-09-01 13:07:48,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 35 transitions, 158 flow [2023-09-01 13:07:48,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 35 transitions, 146 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-09-01 13:07:48,449 INFO L231 Difference]: Finished difference. Result has 32 places, 35 transitions, 76 flow [2023-09-01 13:07:48,450 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=533, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=76, PETRI_PLACES=32, PETRI_TRANSITIONS=35} [2023-09-01 13:07:48,453 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, -5 predicate places. [2023-09-01 13:07:48,453 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 35 transitions, 76 flow [2023-09-01 13:07:48,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 246.0) internal successors, (492), 2 states have internal predecessors, (492), 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) [2023-09-01 13:07:48,456 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 13:07:48,456 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 13:07:48,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 13:07:48,457 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 13:07:48,458 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 13:07:48,458 INFO L85 PathProgramCache]: Analyzing trace with hash -875827311, now seen corresponding path program 1 times [2023-09-01 13:07:48,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 13:07:48,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043753859] [2023-09-01 13:07:48,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 13:07:48,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 13:07:48,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 13:07:48,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 13:07:48,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 13:07:48,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043753859] [2023-09-01 13:07:48,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043753859] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 13:07:48,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 13:07:48,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 13:07:48,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699370357] [2023-09-01 13:07:48,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 13:07:48,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 13:07:48,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 13:07:48,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 13:07:48,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 13:07:48,747 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 221 out of 533 [2023-09-01 13:07:48,748 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 35 transitions, 76 flow. Second operand has 4 states, 4 states have (on average 227.0) internal successors, (908), 4 states have internal predecessors, (908), 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) [2023-09-01 13:07:48,749 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 13:07:48,749 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 221 of 533 [2023-09-01 13:07:48,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 13:07:48,893 INFO L130 PetriNetUnfolder]: 869/1262 cut-off events. [2023-09-01 13:07:48,893 INFO L131 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2023-09-01 13:07:48,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2572 conditions, 1262 events. 869/1262 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 4221 event pairs, 595 based on Foata normal form. 84/1070 useless extension candidates. Maximal degree in co-relation 2569. Up to 1047 conditions per place. [2023-09-01 13:07:48,897 INFO L137 encePairwiseOnDemand]: 524/533 looper letters, 34 selfloop transitions, 2 changer transitions 33/69 dead transitions. [2023-09-01 13:07:48,897 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 69 transitions, 288 flow [2023-09-01 13:07:48,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 13:07:48,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 13:07:48,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1180 transitions. [2023-09-01 13:07:48,900 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4427767354596623 [2023-09-01 13:07:48,900 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1180 transitions. [2023-09-01 13:07:48,900 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1180 transitions. [2023-09-01 13:07:48,900 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 13:07:48,900 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1180 transitions. [2023-09-01 13:07:48,902 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 236.0) internal successors, (1180), 5 states have internal predecessors, (1180), 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) [2023-09-01 13:07:48,905 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 533.0) internal successors, (3198), 6 states have internal predecessors, (3198), 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) [2023-09-01 13:07:48,906 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 533.0) internal successors, (3198), 6 states have internal predecessors, (3198), 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) [2023-09-01 13:07:48,907 INFO L175 Difference]: Start difference. First operand has 32 places, 35 transitions, 76 flow. Second operand 5 states and 1180 transitions. [2023-09-01 13:07:48,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 69 transitions, 288 flow [2023-09-01 13:07:48,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 69 transitions, 288 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-09-01 13:07:48,909 INFO L231 Difference]: Finished difference. Result has 39 places, 36 transitions, 106 flow [2023-09-01 13:07:48,909 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=533, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=106, PETRI_PLACES=39, PETRI_TRANSITIONS=36} [2023-09-01 13:07:48,909 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 2 predicate places. [2023-09-01 13:07:48,910 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 36 transitions, 106 flow [2023-09-01 13:07:48,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 227.0) internal successors, (908), 4 states have internal predecessors, (908), 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) [2023-09-01 13:07:48,910 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 13:07:48,910 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 13:07:48,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 13:07:48,911 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 13:07:48,913 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 13:07:48,913 INFO L85 PathProgramCache]: Analyzing trace with hash -1983495064, now seen corresponding path program 1 times [2023-09-01 13:07:48,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 13:07:48,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056266851] [2023-09-01 13:07:48,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 13:07:48,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 13:07:48,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 13:07:49,062 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 13:07:49,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 13:07:49,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056266851] [2023-09-01 13:07:49,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056266851] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 13:07:49,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 13:07:49,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 13:07:49,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847711453] [2023-09-01 13:07:49,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 13:07:49,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 13:07:49,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 13:07:49,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 13:07:49,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 13:07:49,124 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 221 out of 533 [2023-09-01 13:07:49,125 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 36 transitions, 106 flow. Second operand has 4 states, 4 states have (on average 227.25) internal successors, (909), 4 states have internal predecessors, (909), 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) [2023-09-01 13:07:49,125 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 13:07:49,125 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 221 of 533 [2023-09-01 13:07:49,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 13:07:49,263 INFO L130 PetriNetUnfolder]: 996/1430 cut-off events. [2023-09-01 13:07:49,263 INFO L131 PetriNetUnfolder]: For 489/489 co-relation queries the response was YES. [2023-09-01 13:07:49,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3398 conditions, 1430 events. 996/1430 cut-off events. For 489/489 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 4889 event pairs, 680 based on Foata normal form. 82/1199 useless extension candidates. Maximal degree in co-relation 3391. Up to 1048 conditions per place. [2023-09-01 13:07:49,267 INFO L137 encePairwiseOnDemand]: 527/533 looper letters, 35 selfloop transitions, 2 changer transitions 22/59 dead transitions. [2023-09-01 13:07:49,267 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 59 transitions, 292 flow [2023-09-01 13:07:49,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 13:07:49,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 13:07:49,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 945 transitions. [2023-09-01 13:07:49,269 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4432457786116323 [2023-09-01 13:07:49,269 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 945 transitions. [2023-09-01 13:07:49,270 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 945 transitions. [2023-09-01 13:07:49,270 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 13:07:49,270 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 945 transitions. [2023-09-01 13:07:49,272 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 236.25) internal successors, (945), 4 states have internal predecessors, (945), 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) [2023-09-01 13:07:49,274 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 533.0) internal successors, (2665), 5 states have internal predecessors, (2665), 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) [2023-09-01 13:07:49,275 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 533.0) internal successors, (2665), 5 states have internal predecessors, (2665), 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) [2023-09-01 13:07:49,275 INFO L175 Difference]: Start difference. First operand has 39 places, 36 transitions, 106 flow. Second operand 4 states and 945 transitions. [2023-09-01 13:07:49,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 59 transitions, 292 flow [2023-09-01 13:07:49,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 59 transitions, 276 flow, removed 7 selfloop flow, removed 1 redundant places. [2023-09-01 13:07:49,277 INFO L231 Difference]: Finished difference. Result has 41 places, 37 transitions, 114 flow [2023-09-01 13:07:49,277 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=533, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=114, PETRI_PLACES=41, PETRI_TRANSITIONS=37} [2023-09-01 13:07:49,278 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 4 predicate places. [2023-09-01 13:07:49,280 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 37 transitions, 114 flow [2023-09-01 13:07:49,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 227.25) internal successors, (909), 4 states have internal predecessors, (909), 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) [2023-09-01 13:07:49,281 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 13:07:49,281 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 13:07:49,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 13:07:49,282 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 13:07:49,283 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 13:07:49,283 INFO L85 PathProgramCache]: Analyzing trace with hash -11726098, now seen corresponding path program 1 times [2023-09-01 13:07:49,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 13:07:49,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637856299] [2023-09-01 13:07:49,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 13:07:49,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 13:07:49,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 13:07:49,381 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-09-01 13:07:49,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 13:07:49,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637856299] [2023-09-01 13:07:49,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637856299] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 13:07:49,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 13:07:49,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 13:07:49,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217218742] [2023-09-01 13:07:49,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 13:07:49,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 13:07:49,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 13:07:49,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 13:07:49,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 13:07:49,435 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 221 out of 533 [2023-09-01 13:07:49,436 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 37 transitions, 114 flow. Second operand has 4 states, 4 states have (on average 227.5) internal successors, (910), 4 states have internal predecessors, (910), 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) [2023-09-01 13:07:49,436 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 13:07:49,436 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 221 of 533 [2023-09-01 13:07:49,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 13:07:49,599 INFO L130 PetriNetUnfolder]: 1247/1783 cut-off events. [2023-09-01 13:07:49,599 INFO L131 PetriNetUnfolder]: For 675/675 co-relation queries the response was YES. [2023-09-01 13:07:49,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4553 conditions, 1783 events. 1247/1783 cut-off events. For 675/675 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 6452 event pairs, 870 based on Foata normal form. 92/1464 useless extension candidates. Maximal degree in co-relation 4544. Up to 1049 conditions per place. [2023-09-01 13:07:49,604 INFO L137 encePairwiseOnDemand]: 527/533 looper letters, 36 selfloop transitions, 2 changer transitions 24/62 dead transitions. [2023-09-01 13:07:49,604 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 62 transitions, 311 flow [2023-09-01 13:07:49,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 13:07:49,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 13:07:49,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 947 transitions. [2023-09-01 13:07:49,608 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4441838649155722 [2023-09-01 13:07:49,608 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 947 transitions. [2023-09-01 13:07:49,608 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 947 transitions. [2023-09-01 13:07:49,609 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 13:07:49,609 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 947 transitions. [2023-09-01 13:07:49,610 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 236.75) internal successors, (947), 4 states have internal predecessors, (947), 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) [2023-09-01 13:07:49,612 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 533.0) internal successors, (2665), 5 states have internal predecessors, (2665), 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) [2023-09-01 13:07:49,613 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 533.0) internal successors, (2665), 5 states have internal predecessors, (2665), 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) [2023-09-01 13:07:49,613 INFO L175 Difference]: Start difference. First operand has 41 places, 37 transitions, 114 flow. Second operand 4 states and 947 transitions. [2023-09-01 13:07:49,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 62 transitions, 311 flow [2023-09-01 13:07:49,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 62 transitions, 295 flow, removed 7 selfloop flow, removed 2 redundant places. [2023-09-01 13:07:49,615 INFO L231 Difference]: Finished difference. Result has 43 places, 38 transitions, 122 flow [2023-09-01 13:07:49,616 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=533, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=122, PETRI_PLACES=43, PETRI_TRANSITIONS=38} [2023-09-01 13:07:49,616 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 6 predicate places. [2023-09-01 13:07:49,616 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 38 transitions, 122 flow [2023-09-01 13:07:49,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 227.5) internal successors, (910), 4 states have internal predecessors, (910), 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) [2023-09-01 13:07:49,617 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 13:07:49,617 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 13:07:49,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 13:07:49,617 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 13:07:49,618 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 13:07:49,618 INFO L85 PathProgramCache]: Analyzing trace with hash -451165947, now seen corresponding path program 1 times [2023-09-01 13:07:49,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 13:07:49,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794109236] [2023-09-01 13:07:49,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 13:07:49,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 13:07:49,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 13:07:49,724 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 13:07:49,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 13:07:49,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794109236] [2023-09-01 13:07:49,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794109236] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 13:07:49,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 13:07:49,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 13:07:49,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194192219] [2023-09-01 13:07:49,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 13:07:49,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 13:07:49,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 13:07:49,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 13:07:49,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 13:07:49,728 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 233 out of 533 [2023-09-01 13:07:49,729 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 38 transitions, 122 flow. Second operand has 3 states, 3 states have (on average 242.0) internal successors, (726), 3 states have internal predecessors, (726), 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) [2023-09-01 13:07:49,729 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 13:07:49,729 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 233 of 533 [2023-09-01 13:07:49,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 13:07:49,884 INFO L130 PetriNetUnfolder]: 1394/1946 cut-off events. [2023-09-01 13:07:49,884 INFO L131 PetriNetUnfolder]: For 398/398 co-relation queries the response was YES. [2023-09-01 13:07:49,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4923 conditions, 1946 events. 1394/1946 cut-off events. For 398/398 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 6914 event pairs, 493 based on Foata normal form. 1/1460 useless extension candidates. Maximal degree in co-relation 4913. Up to 1006 conditions per place. [2023-09-01 13:07:49,890 INFO L137 encePairwiseOnDemand]: 530/533 looper letters, 55 selfloop transitions, 2 changer transitions 6/63 dead transitions. [2023-09-01 13:07:49,891 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 63 transitions, 321 flow [2023-09-01 13:07:49,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 13:07:49,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 13:07:49,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 760 transitions. [2023-09-01 13:07:49,892 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47529706066291433 [2023-09-01 13:07:49,892 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 760 transitions. [2023-09-01 13:07:49,893 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 760 transitions. [2023-09-01 13:07:49,893 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 13:07:49,893 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 760 transitions. [2023-09-01 13:07:49,894 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 253.33333333333334) internal successors, (760), 3 states have internal predecessors, (760), 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) [2023-09-01 13:07:49,896 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 533.0) internal successors, (2132), 4 states have internal predecessors, (2132), 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) [2023-09-01 13:07:49,897 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 533.0) internal successors, (2132), 4 states have internal predecessors, (2132), 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) [2023-09-01 13:07:49,897 INFO L175 Difference]: Start difference. First operand has 43 places, 38 transitions, 122 flow. Second operand 3 states and 760 transitions. [2023-09-01 13:07:49,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 63 transitions, 321 flow [2023-09-01 13:07:49,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 63 transitions, 317 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-09-01 13:07:49,899 INFO L231 Difference]: Finished difference. Result has 44 places, 39 transitions, 132 flow [2023-09-01 13:07:49,899 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=533, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=132, PETRI_PLACES=44, PETRI_TRANSITIONS=39} [2023-09-01 13:07:49,900 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 7 predicate places. [2023-09-01 13:07:49,900 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 39 transitions, 132 flow [2023-09-01 13:07:49,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 242.0) internal successors, (726), 3 states have internal predecessors, (726), 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) [2023-09-01 13:07:49,900 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 13:07:49,900 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 13:07:49,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 13:07:49,901 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 13:07:49,901 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 13:07:49,901 INFO L85 PathProgramCache]: Analyzing trace with hash -4226639, now seen corresponding path program 1 times [2023-09-01 13:07:49,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 13:07:49,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611821637] [2023-09-01 13:07:49,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 13:07:49,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 13:07:49,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 13:07:49,943 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 13:07:49,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 13:07:49,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611821637] [2023-09-01 13:07:49,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611821637] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 13:07:49,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 13:07:49,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 13:07:49,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687503664] [2023-09-01 13:07:49,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 13:07:49,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 13:07:49,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 13:07:49,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 13:07:49,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 13:07:49,951 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 533 [2023-09-01 13:07:49,952 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 39 transitions, 132 flow. Second operand has 3 states, 3 states have (on average 240.0) internal successors, (720), 3 states have internal predecessors, (720), 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) [2023-09-01 13:07:49,952 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 13:07:49,952 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 533 [2023-09-01 13:07:49,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 13:07:50,142 INFO L130 PetriNetUnfolder]: 1590/2226 cut-off events. [2023-09-01 13:07:50,142 INFO L131 PetriNetUnfolder]: For 592/592 co-relation queries the response was YES. [2023-09-01 13:07:50,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5812 conditions, 2226 events. 1590/2226 cut-off events. For 592/592 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 8480 event pairs, 467 based on Foata normal form. 0/1703 useless extension candidates. Maximal degree in co-relation 5801. Up to 1288 conditions per place. [2023-09-01 13:07:50,149 INFO L137 encePairwiseOnDemand]: 530/533 looper letters, 51 selfloop transitions, 2 changer transitions 0/53 dead transitions. [2023-09-01 13:07:50,149 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 53 transitions, 282 flow [2023-09-01 13:07:50,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 13:07:50,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 13:07:50,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 740 transitions. [2023-09-01 13:07:50,151 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4627892432770482 [2023-09-01 13:07:50,151 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 740 transitions. [2023-09-01 13:07:50,151 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 740 transitions. [2023-09-01 13:07:50,152 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 13:07:50,152 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 740 transitions. [2023-09-01 13:07:50,153 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 246.66666666666666) internal successors, (740), 3 states have internal predecessors, (740), 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) [2023-09-01 13:07:50,154 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 533.0) internal successors, (2132), 4 states have internal predecessors, (2132), 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) [2023-09-01 13:07:50,155 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 533.0) internal successors, (2132), 4 states have internal predecessors, (2132), 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) [2023-09-01 13:07:50,155 INFO L175 Difference]: Start difference. First operand has 44 places, 39 transitions, 132 flow. Second operand 3 states and 740 transitions. [2023-09-01 13:07:50,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 53 transitions, 282 flow [2023-09-01 13:07:50,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 53 transitions, 280 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 13:07:50,157 INFO L231 Difference]: Finished difference. Result has 47 places, 40 transitions, 146 flow [2023-09-01 13:07:50,157 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=533, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=146, PETRI_PLACES=47, PETRI_TRANSITIONS=40} [2023-09-01 13:07:50,157 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 10 predicate places. [2023-09-01 13:07:50,158 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 40 transitions, 146 flow [2023-09-01 13:07:50,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 240.0) internal successors, (720), 3 states have internal predecessors, (720), 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) [2023-09-01 13:07:50,158 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 13:07:50,158 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 13:07:50,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 13:07:50,159 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 13:07:50,159 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 13:07:50,159 INFO L85 PathProgramCache]: Analyzing trace with hash 950240521, now seen corresponding path program 1 times [2023-09-01 13:07:50,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 13:07:50,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263747114] [2023-09-01 13:07:50,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 13:07:50,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 13:07:50,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 13:07:50,222 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 13:07:50,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 13:07:50,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263747114] [2023-09-01 13:07:50,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263747114] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 13:07:50,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 13:07:50,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 13:07:50,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741444608] [2023-09-01 13:07:50,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 13:07:50,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 13:07:50,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 13:07:50,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 13:07:50,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 13:07:50,242 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 225 out of 533 [2023-09-01 13:07:50,243 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 40 transitions, 146 flow. Second operand has 3 states, 3 states have (on average 236.0) internal successors, (708), 3 states have internal predecessors, (708), 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) [2023-09-01 13:07:50,243 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 13:07:50,243 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 225 of 533 [2023-09-01 13:07:50,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 13:07:50,487 INFO L130 PetriNetUnfolder]: 2252/3132 cut-off events. [2023-09-01 13:07:50,488 INFO L131 PetriNetUnfolder]: For 1970/1970 co-relation queries the response was YES. [2023-09-01 13:07:50,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8762 conditions, 3132 events. 2252/3132 cut-off events. For 1970/1970 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 12337 event pairs, 887 based on Foata normal form. 0/2503 useless extension candidates. Maximal degree in co-relation 8750. Up to 2073 conditions per place. [2023-09-01 13:07:50,496 INFO L137 encePairwiseOnDemand]: 528/533 looper letters, 48 selfloop transitions, 4 changer transitions 6/58 dead transitions. [2023-09-01 13:07:50,496 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 58 transitions, 324 flow [2023-09-01 13:07:50,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 13:07:50,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 13:07:50,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 728 transitions. [2023-09-01 13:07:50,498 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45528455284552843 [2023-09-01 13:07:50,498 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 728 transitions. [2023-09-01 13:07:50,498 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 728 transitions. [2023-09-01 13:07:50,499 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 13:07:50,499 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 728 transitions. [2023-09-01 13:07:50,500 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 242.66666666666666) internal successors, (728), 3 states have internal predecessors, (728), 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) [2023-09-01 13:07:50,501 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 533.0) internal successors, (2132), 4 states have internal predecessors, (2132), 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) [2023-09-01 13:07:50,502 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 533.0) internal successors, (2132), 4 states have internal predecessors, (2132), 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) [2023-09-01 13:07:50,502 INFO L175 Difference]: Start difference. First operand has 47 places, 40 transitions, 146 flow. Second operand 3 states and 728 transitions. [2023-09-01 13:07:50,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 58 transitions, 324 flow [2023-09-01 13:07:50,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 58 transitions, 320 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 13:07:50,505 INFO L231 Difference]: Finished difference. Result has 49 places, 44 transitions, 176 flow [2023-09-01 13:07:50,505 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=533, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=176, PETRI_PLACES=49, PETRI_TRANSITIONS=44} [2023-09-01 13:07:50,506 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 12 predicate places. [2023-09-01 13:07:50,506 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 44 transitions, 176 flow [2023-09-01 13:07:50,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 236.0) internal successors, (708), 3 states have internal predecessors, (708), 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) [2023-09-01 13:07:50,506 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 13:07:50,507 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 13:07:50,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-09-01 13:07:50,507 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 13:07:50,507 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 13:07:50,507 INFO L85 PathProgramCache]: Analyzing trace with hash 898013115, now seen corresponding path program 2 times [2023-09-01 13:07:50,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 13:07:50,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326730171] [2023-09-01 13:07:50,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 13:07:50,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 13:07:50,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 13:07:50,661 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 13:07:50,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 13:07:50,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326730171] [2023-09-01 13:07:50,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326730171] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 13:07:50,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 13:07:50,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 13:07:50,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837822358] [2023-09-01 13:07:50,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 13:07:50,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 13:07:50,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 13:07:50,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 13:07:50,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-09-01 13:07:50,708 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 533 [2023-09-01 13:07:50,709 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 44 transitions, 176 flow. Second operand has 5 states, 5 states have (on average 223.6) internal successors, (1118), 5 states have internal predecessors, (1118), 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) [2023-09-01 13:07:50,709 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 13:07:50,709 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 533 [2023-09-01 13:07:50,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 13:07:51,048 INFO L130 PetriNetUnfolder]: 2852/3948 cut-off events. [2023-09-01 13:07:51,049 INFO L131 PetriNetUnfolder]: For 2542/2542 co-relation queries the response was YES. [2023-09-01 13:07:51,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11835 conditions, 3948 events. 2852/3948 cut-off events. For 2542/2542 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 16060 event pairs, 1079 based on Foata normal form. 72/3217 useless extension candidates. Maximal degree in co-relation 11822. Up to 2045 conditions per place. [2023-09-01 13:07:51,059 INFO L137 encePairwiseOnDemand]: 527/533 looper letters, 40 selfloop transitions, 5 changer transitions 15/60 dead transitions. [2023-09-01 13:07:51,060 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 60 transitions, 362 flow [2023-09-01 13:07:51,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 13:07:51,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 13:07:51,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1138 transitions. [2023-09-01 13:07:51,062 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4270168855534709 [2023-09-01 13:07:51,062 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1138 transitions. [2023-09-01 13:07:51,062 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1138 transitions. [2023-09-01 13:07:51,063 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 13:07:51,063 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1138 transitions. [2023-09-01 13:07:51,064 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 227.6) internal successors, (1138), 5 states have internal predecessors, (1138), 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) [2023-09-01 13:07:51,067 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 533.0) internal successors, (3198), 6 states have internal predecessors, (3198), 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) [2023-09-01 13:07:51,067 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 533.0) internal successors, (3198), 6 states have internal predecessors, (3198), 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) [2023-09-01 13:07:51,067 INFO L175 Difference]: Start difference. First operand has 49 places, 44 transitions, 176 flow. Second operand 5 states and 1138 transitions. [2023-09-01 13:07:51,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 60 transitions, 362 flow [2023-09-01 13:07:51,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 60 transitions, 350 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 13:07:51,071 INFO L231 Difference]: Finished difference. Result has 52 places, 42 transitions, 175 flow [2023-09-01 13:07:51,071 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=533, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=175, PETRI_PLACES=52, PETRI_TRANSITIONS=42} [2023-09-01 13:07:51,072 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 15 predicate places. [2023-09-01 13:07:51,072 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 42 transitions, 175 flow [2023-09-01 13:07:51,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 223.6) internal successors, (1118), 5 states have internal predecessors, (1118), 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) [2023-09-01 13:07:51,074 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 13:07:51,074 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 13:07:51,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-09-01 13:07:51,074 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 13:07:51,075 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 13:07:51,075 INFO L85 PathProgramCache]: Analyzing trace with hash -1169813069, now seen corresponding path program 3 times [2023-09-01 13:07:51,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 13:07:51,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570060476] [2023-09-01 13:07:51,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 13:07:51,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 13:07:51,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 13:07:51,310 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 13:07:51,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 13:07:51,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570060476] [2023-09-01 13:07:51,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570060476] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 13:07:51,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [364499911] [2023-09-01 13:07:51,311 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-09-01 13:07:51,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 13:07:51,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 13:07:51,313 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 13:07:51,344 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-09-01 13:07:51,473 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-09-01 13:07:51,473 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 13:07:51,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 6 conjunts are in the unsatisfiable core [2023-09-01 13:07:51,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 13:07:51,502 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-09-01 13:07:51,504 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 13:07:51,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [364499911] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 13:07:51,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 13:07:51,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2023-09-01 13:07:51,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219334753] [2023-09-01 13:07:51,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 13:07:51,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 13:07:51,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 13:07:51,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 13:07:51,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-09-01 13:07:51,524 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 533 [2023-09-01 13:07:51,525 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 42 transitions, 175 flow. Second operand has 3 states, 3 states have (on average 241.66666666666666) internal successors, (725), 3 states have internal predecessors, (725), 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) [2023-09-01 13:07:51,525 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 13:07:51,525 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 533 [2023-09-01 13:07:51,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 13:07:51,859 INFO L130 PetriNetUnfolder]: 2797/3939 cut-off events. [2023-09-01 13:07:51,859 INFO L131 PetriNetUnfolder]: For 2929/2929 co-relation queries the response was YES. [2023-09-01 13:07:51,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11868 conditions, 3939 events. 2797/3939 cut-off events. For 2929/2929 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 16608 event pairs, 911 based on Foata normal form. 140/3324 useless extension candidates. Maximal degree in co-relation 11854. Up to 2998 conditions per place. [2023-09-01 13:07:51,870 INFO L137 encePairwiseOnDemand]: 529/533 looper letters, 60 selfloop transitions, 2 changer transitions 1/63 dead transitions. [2023-09-01 13:07:51,870 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 63 transitions, 398 flow [2023-09-01 13:07:51,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 13:07:51,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 13:07:51,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 746 transitions. [2023-09-01 13:07:51,872 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.466541588492808 [2023-09-01 13:07:51,872 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 746 transitions. [2023-09-01 13:07:51,872 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 746 transitions. [2023-09-01 13:07:51,873 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 13:07:51,873 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 746 transitions. [2023-09-01 13:07:51,874 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 248.66666666666666) internal successors, (746), 3 states have internal predecessors, (746), 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) [2023-09-01 13:07:51,876 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 533.0) internal successors, (2132), 4 states have internal predecessors, (2132), 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) [2023-09-01 13:07:51,876 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 533.0) internal successors, (2132), 4 states have internal predecessors, (2132), 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) [2023-09-01 13:07:51,876 INFO L175 Difference]: Start difference. First operand has 52 places, 42 transitions, 175 flow. Second operand 3 states and 746 transitions. [2023-09-01 13:07:51,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 63 transitions, 398 flow [2023-09-01 13:07:51,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 63 transitions, 379 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-09-01 13:07:51,880 INFO L231 Difference]: Finished difference. Result has 51 places, 43 transitions, 180 flow [2023-09-01 13:07:51,880 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=533, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=180, PETRI_PLACES=51, PETRI_TRANSITIONS=43} [2023-09-01 13:07:51,881 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 14 predicate places. [2023-09-01 13:07:51,881 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 43 transitions, 180 flow [2023-09-01 13:07:51,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 241.66666666666666) internal successors, (725), 3 states have internal predecessors, (725), 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) [2023-09-01 13:07:51,881 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 13:07:51,881 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 13:07:51,889 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-09-01 13:07:52,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 13:07:52,087 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 13:07:52,088 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 13:07:52,088 INFO L85 PathProgramCache]: Analyzing trace with hash 279207723, now seen corresponding path program 4 times [2023-09-01 13:07:52,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 13:07:52,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766745356] [2023-09-01 13:07:52,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 13:07:52,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 13:07:52,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 13:07:52,228 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 13:07:52,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 13:07:52,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766745356] [2023-09-01 13:07:52,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766745356] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 13:07:52,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2020511304] [2023-09-01 13:07:52,229 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-09-01 13:07:52,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 13:07:52,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 13:07:52,230 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 13:07:52,232 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-09-01 13:07:52,351 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-09-01 13:07:52,352 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 13:07:52,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 6 conjunts are in the unsatisfiable core [2023-09-01 13:07:52,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 13:07:52,386 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-09-01 13:07:52,386 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 13:07:52,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2020511304] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 13:07:52,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 13:07:52,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2023-09-01 13:07:52,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733501938] [2023-09-01 13:07:52,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 13:07:52,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 13:07:52,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 13:07:52,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 13:07:52,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-09-01 13:07:52,397 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 533 [2023-09-01 13:07:52,398 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 43 transitions, 180 flow. Second operand has 3 states, 3 states have (on average 241.66666666666666) internal successors, (725), 3 states have internal predecessors, (725), 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) [2023-09-01 13:07:52,398 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 13:07:52,399 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 533 [2023-09-01 13:07:52,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 13:07:52,727 INFO L130 PetriNetUnfolder]: 2840/4022 cut-off events. [2023-09-01 13:07:52,727 INFO L131 PetriNetUnfolder]: For 3815/3815 co-relation queries the response was YES. [2023-09-01 13:07:52,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12390 conditions, 4022 events. 2840/4022 cut-off events. For 3815/3815 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 16641 event pairs, 884 based on Foata normal form. 176/3507 useless extension candidates. Maximal degree in co-relation 12376. Up to 2410 conditions per place. [2023-09-01 13:07:52,741 INFO L137 encePairwiseOnDemand]: 529/533 looper letters, 56 selfloop transitions, 3 changer transitions 4/63 dead transitions. [2023-09-01 13:07:52,741 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 63 transitions, 396 flow [2023-09-01 13:07:52,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 13:07:52,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 13:07:52,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 745 transitions. [2023-09-01 13:07:52,743 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4659161976235147 [2023-09-01 13:07:52,743 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 745 transitions. [2023-09-01 13:07:52,744 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 745 transitions. [2023-09-01 13:07:52,744 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 13:07:52,744 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 745 transitions. [2023-09-01 13:07:52,745 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 248.33333333333334) internal successors, (745), 3 states have internal predecessors, (745), 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) [2023-09-01 13:07:52,747 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 533.0) internal successors, (2132), 4 states have internal predecessors, (2132), 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) [2023-09-01 13:07:52,748 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 533.0) internal successors, (2132), 4 states have internal predecessors, (2132), 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) [2023-09-01 13:07:52,748 INFO L175 Difference]: Start difference. First operand has 51 places, 43 transitions, 180 flow. Second operand 3 states and 745 transitions. [2023-09-01 13:07:52,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 63 transitions, 396 flow [2023-09-01 13:07:52,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 63 transitions, 394 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 13:07:52,751 INFO L231 Difference]: Finished difference. Result has 53 places, 45 transitions, 201 flow [2023-09-01 13:07:52,752 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=533, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=201, PETRI_PLACES=53, PETRI_TRANSITIONS=45} [2023-09-01 13:07:52,753 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 16 predicate places. [2023-09-01 13:07:52,753 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 45 transitions, 201 flow [2023-09-01 13:07:52,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 241.66666666666666) internal successors, (725), 3 states have internal predecessors, (725), 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) [2023-09-01 13:07:52,754 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 13:07:52,754 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 13:07:52,763 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-09-01 13:07:52,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-09-01 13:07:52,960 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 13:07:52,960 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 13:07:52,960 INFO L85 PathProgramCache]: Analyzing trace with hash -1250184703, now seen corresponding path program 5 times [2023-09-01 13:07:52,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 13:07:52,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454499678] [2023-09-01 13:07:52,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 13:07:52,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 13:07:52,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 13:07:53,106 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 13:07:53,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 13:07:53,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454499678] [2023-09-01 13:07:53,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454499678] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 13:07:53,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 13:07:53,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 13:07:53,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801519669] [2023-09-01 13:07:53,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 13:07:53,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 13:07:53,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 13:07:53,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 13:07:53,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-09-01 13:07:53,150 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 533 [2023-09-01 13:07:53,151 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 45 transitions, 201 flow. Second operand has 5 states, 5 states have (on average 223.6) internal successors, (1118), 5 states have internal predecessors, (1118), 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) [2023-09-01 13:07:53,151 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 13:07:53,152 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 533 [2023-09-01 13:07:53,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 13:07:53,422 INFO L130 PetriNetUnfolder]: 2728/3862 cut-off events. [2023-09-01 13:07:53,423 INFO L131 PetriNetUnfolder]: For 3991/3991 co-relation queries the response was YES. [2023-09-01 13:07:53,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12763 conditions, 3862 events. 2728/3862 cut-off events. For 3991/3991 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 16677 event pairs, 878 based on Foata normal form. 20/3203 useless extension candidates. Maximal degree in co-relation 12748. Up to 2227 conditions per place. [2023-09-01 13:07:53,435 INFO L137 encePairwiseOnDemand]: 527/533 looper letters, 49 selfloop transitions, 5 changer transitions 8/62 dead transitions. [2023-09-01 13:07:53,435 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 62 transitions, 408 flow [2023-09-01 13:07:53,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 13:07:53,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 13:07:53,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1135 transitions. [2023-09-01 13:07:53,438 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425891181988743 [2023-09-01 13:07:53,438 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1135 transitions. [2023-09-01 13:07:53,438 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1135 transitions. [2023-09-01 13:07:53,439 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 13:07:53,439 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1135 transitions. [2023-09-01 13:07:53,441 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 227.0) internal successors, (1135), 5 states have internal predecessors, (1135), 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) [2023-09-01 13:07:53,443 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 533.0) internal successors, (3198), 6 states have internal predecessors, (3198), 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) [2023-09-01 13:07:53,444 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 533.0) internal successors, (3198), 6 states have internal predecessors, (3198), 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) [2023-09-01 13:07:53,444 INFO L175 Difference]: Start difference. First operand has 53 places, 45 transitions, 201 flow. Second operand 5 states and 1135 transitions. [2023-09-01 13:07:53,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 62 transitions, 408 flow [2023-09-01 13:07:53,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 62 transitions, 383 flow, removed 10 selfloop flow, removed 2 redundant places. [2023-09-01 13:07:53,448 INFO L231 Difference]: Finished difference. Result has 56 places, 45 transitions, 203 flow [2023-09-01 13:07:53,448 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=533, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=203, PETRI_PLACES=56, PETRI_TRANSITIONS=45} [2023-09-01 13:07:53,448 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 19 predicate places. [2023-09-01 13:07:53,448 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 45 transitions, 203 flow [2023-09-01 13:07:53,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 223.6) internal successors, (1118), 5 states have internal predecessors, (1118), 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) [2023-09-01 13:07:53,449 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 13:07:53,449 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 13:07:53,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-09-01 13:07:53,449 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 13:07:53,450 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 13:07:53,450 INFO L85 PathProgramCache]: Analyzing trace with hash 928404999, now seen corresponding path program 6 times [2023-09-01 13:07:53,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 13:07:53,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544048063] [2023-09-01 13:07:53,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 13:07:53,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 13:07:53,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 13:07:53,634 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 13:07:53,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 13:07:53,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544048063] [2023-09-01 13:07:53,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544048063] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 13:07:53,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1066624229] [2023-09-01 13:07:53,635 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-09-01 13:07:53,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 13:07:53,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 13:07:53,637 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 13:07:53,639 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-09-01 13:07:53,827 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-09-01 13:07:53,828 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 13:07:53,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 6 conjunts are in the unsatisfiable core [2023-09-01 13:07:53,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 13:07:53,890 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2023-09-01 13:07:53,897 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-09-01 13:07:53,897 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 13:07:53,925 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-09-01 13:07:53,926 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2023-09-01 13:07:53,938 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-09-01 13:07:53,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1066624229] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 13:07:53,939 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 13:07:53,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-09-01 13:07:53,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383566487] [2023-09-01 13:07:53,939 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 13:07:53,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-09-01 13:07:53,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 13:07:53,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-09-01 13:07:53,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-09-01 13:07:54,160 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 533 [2023-09-01 13:07:54,161 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 45 transitions, 203 flow. Second operand has 11 states, 11 states have (on average 214.9090909090909) internal successors, (2364), 11 states have internal predecessors, (2364), 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) [2023-09-01 13:07:54,161 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 13:07:54,161 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 533 [2023-09-01 13:07:54,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 13:07:54,502 INFO L130 PetriNetUnfolder]: 1956/2781 cut-off events. [2023-09-01 13:07:54,502 INFO L131 PetriNetUnfolder]: For 3631/3631 co-relation queries the response was YES. [2023-09-01 13:07:54,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8912 conditions, 2781 events. 1956/2781 cut-off events. For 3631/3631 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 11034 event pairs, 342 based on Foata normal form. 122/2442 useless extension candidates. Maximal degree in co-relation 8897. Up to 962 conditions per place. [2023-09-01 13:07:54,509 INFO L137 encePairwiseOnDemand]: 524/533 looper letters, 0 selfloop transitions, 0 changer transitions 99/99 dead transitions. [2023-09-01 13:07:54,509 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 99 transitions, 694 flow [2023-09-01 13:07:54,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-09-01 13:07:54,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-09-01 13:07:54,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2386 transitions. [2023-09-01 13:07:54,513 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40695889476377284 [2023-09-01 13:07:54,514 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2386 transitions. [2023-09-01 13:07:54,514 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2386 transitions. [2023-09-01 13:07:54,515 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 13:07:54,515 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2386 transitions. [2023-09-01 13:07:54,527 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 216.9090909090909) internal successors, (2386), 11 states have internal predecessors, (2386), 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) [2023-09-01 13:07:54,533 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 533.0) internal successors, (6396), 12 states have internal predecessors, (6396), 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) [2023-09-01 13:07:54,533 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 533.0) internal successors, (6396), 12 states have internal predecessors, (6396), 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) [2023-09-01 13:07:54,533 INFO L175 Difference]: Start difference. First operand has 56 places, 45 transitions, 203 flow. Second operand 11 states and 2386 transitions. [2023-09-01 13:07:54,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 99 transitions, 694 flow [2023-09-01 13:07:54,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 99 transitions, 619 flow, removed 10 selfloop flow, removed 5 redundant places. [2023-09-01 13:07:54,537 INFO L231 Difference]: Finished difference. Result has 55 places, 0 transitions, 0 flow [2023-09-01 13:07:54,537 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=533, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=0, PETRI_PLACES=55, PETRI_TRANSITIONS=0} [2023-09-01 13:07:54,539 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 18 predicate places. [2023-09-01 13:07:54,539 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 0 transitions, 0 flow [2023-09-01 13:07:54,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 214.9090909090909) internal successors, (2364), 11 states have internal predecessors, (2364), 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) [2023-09-01 13:07:54,542 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-09-01 13:07:54,542 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-09-01 13:07:54,542 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-09-01 13:07:54,542 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-09-01 13:07:54,551 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-09-01 13:07:54,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 13:07:54,748 INFO L445 BasicCegarLoop]: Path program histogram: [6, 1, 1, 1, 1, 1, 1] [2023-09-01 13:07:54,750 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-09-01 13:07:54,750 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-09-01 13:07:54,751 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.09 01:07:54 BasicIcfg [2023-09-01 13:07:54,752 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-09-01 13:07:54,752 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-09-01 13:07:54,752 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-09-01 13:07:54,752 INFO L275 PluginConnector]: Witness Printer initialized [2023-09-01 13:07:54,752 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 01:07:41" (3/4) ... [2023-09-01 13:07:54,754 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-09-01 13:07:54,757 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-09-01 13:07:54,757 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-09-01 13:07:54,757 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2023-09-01 13:07:54,761 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 32 nodes and edges [2023-09-01 13:07:54,761 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-09-01 13:07:54,761 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-09-01 13:07:54,761 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-09-01 13:07:54,801 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-09-01 13:07:54,801 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-09-01 13:07:54,803 INFO L158 Benchmark]: Toolchain (without parser) took 14442.55ms. Allocated memory was 81.8MB in the beginning and 606.1MB in the end (delta: 524.3MB). Free memory was 60.0MB in the beginning and 362.1MB in the end (delta: -302.1MB). Peak memory consumption was 224.0MB. Max. memory is 16.1GB. [2023-09-01 13:07:54,803 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 62.9MB. Free memory was 40.8MB in the beginning and 40.7MB in the end (delta: 98.0kB). There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 13:07:54,803 INFO L158 Benchmark]: CACSL2BoogieTranslator took 157.03ms. Allocated memory is still 81.8MB. Free memory was 59.8MB in the beginning and 47.3MB in the end (delta: 12.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-09-01 13:07:54,803 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.03ms. Allocated memory is still 81.8MB. Free memory was 47.3MB in the beginning and 44.6MB in the end (delta: 2.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-09-01 13:07:54,803 INFO L158 Benchmark]: Boogie Preprocessor took 46.51ms. Allocated memory is still 81.8MB. Free memory was 44.6MB in the beginning and 42.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 13:07:54,804 INFO L158 Benchmark]: RCFGBuilder took 675.20ms. Allocated memory is still 81.8MB. Free memory was 42.2MB in the beginning and 46.9MB in the end (delta: -4.6MB). Peak memory consumption was 12.4MB. Max. memory is 16.1GB. [2023-09-01 13:07:54,804 INFO L158 Benchmark]: TraceAbstraction took 13470.11ms. Allocated memory was 81.8MB in the beginning and 606.1MB in the end (delta: 524.3MB). Free memory was 46.4MB in the beginning and 367.3MB in the end (delta: -320.8MB). Peak memory consumption was 203.2MB. Max. memory is 16.1GB. [2023-09-01 13:07:54,804 INFO L158 Benchmark]: Witness Printer took 49.18ms. Allocated memory is still 606.1MB. Free memory was 367.3MB in the beginning and 362.1MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-09-01 13:07:54,806 INFO L339 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 62.9MB. Free memory was 40.8MB in the beginning and 40.7MB in the end (delta: 98.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 157.03ms. Allocated memory is still 81.8MB. Free memory was 59.8MB in the beginning and 47.3MB in the end (delta: 12.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 40.03ms. Allocated memory is still 81.8MB. Free memory was 47.3MB in the beginning and 44.6MB in the end (delta: 2.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 46.51ms. Allocated memory is still 81.8MB. Free memory was 44.6MB in the beginning and 42.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 675.20ms. Allocated memory is still 81.8MB. Free memory was 42.2MB in the beginning and 46.9MB in the end (delta: -4.6MB). Peak memory consumption was 12.4MB. Max. memory is 16.1GB. * TraceAbstraction took 13470.11ms. Allocated memory was 81.8MB in the beginning and 606.1MB in the end (delta: 524.3MB). Free memory was 46.4MB in the beginning and 367.3MB in the end (delta: -320.8MB). Peak memory consumption was 203.2MB. Max. memory is 16.1GB. * Witness Printer took 49.18ms. Allocated memory is still 606.1MB. Free memory was 367.3MB in the beginning and 362.1MB 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: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 6.5s, 238 PlacesBefore, 37 PlacesAfterwards, 253 TransitionsBefore, 37 TransitionsAfterwards, 2820 CoEnabledTransitionPairs, 8 FixpointIterations, 159 TrivialSequentialCompositions, 44 ConcurrentSequentialCompositions, 35 TrivialYvCompositions, 14 ConcurrentYvCompositions, 15 ChoiceCompositions, 267 TotalNumberOfCompositions, 5537 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4134, independent: 3984, independent conditional: 0, independent unconditional: 3984, dependent: 150, dependent conditional: 0, dependent unconditional: 150, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1717, independent: 1685, independent conditional: 0, independent unconditional: 1685, dependent: 32, dependent conditional: 0, dependent unconditional: 32, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 4134, independent: 2299, independent conditional: 0, independent unconditional: 2299, dependent: 118, dependent conditional: 0, dependent unconditional: 118, unknown: 1717, unknown conditional: 0, unknown unconditional: 1717] , Statistics on independence cache: Total cache size (in pairs): 157, Positive cache size: 146, Positive conditional cache size: 0, Positive unconditional cache size: 146, Negative cache size: 11, Negative conditional cache size: 0, Negative unconditional cache size: 11, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 156]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 287 locations, 4 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: 13.4s, OverallIterations: 12, TraceHistogramMax: 2, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 3.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 6.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1090 SdHoareTripleChecker+Valid, 1.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 739 mSDsluCounter, 591 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 519 mSDsCounter, 70 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2161 IncrementalHoareTripleChecker+Invalid, 2231 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 70 mSolverCounterUnsat, 72 mSDtfsCounter, 2161 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 189 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=203occurred in iteration=11, InterpolantAutomatonStates: 51, 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: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 451 NumberOfCodeBlocks, 444 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 468 ConstructedInterpolants, 0 QuantifiedInterpolants, 1566 SizeOfPredicates, 8 NumberOfNonLiveVariables, 1210 ConjunctsInSsa, 18 ConjunctsInUnsatCore, 16 InterpolantComputations, 11 PerfectInterpolantSequences, 72/80 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 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-09-01 13:07:54,831 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE