./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread/triangular-longest-2.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --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/pthread/triangular-longest-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.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 874fb84f685baf0441a9bf8db1864605baa10908128545fe3028b9b499246108 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 22:51:13,152 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 22:51:13,154 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 22:51:13,197 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 22:51:13,199 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 22:51:13,202 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 22:51:13,204 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 22:51:13,207 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 22:51:13,209 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 22:51:13,214 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 22:51:13,215 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 22:51:13,217 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 22:51:13,218 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 22:51:13,220 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 22:51:13,221 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 22:51:13,226 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 22:51:13,227 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 22:51:13,229 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 22:51:13,230 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 22:51:13,235 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 22:51:13,237 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 22:51:13,238 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 22:51:13,239 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 22:51:13,239 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 22:51:13,246 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 22:51:13,247 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 22:51:13,247 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 22:51:13,249 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 22:51:13,251 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 22:51:13,252 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 22:51:13,252 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 22:51:13,260 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 22:51:13,262 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 22:51:13,263 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 22:51:13,264 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 22:51:13,264 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 22:51:13,265 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 22:51:13,265 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 22:51:13,265 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 22:51:13,266 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 22:51:13,267 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 22:51:13,268 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-30 22:51:13,300 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 22:51:13,300 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 22:51:13,302 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 22:51:13,302 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 22:51:13,303 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 22:51:13,303 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 22:51:13,304 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 22:51:13,304 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 22:51:13,304 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 22:51:13,304 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 22:51:13,305 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 22:51:13,305 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 22:51:13,306 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 22:51:13,306 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 22:51:13,306 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 22:51:13,306 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 22:51:13,307 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 22:51:13,307 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 22:51:13,307 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 22:51:13,307 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 22:51:13,307 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 22:51:13,308 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 22:51:13,308 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 22:51:13,308 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 22:51:13,308 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 22:51:13,309 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 22:51:13,309 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 22:51:13,309 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 22:51:13,309 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 22:51:13,310 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 22:51:13,310 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 22:51:13,310 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 22:51:13,310 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 22:51:13,311 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 22:51:13,311 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 22:51:13,311 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 874fb84f685baf0441a9bf8db1864605baa10908128545fe3028b9b499246108 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 22:51:13,658 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 22:51:13,681 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 22:51:13,683 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 22:51:13,684 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 22:51:13,685 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 22:51:13,686 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/triangular-longest-2.i [2023-08-30 22:51:14,990 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 22:51:15,231 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 22:51:15,231 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-longest-2.i [2023-08-30 22:51:15,252 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a22abfe06/e25e251bf8f34f35bdd8b1b4b350bd47/FLAGa5ae51257 [2023-08-30 22:51:15,267 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a22abfe06/e25e251bf8f34f35bdd8b1b4b350bd47 [2023-08-30 22:51:15,270 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 22:51:15,271 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 22:51:15,272 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 22:51:15,272 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 22:51:15,275 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 22:51:15,276 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 10:51:15" (1/1) ... [2023-08-30 22:51:15,277 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fcd08f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:51:15, skipping insertion in model container [2023-08-30 22:51:15,277 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 10:51:15" (1/1) ... [2023-08-30 22:51:15,282 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 22:51:15,334 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 22:51:15,603 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-longest-2.i[30964,30977] [2023-08-30 22:51:15,607 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 22:51:15,620 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 22:51:15,679 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-longest-2.i[30964,30977] [2023-08-30 22:51:15,684 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 22:51:15,720 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 22:51:15,720 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 22:51:15,726 INFO L208 MainTranslator]: Completed translation [2023-08-30 22:51:15,726 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:51:15 WrapperNode [2023-08-30 22:51:15,726 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 22:51:15,728 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 22:51:15,728 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 22:51:15,728 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 22:51:15,734 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:51:15" (1/1) ... [2023-08-30 22:51:15,764 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:51:15" (1/1) ... [2023-08-30 22:51:15,786 INFO L138 Inliner]: procedures = 169, calls = 24, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 47 [2023-08-30 22:51:15,787 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 22:51:15,787 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 22:51:15,788 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 22:51:15,789 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 22:51:15,797 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:51:15" (1/1) ... [2023-08-30 22:51:15,797 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:51:15" (1/1) ... [2023-08-30 22:51:15,802 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:51:15" (1/1) ... [2023-08-30 22:51:15,803 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:51:15" (1/1) ... [2023-08-30 22:51:15,819 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:51:15" (1/1) ... [2023-08-30 22:51:15,824 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:51:15" (1/1) ... [2023-08-30 22:51:15,826 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:51:15" (1/1) ... [2023-08-30 22:51:15,830 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:51:15" (1/1) ... [2023-08-30 22:51:15,832 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 22:51:15,836 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 22:51:15,836 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 22:51:15,837 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 22:51:15,837 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:51:15" (1/1) ... [2023-08-30 22:51:15,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 22:51:15,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 22:51:15,870 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) [2023-08-30 22:51:15,897 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 [2023-08-30 22:51:15,908 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-08-30 22:51:15,909 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-08-30 22:51:15,909 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-08-30 22:51:15,909 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-08-30 22:51:15,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 22:51:15,910 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 22:51:15,910 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 22:51:15,910 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 22:51:15,910 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 22:51:15,910 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 22:51:15,910 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 22:51:15,910 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 22:51:15,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 22:51:15,912 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 22:51:16,087 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 22:51:16,088 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 22:51:16,224 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 22:51:16,229 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 22:51:16,230 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-30 22:51:16,232 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 10:51:16 BoogieIcfgContainer [2023-08-30 22:51:16,232 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 22:51:16,234 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 22:51:16,234 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 22:51:16,237 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 22:51:16,237 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 10:51:15" (1/3) ... [2023-08-30 22:51:16,238 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5974597a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 10:51:16, skipping insertion in model container [2023-08-30 22:51:16,238 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:51:15" (2/3) ... [2023-08-30 22:51:16,238 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5974597a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 10:51:16, skipping insertion in model container [2023-08-30 22:51:16,238 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 10:51:16" (3/3) ... [2023-08-30 22:51:16,240 INFO L112 eAbstractionObserver]: Analyzing ICFG triangular-longest-2.i [2023-08-30 22:51:16,247 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 22:51:16,255 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 22:51:16,256 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-30 22:51:16,256 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 22:51:16,303 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-30 22:51:16,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 68 places, 66 transitions, 142 flow [2023-08-30 22:51:16,371 INFO L130 PetriNetUnfolder]: 5/64 cut-off events. [2023-08-30 22:51:16,380 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 22:51:16,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71 conditions, 64 events. 5/64 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 63 event pairs, 0 based on Foata normal form. 0/58 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2023-08-30 22:51:16,387 INFO L82 GeneralOperation]: Start removeDead. Operand has 68 places, 66 transitions, 142 flow [2023-08-30 22:51:16,392 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 66 places, 64 transitions, 134 flow [2023-08-30 22:51:16,396 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 22:51:16,411 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 66 places, 64 transitions, 134 flow [2023-08-30 22:51:16,419 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 66 places, 64 transitions, 134 flow [2023-08-30 22:51:16,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 66 places, 64 transitions, 134 flow [2023-08-30 22:51:16,452 INFO L130 PetriNetUnfolder]: 5/64 cut-off events. [2023-08-30 22:51:16,452 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 22:51:16,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71 conditions, 64 events. 5/64 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 63 event pairs, 0 based on Foata normal form. 0/58 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2023-08-30 22:51:16,455 INFO L119 LiptonReduction]: Number of co-enabled transitions 1078 [2023-08-30 22:51:18,271 INFO L134 LiptonReduction]: Checked pairs total: 999 [2023-08-30 22:51:18,272 INFO L136 LiptonReduction]: Total number of compositions: 58 [2023-08-30 22:51:18,290 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 22:51:18,297 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;@3b45688f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 22:51:18,297 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-30 22:51:18,303 INFO L130 PetriNetUnfolder]: 3/13 cut-off events. [2023-08-30 22:51:18,303 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 22:51:18,304 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 22:51:18,305 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 22:51:18,305 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 22:51:18,310 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 22:51:18,310 INFO L85 PathProgramCache]: Analyzing trace with hash -776471266, now seen corresponding path program 1 times [2023-08-30 22:51:18,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 22:51:18,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839205756] [2023-08-30 22:51:18,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 22:51:18,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 22:51:18,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 22:51:18,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 22:51:18,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 22:51:18,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839205756] [2023-08-30 22:51:18,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839205756] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 22:51:18,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 22:51:18,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 22:51:18,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171942209] [2023-08-30 22:51:18,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 22:51:18,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 22:51:18,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 22:51:18,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 22:51:18,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 22:51:18,805 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 124 [2023-08-30 22:51:18,808 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 14 transitions, 34 flow. Second operand has 4 states, 4 states have (on average 55.5) internal successors, (222), 4 states have internal predecessors, (222), 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) [2023-08-30 22:51:18,808 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 22:51:18,808 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 124 [2023-08-30 22:51:18,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 22:51:18,889 INFO L130 PetriNetUnfolder]: 94/152 cut-off events. [2023-08-30 22:51:18,890 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 22:51:18,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 316 conditions, 152 events. 94/152 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 393 event pairs, 11 based on Foata normal form. 0/106 useless extension candidates. Maximal degree in co-relation 306. Up to 76 conditions per place. [2023-08-30 22:51:18,894 INFO L137 encePairwiseOnDemand]: 119/124 looper letters, 18 selfloop transitions, 4 changer transitions 4/26 dead transitions. [2023-08-30 22:51:18,894 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 26 transitions, 110 flow [2023-08-30 22:51:18,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 22:51:18,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 22:51:18,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 245 transitions. [2023-08-30 22:51:18,912 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4939516129032258 [2023-08-30 22:51:18,913 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 245 transitions. [2023-08-30 22:51:18,913 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 245 transitions. [2023-08-30 22:51:18,915 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 22:51:18,917 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 245 transitions. [2023-08-30 22:51:18,920 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 61.25) internal successors, (245), 4 states have internal predecessors, (245), 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) [2023-08-30 22:51:18,924 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 124.0) internal successors, (620), 5 states have internal predecessors, (620), 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) [2023-08-30 22:51:18,924 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 124.0) internal successors, (620), 5 states have internal predecessors, (620), 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) [2023-08-30 22:51:18,925 INFO L175 Difference]: Start difference. First operand has 18 places, 14 transitions, 34 flow. Second operand 4 states and 245 transitions. [2023-08-30 22:51:18,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 26 transitions, 110 flow [2023-08-30 22:51:18,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 26 transitions, 108 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 22:51:18,928 INFO L231 Difference]: Finished difference. Result has 21 places, 15 transitions, 53 flow [2023-08-30 22:51:18,930 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=30, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=53, PETRI_PLACES=21, PETRI_TRANSITIONS=15} [2023-08-30 22:51:18,933 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 3 predicate places. [2023-08-30 22:51:18,933 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 15 transitions, 53 flow [2023-08-30 22:51:18,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 55.5) internal successors, (222), 4 states have internal predecessors, (222), 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) [2023-08-30 22:51:18,934 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 22:51:18,934 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 22:51:18,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 22:51:18,935 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 22:51:18,935 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 22:51:18,935 INFO L85 PathProgramCache]: Analyzing trace with hash 1135033148, now seen corresponding path program 1 times [2023-08-30 22:51:18,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 22:51:18,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53578201] [2023-08-30 22:51:18,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 22:51:18,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 22:51:18,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 22:51:19,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 22:51:19,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 22:51:19,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53578201] [2023-08-30 22:51:19,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53578201] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 22:51:19,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 22:51:19,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 22:51:19,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117330110] [2023-08-30 22:51:19,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 22:51:19,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 22:51:19,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 22:51:19,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 22:51:19,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 22:51:19,120 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 124 [2023-08-30 22:51:19,121 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 15 transitions, 53 flow. Second operand has 5 states, 5 states have (on average 54.6) internal successors, (273), 5 states have internal predecessors, (273), 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) [2023-08-30 22:51:19,121 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 22:51:19,121 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 124 [2023-08-30 22:51:19,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 22:51:19,228 INFO L130 PetriNetUnfolder]: 126/217 cut-off events. [2023-08-30 22:51:19,229 INFO L131 PetriNetUnfolder]: For 73/73 co-relation queries the response was YES. [2023-08-30 22:51:19,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 547 conditions, 217 events. 126/217 cut-off events. For 73/73 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 654 event pairs, 19 based on Foata normal form. 10/191 useless extension candidates. Maximal degree in co-relation 535. Up to 89 conditions per place. [2023-08-30 22:51:19,233 INFO L137 encePairwiseOnDemand]: 119/124 looper letters, 33 selfloop transitions, 9 changer transitions 0/42 dead transitions. [2023-08-30 22:51:19,233 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 42 transitions, 215 flow [2023-08-30 22:51:19,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 22:51:19,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 22:51:19,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 356 transitions. [2023-08-30 22:51:19,238 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.478494623655914 [2023-08-30 22:51:19,238 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 356 transitions. [2023-08-30 22:51:19,238 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 356 transitions. [2023-08-30 22:51:19,239 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 22:51:19,239 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 356 transitions. [2023-08-30 22:51:19,241 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 59.333333333333336) internal successors, (356), 6 states have internal predecessors, (356), 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) [2023-08-30 22:51:19,244 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 124.0) internal successors, (868), 7 states have internal predecessors, (868), 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) [2023-08-30 22:51:19,245 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 124.0) internal successors, (868), 7 states have internal predecessors, (868), 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) [2023-08-30 22:51:19,245 INFO L175 Difference]: Start difference. First operand has 21 places, 15 transitions, 53 flow. Second operand 6 states and 356 transitions. [2023-08-30 22:51:19,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 42 transitions, 215 flow [2023-08-30 22:51:19,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 42 transitions, 215 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 22:51:19,249 INFO L231 Difference]: Finished difference. Result has 29 places, 24 transitions, 134 flow [2023-08-30 22:51:19,249 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=53, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=134, PETRI_PLACES=29, PETRI_TRANSITIONS=24} [2023-08-30 22:51:19,250 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 11 predicate places. [2023-08-30 22:51:19,250 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 24 transitions, 134 flow [2023-08-30 22:51:19,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 54.6) internal successors, (273), 5 states have internal predecessors, (273), 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) [2023-08-30 22:51:19,250 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 22:51:19,251 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 22:51:19,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 22:51:19,251 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 22:51:19,251 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 22:51:19,252 INFO L85 PathProgramCache]: Analyzing trace with hash 1135047098, now seen corresponding path program 2 times [2023-08-30 22:51:19,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 22:51:19,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426099414] [2023-08-30 22:51:19,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 22:51:19,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 22:51:19,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 22:51:19,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 22:51:19,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 22:51:19,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426099414] [2023-08-30 22:51:19,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426099414] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 22:51:19,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 22:51:19,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 22:51:19,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421650443] [2023-08-30 22:51:19,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 22:51:19,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 22:51:19,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 22:51:19,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 22:51:19,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 22:51:19,390 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 124 [2023-08-30 22:51:19,390 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 24 transitions, 134 flow. Second operand has 5 states, 5 states have (on average 54.6) internal successors, (273), 5 states have internal predecessors, (273), 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) [2023-08-30 22:51:19,391 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 22:51:19,391 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 124 [2023-08-30 22:51:19,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 22:51:19,497 INFO L130 PetriNetUnfolder]: 126/219 cut-off events. [2023-08-30 22:51:19,498 INFO L131 PetriNetUnfolder]: For 298/298 co-relation queries the response was YES. [2023-08-30 22:51:19,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 722 conditions, 219 events. 126/219 cut-off events. For 298/298 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 683 event pairs, 31 based on Foata normal form. 10/229 useless extension candidates. Maximal degree in co-relation 704. Up to 87 conditions per place. [2023-08-30 22:51:19,499 INFO L137 encePairwiseOnDemand]: 119/124 looper letters, 29 selfloop transitions, 15 changer transitions 8/52 dead transitions. [2023-08-30 22:51:19,499 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 52 transitions, 348 flow [2023-08-30 22:51:19,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 22:51:19,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 22:51:19,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 413 transitions. [2023-08-30 22:51:19,501 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47580645161290325 [2023-08-30 22:51:19,501 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 413 transitions. [2023-08-30 22:51:19,502 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 413 transitions. [2023-08-30 22:51:19,502 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 22:51:19,502 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 413 transitions. [2023-08-30 22:51:19,503 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 59.0) internal successors, (413), 7 states have internal predecessors, (413), 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) [2023-08-30 22:51:19,505 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 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) [2023-08-30 22:51:19,505 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 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) [2023-08-30 22:51:19,514 INFO L175 Difference]: Start difference. First operand has 29 places, 24 transitions, 134 flow. Second operand 7 states and 413 transitions. [2023-08-30 22:51:19,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 52 transitions, 348 flow [2023-08-30 22:51:19,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 52 transitions, 344 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-08-30 22:51:19,519 INFO L231 Difference]: Finished difference. Result has 39 places, 32 transitions, 240 flow [2023-08-30 22:51:19,519 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=240, PETRI_PLACES=39, PETRI_TRANSITIONS=32} [2023-08-30 22:51:19,521 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 21 predicate places. [2023-08-30 22:51:19,523 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 32 transitions, 240 flow [2023-08-30 22:51:19,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 54.6) internal successors, (273), 5 states have internal predecessors, (273), 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) [2023-08-30 22:51:19,524 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 22:51:19,524 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 22:51:19,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 22:51:19,524 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 22:51:19,525 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 22:51:19,525 INFO L85 PathProgramCache]: Analyzing trace with hash -1601722647, now seen corresponding path program 1 times [2023-08-30 22:51:19,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 22:51:19,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367022346] [2023-08-30 22:51:19,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 22:51:19,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 22:51:19,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 22:51:19,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 22:51:19,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 22:51:19,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367022346] [2023-08-30 22:51:19,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367022346] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 22:51:19,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 22:51:19,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 22:51:19,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691955080] [2023-08-30 22:51:19,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 22:51:19,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 22:51:19,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 22:51:19,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 22:51:19,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-30 22:51:19,659 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 124 [2023-08-30 22:51:19,659 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 32 transitions, 240 flow. Second operand has 6 states, 6 states have (on average 54.666666666666664) internal successors, (328), 6 states have internal predecessors, (328), 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) [2023-08-30 22:51:19,660 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 22:51:19,660 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 124 [2023-08-30 22:51:19,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 22:51:19,790 INFO L130 PetriNetUnfolder]: 162/283 cut-off events. [2023-08-30 22:51:19,790 INFO L131 PetriNetUnfolder]: For 777/777 co-relation queries the response was YES. [2023-08-30 22:51:19,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1082 conditions, 283 events. 162/283 cut-off events. For 777/777 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 940 event pairs, 20 based on Foata normal form. 8/291 useless extension candidates. Maximal degree in co-relation 1058. Up to 71 conditions per place. [2023-08-30 22:51:19,792 INFO L137 encePairwiseOnDemand]: 119/124 looper letters, 37 selfloop transitions, 21 changer transitions 3/61 dead transitions. [2023-08-30 22:51:19,792 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 61 transitions, 488 flow [2023-08-30 22:51:19,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 22:51:19,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 22:51:19,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 470 transitions. [2023-08-30 22:51:19,795 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4737903225806452 [2023-08-30 22:51:19,795 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 470 transitions. [2023-08-30 22:51:19,795 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 470 transitions. [2023-08-30 22:51:19,796 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 22:51:19,796 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 470 transitions. [2023-08-30 22:51:19,797 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.75) internal successors, (470), 8 states have internal predecessors, (470), 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) [2023-08-30 22:51:19,799 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 124.0) internal successors, (1116), 9 states have internal predecessors, (1116), 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) [2023-08-30 22:51:19,800 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 124.0) internal successors, (1116), 9 states have internal predecessors, (1116), 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) [2023-08-30 22:51:19,800 INFO L175 Difference]: Start difference. First operand has 39 places, 32 transitions, 240 flow. Second operand 8 states and 470 transitions. [2023-08-30 22:51:19,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 61 transitions, 488 flow [2023-08-30 22:51:19,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 61 transitions, 467 flow, removed 7 selfloop flow, removed 1 redundant places. [2023-08-30 22:51:19,805 INFO L231 Difference]: Finished difference. Result has 49 places, 38 transitions, 346 flow [2023-08-30 22:51:19,805 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=219, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=346, PETRI_PLACES=49, PETRI_TRANSITIONS=38} [2023-08-30 22:51:19,806 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 31 predicate places. [2023-08-30 22:51:19,806 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 38 transitions, 346 flow [2023-08-30 22:51:19,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 54.666666666666664) internal successors, (328), 6 states have internal predecessors, (328), 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) [2023-08-30 22:51:19,807 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 22:51:19,807 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 22:51:19,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 22:51:19,807 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 22:51:19,808 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 22:51:19,808 INFO L85 PathProgramCache]: Analyzing trace with hash -1572215607, now seen corresponding path program 2 times [2023-08-30 22:51:19,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 22:51:19,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989390194] [2023-08-30 22:51:19,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 22:51:19,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 22:51:19,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 22:51:19,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 22:51:19,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 22:51:19,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989390194] [2023-08-30 22:51:19,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989390194] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 22:51:19,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 22:51:19,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 22:51:19,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61866000] [2023-08-30 22:51:19,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 22:51:19,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 22:51:19,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 22:51:19,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 22:51:19,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-30 22:51:19,912 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 124 [2023-08-30 22:51:19,913 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 38 transitions, 346 flow. Second operand has 6 states, 6 states have (on average 54.666666666666664) internal successors, (328), 6 states have internal predecessors, (328), 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) [2023-08-30 22:51:19,913 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 22:51:19,913 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 124 [2023-08-30 22:51:19,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 22:51:20,044 INFO L130 PetriNetUnfolder]: 154/271 cut-off events. [2023-08-30 22:51:20,045 INFO L131 PetriNetUnfolder]: For 1323/1323 co-relation queries the response was YES. [2023-08-30 22:51:20,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1208 conditions, 271 events. 154/271 cut-off events. For 1323/1323 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 926 event pairs, 22 based on Foata normal form. 8/279 useless extension candidates. Maximal degree in co-relation 1179. Up to 67 conditions per place. [2023-08-30 22:51:20,048 INFO L137 encePairwiseOnDemand]: 119/124 looper letters, 30 selfloop transitions, 21 changer transitions 8/59 dead transitions. [2023-08-30 22:51:20,048 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 59 transitions, 576 flow [2023-08-30 22:51:20,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 22:51:20,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 22:51:20,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 411 transitions. [2023-08-30 22:51:20,050 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4735023041474654 [2023-08-30 22:51:20,050 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 411 transitions. [2023-08-30 22:51:20,050 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 411 transitions. [2023-08-30 22:51:20,051 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 22:51:20,051 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 411 transitions. [2023-08-30 22:51:20,052 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 58.714285714285715) internal successors, (411), 7 states have internal predecessors, (411), 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) [2023-08-30 22:51:20,054 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 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) [2023-08-30 22:51:20,054 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 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) [2023-08-30 22:51:20,054 INFO L175 Difference]: Start difference. First operand has 49 places, 38 transitions, 346 flow. Second operand 7 states and 411 transitions. [2023-08-30 22:51:20,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 59 transitions, 576 flow [2023-08-30 22:51:20,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 59 transitions, 537 flow, removed 9 selfloop flow, removed 4 redundant places. [2023-08-30 22:51:20,060 INFO L231 Difference]: Finished difference. Result has 53 places, 40 transitions, 398 flow [2023-08-30 22:51:20,061 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=307, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=398, PETRI_PLACES=53, PETRI_TRANSITIONS=40} [2023-08-30 22:51:20,061 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 35 predicate places. [2023-08-30 22:51:20,061 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 40 transitions, 398 flow [2023-08-30 22:51:20,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 54.666666666666664) internal successors, (328), 6 states have internal predecessors, (328), 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) [2023-08-30 22:51:20,062 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 22:51:20,062 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 22:51:20,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 22:51:20,063 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 22:51:20,063 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 22:51:20,063 INFO L85 PathProgramCache]: Analyzing trace with hash -1494024432, now seen corresponding path program 3 times [2023-08-30 22:51:20,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 22:51:20,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462117584] [2023-08-30 22:51:20,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 22:51:20,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 22:51:20,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 22:51:20,153 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 22:51:20,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 22:51:20,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462117584] [2023-08-30 22:51:20,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462117584] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 22:51:20,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [770775182] [2023-08-30 22:51:20,155 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 22:51:20,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 22:51:20,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 22:51:20,161 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) [2023-08-30 22:51:20,182 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-30 22:51:20,237 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-30 22:51:20,240 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 22:51:20,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-30 22:51:20,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 22:51:20,435 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 22:51:20,435 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 22:51:20,578 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 22:51:20,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [770775182] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 22:51:20,579 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 22:51:20,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-08-30 22:51:20,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632076118] [2023-08-30 22:51:20,580 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 22:51:20,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 22:51:20,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 22:51:20,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 22:51:20,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2023-08-30 22:51:20,634 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 124 [2023-08-30 22:51:20,635 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 40 transitions, 398 flow. Second operand has 12 states, 12 states have (on average 54.916666666666664) internal successors, (659), 12 states have internal predecessors, (659), 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) [2023-08-30 22:51:20,635 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 22:51:20,635 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 124 [2023-08-30 22:51:20,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 22:51:20,901 INFO L130 PetriNetUnfolder]: 202/351 cut-off events. [2023-08-30 22:51:20,902 INFO L131 PetriNetUnfolder]: For 2205/2205 co-relation queries the response was YES. [2023-08-30 22:51:20,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1677 conditions, 351 events. 202/351 cut-off events. For 2205/2205 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1197 event pairs, 18 based on Foata normal form. 16/367 useless extension candidates. Maximal degree in co-relation 1647. Up to 87 conditions per place. [2023-08-30 22:51:20,905 INFO L137 encePairwiseOnDemand]: 119/124 looper letters, 34 selfloop transitions, 36 changer transitions 22/92 dead transitions. [2023-08-30 22:51:20,905 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 92 transitions, 958 flow [2023-08-30 22:51:20,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-30 22:51:20,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-30 22:51:20,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 816 transitions. [2023-08-30 22:51:20,908 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4700460829493088 [2023-08-30 22:51:20,910 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 816 transitions. [2023-08-30 22:51:20,910 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 816 transitions. [2023-08-30 22:51:20,911 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 22:51:20,911 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 816 transitions. [2023-08-30 22:51:20,923 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 58.285714285714285) internal successors, (816), 14 states have internal predecessors, (816), 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) [2023-08-30 22:51:20,926 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 124.0) internal successors, (1860), 15 states have internal predecessors, (1860), 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) [2023-08-30 22:51:20,927 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 124.0) internal successors, (1860), 15 states have internal predecessors, (1860), 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) [2023-08-30 22:51:20,927 INFO L175 Difference]: Start difference. First operand has 53 places, 40 transitions, 398 flow. Second operand 14 states and 816 transitions. [2023-08-30 22:51:20,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 92 transitions, 958 flow [2023-08-30 22:51:20,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 92 transitions, 893 flow, removed 15 selfloop flow, removed 6 redundant places. [2023-08-30 22:51:20,933 INFO L231 Difference]: Finished difference. Result has 65 places, 56 transitions, 701 flow [2023-08-30 22:51:20,934 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=353, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=701, PETRI_PLACES=65, PETRI_TRANSITIONS=56} [2023-08-30 22:51:20,936 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 47 predicate places. [2023-08-30 22:51:20,936 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 56 transitions, 701 flow [2023-08-30 22:51:20,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 54.916666666666664) internal successors, (659), 12 states have internal predecessors, (659), 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) [2023-08-30 22:51:20,936 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 22:51:20,937 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 22:51:20,949 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-30 22:51:21,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-08-30 22:51:21,143 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 22:51:21,143 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 22:51:21,144 INFO L85 PathProgramCache]: Analyzing trace with hash 976616748, now seen corresponding path program 4 times [2023-08-30 22:51:21,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 22:51:21,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804945121] [2023-08-30 22:51:21,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 22:51:21,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 22:51:21,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 22:51:21,275 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 22:51:21,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 22:51:21,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804945121] [2023-08-30 22:51:21,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804945121] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 22:51:21,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1450813682] [2023-08-30 22:51:21,277 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 22:51:21,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 22:51:21,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 22:51:21,278 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) [2023-08-30 22:51:21,300 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-30 22:51:21,348 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 22:51:21,348 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 22:51:21,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-30 22:51:21,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 22:51:21,400 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 22:51:21,401 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 22:51:21,597 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 22:51:21,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1450813682] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 22:51:21,598 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 22:51:21,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2023-08-30 22:51:21,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363209797] [2023-08-30 22:51:21,598 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 22:51:21,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-30 22:51:21,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 22:51:21,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-30 22:51:21,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2023-08-30 22:51:21,648 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 124 [2023-08-30 22:51:21,650 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 56 transitions, 701 flow. Second operand has 16 states, 16 states have (on average 54.75) internal successors, (876), 16 states have internal predecessors, (876), 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) [2023-08-30 22:51:21,651 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 22:51:21,651 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 124 [2023-08-30 22:51:21,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 22:51:21,941 INFO L130 PetriNetUnfolder]: 258/463 cut-off events. [2023-08-30 22:51:21,942 INFO L131 PetriNetUnfolder]: For 4313/4313 co-relation queries the response was YES. [2023-08-30 22:51:21,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2445 conditions, 463 events. 258/463 cut-off events. For 4313/4313 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1664 event pairs, 55 based on Foata normal form. 32/495 useless extension candidates. Maximal degree in co-relation 2411. Up to 237 conditions per place. [2023-08-30 22:51:21,944 INFO L137 encePairwiseOnDemand]: 119/124 looper letters, 64 selfloop transitions, 27 changer transitions 27/118 dead transitions. [2023-08-30 22:51:21,944 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 118 transitions, 1469 flow [2023-08-30 22:51:21,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-30 22:51:21,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-30 22:51:21,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 931 transitions. [2023-08-30 22:51:21,946 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4692540322580645 [2023-08-30 22:51:21,946 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 931 transitions. [2023-08-30 22:51:21,947 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 931 transitions. [2023-08-30 22:51:21,947 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 22:51:21,947 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 931 transitions. [2023-08-30 22:51:21,949 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 58.1875) internal successors, (931), 16 states have internal predecessors, (931), 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) [2023-08-30 22:51:21,951 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 124.0) internal successors, (2108), 17 states have internal predecessors, (2108), 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) [2023-08-30 22:51:21,951 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 124.0) internal successors, (2108), 17 states have internal predecessors, (2108), 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) [2023-08-30 22:51:21,951 INFO L175 Difference]: Start difference. First operand has 65 places, 56 transitions, 701 flow. Second operand 16 states and 931 transitions. [2023-08-30 22:51:21,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 118 transitions, 1469 flow [2023-08-30 22:51:21,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 118 transitions, 1110 flow, removed 167 selfloop flow, removed 5 redundant places. [2023-08-30 22:51:21,959 INFO L231 Difference]: Finished difference. Result has 85 places, 70 transitions, 781 flow [2023-08-30 22:51:21,960 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=506, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=781, PETRI_PLACES=85, PETRI_TRANSITIONS=70} [2023-08-30 22:51:21,960 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 67 predicate places. [2023-08-30 22:51:21,960 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 70 transitions, 781 flow [2023-08-30 22:51:21,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 54.75) internal successors, (876), 16 states have internal predecessors, (876), 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) [2023-08-30 22:51:21,961 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 22:51:21,961 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 22:51:21,970 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-30 22:51:22,166 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,SelfDestructingSolverStorable6 [2023-08-30 22:51:22,167 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 22:51:22,167 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 22:51:22,168 INFO L85 PathProgramCache]: Analyzing trace with hash 921314670, now seen corresponding path program 5 times [2023-08-30 22:51:22,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 22:51:22,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237042638] [2023-08-30 22:51:22,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 22:51:22,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 22:51:22,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 22:51:22,303 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 22:51:22,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 22:51:22,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237042638] [2023-08-30 22:51:22,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237042638] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 22:51:22,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [558277581] [2023-08-30 22:51:22,304 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-30 22:51:22,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 22:51:22,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 22:51:22,305 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) [2023-08-30 22:51:22,308 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-30 22:51:22,373 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-08-30 22:51:22,373 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 22:51:22,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-30 22:51:22,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 22:51:22,412 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 22:51:22,412 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 22:51:22,558 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 22:51:22,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [558277581] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 22:51:22,559 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 22:51:22,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2023-08-30 22:51:22,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684903683] [2023-08-30 22:51:22,559 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 22:51:22,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-30 22:51:22,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 22:51:22,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-30 22:51:22,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2023-08-30 22:51:22,641 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 124 [2023-08-30 22:51:22,643 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 70 transitions, 781 flow. Second operand has 17 states, 17 states have (on average 54.76470588235294) internal successors, (931), 17 states have internal predecessors, (931), 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) [2023-08-30 22:51:22,643 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 22:51:22,643 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 124 [2023-08-30 22:51:22,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 22:51:23,060 INFO L130 PetriNetUnfolder]: 412/755 cut-off events. [2023-08-30 22:51:23,060 INFO L131 PetriNetUnfolder]: For 12149/12149 co-relation queries the response was YES. [2023-08-30 22:51:23,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4019 conditions, 755 events. 412/755 cut-off events. For 12149/12149 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 3350 event pairs, 42 based on Foata normal form. 32/787 useless extension candidates. Maximal degree in co-relation 3976. Up to 227 conditions per place. [2023-08-30 22:51:23,065 INFO L137 encePairwiseOnDemand]: 119/124 looper letters, 73 selfloop transitions, 72 changer transitions 37/182 dead transitions. [2023-08-30 22:51:23,066 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 182 transitions, 2101 flow [2023-08-30 22:51:23,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-08-30 22:51:23,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-08-30 22:51:23,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1280 transitions. [2023-08-30 22:51:23,070 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46920821114369504 [2023-08-30 22:51:23,070 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 1280 transitions. [2023-08-30 22:51:23,070 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 1280 transitions. [2023-08-30 22:51:23,071 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 22:51:23,071 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 1280 transitions. [2023-08-30 22:51:23,074 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 58.18181818181818) internal successors, (1280), 22 states have internal predecessors, (1280), 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) [2023-08-30 22:51:23,077 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 124.0) internal successors, (2852), 23 states have internal predecessors, (2852), 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) [2023-08-30 22:51:23,078 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 124.0) internal successors, (2852), 23 states have internal predecessors, (2852), 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) [2023-08-30 22:51:23,078 INFO L175 Difference]: Start difference. First operand has 85 places, 70 transitions, 781 flow. Second operand 22 states and 1280 transitions. [2023-08-30 22:51:23,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 182 transitions, 2101 flow [2023-08-30 22:51:23,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 182 transitions, 1980 flow, removed 51 selfloop flow, removed 4 redundant places. [2023-08-30 22:51:23,109 INFO L231 Difference]: Finished difference. Result has 116 places, 108 transitions, 1490 flow [2023-08-30 22:51:23,110 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=678, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1490, PETRI_PLACES=116, PETRI_TRANSITIONS=108} [2023-08-30 22:51:23,112 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 98 predicate places. [2023-08-30 22:51:23,114 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 108 transitions, 1490 flow [2023-08-30 22:51:23,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 54.76470588235294) internal successors, (931), 17 states have internal predecessors, (931), 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) [2023-08-30 22:51:23,114 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 22:51:23,115 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 22:51:23,124 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-30 22:51:23,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 22:51:23,317 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 22:51:23,318 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 22:51:23,318 INFO L85 PathProgramCache]: Analyzing trace with hash 1348503086, now seen corresponding path program 6 times [2023-08-30 22:51:23,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 22:51:23,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145491253] [2023-08-30 22:51:23,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 22:51:23,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 22:51:23,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 22:51:23,418 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 22:51:23,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 22:51:23,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145491253] [2023-08-30 22:51:23,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145491253] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 22:51:23,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1227363512] [2023-08-30 22:51:23,419 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-30 22:51:23,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 22:51:23,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 22:51:23,421 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 22:51:23,450 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-30 22:51:23,502 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2023-08-30 22:51:23,502 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 22:51:23,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-30 22:51:23,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 22:51:23,527 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 22:51:23,528 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 22:51:23,627 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 22:51:23,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1227363512] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 22:51:23,628 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 22:51:23,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2023-08-30 22:51:23,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626383216] [2023-08-30 22:51:23,629 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 22:51:23,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-30 22:51:23,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 22:51:23,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-30 22:51:23,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2023-08-30 22:51:23,671 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 124 [2023-08-30 22:51:23,672 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 108 transitions, 1490 flow. Second operand has 16 states, 16 states have (on average 54.75) internal successors, (876), 16 states have internal predecessors, (876), 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) [2023-08-30 22:51:23,672 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 22:51:23,672 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 124 [2023-08-30 22:51:23,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 22:51:24,229 INFO L130 PetriNetUnfolder]: 612/1111 cut-off events. [2023-08-30 22:51:24,230 INFO L131 PetriNetUnfolder]: For 38046/38046 co-relation queries the response was YES. [2023-08-30 22:51:24,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7830 conditions, 1111 events. 612/1111 cut-off events. For 38046/38046 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 5398 event pairs, 30 based on Foata normal form. 36/1147 useless extension candidates. Maximal degree in co-relation 7772. Up to 355 conditions per place. [2023-08-30 22:51:24,239 INFO L137 encePairwiseOnDemand]: 119/124 looper letters, 71 selfloop transitions, 134 changer transitions 41/246 dead transitions. [2023-08-30 22:51:24,239 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 246 transitions, 3764 flow [2023-08-30 22:51:24,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-08-30 22:51:24,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-08-30 22:51:24,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 1571 transitions. [2023-08-30 22:51:24,244 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4692353643966547 [2023-08-30 22:51:24,245 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 1571 transitions. [2023-08-30 22:51:24,245 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 1571 transitions. [2023-08-30 22:51:24,246 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 22:51:24,246 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 1571 transitions. [2023-08-30 22:51:24,250 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 58.18518518518518) internal successors, (1571), 27 states have internal predecessors, (1571), 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) [2023-08-30 22:51:24,255 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 124.0) internal successors, (3472), 28 states have internal predecessors, (3472), 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) [2023-08-30 22:51:24,256 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 124.0) internal successors, (3472), 28 states have internal predecessors, (3472), 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) [2023-08-30 22:51:24,256 INFO L175 Difference]: Start difference. First operand has 116 places, 108 transitions, 1490 flow. Second operand 27 states and 1571 transitions. [2023-08-30 22:51:24,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 246 transitions, 3764 flow [2023-08-30 22:51:24,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 246 transitions, 3448 flow, removed 148 selfloop flow, removed 4 redundant places. [2023-08-30 22:51:24,323 INFO L231 Difference]: Finished difference. Result has 153 places, 158 transitions, 2642 flow [2023-08-30 22:51:24,324 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=1256, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=2642, PETRI_PLACES=153, PETRI_TRANSITIONS=158} [2023-08-30 22:51:24,324 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 135 predicate places. [2023-08-30 22:51:24,325 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 158 transitions, 2642 flow [2023-08-30 22:51:24,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 54.75) internal successors, (876), 16 states have internal predecessors, (876), 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) [2023-08-30 22:51:24,325 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 22:51:24,325 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 22:51:24,335 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-30 22:51:24,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 22:51:24,532 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 22:51:24,533 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 22:51:24,533 INFO L85 PathProgramCache]: Analyzing trace with hash -1579002867, now seen corresponding path program 7 times [2023-08-30 22:51:24,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 22:51:24,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496795492] [2023-08-30 22:51:24,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 22:51:24,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 22:51:24,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 22:51:24,655 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 22:51:24,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 22:51:24,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496795492] [2023-08-30 22:51:24,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496795492] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 22:51:24,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1425653193] [2023-08-30 22:51:24,656 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-30 22:51:24,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 22:51:24,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 22:51:24,661 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 22:51:24,664 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-30 22:51:24,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 22:51:24,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-30 22:51:24,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 22:51:24,764 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 22:51:24,765 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 22:51:24,853 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 22:51:24,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1425653193] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 22:51:24,853 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 22:51:24,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 16 [2023-08-30 22:51:24,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380591602] [2023-08-30 22:51:24,854 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 22:51:24,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-30 22:51:24,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 22:51:24,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-30 22:51:24,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2023-08-30 22:51:24,898 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 124 [2023-08-30 22:51:24,899 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 158 transitions, 2642 flow. Second operand has 18 states, 18 states have (on average 54.72222222222222) internal successors, (985), 18 states have internal predecessors, (985), 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) [2023-08-30 22:51:24,899 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 22:51:24,899 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 124 [2023-08-30 22:51:24,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 22:51:25,632 INFO L130 PetriNetUnfolder]: 756/1375 cut-off events. [2023-08-30 22:51:25,632 INFO L131 PetriNetUnfolder]: For 84547/84547 co-relation queries the response was YES. [2023-08-30 22:51:25,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12537 conditions, 1375 events. 756/1375 cut-off events. For 84547/84547 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 6872 event pairs, 12 based on Foata normal form. 40/1415 useless extension candidates. Maximal degree in co-relation 12465. Up to 458 conditions per place. [2023-08-30 22:51:25,648 INFO L137 encePairwiseOnDemand]: 119/124 looper letters, 62 selfloop transitions, 176 changer transitions 54/292 dead transitions. [2023-08-30 22:51:25,648 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 292 transitions, 6017 flow [2023-08-30 22:51:25,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-08-30 22:51:25,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2023-08-30 22:51:25,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 1744 transitions. [2023-08-30 22:51:25,655 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46881720430107526 [2023-08-30 22:51:25,655 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 1744 transitions. [2023-08-30 22:51:25,655 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 1744 transitions. [2023-08-30 22:51:25,656 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 22:51:25,656 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 1744 transitions. [2023-08-30 22:51:25,662 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 58.13333333333333) internal successors, (1744), 30 states have internal predecessors, (1744), 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) [2023-08-30 22:51:25,667 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 124.0) internal successors, (3844), 31 states have internal predecessors, (3844), 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) [2023-08-30 22:51:25,668 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 124.0) internal successors, (3844), 31 states have internal predecessors, (3844), 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) [2023-08-30 22:51:25,668 INFO L175 Difference]: Start difference. First operand has 153 places, 158 transitions, 2642 flow. Second operand 30 states and 1744 transitions. [2023-08-30 22:51:25,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 292 transitions, 6017 flow [2023-08-30 22:51:25,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 292 transitions, 4596 flow, removed 681 selfloop flow, removed 11 redundant places. [2023-08-30 22:51:25,833 INFO L231 Difference]: Finished difference. Result has 186 places, 202 transitions, 3515 flow [2023-08-30 22:51:25,834 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=2013, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=133, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=3515, PETRI_PLACES=186, PETRI_TRANSITIONS=202} [2023-08-30 22:51:25,834 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 168 predicate places. [2023-08-30 22:51:25,835 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 202 transitions, 3515 flow [2023-08-30 22:51:25,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 54.72222222222222) internal successors, (985), 18 states have internal predecessors, (985), 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) [2023-08-30 22:51:25,835 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 22:51:25,835 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 22:51:25,843 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-30 22:51:26,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-08-30 22:51:26,044 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 22:51:26,044 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 22:51:26,044 INFO L85 PathProgramCache]: Analyzing trace with hash -513553686, now seen corresponding path program 8 times [2023-08-30 22:51:26,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 22:51:26,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192893626] [2023-08-30 22:51:26,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 22:51:26,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 22:51:26,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 22:51:26,324 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 22:51:26,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 22:51:26,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192893626] [2023-08-30 22:51:26,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192893626] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 22:51:26,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [223195586] [2023-08-30 22:51:26,325 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 22:51:26,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 22:51:26,326 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 22:51:26,327 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 22:51:26,352 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-30 22:51:26,405 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 22:51:26,406 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 22:51:26,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-30 22:51:26,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 22:51:26,468 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 22:51:26,468 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 22:51:26,684 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 22:51:26,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [223195586] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 22:51:26,685 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 22:51:26,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 29 [2023-08-30 22:51:26,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152069006] [2023-08-30 22:51:26,685 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 22:51:26,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-08-30 22:51:26,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 22:51:26,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-08-30 22:51:26,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=222, Invalid=708, Unknown=0, NotChecked=0, Total=930 [2023-08-30 22:51:26,746 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 124 [2023-08-30 22:51:26,749 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 202 transitions, 3515 flow. Second operand has 31 states, 31 states have (on average 54.354838709677416) internal successors, (1685), 31 states have internal predecessors, (1685), 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) [2023-08-30 22:51:26,749 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 22:51:26,749 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 124 [2023-08-30 22:51:26,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 22:51:28,199 INFO L130 PetriNetUnfolder]: 940/1683 cut-off events. [2023-08-30 22:51:28,199 INFO L131 PetriNetUnfolder]: For 117881/117881 co-relation queries the response was YES. [2023-08-30 22:51:28,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16451 conditions, 1683 events. 940/1683 cut-off events. For 117881/117881 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 7975 event pairs, 18 based on Foata normal form. 52/1735 useless extension candidates. Maximal degree in co-relation 16366. Up to 574 conditions per place. [2023-08-30 22:51:28,217 INFO L137 encePairwiseOnDemand]: 119/124 looper letters, 90 selfloop transitions, 222 changer transitions 98/410 dead transitions. [2023-08-30 22:51:28,218 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 410 transitions, 8862 flow [2023-08-30 22:51:28,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2023-08-30 22:51:28,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2023-08-30 22:51:28,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 3014 transitions. [2023-08-30 22:51:28,222 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4674317617866005 [2023-08-30 22:51:28,223 INFO L72 ComplementDD]: Start complementDD. Operand 52 states and 3014 transitions. [2023-08-30 22:51:28,223 INFO L73 IsDeterministic]: Start isDeterministic. Operand 52 states and 3014 transitions. [2023-08-30 22:51:28,225 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 22:51:28,226 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 52 states and 3014 transitions. [2023-08-30 22:51:28,230 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 53 states, 52 states have (on average 57.96153846153846) internal successors, (3014), 52 states have internal predecessors, (3014), 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) [2023-08-30 22:51:28,238 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 53 states, 53 states have (on average 124.0) internal successors, (6572), 53 states have internal predecessors, (6572), 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) [2023-08-30 22:51:28,240 INFO L81 ComplementDD]: Finished complementDD. Result has 53 states, 53 states have (on average 124.0) internal successors, (6572), 53 states have internal predecessors, (6572), 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) [2023-08-30 22:51:28,240 INFO L175 Difference]: Start difference. First operand has 186 places, 202 transitions, 3515 flow. Second operand 52 states and 3014 transitions. [2023-08-30 22:51:28,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 410 transitions, 8862 flow [2023-08-30 22:51:28,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 410 transitions, 7981 flow, removed 412 selfloop flow, removed 8 redundant places. [2023-08-30 22:51:28,519 INFO L231 Difference]: Finished difference. Result has 255 places, 248 transitions, 5156 flow [2023-08-30 22:51:28,520 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=2952, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=177, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=52, PETRI_FLOW=5156, PETRI_PLACES=255, PETRI_TRANSITIONS=248} [2023-08-30 22:51:28,520 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 237 predicate places. [2023-08-30 22:51:28,520 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 248 transitions, 5156 flow [2023-08-30 22:51:28,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 54.354838709677416) internal successors, (1685), 31 states have internal predecessors, (1685), 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) [2023-08-30 22:51:28,521 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 22:51:28,521 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 11, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 22:51:28,528 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-30 22:51:28,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 22:51:28,728 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 22:51:28,728 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 22:51:28,728 INFO L85 PathProgramCache]: Analyzing trace with hash -672099493, now seen corresponding path program 9 times [2023-08-30 22:51:28,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 22:51:28,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904649245] [2023-08-30 22:51:28,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 22:51:28,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 22:51:28,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 22:51:29,269 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 22:51:29,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 22:51:29,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904649245] [2023-08-30 22:51:29,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904649245] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 22:51:29,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1149072628] [2023-08-30 22:51:29,270 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 22:51:29,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 22:51:29,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 22:51:29,273 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 22:51:29,283 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-30 22:51:29,372 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2023-08-30 22:51:29,372 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 22:51:29,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 28 conjunts are in the unsatisfiable core [2023-08-30 22:51:29,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 22:51:29,451 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 22:51:29,451 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 22:51:30,102 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 22:51:30,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1149072628] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 22:51:30,103 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 22:51:30,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 48 [2023-08-30 22:51:30,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309842225] [2023-08-30 22:51:30,103 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 22:51:30,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2023-08-30 22:51:30,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 22:51:30,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2023-08-30 22:51:30,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=580, Invalid=1870, Unknown=0, NotChecked=0, Total=2450 [2023-08-30 22:51:30,250 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 124 [2023-08-30 22:51:30,252 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 248 transitions, 5156 flow. Second operand has 50 states, 50 states have (on average 54.2) internal successors, (2710), 50 states have internal predecessors, (2710), 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) [2023-08-30 22:51:30,252 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 22:51:30,252 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 124 [2023-08-30 22:51:30,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 22:51:32,004 INFO L130 PetriNetUnfolder]: 1300/2403 cut-off events. [2023-08-30 22:51:32,004 INFO L131 PetriNetUnfolder]: For 323719/323719 co-relation queries the response was YES. [2023-08-30 22:51:32,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31690 conditions, 2403 events. 1300/2403 cut-off events. For 323719/323719 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 12185 event pairs, 236 based on Foata normal form. 72/2475 useless extension candidates. Maximal degree in co-relation 31579. Up to 993 conditions per place. [2023-08-30 22:51:32,039 INFO L137 encePairwiseOnDemand]: 119/124 looper letters, 219 selfloop transitions, 179 changer transitions 103/501 dead transitions. [2023-08-30 22:51:32,040 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 501 transitions, 14353 flow [2023-08-30 22:51:32,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2023-08-30 22:51:32,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2023-08-30 22:51:32,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 3109 transitions. [2023-08-30 22:51:32,046 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46430704898446834 [2023-08-30 22:51:32,046 INFO L72 ComplementDD]: Start complementDD. Operand 54 states and 3109 transitions. [2023-08-30 22:51:32,046 INFO L73 IsDeterministic]: Start isDeterministic. Operand 54 states and 3109 transitions. [2023-08-30 22:51:32,047 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 22:51:32,048 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 54 states and 3109 transitions. [2023-08-30 22:51:32,053 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 55 states, 54 states have (on average 57.574074074074076) internal successors, (3109), 54 states have internal predecessors, (3109), 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) [2023-08-30 22:51:32,073 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 55 states, 55 states have (on average 124.0) internal successors, (6820), 55 states have internal predecessors, (6820), 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) [2023-08-30 22:51:32,075 INFO L81 ComplementDD]: Finished complementDD. Result has 55 states, 55 states have (on average 124.0) internal successors, (6820), 55 states have internal predecessors, (6820), 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) [2023-08-30 22:51:32,076 INFO L175 Difference]: Start difference. First operand has 255 places, 248 transitions, 5156 flow. Second operand 54 states and 3109 transitions. [2023-08-30 22:51:32,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 501 transitions, 14353 flow [2023-08-30 22:51:32,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 501 transitions, 11122 flow, removed 1538 selfloop flow, removed 16 redundant places. [2023-08-30 22:51:32,908 INFO L231 Difference]: Finished difference. Result has 316 places, 340 transitions, 6942 flow [2023-08-30 22:51:32,909 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=3771, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=54, PETRI_FLOW=6942, PETRI_PLACES=316, PETRI_TRANSITIONS=340} [2023-08-30 22:51:32,909 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 298 predicate places. [2023-08-30 22:51:32,909 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 340 transitions, 6942 flow [2023-08-30 22:51:32,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 54.2) internal successors, (2710), 50 states have internal predecessors, (2710), 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) [2023-08-30 22:51:32,910 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 22:51:32,911 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 11, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 22:51:32,917 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-30 22:51:33,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 22:51:33,116 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 22:51:33,117 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 22:51:33,117 INFO L85 PathProgramCache]: Analyzing trace with hash 499642727, now seen corresponding path program 10 times [2023-08-30 22:51:33,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 22:51:33,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908004915] [2023-08-30 22:51:33,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 22:51:33,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 22:51:33,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 22:51:33,602 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 22:51:33,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 22:51:33,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908004915] [2023-08-30 22:51:33,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908004915] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 22:51:33,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1656003049] [2023-08-30 22:51:33,603 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 22:51:33,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 22:51:33,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 22:51:33,605 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 22:51:33,627 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-30 22:51:33,693 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 22:51:33,693 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 22:51:33,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 28 conjunts are in the unsatisfiable core [2023-08-30 22:51:33,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 22:51:33,812 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 22:51:33,812 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 22:51:34,516 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 22:51:34,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1656003049] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 22:51:34,517 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 22:51:34,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 49 [2023-08-30 22:51:34,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34111790] [2023-08-30 22:51:34,517 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 22:51:34,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2023-08-30 22:51:34,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 22:51:34,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2023-08-30 22:51:34,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=457, Invalid=2093, Unknown=0, NotChecked=0, Total=2550 [2023-08-30 22:51:34,642 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 124 [2023-08-30 22:51:34,644 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 340 transitions, 6942 flow. Second operand has 51 states, 51 states have (on average 54.23529411764706) internal successors, (2766), 51 states have internal predecessors, (2766), 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) [2023-08-30 22:51:34,644 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 22:51:34,644 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 124 [2023-08-30 22:51:34,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 22:51:37,220 INFO L130 PetriNetUnfolder]: 1632/3063 cut-off events. [2023-08-30 22:51:37,221 INFO L131 PetriNetUnfolder]: For 708353/708353 co-relation queries the response was YES. [2023-08-30 22:51:37,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45122 conditions, 3063 events. 1632/3063 cut-off events. For 708353/708353 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 16234 event pairs, 72 based on Foata normal form. 72/3135 useless extension candidates. Maximal degree in co-relation 44986. Up to 1246 conditions per place. [2023-08-30 22:51:37,272 INFO L137 encePairwiseOnDemand]: 119/124 looper letters, 131 selfloop transitions, 361 changer transitions 123/615 dead transitions. [2023-08-30 22:51:37,272 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 379 places, 615 transitions, 16914 flow [2023-08-30 22:51:37,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2023-08-30 22:51:37,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2023-08-30 22:51:37,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 3692 transitions. [2023-08-30 22:51:37,277 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4652217741935484 [2023-08-30 22:51:37,278 INFO L72 ComplementDD]: Start complementDD. Operand 64 states and 3692 transitions. [2023-08-30 22:51:37,278 INFO L73 IsDeterministic]: Start isDeterministic. Operand 64 states and 3692 transitions. [2023-08-30 22:51:37,279 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 22:51:37,279 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 64 states and 3692 transitions. [2023-08-30 22:51:37,285 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 65 states, 64 states have (on average 57.6875) internal successors, (3692), 64 states have internal predecessors, (3692), 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) [2023-08-30 22:51:37,293 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 65 states, 65 states have (on average 124.0) internal successors, (8060), 65 states have internal predecessors, (8060), 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) [2023-08-30 22:51:37,295 INFO L81 ComplementDD]: Finished complementDD. Result has 65 states, 65 states have (on average 124.0) internal successors, (8060), 65 states have internal predecessors, (8060), 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) [2023-08-30 22:51:37,295 INFO L175 Difference]: Start difference. First operand has 316 places, 340 transitions, 6942 flow. Second operand 64 states and 3692 transitions. [2023-08-30 22:51:37,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 379 places, 615 transitions, 16914 flow [2023-08-30 22:51:38,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 615 transitions, 15212 flow, removed 784 selfloop flow, removed 21 redundant places. [2023-08-30 22:51:38,752 INFO L231 Difference]: Finished difference. Result has 379 places, 425 transitions, 9430 flow [2023-08-30 22:51:38,753 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=5516, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=340, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=288, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=64, PETRI_FLOW=9430, PETRI_PLACES=379, PETRI_TRANSITIONS=425} [2023-08-30 22:51:38,753 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 361 predicate places. [2023-08-30 22:51:38,754 INFO L495 AbstractCegarLoop]: Abstraction has has 379 places, 425 transitions, 9430 flow [2023-08-30 22:51:38,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 54.23529411764706) internal successors, (2766), 51 states have internal predecessors, (2766), 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) [2023-08-30 22:51:38,755 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 22:51:38,755 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 11, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 22:51:38,763 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-30 22:51:38,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-08-30 22:51:38,960 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 22:51:38,961 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 22:51:38,961 INFO L85 PathProgramCache]: Analyzing trace with hash -954991693, now seen corresponding path program 11 times [2023-08-30 22:51:38,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 22:51:38,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756684171] [2023-08-30 22:51:38,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 22:51:38,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 22:51:38,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 22:51:39,382 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 22:51:39,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 22:51:39,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756684171] [2023-08-30 22:51:39,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756684171] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 22:51:39,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1530951960] [2023-08-30 22:51:39,383 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-30 22:51:39,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 22:51:39,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 22:51:39,385 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 22:51:39,389 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-30 22:51:39,465 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2023-08-30 22:51:39,465 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 22:51:39,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 28 conjunts are in the unsatisfiable core [2023-08-30 22:51:39,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 22:51:39,552 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 22:51:39,552 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 22:51:40,072 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 22:51:40,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1530951960] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 22:51:40,073 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 22:51:40,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 49 [2023-08-30 22:51:40,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199718052] [2023-08-30 22:51:40,073 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 22:51:40,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2023-08-30 22:51:40,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 22:51:40,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2023-08-30 22:51:40,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=457, Invalid=2093, Unknown=0, NotChecked=0, Total=2550 [2023-08-30 22:51:40,191 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 124 [2023-08-30 22:51:40,192 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 379 places, 425 transitions, 9430 flow. Second operand has 51 states, 51 states have (on average 54.23529411764706) internal successors, (2766), 51 states have internal predecessors, (2766), 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) [2023-08-30 22:51:40,193 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 22:51:40,193 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 124 [2023-08-30 22:51:40,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 22:51:43,393 INFO L130 PetriNetUnfolder]: 1988/3695 cut-off events. [2023-08-30 22:51:43,393 INFO L131 PetriNetUnfolder]: For 1289952/1289952 co-relation queries the response was YES. [2023-08-30 22:51:43,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64940 conditions, 3695 events. 1988/3695 cut-off events. For 1289952/1289952 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 19523 event pairs, 10 based on Foata normal form. 84/3779 useless extension candidates. Maximal degree in co-relation 64793. Up to 1514 conditions per place. [2023-08-30 22:51:43,451 INFO L137 encePairwiseOnDemand]: 119/124 looper letters, 119 selfloop transitions, 486 changer transitions 161/766 dead transitions. [2023-08-30 22:51:43,451 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 462 places, 766 transitions, 25506 flow [2023-08-30 22:51:43,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2023-08-30 22:51:43,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2023-08-30 22:51:43,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 4855 transitions. [2023-08-30 22:51:43,460 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46610983102918585 [2023-08-30 22:51:43,460 INFO L72 ComplementDD]: Start complementDD. Operand 84 states and 4855 transitions. [2023-08-30 22:51:43,460 INFO L73 IsDeterministic]: Start isDeterministic. Operand 84 states and 4855 transitions. [2023-08-30 22:51:43,462 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 22:51:43,462 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 84 states and 4855 transitions. [2023-08-30 22:51:43,469 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 85 states, 84 states have (on average 57.79761904761905) internal successors, (4855), 84 states have internal predecessors, (4855), 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) [2023-08-30 22:51:43,481 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 85 states, 85 states have (on average 124.0) internal successors, (10540), 85 states have internal predecessors, (10540), 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) [2023-08-30 22:51:43,483 INFO L81 ComplementDD]: Finished complementDD. Result has 85 states, 85 states have (on average 124.0) internal successors, (10540), 85 states have internal predecessors, (10540), 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) [2023-08-30 22:51:43,483 INFO L175 Difference]: Start difference. First operand has 379 places, 425 transitions, 9430 flow. Second operand 84 states and 4855 transitions. [2023-08-30 22:51:43,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 462 places, 766 transitions, 25506 flow [2023-08-30 22:51:45,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 437 places, 766 transitions, 22525 flow, removed 1302 selfloop flow, removed 25 redundant places. [2023-08-30 22:51:45,813 INFO L231 Difference]: Finished difference. Result has 471 places, 516 transitions, 13279 flow [2023-08-30 22:51:45,814 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=7177, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=425, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=396, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=84, PETRI_FLOW=13279, PETRI_PLACES=471, PETRI_TRANSITIONS=516} [2023-08-30 22:51:45,814 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 453 predicate places. [2023-08-30 22:51:45,814 INFO L495 AbstractCegarLoop]: Abstraction has has 471 places, 516 transitions, 13279 flow [2023-08-30 22:51:45,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 54.23529411764706) internal successors, (2766), 51 states have internal predecessors, (2766), 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) [2023-08-30 22:51:45,815 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 22:51:45,815 INFO L208 CegarLoopForPetriNet]: trace histogram [17, 16, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 22:51:45,826 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-08-30 22:51:46,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-08-30 22:51:46,021 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 22:51:46,021 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 22:51:46,021 INFO L85 PathProgramCache]: Analyzing trace with hash -193875302, now seen corresponding path program 12 times [2023-08-30 22:51:46,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 22:51:46,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693156866] [2023-08-30 22:51:46,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 22:51:46,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 22:51:46,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 22:51:46,621 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 0 proven. 256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 22:51:46,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 22:51:46,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693156866] [2023-08-30 22:51:46,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693156866] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 22:51:46,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [777473158] [2023-08-30 22:51:46,622 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-30 22:51:46,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 22:51:46,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 22:51:46,626 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 22:51:46,629 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-30 22:51:46,722 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 17 check-sat command(s) [2023-08-30 22:51:46,723 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 22:51:46,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 39 conjunts are in the unsatisfiable core [2023-08-30 22:51:46,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 22:51:46,783 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 0 proven. 256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 22:51:46,783 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 22:51:47,458 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 0 proven. 256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 22:51:47,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [777473158] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 22:51:47,458 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 22:51:47,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35, 35] total 70 [2023-08-30 22:51:47,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355849520] [2023-08-30 22:51:47,459 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 22:51:47,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2023-08-30 22:51:47,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 22:51:47,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2023-08-30 22:51:47,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1211, Invalid=3901, Unknown=0, NotChecked=0, Total=5112 [2023-08-30 22:51:47,572 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 124 [2023-08-30 22:51:47,575 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 471 places, 516 transitions, 13279 flow. Second operand has 72 states, 72 states have (on average 54.138888888888886) internal successors, (3898), 72 states have internal predecessors, (3898), 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) [2023-08-30 22:51:47,575 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 22:51:47,575 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 124 [2023-08-30 22:51:47,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 22:51:51,589 INFO L130 PetriNetUnfolder]: 2388/4423 cut-off events. [2023-08-30 22:51:51,589 INFO L131 PetriNetUnfolder]: For 2531362/2531362 co-relation queries the response was YES. [2023-08-30 22:51:51,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97549 conditions, 4423 events. 2388/4423 cut-off events. For 2531362/2531362 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 23548 event pairs, 22 based on Foata normal form. 48/4471 useless extension candidates. Maximal degree in co-relation 97367. Up to 1818 conditions per place. [2023-08-30 22:51:51,738 INFO L137 encePairwiseOnDemand]: 119/124 looper letters, 146 selfloop transitions, 582 changer transitions 167/895 dead transitions. [2023-08-30 22:51:51,738 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 560 places, 895 transitions, 35696 flow [2023-08-30 22:51:51,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2023-08-30 22:51:51,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2023-08-30 22:51:51,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 5197 transitions. [2023-08-30 22:51:51,745 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46568100358422937 [2023-08-30 22:51:51,745 INFO L72 ComplementDD]: Start complementDD. Operand 90 states and 5197 transitions. [2023-08-30 22:51:51,745 INFO L73 IsDeterministic]: Start isDeterministic. Operand 90 states and 5197 transitions. [2023-08-30 22:51:51,746 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 22:51:51,747 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 90 states and 5197 transitions. [2023-08-30 22:51:51,753 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 91 states, 90 states have (on average 57.74444444444445) internal successors, (5197), 90 states have internal predecessors, (5197), 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) [2023-08-30 22:51:51,764 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 91 states, 91 states have (on average 124.0) internal successors, (11284), 91 states have internal predecessors, (11284), 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) [2023-08-30 22:51:51,765 INFO L81 ComplementDD]: Finished complementDD. Result has 91 states, 91 states have (on average 124.0) internal successors, (11284), 91 states have internal predecessors, (11284), 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) [2023-08-30 22:51:51,765 INFO L175 Difference]: Start difference. First operand has 471 places, 516 transitions, 13279 flow. Second operand 90 states and 5197 transitions. [2023-08-30 22:51:51,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 560 places, 895 transitions, 35696 flow [2023-08-30 22:51:57,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 530 places, 895 transitions, 28082 flow, removed 3567 selfloop flow, removed 30 redundant places. [2023-08-30 22:51:57,253 INFO L231 Difference]: Finished difference. Result has 552 places, 614 transitions, 14996 flow [2023-08-30 22:51:57,254 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=8881, PETRI_DIFFERENCE_MINUEND_PLACES=441, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=516, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=485, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=90, PETRI_FLOW=14996, PETRI_PLACES=552, PETRI_TRANSITIONS=614} [2023-08-30 22:51:57,254 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 534 predicate places. [2023-08-30 22:51:57,254 INFO L495 AbstractCegarLoop]: Abstraction has has 552 places, 614 transitions, 14996 flow [2023-08-30 22:51:57,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 72 states have (on average 54.138888888888886) internal successors, (3898), 72 states have internal predecessors, (3898), 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) [2023-08-30 22:51:57,255 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 22:51:57,256 INFO L208 CegarLoopForPetriNet]: trace histogram [19, 19, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 22:51:57,261 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-30 22:51:57,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-30 22:51:57,461 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 22:51:57,462 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 22:51:57,462 INFO L85 PathProgramCache]: Analyzing trace with hash 432945037, now seen corresponding path program 13 times [2023-08-30 22:51:57,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 22:51:57,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944387630] [2023-08-30 22:51:57,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 22:51:57,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 22:51:57,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 22:51:58,297 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 22:51:58,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 22:51:58,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944387630] [2023-08-30 22:51:58,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944387630] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 22:51:58,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1171332309] [2023-08-30 22:51:58,298 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-30 22:51:58,298 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 22:51:58,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 22:51:58,301 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 22:51:58,304 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-30 22:51:58,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 22:51:58,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 44 conjunts are in the unsatisfiable core [2023-08-30 22:51:58,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 22:51:58,491 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 22:51:58,492 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 22:51:59,248 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 22:51:59,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1171332309] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 22:51:59,248 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 22:51:59,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40, 40] total 81 [2023-08-30 22:51:59,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125589084] [2023-08-30 22:51:59,249 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 22:51:59,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 83 states [2023-08-30 22:51:59,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 22:51:59,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2023-08-30 22:51:59,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1575, Invalid=5231, Unknown=0, NotChecked=0, Total=6806 [2023-08-30 22:51:59,368 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 124 [2023-08-30 22:51:59,370 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 552 places, 614 transitions, 14996 flow. Second operand has 83 states, 83 states have (on average 54.13253012048193) internal successors, (4493), 83 states have internal predecessors, (4493), 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) [2023-08-30 22:51:59,370 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 22:51:59,370 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 124 [2023-08-30 22:51:59,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 22:52:03,623 INFO L130 PetriNetUnfolder]: 2468/4559 cut-off events. [2023-08-30 22:52:03,623 INFO L131 PetriNetUnfolder]: For 3165113/3165113 co-relation queries the response was YES. [2023-08-30 22:52:03,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106216 conditions, 4559 events. 2468/4559 cut-off events. For 3165113/3165113 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 24127 event pairs, 32 based on Foata normal form. 8/4567 useless extension candidates. Maximal degree in co-relation 106013. Up to 1858 conditions per place. [2023-08-30 22:52:03,681 INFO L137 encePairwiseOnDemand]: 119/124 looper letters, 135 selfloop transitions, 589 changer transitions 158/882 dead transitions. [2023-08-30 22:52:03,682 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 633 places, 882 transitions, 32597 flow [2023-08-30 22:52:03,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2023-08-30 22:52:03,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2023-08-30 22:52:03,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 4728 transitions. [2023-08-30 22:52:03,687 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46498819826907944 [2023-08-30 22:52:03,687 INFO L72 ComplementDD]: Start complementDD. Operand 82 states and 4728 transitions. [2023-08-30 22:52:03,688 INFO L73 IsDeterministic]: Start isDeterministic. Operand 82 states and 4728 transitions. [2023-08-30 22:52:03,689 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 22:52:03,689 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 82 states and 4728 transitions. [2023-08-30 22:52:03,694 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 83 states, 82 states have (on average 57.65853658536585) internal successors, (4728), 82 states have internal predecessors, (4728), 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) [2023-08-30 22:52:03,701 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 83 states, 83 states have (on average 124.0) internal successors, (10292), 83 states have internal predecessors, (10292), 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) [2023-08-30 22:52:03,702 INFO L81 ComplementDD]: Finished complementDD. Result has 83 states, 83 states have (on average 124.0) internal successors, (10292), 83 states have internal predecessors, (10292), 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) [2023-08-30 22:52:03,702 INFO L175 Difference]: Start difference. First operand has 552 places, 614 transitions, 14996 flow. Second operand 82 states and 4728 transitions. [2023-08-30 22:52:03,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 633 places, 882 transitions, 32597 flow [2023-08-30 22:52:09,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 584 places, 882 transitions, 26739 flow, removed 2563 selfloop flow, removed 49 redundant places. [2023-08-30 22:52:09,429 INFO L231 Difference]: Finished difference. Result has 592 places, 634 transitions, 13045 flow [2023-08-30 22:52:09,430 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=11058, PETRI_DIFFERENCE_MINUEND_PLACES=503, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=614, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=569, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=82, PETRI_FLOW=13045, PETRI_PLACES=592, PETRI_TRANSITIONS=634} [2023-08-30 22:52:09,430 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 574 predicate places. [2023-08-30 22:52:09,430 INFO L495 AbstractCegarLoop]: Abstraction has has 592 places, 634 transitions, 13045 flow [2023-08-30 22:52:09,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 83 states, 83 states have (on average 54.13253012048193) internal successors, (4493), 83 states have internal predecessors, (4493), 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) [2023-08-30 22:52:09,431 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 22:52:09,431 INFO L208 CegarLoopForPetriNet]: trace histogram [20, 20, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 22:52:09,436 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-08-30 22:52:09,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-08-30 22:52:09,632 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 22:52:09,632 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 22:52:09,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1412676792, now seen corresponding path program 14 times [2023-08-30 22:52:09,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 22:52:09,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544260098] [2023-08-30 22:52:09,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 22:52:09,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 22:52:09,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 22:52:09,661 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 22:52:09,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 22:52:09,721 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 22:52:09,722 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 22:52:09,723 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-08-30 22:52:09,725 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-08-30 22:52:09,725 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-30 22:52:09,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-30 22:52:09,726 INFO L445 BasicCegarLoop]: Path program histogram: [14, 2, 1] [2023-08-30 22:52:09,730 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 22:52:09,731 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 22:52:09,816 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 10:52:09 BasicIcfg [2023-08-30 22:52:09,817 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 22:52:09,817 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 22:52:09,817 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 22:52:09,817 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 22:52:09,818 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 10:51:16" (3/4) ... [2023-08-30 22:52:09,819 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-08-30 22:52:09,907 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-30 22:52:09,908 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 22:52:09,908 INFO L158 Benchmark]: Toolchain (without parser) took 54637.57ms. Allocated memory was 69.2MB in the beginning and 1.9GB in the end (delta: 1.8GB). Free memory was 45.5MB in the beginning and 584.4MB in the end (delta: -538.9MB). Peak memory consumption was 1.3GB. Max. memory is 16.1GB. [2023-08-30 22:52:09,909 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 52.4MB. Free memory is still 29.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 22:52:09,909 INFO L158 Benchmark]: CACSL2BoogieTranslator took 455.15ms. Allocated memory is still 69.2MB. Free memory was 45.3MB in the beginning and 42.6MB in the end (delta: 2.7MB). Peak memory consumption was 19.2MB. Max. memory is 16.1GB. [2023-08-30 22:52:09,909 INFO L158 Benchmark]: Boogie Procedure Inliner took 59.19ms. Allocated memory is still 69.2MB. Free memory was 42.6MB in the beginning and 40.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 22:52:09,909 INFO L158 Benchmark]: Boogie Preprocessor took 47.70ms. Allocated memory is still 69.2MB. Free memory was 40.5MB in the beginning and 39.2MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 22:52:09,910 INFO L158 Benchmark]: RCFGBuilder took 396.23ms. Allocated memory is still 69.2MB. Free memory was 39.2MB in the beginning and 45.4MB in the end (delta: -6.2MB). Peak memory consumption was 13.1MB. Max. memory is 16.1GB. [2023-08-30 22:52:09,910 INFO L158 Benchmark]: TraceAbstraction took 53582.90ms. Allocated memory was 69.2MB in the beginning and 1.9GB in the end (delta: 1.8GB). Free memory was 44.7MB in the beginning and 598.0MB in the end (delta: -553.3MB). Peak memory consumption was 1.3GB. Max. memory is 16.1GB. [2023-08-30 22:52:09,910 INFO L158 Benchmark]: Witness Printer took 90.69ms. Allocated memory is still 1.9GB. Free memory was 598.0MB in the beginning and 584.4MB in the end (delta: 13.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-08-30 22:52:09,912 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 52.4MB. Free memory is still 29.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 455.15ms. Allocated memory is still 69.2MB. Free memory was 45.3MB in the beginning and 42.6MB in the end (delta: 2.7MB). Peak memory consumption was 19.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 59.19ms. Allocated memory is still 69.2MB. Free memory was 42.6MB in the beginning and 40.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 47.70ms. Allocated memory is still 69.2MB. Free memory was 40.5MB in the beginning and 39.2MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 396.23ms. Allocated memory is still 69.2MB. Free memory was 39.2MB in the beginning and 45.4MB in the end (delta: -6.2MB). Peak memory consumption was 13.1MB. Max. memory is 16.1GB. * TraceAbstraction took 53582.90ms. Allocated memory was 69.2MB in the beginning and 1.9GB in the end (delta: 1.8GB). Free memory was 44.7MB in the beginning and 598.0MB in the end (delta: -553.3MB). Peak memory consumption was 1.3GB. Max. memory is 16.1GB. * Witness Printer took 90.69ms. Allocated memory is still 1.9GB. Free memory was 598.0MB in the beginning and 584.4MB in the end (delta: 13.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.9s, 66 PlacesBefore, 18 PlacesAfterwards, 64 TransitionsBefore, 14 TransitionsAfterwards, 1078 CoEnabledTransitionPairs, 5 FixpointIterations, 18 TrivialSequentialCompositions, 30 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 2 ChoiceCompositions, 58 TotalNumberOfCompositions, 999 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 856, independent: 829, independent conditional: 0, independent unconditional: 829, dependent: 27, dependent conditional: 0, dependent unconditional: 27, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 590, independent: 578, independent conditional: 0, independent unconditional: 578, dependent: 12, dependent conditional: 0, dependent unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 856, independent: 251, independent conditional: 0, independent unconditional: 251, dependent: 15, dependent conditional: 0, dependent unconditional: 15, unknown: 590, unknown conditional: 0, unknown unconditional: 590] , Statistics on independence cache: Total cache size (in pairs): 13, Positive cache size: 10, Positive conditional cache size: 0, Positive unconditional cache size: 10, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: 722]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L694] 0 int i = 3, j = 6; [L712] 0 pthread_t id1, id2; [L713] FCALL, FORK 0 pthread_create(&id1, ((void *)0), t1, ((void *)0)) VAL [\old(argc)=51, arg={0:0}, argc=51, argv={49:50}, argv={49:50}, i=3, id1={5:0}, id2={3:0}, j=6, pthread_create(&id1, ((void *)0), t1, ((void *)0))=6] [L696] 1 int k = 0; VAL [arg={0:0}, arg={0:0}, i=3, j=6, k=0] [L714] FCALL, FORK 0 pthread_create(&id2, ((void *)0), t2, ((void *)0)) VAL [\old(argc)=51, arg={0:0}, arg={0:0}, arg={0:0}, argc=51, argv={49:50}, argv={49:50}, i=3, id1={5:0}, id2={3:0}, j=6, k=0, pthread_create(&id2, ((void *)0), t2, ((void *)0))=7] [L704] 2 int k = 0; VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=3, j=6, k=0, k=0] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=6, k=0, k=1] [L716] 0 int condI = i >= (2*20 +6); VAL [\old(argc)=51, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, argc=51, argv={49:50}, argv={49:50}, condI=0, i=7, id1={5:0}, id2={3:0}, j=6, k=0, k=1] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=8, k=1, k=1] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=8, k=1, k=2] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=10, k=2, k=2] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=10, k=2, k=3] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=12, k=3, k=3] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=12, k=3, k=4] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=14, k=4, k=4] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=14, k=4, k=5] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=5, k=5] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=17, j=16, k=5, k=6] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=17, j=18, k=6, k=6] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=19, j=18, k=6, k=7] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=19, j=20, k=7, k=7] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=21, j=20, k=7, k=8] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=21, j=22, k=8, k=8] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=23, j=22, k=8, k=9] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=23, j=24, k=9, k=9] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=25, j=24, k=10, k=9] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=25, j=26, k=10, k=10] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=27, j=26, k=10, k=11] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=27, j=28, k=11, k=11] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=29, j=28, k=11, k=12] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=29, j=30, k=12, k=12] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=31, j=30, k=12, k=13] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=31, j=32, k=13, k=13] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=33, j=32, k=13, k=14] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=33, j=34, k=14, k=14] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=35, j=34, k=14, k=15] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=35, j=36, k=15, k=15] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=37, j=36, k=15, k=16] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=37, j=38, k=16, k=16] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=39, j=38, k=16, k=17] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=39, j=40, k=17, k=17] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=41, j=40, k=17, k=18] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=41, j=42, k=18, k=18] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=43, j=42, k=18, k=19] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=43, j=44, k=19, k=19] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=45, j=44, k=19, k=20] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=45, j=46, k=20, k=20] [L719] 0 int condJ = j >= (2*20 +6); [L721] COND TRUE 0 condI || condJ [L722] 0 reach_error() VAL [\old(argc)=51, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, argc=51, argv={49:50}, argv={49:50}, condI=0, condJ=1, i=45, id1={5:0}, id2={3:0}, j=46, k=20, k=20] - UnprovableResult [Line: 713]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 714]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 84 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 53.4s, OverallIterations: 17, TraceHistogramMax: 20, PathProgramHistogramMax: 14, EmptinessCheckTime: 0.0s, AutomataDifference: 38.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 8236 SdHoareTripleChecker+Valid, 3.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 8145 mSDsluCounter, 1354 SdHoareTripleChecker+Invalid, 3.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1343 mSDsCounter, 775 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6310 IncrementalHoareTripleChecker+Invalid, 7085 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 775 mSolverCounterUnsat, 11 mSDtfsCounter, 6310 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1217 GetRequests, 308 SyntacticMatches, 0 SemanticMatches, 909 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30376 ImplicationChecksByTransitivity, 13.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14996occurred in iteration=15, InterpolantAutomatonStates: 567, 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, 9.2s InterpolantComputationTime, 620 NumberOfCodeBlocks, 620 NumberOfCodeBlocksAsserted, 74 NumberOfCheckSat, 799 ConstructedInterpolants, 0 QuantifiedInterpolants, 3351 SizeOfPredicates, 173 NumberOfNonLiveVariables, 2095 ConjunctsInSsa, 239 ConjunctsInUnsatCore, 38 InterpolantComputations, 5 PerfectInterpolantSequences, 12/2967 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 RESULT: Ultimate proved your program to be incorrect! [2023-08-30 22:52:09,943 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 Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE