./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/loop-tiling-eq.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/weaver/loop-tiling-eq.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2bf204635285748ea2bd88f763410b9afff54eeccde3aa0a970ff723633af9c2 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 19:23:11,405 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 19:23:11,407 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 19:23:11,447 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 19:23:11,452 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 19:23:11,455 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 19:23:11,456 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 19:23:11,459 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 19:23:11,461 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 19:23:11,465 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 19:23:11,466 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 19:23:11,468 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 19:23:11,470 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 19:23:11,472 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 19:23:11,473 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 19:23:11,476 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 19:23:11,476 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 19:23:11,478 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 19:23:11,480 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 19:23:11,482 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 19:23:11,490 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 19:23:11,491 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 19:23:11,492 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 19:23:11,493 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 19:23:11,499 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 19:23:11,501 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 19:23:11,501 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 19:23:11,502 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 19:23:11,503 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 19:23:11,504 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 19:23:11,509 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 19:23:11,509 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 19:23:11,510 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 19:23:11,511 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 19:23:11,512 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 19:23:11,513 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 19:23:11,514 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 19:23:11,514 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 19:23:11,514 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 19:23:11,515 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 19:23:11,515 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 19:23:11,517 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-30 19:23:11,548 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 19:23:11,548 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 19:23:11,549 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 19:23:11,550 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 19:23:11,550 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 19:23:11,551 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 19:23:11,551 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 19:23:11,551 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 19:23:11,551 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 19:23:11,552 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 19:23:11,552 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 19:23:11,553 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 19:23:11,553 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 19:23:11,553 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 19:23:11,553 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 19:23:11,553 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 19:23:11,554 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 19:23:11,554 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 19:23:11,554 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 19:23:11,554 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 19:23:11,554 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 19:23:11,554 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 19:23:11,555 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 19:23:11,555 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 19:23:11,555 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 19:23:11,555 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 19:23:11,555 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 19:23:11,556 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 19:23:11,556 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 19:23:11,556 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 19:23:11,556 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 19:23:11,556 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 19:23:11,557 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 19:23:11,557 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 19:23:11,557 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 19:23:11,557 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2bf204635285748ea2bd88f763410b9afff54eeccde3aa0a970ff723633af9c2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 19:23:11,834 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 19:23:11,851 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 19:23:11,853 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 19:23:11,854 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 19:23:11,854 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 19:23:11,855 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/loop-tiling-eq.wvr.c [2023-08-30 19:23:12,906 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 19:23:13,102 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 19:23:13,102 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/loop-tiling-eq.wvr.c [2023-08-30 19:23:13,108 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/286968700/94d0f0c608bc45ff99e67e8dfd9dc9a4/FLAG64fd50c2b [2023-08-30 19:23:13,118 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/286968700/94d0f0c608bc45ff99e67e8dfd9dc9a4 [2023-08-30 19:23:13,120 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 19:23:13,122 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 19:23:13,123 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 19:23:13,123 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 19:23:13,125 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 19:23:13,126 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 07:23:13" (1/1) ... [2023-08-30 19:23:13,127 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@466f8e6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:23:13, skipping insertion in model container [2023-08-30 19:23:13,127 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 07:23:13" (1/1) ... [2023-08-30 19:23:13,132 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 19:23:13,149 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 19:23:13,296 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/loop-tiling-eq.wvr.c[2618,2631] [2023-08-30 19:23:13,303 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 19:23:13,311 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 19:23:13,341 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/loop-tiling-eq.wvr.c[2618,2631] [2023-08-30 19:23:13,359 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 19:23:13,371 INFO L208 MainTranslator]: Completed translation [2023-08-30 19:23:13,373 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:23:13 WrapperNode [2023-08-30 19:23:13,373 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 19:23:13,375 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 19:23:13,375 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 19:23:13,375 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 19:23:13,381 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:23:13" (1/1) ... [2023-08-30 19:23:13,401 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:23:13" (1/1) ... [2023-08-30 19:23:13,438 INFO L138 Inliner]: procedures = 25, calls = 41, calls flagged for inlining = 13, calls inlined = 17, statements flattened = 193 [2023-08-30 19:23:13,439 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 19:23:13,440 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 19:23:13,440 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 19:23:13,440 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 19:23:13,448 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:23:13" (1/1) ... [2023-08-30 19:23:13,449 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:23:13" (1/1) ... [2023-08-30 19:23:13,462 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:23:13" (1/1) ... [2023-08-30 19:23:13,462 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:23:13" (1/1) ... [2023-08-30 19:23:13,473 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:23:13" (1/1) ... [2023-08-30 19:23:13,486 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:23:13" (1/1) ... [2023-08-30 19:23:13,489 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:23:13" (1/1) ... [2023-08-30 19:23:13,495 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:23:13" (1/1) ... [2023-08-30 19:23:13,498 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 19:23:13,500 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 19:23:13,501 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 19:23:13,501 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 19:23:13,503 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:23:13" (1/1) ... [2023-08-30 19:23:13,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 19:23:13,519 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 19:23:13,534 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 19:23:13,569 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 19:23:13,583 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 19:23:13,583 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-30 19:23:13,584 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 19:23:13,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 19:23:13,584 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 19:23:13,584 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-08-30 19:23:13,584 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 19:23:13,584 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 19:23:13,584 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 19:23:13,585 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 19:23:13,585 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 19:23:13,585 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 19:23:13,585 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 19:23:13,585 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 19:23:13,585 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 19:23:13,587 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 19:23:13,753 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 19:23:13,755 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 19:23:14,164 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 19:23:14,173 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 19:23:14,173 INFO L302 CfgBuilder]: Removed 7 assume(true) statements. [2023-08-30 19:23:14,175 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 07:23:14 BoogieIcfgContainer [2023-08-30 19:23:14,176 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 19:23:14,177 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 19:23:14,177 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 19:23:14,183 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 19:23:14,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 07:23:13" (1/3) ... [2023-08-30 19:23:14,184 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@733d59ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 07:23:14, skipping insertion in model container [2023-08-30 19:23:14,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:23:13" (2/3) ... [2023-08-30 19:23:14,185 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@733d59ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 07:23:14, skipping insertion in model container [2023-08-30 19:23:14,185 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 07:23:14" (3/3) ... [2023-08-30 19:23:14,185 INFO L112 eAbstractionObserver]: Analyzing ICFG loop-tiling-eq.wvr.c [2023-08-30 19:23:14,191 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 19:23:14,200 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 19:23:14,204 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-30 19:23:14,205 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 19:23:14,327 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 19:23:14,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 238 places, 257 transitions, 530 flow [2023-08-30 19:23:14,505 INFO L130 PetriNetUnfolder]: 26/255 cut-off events. [2023-08-30 19:23:14,506 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 19:23:14,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 264 conditions, 255 events. 26/255 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 273 event pairs, 0 based on Foata normal form. 0/228 useless extension candidates. Maximal degree in co-relation 191. Up to 2 conditions per place. [2023-08-30 19:23:14,511 INFO L82 GeneralOperation]: Start removeDead. Operand has 238 places, 257 transitions, 530 flow [2023-08-30 19:23:14,521 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 228 places, 247 transitions, 506 flow [2023-08-30 19:23:14,525 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 19:23:14,544 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 228 places, 247 transitions, 506 flow [2023-08-30 19:23:14,548 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 228 places, 247 transitions, 506 flow [2023-08-30 19:23:14,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 228 places, 247 transitions, 506 flow [2023-08-30 19:23:14,605 INFO L130 PetriNetUnfolder]: 26/247 cut-off events. [2023-08-30 19:23:14,605 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 19:23:14,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 256 conditions, 247 events. 26/247 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 273 event pairs, 0 based on Foata normal form. 0/221 useless extension candidates. Maximal degree in co-relation 191. Up to 2 conditions per place. [2023-08-30 19:23:14,609 INFO L119 LiptonReduction]: Number of co-enabled transitions 972 [2023-08-30 19:23:28,902 INFO L134 LiptonReduction]: Checked pairs total: 1519 [2023-08-30 19:23:28,903 INFO L136 LiptonReduction]: Total number of compositions: 276 [2023-08-30 19:23:28,913 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 19:23:28,919 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;@176f218f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 19:23:28,919 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-30 19:23:28,928 INFO L130 PetriNetUnfolder]: 7/27 cut-off events. [2023-08-30 19:23:28,928 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 19:23:28,928 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 19:23:28,929 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 19:23:28,929 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 19:23:28,933 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 19:23:28,934 INFO L85 PathProgramCache]: Analyzing trace with hash -2101152341, now seen corresponding path program 1 times [2023-08-30 19:23:28,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 19:23:28,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547990351] [2023-08-30 19:23:28,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:23:28,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 19:23:29,036 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 19:23:29,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2046947117] [2023-08-30 19:23:29,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:23:29,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 19:23:29,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 19:23:29,049 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 19:23:29,071 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 19:23:29,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 19:23:29,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 19:23:29,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 19:23:29,249 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 19:23:29,249 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 19:23:29,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 19:23:29,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547990351] [2023-08-30 19:23:29,250 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 19:23:29,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2046947117] [2023-08-30 19:23:29,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2046947117] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 19:23:29,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 19:23:29,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 19:23:29,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539246426] [2023-08-30 19:23:29,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 19:23:29,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 19:23:29,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 19:23:29,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 19:23:29,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 19:23:29,322 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 226 out of 533 [2023-08-30 19:23:29,326 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 28 transitions, 68 flow. Second operand has 4 states, 4 states have (on average 229.5) internal successors, (918), 4 states have internal predecessors, (918), 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 19:23:29,326 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 19:23:29,326 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 226 of 533 [2023-08-30 19:23:29,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 19:23:29,496 INFO L130 PetriNetUnfolder]: 205/348 cut-off events. [2023-08-30 19:23:29,497 INFO L131 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2023-08-30 19:23:29,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 708 conditions, 348 events. 205/348 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1363 event pairs, 100 based on Foata normal form. 1/240 useless extension candidates. Maximal degree in co-relation 278. Up to 166 conditions per place. [2023-08-30 19:23:29,500 INFO L137 encePairwiseOnDemand]: 529/533 looper letters, 26 selfloop transitions, 2 changer transitions 16/47 dead transitions. [2023-08-30 19:23:29,501 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 47 transitions, 206 flow [2023-08-30 19:23:29,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 19:23:29,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 19:23:29,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 949 transitions. [2023-08-30 19:23:29,521 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4451219512195122 [2023-08-30 19:23:29,522 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 949 transitions. [2023-08-30 19:23:29,522 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 949 transitions. [2023-08-30 19:23:29,525 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 19:23:29,528 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 949 transitions. [2023-08-30 19:23:29,534 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 237.25) internal successors, (949), 4 states have internal predecessors, (949), 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 19:23:29,542 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 533.0) internal successors, (2665), 5 states have internal predecessors, (2665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:23:29,543 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 533.0) internal successors, (2665), 5 states have internal predecessors, (2665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:23:29,545 INFO L175 Difference]: Start difference. First operand has 28 places, 28 transitions, 68 flow. Second operand 4 states and 949 transitions. [2023-08-30 19:23:29,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 47 transitions, 206 flow [2023-08-30 19:23:29,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 47 transitions, 190 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-30 19:23:29,550 INFO L231 Difference]: Finished difference. Result has 29 places, 29 transitions, 74 flow [2023-08-30 19:23:29,551 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=533, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=74, PETRI_PLACES=29, PETRI_TRANSITIONS=29} [2023-08-30 19:23:29,555 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 1 predicate places. [2023-08-30 19:23:29,556 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 29 transitions, 74 flow [2023-08-30 19:23:29,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 229.5) internal successors, (918), 4 states have internal predecessors, (918), 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 19:23:29,557 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 19:23:29,558 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 19:23:29,572 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 19:23:29,768 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,SelfDestructingSolverStorable0 [2023-08-30 19:23:29,769 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 19:23:29,769 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 19:23:29,770 INFO L85 PathProgramCache]: Analyzing trace with hash 1311819515, now seen corresponding path program 1 times [2023-08-30 19:23:29,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 19:23:29,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186140057] [2023-08-30 19:23:29,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:23:29,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 19:23:29,830 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 19:23:29,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [148919057] [2023-08-30 19:23:29,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:23:29,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 19:23:29,830 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 19:23:29,845 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 19:23:29,855 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 19:23:29,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 19:23:29,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 19:23:29,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 19:23:29,997 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 19:23:29,997 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 19:23:30,030 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 19:23:30,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 19:23:30,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186140057] [2023-08-30 19:23:30,031 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 19:23:30,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [148919057] [2023-08-30 19:23:30,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [148919057] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 19:23:30,033 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 19:23:30,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2023-08-30 19:23:30,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746715853] [2023-08-30 19:23:30,033 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 19:23:30,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 19:23:30,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 19:23:30,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 19:23:30,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-30 19:23:30,120 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 222 out of 533 [2023-08-30 19:23:30,122 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 29 transitions, 74 flow. Second operand has 6 states, 6 states have (on average 225.16666666666666) internal successors, (1351), 6 states have internal predecessors, (1351), 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 19:23:30,122 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 19:23:30,123 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 222 of 533 [2023-08-30 19:23:30,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 19:23:30,244 INFO L130 PetriNetUnfolder]: 162/279 cut-off events. [2023-08-30 19:23:30,244 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-08-30 19:23:30,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 553 conditions, 279 events. 162/279 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 937 event pairs, 32 based on Foata normal form. 0/212 useless extension candidates. Maximal degree in co-relation 545. Up to 103 conditions per place. [2023-08-30 19:23:30,246 INFO L137 encePairwiseOnDemand]: 527/533 looper letters, 38 selfloop transitions, 6 changer transitions 0/46 dead transitions. [2023-08-30 19:23:30,246 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 46 transitions, 198 flow [2023-08-30 19:23:30,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 19:23:30,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 19:23:30,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1376 transitions. [2023-08-30 19:23:30,252 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43026891807379614 [2023-08-30 19:23:30,253 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1376 transitions. [2023-08-30 19:23:30,253 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1376 transitions. [2023-08-30 19:23:30,253 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 19:23:30,254 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1376 transitions. [2023-08-30 19:23:30,257 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 229.33333333333334) internal successors, (1376), 6 states have internal predecessors, (1376), 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 19:23:30,261 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 533.0) internal successors, (3731), 7 states have internal predecessors, (3731), 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 19:23:30,264 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 533.0) internal successors, (3731), 7 states have internal predecessors, (3731), 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 19:23:30,264 INFO L175 Difference]: Start difference. First operand has 29 places, 29 transitions, 74 flow. Second operand 6 states and 1376 transitions. [2023-08-30 19:23:30,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 46 transitions, 198 flow [2023-08-30 19:23:30,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 46 transitions, 194 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-30 19:23:30,267 INFO L231 Difference]: Finished difference. Result has 34 places, 32 transitions, 103 flow [2023-08-30 19:23:30,267 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=533, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=103, PETRI_PLACES=34, PETRI_TRANSITIONS=32} [2023-08-30 19:23:30,268 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 6 predicate places. [2023-08-30 19:23:30,268 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 32 transitions, 103 flow [2023-08-30 19:23:30,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 225.16666666666666) internal successors, (1351), 6 states have internal predecessors, (1351), 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 19:23:30,269 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 19:23:30,269 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 19:23:30,278 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 19:23:30,475 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,SelfDestructingSolverStorable1 [2023-08-30 19:23:30,476 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 19:23:30,476 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 19:23:30,476 INFO L85 PathProgramCache]: Analyzing trace with hash -1014923716, now seen corresponding path program 1 times [2023-08-30 19:23:30,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 19:23:30,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387998884] [2023-08-30 19:23:30,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:23:30,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 19:23:30,492 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 19:23:30,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1689017102] [2023-08-30 19:23:30,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:23:30,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 19:23:30,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 19:23:30,494 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 19:23:30,497 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 19:23:30,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 19:23:30,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 19:23:30,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 19:23:30,642 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 19:23:30,642 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 19:23:30,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 19:23:30,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387998884] [2023-08-30 19:23:30,645 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 19:23:30,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1689017102] [2023-08-30 19:23:30,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1689017102] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 19:23:30,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 19:23:30,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 19:23:30,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751123241] [2023-08-30 19:23:30,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 19:23:30,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 19:23:30,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 19:23:30,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 19:23:30,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 19:23:30,736 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 533 [2023-08-30 19:23:30,737 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 32 transitions, 103 flow. Second operand has 4 states, 4 states have (on average 223.5) internal successors, (894), 4 states have internal predecessors, (894), 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 19:23:30,738 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 19:23:30,738 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 533 [2023-08-30 19:23:30,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 19:23:30,884 INFO L130 PetriNetUnfolder]: 432/745 cut-off events. [2023-08-30 19:23:30,884 INFO L131 PetriNetUnfolder]: For 129/165 co-relation queries the response was YES. [2023-08-30 19:23:30,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1693 conditions, 745 events. 432/745 cut-off events. For 129/165 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3450 event pairs, 240 based on Foata normal form. 38/684 useless extension candidates. Maximal degree in co-relation 1098. Up to 233 conditions per place. [2023-08-30 19:23:30,888 INFO L137 encePairwiseOnDemand]: 529/533 looper letters, 27 selfloop transitions, 3 changer transitions 44/77 dead transitions. [2023-08-30 19:23:30,888 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 77 transitions, 393 flow [2023-08-30 19:23:30,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 19:23:30,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 19:23:30,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1162 transitions. [2023-08-30 19:23:30,891 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43602251407129455 [2023-08-30 19:23:30,891 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1162 transitions. [2023-08-30 19:23:30,892 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1162 transitions. [2023-08-30 19:23:30,892 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 19:23:30,892 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1162 transitions. [2023-08-30 19:23:30,900 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 232.4) internal successors, (1162), 5 states have internal predecessors, (1162), 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 19:23:30,904 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 533.0) internal successors, (3198), 6 states have internal predecessors, (3198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:23:30,905 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 533.0) internal successors, (3198), 6 states have internal predecessors, (3198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:23:30,905 INFO L175 Difference]: Start difference. First operand has 34 places, 32 transitions, 103 flow. Second operand 5 states and 1162 transitions. [2023-08-30 19:23:30,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 77 transitions, 393 flow [2023-08-30 19:23:30,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 77 transitions, 392 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 19:23:30,911 INFO L231 Difference]: Finished difference. Result has 40 places, 33 transitions, 125 flow [2023-08-30 19:23:30,911 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=533, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=125, PETRI_PLACES=40, PETRI_TRANSITIONS=33} [2023-08-30 19:23:30,912 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 12 predicate places. [2023-08-30 19:23:30,914 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 33 transitions, 125 flow [2023-08-30 19:23:30,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 223.5) internal successors, (894), 4 states have internal predecessors, (894), 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 19:23:30,915 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 19:23:30,915 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 19:23:30,928 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 19:23:31,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 19:23:31,121 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 19:23:31,122 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 19:23:31,122 INFO L85 PathProgramCache]: Analyzing trace with hash 1495140604, now seen corresponding path program 1 times [2023-08-30 19:23:31,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 19:23:31,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391481376] [2023-08-30 19:23:31,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:23:31,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 19:23:31,134 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 19:23:31,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1495139569] [2023-08-30 19:23:31,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:23:31,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 19:23:31,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 19:23:31,136 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 19:23:31,138 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 19:23:31,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 19:23:31,239 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 19:23:31,241 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 19:23:31,311 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 19:23:31,312 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 19:23:31,356 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 19:23:31,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 19:23:31,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391481376] [2023-08-30 19:23:31,356 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 19:23:31,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1495139569] [2023-08-30 19:23:31,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1495139569] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-30 19:23:31,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 19:23:31,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2023-08-30 19:23:31,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320542166] [2023-08-30 19:23:31,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 19:23:31,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 19:23:31,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 19:23:31,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 19:23:31,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-08-30 19:23:31,476 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 533 [2023-08-30 19:23:31,477 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 33 transitions, 125 flow. Second operand has 5 states, 5 states have (on average 212.8) internal successors, (1064), 5 states have internal predecessors, (1064), 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 19:23:31,477 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 19:23:31,477 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 533 [2023-08-30 19:23:31,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 19:23:31,983 INFO L130 PetriNetUnfolder]: 180/316 cut-off events. [2023-08-30 19:23:31,983 INFO L131 PetriNetUnfolder]: For 58/66 co-relation queries the response was YES. [2023-08-30 19:23:31,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 728 conditions, 316 events. 180/316 cut-off events. For 58/66 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 996 event pairs, 56 based on Foata normal form. 28/299 useless extension candidates. Maximal degree in co-relation 714. Up to 163 conditions per place. [2023-08-30 19:23:31,985 INFO L137 encePairwiseOnDemand]: 524/533 looper letters, 34 selfloop transitions, 9 changer transitions 0/46 dead transitions. [2023-08-30 19:23:31,985 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 46 transitions, 252 flow [2023-08-30 19:23:31,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 19:23:31,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 19:23:31,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1084 transitions. [2023-08-30 19:23:31,988 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40675422138836775 [2023-08-30 19:23:31,988 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1084 transitions. [2023-08-30 19:23:31,988 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1084 transitions. [2023-08-30 19:23:31,989 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 19:23:31,989 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1084 transitions. [2023-08-30 19:23:31,991 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 216.8) internal successors, (1084), 5 states have internal predecessors, (1084), 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 19:23:31,995 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 533.0) internal successors, (3198), 6 states have internal predecessors, (3198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:23:31,996 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 533.0) internal successors, (3198), 6 states have internal predecessors, (3198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:23:31,996 INFO L175 Difference]: Start difference. First operand has 40 places, 33 transitions, 125 flow. Second operand 5 states and 1084 transitions. [2023-08-30 19:23:31,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 46 transitions, 252 flow [2023-08-30 19:23:31,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 46 transitions, 237 flow, removed 5 selfloop flow, removed 3 redundant places. [2023-08-30 19:23:31,998 INFO L231 Difference]: Finished difference. Result has 43 places, 38 transitions, 178 flow [2023-08-30 19:23:31,999 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=533, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=178, PETRI_PLACES=43, PETRI_TRANSITIONS=38} [2023-08-30 19:23:31,999 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 15 predicate places. [2023-08-30 19:23:31,999 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 38 transitions, 178 flow [2023-08-30 19:23:32,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 212.8) internal successors, (1064), 5 states have internal predecessors, (1064), 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 19:23:32,000 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 19:23:32,000 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 19:23:32,008 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 19:23:32,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 19:23:32,206 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 19:23:32,207 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 19:23:32,207 INFO L85 PathProgramCache]: Analyzing trace with hash 894191198, now seen corresponding path program 1 times [2023-08-30 19:23:32,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 19:23:32,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997373564] [2023-08-30 19:23:32,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:23:32,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 19:23:32,221 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 19:23:32,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [172553424] [2023-08-30 19:23:32,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:23:32,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 19:23:32,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 19:23:32,223 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 19:23:32,235 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 19:23:32,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 19:23:32,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-30 19:23:32,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 19:23:32,551 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 19:23:32,551 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 19:23:32,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 19:23:32,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997373564] [2023-08-30 19:23:32,552 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 19:23:32,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [172553424] [2023-08-30 19:23:32,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [172553424] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 19:23:32,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 19:23:32,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 19:23:32,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611104581] [2023-08-30 19:23:32,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 19:23:32,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 19:23:32,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 19:23:32,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 19:23:32,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-30 19:23:33,299 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 211 out of 533 [2023-08-30 19:23:33,300 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 38 transitions, 178 flow. Second operand has 6 states, 6 states have (on average 214.5) internal successors, (1287), 6 states have internal predecessors, (1287), 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 19:23:33,300 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 19:23:33,300 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 211 of 533 [2023-08-30 19:23:33,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 19:23:34,275 INFO L130 PetriNetUnfolder]: 180/316 cut-off events. [2023-08-30 19:23:34,276 INFO L131 PetriNetUnfolder]: For 179/187 co-relation queries the response was YES. [2023-08-30 19:23:34,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 901 conditions, 316 events. 180/316 cut-off events. For 179/187 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 980 event pairs, 104 based on Foata normal form. 9/280 useless extension candidates. Maximal degree in co-relation 839. Up to 287 conditions per place. [2023-08-30 19:23:34,278 INFO L137 encePairwiseOnDemand]: 526/533 looper letters, 30 selfloop transitions, 2 changer transitions 7/42 dead transitions. [2023-08-30 19:23:34,278 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 42 transitions, 280 flow [2023-08-30 19:23:34,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 19:23:34,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 19:23:34,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1722 transitions. [2023-08-30 19:23:34,290 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40384615384615385 [2023-08-30 19:23:34,290 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1722 transitions. [2023-08-30 19:23:34,290 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1722 transitions. [2023-08-30 19:23:34,291 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 19:23:34,291 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1722 transitions. [2023-08-30 19:23:34,294 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 215.25) internal successors, (1722), 8 states have internal predecessors, (1722), 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 19:23:34,299 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 533.0) internal successors, (4797), 9 states have internal predecessors, (4797), 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 19:23:34,300 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 533.0) internal successors, (4797), 9 states have internal predecessors, (4797), 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 19:23:34,300 INFO L175 Difference]: Start difference. First operand has 43 places, 38 transitions, 178 flow. Second operand 8 states and 1722 transitions. [2023-08-30 19:23:34,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 42 transitions, 280 flow [2023-08-30 19:23:34,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 42 transitions, 276 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 19:23:34,305 INFO L231 Difference]: Finished difference. Result has 52 places, 35 transitions, 162 flow [2023-08-30 19:23:34,305 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=533, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=162, PETRI_PLACES=52, PETRI_TRANSITIONS=35} [2023-08-30 19:23:34,307 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 24 predicate places. [2023-08-30 19:23:34,307 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 35 transitions, 162 flow [2023-08-30 19:23:34,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 214.5) internal successors, (1287), 6 states have internal predecessors, (1287), 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 19:23:34,308 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 19:23:34,308 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 19:23:34,319 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 19:23:34,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 19:23:34,515 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 19:23:34,516 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 19:23:34,516 INFO L85 PathProgramCache]: Analyzing trace with hash -1474746605, now seen corresponding path program 1 times [2023-08-30 19:23:34,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 19:23:34,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357527339] [2023-08-30 19:23:34,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:23:34,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 19:23:34,532 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 19:23:34,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [571653552] [2023-08-30 19:23:34,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:23:34,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 19:23:34,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 19:23:34,534 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 19:23:34,554 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 19:23:34,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 19:23:34,657 INFO L263 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 19:23:34,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 19:23:34,697 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-30 19:23:34,697 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 19:23:34,724 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-30 19:23:34,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 19:23:34,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357527339] [2023-08-30 19:23:34,724 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 19:23:34,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [571653552] [2023-08-30 19:23:34,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [571653552] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-30 19:23:34,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 19:23:34,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-08-30 19:23:34,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980800986] [2023-08-30 19:23:34,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 19:23:34,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 19:23:34,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 19:23:34,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 19:23:34,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-30 19:23:34,825 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 533 [2023-08-30 19:23:34,826 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 35 transitions, 162 flow. Second operand has 5 states, 5 states have (on average 217.4) internal successors, (1087), 5 states have internal predecessors, (1087), 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 19:23:34,826 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 19:23:34,826 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 533 [2023-08-30 19:23:34,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 19:23:34,906 INFO L130 PetriNetUnfolder]: 178/310 cut-off events. [2023-08-30 19:23:34,906 INFO L131 PetriNetUnfolder]: For 137/145 co-relation queries the response was YES. [2023-08-30 19:23:34,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 843 conditions, 310 events. 178/310 cut-off events. For 137/145 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 972 event pairs, 104 based on Foata normal form. 9/274 useless extension candidates. Maximal degree in co-relation 818. Up to 286 conditions per place. [2023-08-30 19:23:34,908 INFO L137 encePairwiseOnDemand]: 528/533 looper letters, 29 selfloop transitions, 4 changer transitions 0/36 dead transitions. [2023-08-30 19:23:34,908 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 36 transitions, 232 flow [2023-08-30 19:23:34,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 19:23:34,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 19:23:34,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1093 transitions. [2023-08-30 19:23:34,913 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4101313320825516 [2023-08-30 19:23:34,913 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1093 transitions. [2023-08-30 19:23:34,913 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1093 transitions. [2023-08-30 19:23:34,913 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 19:23:34,914 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1093 transitions. [2023-08-30 19:23:34,916 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 218.6) internal successors, (1093), 5 states have internal predecessors, (1093), 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 19:23:34,919 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 533.0) internal successors, (3198), 6 states have internal predecessors, (3198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:23:34,919 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 533.0) internal successors, (3198), 6 states have internal predecessors, (3198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:23:34,920 INFO L175 Difference]: Start difference. First operand has 52 places, 35 transitions, 162 flow. Second operand 5 states and 1093 transitions. [2023-08-30 19:23:34,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 36 transitions, 232 flow [2023-08-30 19:23:34,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 36 transitions, 212 flow, removed 7 selfloop flow, removed 7 redundant places. [2023-08-30 19:23:34,922 INFO L231 Difference]: Finished difference. Result has 45 places, 36 transitions, 160 flow [2023-08-30 19:23:34,922 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=533, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=160, PETRI_PLACES=45, PETRI_TRANSITIONS=36} [2023-08-30 19:23:34,924 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 17 predicate places. [2023-08-30 19:23:34,927 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 36 transitions, 160 flow [2023-08-30 19:23:34,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 217.4) internal successors, (1087), 5 states have internal predecessors, (1087), 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 19:23:34,927 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 19:23:34,927 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 19:23:34,937 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 19:23:35,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 19:23:35,135 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 19:23:35,135 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 19:23:35,135 INFO L85 PathProgramCache]: Analyzing trace with hash 527810065, now seen corresponding path program 1 times [2023-08-30 19:23:35,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 19:23:35,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110598649] [2023-08-30 19:23:35,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:23:35,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 19:23:35,159 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 19:23:35,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2095281937] [2023-08-30 19:23:35,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:23:35,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 19:23:35,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 19:23:35,160 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 19:23:35,184 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 19:23:35,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 19:23:35,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 19:23:35,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 19:23:35,335 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-30 19:23:35,335 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 19:23:35,363 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-30 19:23:35,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 19:23:35,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110598649] [2023-08-30 19:23:35,364 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 19:23:35,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2095281937] [2023-08-30 19:23:35,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2095281937] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-30 19:23:35,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 19:23:35,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-08-30 19:23:35,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134680528] [2023-08-30 19:23:35,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 19:23:35,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 19:23:35,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 19:23:35,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 19:23:35,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-08-30 19:23:35,429 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 533 [2023-08-30 19:23:35,430 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 36 transitions, 160 flow. Second operand has 5 states, 5 states have (on average 213.8) internal successors, (1069), 5 states have internal predecessors, (1069), 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 19:23:35,431 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 19:23:35,431 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 533 [2023-08-30 19:23:35,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 19:23:35,522 INFO L130 PetriNetUnfolder]: 193/340 cut-off events. [2023-08-30 19:23:35,522 INFO L131 PetriNetUnfolder]: For 262/276 co-relation queries the response was YES. [2023-08-30 19:23:35,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 939 conditions, 340 events. 193/340 cut-off events. For 262/276 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1080 event pairs, 78 based on Foata normal form. 14/332 useless extension candidates. Maximal degree in co-relation 912. Up to 197 conditions per place. [2023-08-30 19:23:35,524 INFO L137 encePairwiseOnDemand]: 527/533 looper letters, 41 selfloop transitions, 5 changer transitions 0/48 dead transitions. [2023-08-30 19:23:35,525 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 48 transitions, 309 flow [2023-08-30 19:23:35,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 19:23:35,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 19:23:35,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1082 transitions. [2023-08-30 19:23:35,528 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40600375234521574 [2023-08-30 19:23:35,528 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1082 transitions. [2023-08-30 19:23:35,528 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1082 transitions. [2023-08-30 19:23:35,529 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 19:23:35,529 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1082 transitions. [2023-08-30 19:23:35,531 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 216.4) internal successors, (1082), 5 states have internal predecessors, (1082), 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 19:23:35,534 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 533.0) internal successors, (3198), 6 states have internal predecessors, (3198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:23:35,534 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 533.0) internal successors, (3198), 6 states have internal predecessors, (3198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:23:35,535 INFO L175 Difference]: Start difference. First operand has 45 places, 36 transitions, 160 flow. Second operand 5 states and 1082 transitions. [2023-08-30 19:23:35,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 48 transitions, 309 flow [2023-08-30 19:23:35,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 48 transitions, 304 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-30 19:23:35,537 INFO L231 Difference]: Finished difference. Result has 49 places, 37 transitions, 178 flow [2023-08-30 19:23:35,537 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=533, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=178, PETRI_PLACES=49, PETRI_TRANSITIONS=37} [2023-08-30 19:23:35,538 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 21 predicate places. [2023-08-30 19:23:35,538 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 37 transitions, 178 flow [2023-08-30 19:23:35,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 213.8) internal successors, (1069), 5 states have internal predecessors, (1069), 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 19:23:35,539 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 19:23:35,539 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 19:23:35,549 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 19:23:35,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 19:23:35,744 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 19:23:35,745 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 19:23:35,745 INFO L85 PathProgramCache]: Analyzing trace with hash -1892160258, now seen corresponding path program 1 times [2023-08-30 19:23:35,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 19:23:35,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203937758] [2023-08-30 19:23:35,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:23:35,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 19:23:35,766 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 19:23:35,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2105139141] [2023-08-30 19:23:35,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:23:35,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 19:23:35,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 19:23:35,768 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 19:23:35,770 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 19:23:36,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 19:23:36,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 82 conjunts are in the unsatisfiable core [2023-08-30 19:23:36,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 19:23:36,092 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2023-08-30 19:23:36,093 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 27 [2023-08-30 19:23:36,135 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-08-30 19:23:36,136 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-08-30 19:23:36,192 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-08-30 19:23:36,192 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-08-30 19:23:36,251 INFO L321 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2023-08-30 19:23:36,252 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 19:23:36,373 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-30 19:23:36,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 19:23:36,444 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 23 [2023-08-30 19:23:36,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 19:23:36,512 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 23 [2023-08-30 19:23:36,675 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 15 [2023-08-30 19:23:36,684 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 23 [2023-08-30 19:23:37,095 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-08-30 19:23:37,096 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 59 [2023-08-30 19:23:37,113 INFO L321 Elim1Store]: treesize reduction 41, result has 14.6 percent of original size [2023-08-30 19:23:37,113 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 33 [2023-08-30 19:23:37,119 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2023-08-30 19:23:37,287 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 19:23:37,287 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 19:23:38,531 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 19:23:38,531 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 322 treesize of output 290 [2023-08-30 19:23:38,541 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 143 treesize of output 137 [2023-08-30 19:24:58,193 WARN L222 SmtUtils]: Spent 1.25m on a formula simplification. DAG size of input: 96 DAG size of output: 75 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-30 19:25:15,818 WARN L222 SmtUtils]: Spent 10.05s on a formula simplification that was a NOOP. DAG size: 71 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-30 19:25:38,214 WARN L222 SmtUtils]: Spent 9.13s on a formula simplification that was a NOOP. DAG size: 65 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-30 19:25:43,593 INFO L321 Elim1Store]: treesize reduction 4, result has 97.6 percent of original size [2023-08-30 19:25:43,594 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 2320 treesize of output 1754 [2023-08-30 19:25:46,386 INFO L321 Elim1Store]: treesize reduction 4, result has 97.6 percent of original size [2023-08-30 19:25:46,386 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 1629 treesize of output 1427 [2023-08-30 19:25:54,273 INFO L321 Elim1Store]: treesize reduction 4, result has 97.6 percent of original size [2023-08-30 19:25:54,273 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 1693 treesize of output 1491 [2023-08-30 19:26:01,464 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 19:26:01,464 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 52 [2023-08-30 19:26:01,477 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 19:26:01,477 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 155 treesize of output 151 [2023-08-30 19:26:01,484 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 138 treesize of output 130 [2023-08-30 19:26:01,489 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 130 treesize of output 128 [2023-08-30 19:26:01,496 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 128 treesize of output 124 [2023-08-30 19:26:02,319 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 19:26:02,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 19:26:02,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203937758] [2023-08-30 19:26:02,320 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-30 19:26:02,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2105139141] [2023-08-30 19:26:02,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2105139141] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 19:26:02,320 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 19:26:02,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 32 [2023-08-30 19:26:02,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153196617] [2023-08-30 19:26:02,321 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 19:26:02,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-08-30 19:26:02,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 19:26:02,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-08-30 19:26:02,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=964, Unknown=40, NotChecked=0, Total=1122 [2023-08-30 19:26:05,770 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-08-30 19:26:07,456 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-08-30 19:26:09,896 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-08-30 19:26:11,655 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-08-30 19:26:13,770 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-08-30 19:26:14,945 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-08-30 19:26:16,991 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-08-30 19:26:19,657 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-08-30 19:26:21,187 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-08-30 19:26:25,675 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-08-30 19:26:27,712 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-08-30 19:26:29,980 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.79s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-08-30 19:26:32,042 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-08-30 19:26:36,030 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-08-30 19:26:38,334 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.89s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-08-30 19:26:41,023 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-08-30 19:26:43,189 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-08-30 19:26:43,451 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 533 [2023-08-30 19:26:43,454 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 37 transitions, 178 flow. Second operand has 34 states, 34 states have (on average 128.64705882352942) internal successors, (4374), 34 states have internal predecessors, (4374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:26:43,454 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 19:26:43,454 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 533 [2023-08-30 19:26:43,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 19:27:09,748 WARN L222 SmtUtils]: Spent 5.01s on a formula simplification. DAG size of input: 181 DAG size of output: 140 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-30 19:27:11,756 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-08-30 19:27:41,446 WARN L222 SmtUtils]: Spent 15.59s on a formula simplification. DAG size of input: 167 DAG size of output: 138 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-30 19:28:20,512 WARN L222 SmtUtils]: Spent 24.57s on a formula simplification. DAG size of input: 210 DAG size of output: 155 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-30 19:28:22,526 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-08-30 19:28:24,546 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-08-30 19:29:21,885 WARN L222 SmtUtils]: Spent 35.68s on a formula simplification. DAG size of input: 189 DAG size of output: 167 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-30 19:30:55,806 WARN L222 SmtUtils]: Spent 1.17m on a formula simplification. DAG size of input: 232 DAG size of output: 189 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-30 19:30:58,391 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-08-30 19:31:00,502 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-08-30 19:31:02,542 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-08-30 19:31:56,019 WARN L222 SmtUtils]: Spent 26.22s on a formula simplification. DAG size of input: 199 DAG size of output: 161 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-30 19:31:58,701 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-08-30 19:32:01,080 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-08-30 19:32:03,260 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-08-30 19:33:26,942 WARN L222 SmtUtils]: Spent 51.59s on a formula simplification. DAG size of input: 242 DAG size of output: 203 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-30 19:33:28,959 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-08-30 19:33:30,994 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-08-30 19:33:33,775 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-08-30 19:33:35,895 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-08-30 19:34:21,480 WARN L222 SmtUtils]: Spent 10.36s on a formula simplification. DAG size of input: 150 DAG size of output: 117 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-30 19:34:25,160 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-08-30 19:34:27,180 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-08-30 19:34:28,340 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-08-30 19:34:30,352 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-08-30 19:34:32,355 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-08-30 19:34:34,363 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-08-30 19:34:37,216 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-08-30 19:34:39,223 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-08-30 19:34:41,323 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-08-30 19:34:43,205 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.88s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-08-30 19:34:45,303 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-08-30 19:34:47,071 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-08-30 19:34:49,266 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-08-30 19:34:50,917 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-08-30 19:34:52,972 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-08-30 19:34:54,944 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-08-30 19:34:56,956 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-08-30 19:34:58,968 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-08-30 19:35:00,976 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-08-30 19:35:02,988 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-08-30 19:35:56,500 WARN L222 SmtUtils]: Spent 8.02s on a formula simplification. DAG size of input: 192 DAG size of output: 151 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-30 19:35:58,117 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-08-30 19:36:00,463 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-08-30 19:36:03,592 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0, 1] [2023-08-30 19:36:05,632 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-08-30 19:36:07,962 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-08-30 19:36:10,204 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-08-30 19:36:12,272 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-08-30 19:36:14,280 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-08-30 19:36:16,289 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-08-30 19:36:18,299 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-08-30 19:36:20,303 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-08-30 19:36:23,168 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-08-30 19:36:25,178 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-08-30 19:36:27,190 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-08-30 19:36:44,384 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-08-30 19:36:46,010 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-08-30 19:36:48,047 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-08-30 19:36:50,880 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-08-30 19:36:52,825 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-08-30 19:36:54,904 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-08-30 19:36:57,198 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-08-30 19:36:58,348 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-08-30 19:37:00,569 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-08-30 19:37:01,952 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-08-30 19:37:04,140 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-08-30 19:37:05,292 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-08-30 19:37:07,557 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-08-30 19:37:09,991 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-08-30 19:37:12,883 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-08-30 19:37:15,170 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-08-30 19:37:17,175 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-08-30 19:37:20,310 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-08-30 19:37:22,319 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-08-30 19:37:22,370 INFO L130 PetriNetUnfolder]: 910/1546 cut-off events. [2023-08-30 19:37:22,370 INFO L131 PetriNetUnfolder]: For 1408/1408 co-relation queries the response was YES. [2023-08-30 19:37:22,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4888 conditions, 1546 events. 910/1546 cut-off events. For 1408/1408 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 7029 event pairs, 120 based on Foata normal form. 3/1549 useless extension candidates. Maximal degree in co-relation 4858. Up to 500 conditions per place. [2023-08-30 19:37:22,380 INFO L137 encePairwiseOnDemand]: 515/533 looper letters, 177 selfloop transitions, 78 changer transitions 6/261 dead transitions. [2023-08-30 19:37:22,381 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 261 transitions, 1613 flow [2023-08-30 19:37:22,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-08-30 19:37:22,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2023-08-30 19:37:22,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 4954 transitions. [2023-08-30 19:37:22,397 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.25120429998478777 [2023-08-30 19:37:22,397 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 4954 transitions. [2023-08-30 19:37:22,397 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 4954 transitions. [2023-08-30 19:37:22,400 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 19:37:22,400 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 4954 transitions. [2023-08-30 19:37:22,410 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 133.8918918918919) internal successors, (4954), 37 states have internal predecessors, (4954), 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 19:37:22,434 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 533.0) internal successors, (20254), 38 states have internal predecessors, (20254), 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 19:37:22,440 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 533.0) internal successors, (20254), 38 states have internal predecessors, (20254), 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 19:37:22,440 INFO L175 Difference]: Start difference. First operand has 49 places, 37 transitions, 178 flow. Second operand 37 states and 4954 transitions. [2023-08-30 19:37:22,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 261 transitions, 1613 flow [2023-08-30 19:37:22,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 261 transitions, 1568 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 19:37:22,450 INFO L231 Difference]: Finished difference. Result has 106 places, 111 transitions, 856 flow [2023-08-30 19:37:22,450 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=533, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=856, PETRI_PLACES=106, PETRI_TRANSITIONS=111} [2023-08-30 19:37:22,451 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 78 predicate places. [2023-08-30 19:37:22,451 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 111 transitions, 856 flow [2023-08-30 19:37:22,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 128.64705882352942) internal successors, (4374), 34 states have internal predecessors, (4374), 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 19:37:22,453 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 19:37:22,453 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 19:37:22,466 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 19:37:22,662 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,SelfDestructingSolverStorable7 [2023-08-30 19:37:22,662 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 19:37:22,662 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 19:37:22,662 INFO L85 PathProgramCache]: Analyzing trace with hash -965089616, now seen corresponding path program 2 times [2023-08-30 19:37:22,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 19:37:22,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379954870] [2023-08-30 19:37:22,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:37:22,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 19:37:22,683 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-30 19:37:22,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1495975067] [2023-08-30 19:37:22,684 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 19:37:22,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 19:37:22,684 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 19:37:22,685 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 19:37:22,689 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 19:37:23,110 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 19:37:23,111 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 19:37:23,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 89 conjunts are in the unsatisfiable core [2023-08-30 19:37:23,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 19:37:23,159 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2023-08-30 19:37:23,159 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 27 [2023-08-30 19:37:23,209 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-08-30 19:37:23,209 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2023-08-30 19:37:23,264 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-08-30 19:37:23,265 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-08-30 19:37:23,334 INFO L321 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2023-08-30 19:37:23,335 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 19:37:23,462 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-30 19:37:23,476 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-30 19:37:23,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 19:37:23,538 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 23 [2023-08-30 19:37:23,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 19:37:23,543 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 19:37:23,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 19:37:23,632 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 19:37:23,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 19:37:23,643 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 23 [2023-08-30 19:37:24,147 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 19:37:24,161 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-08-30 19:37:24,162 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 18 [2023-08-30 19:37:24,172 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 28 [2023-08-30 19:37:24,359 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-08-30 19:37:24,360 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 60 treesize of output 55 [2023-08-30 19:37:24,367 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-08-30 19:37:24,382 INFO L321 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2023-08-30 19:37:24,382 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 35 treesize of output 29 [2023-08-30 19:37:24,499 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 19:37:24,500 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 19:37:30,647 INFO L321 Elim1Store]: treesize reduction 4, result has 98.0 percent of original size [2023-08-30 19:37:30,647 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 3044 treesize of output 2593 Killed by 15