./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 TOGETHER --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/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 TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-31 01:39:16,582 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-31 01:39:16,591 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-31 01:39:16,631 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-31 01:39:16,631 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-31 01:39:16,634 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-31 01:39:16,636 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-31 01:39:16,639 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-31 01:39:16,641 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-31 01:39:16,645 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-31 01:39:16,646 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-31 01:39:16,648 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-31 01:39:16,648 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-31 01:39:16,650 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-31 01:39:16,651 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-31 01:39:16,656 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-31 01:39:16,657 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-31 01:39:16,659 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-31 01:39:16,662 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-31 01:39:16,668 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-31 01:39:16,669 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-31 01:39:16,670 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-31 01:39:16,671 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-31 01:39:16,671 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-31 01:39:16,678 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-31 01:39:16,678 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-31 01:39:16,678 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-31 01:39:16,680 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-31 01:39:16,680 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-31 01:39:16,681 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-31 01:39:16,681 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-31 01:39:16,683 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-31 01:39:16,685 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-31 01:39:16,685 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-31 01:39:16,686 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-31 01:39:16,686 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-31 01:39:16,687 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-31 01:39:16,687 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-31 01:39:16,687 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-31 01:39:16,688 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-31 01:39:16,688 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-31 01:39:16,690 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-31 01:39:16,721 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-31 01:39:16,721 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-31 01:39:16,722 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-31 01:39:16,722 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-31 01:39:16,723 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-31 01:39:16,723 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-31 01:39:16,724 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-31 01:39:16,724 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-31 01:39:16,724 INFO L138 SettingsManager]: * Use SBE=true [2023-08-31 01:39:16,724 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-31 01:39:16,725 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-31 01:39:16,725 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-31 01:39:16,726 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-31 01:39:16,726 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-31 01:39:16,726 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-31 01:39:16,726 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-31 01:39:16,726 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-31 01:39:16,726 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-31 01:39:16,727 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-31 01:39:16,727 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-31 01:39:16,727 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-31 01:39:16,727 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-31 01:39:16,727 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-31 01:39:16,727 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-31 01:39:16,728 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 01:39:16,728 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-31 01:39:16,728 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-31 01:39:16,728 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-31 01:39:16,728 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-31 01:39:16,729 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-31 01:39:16,729 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-31 01:39:16,729 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-31 01:39:16,729 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-31 01:39:16,729 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-31 01:39:16,729 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-31 01:39:16,730 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2bf204635285748ea2bd88f763410b9afff54eeccde3aa0a970ff723633af9c2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-31 01:39:17,005 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-31 01:39:17,027 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-31 01:39:17,030 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-31 01:39:17,031 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-31 01:39:17,031 INFO L275 PluginConnector]: CDTParser initialized [2023-08-31 01:39:17,032 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/loop-tiling-eq.wvr.c [2023-08-31 01:39:18,179 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-31 01:39:18,399 INFO L351 CDTParser]: Found 1 translation units. [2023-08-31 01:39:18,400 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/loop-tiling-eq.wvr.c [2023-08-31 01:39:18,411 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e9d572a2/701012e1ce314e389daeca23ab159911/FLAG70434cbdb [2023-08-31 01:39:18,424 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e9d572a2/701012e1ce314e389daeca23ab159911 [2023-08-31 01:39:18,425 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-31 01:39:18,427 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-31 01:39:18,429 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-31 01:39:18,429 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-31 01:39:18,432 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-31 01:39:18,433 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 01:39:18" (1/1) ... [2023-08-31 01:39:18,434 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1944dab0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:39:18, skipping insertion in model container [2023-08-31 01:39:18,434 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 01:39:18" (1/1) ... [2023-08-31 01:39:18,439 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-31 01:39:18,459 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-31 01:39:18,621 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] [2023-08-31 01:39:18,637 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 01:39:18,652 INFO L203 MainTranslator]: Completed pre-run [2023-08-31 01:39:18,693 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] [2023-08-31 01:39:18,697 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 01:39:18,718 INFO L208 MainTranslator]: Completed translation [2023-08-31 01:39:18,720 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:39:18 WrapperNode [2023-08-31 01:39:18,720 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-31 01:39:18,721 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-31 01:39:18,722 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-31 01:39:18,722 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-31 01:39:18,727 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:39:18" (1/1) ... [2023-08-31 01:39:18,745 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:39:18" (1/1) ... [2023-08-31 01:39:18,781 INFO L138 Inliner]: procedures = 25, calls = 41, calls flagged for inlining = 13, calls inlined = 17, statements flattened = 193 [2023-08-31 01:39:18,782 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-31 01:39:18,783 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-31 01:39:18,783 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-31 01:39:18,783 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-31 01:39:18,800 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:39:18" (1/1) ... [2023-08-31 01:39:18,801 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:39:18" (1/1) ... [2023-08-31 01:39:18,814 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:39:18" (1/1) ... [2023-08-31 01:39:18,815 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:39:18" (1/1) ... [2023-08-31 01:39:18,825 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:39:18" (1/1) ... [2023-08-31 01:39:18,835 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:39:18" (1/1) ... [2023-08-31 01:39:18,841 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:39:18" (1/1) ... [2023-08-31 01:39:18,846 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:39:18" (1/1) ... [2023-08-31 01:39:18,849 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-31 01:39:18,850 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-31 01:39:18,850 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-31 01:39:18,850 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-31 01:39:18,851 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:39:18" (1/1) ... [2023-08-31 01:39:18,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 01:39:18,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 01:39:18,886 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) [2023-08-31 01:39:18,908 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 [2023-08-31 01:39:18,921 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-31 01:39:18,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-31 01:39:18,922 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-31 01:39:18,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-31 01:39:18,922 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-31 01:39:18,923 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-08-31 01:39:18,923 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-31 01:39:18,923 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-31 01:39:18,923 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-31 01:39:18,923 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-31 01:39:18,924 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-31 01:39:18,924 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-31 01:39:18,924 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-31 01:39:18,924 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-31 01:39:18,924 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-31 01:39:18,926 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-31 01:39:19,091 INFO L236 CfgBuilder]: Building ICFG [2023-08-31 01:39:19,093 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-31 01:39:19,451 INFO L277 CfgBuilder]: Performing block encoding [2023-08-31 01:39:19,460 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-31 01:39:19,460 INFO L302 CfgBuilder]: Removed 7 assume(true) statements. [2023-08-31 01:39:19,462 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 01:39:19 BoogieIcfgContainer [2023-08-31 01:39:19,462 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-31 01:39:19,464 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-31 01:39:19,464 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-31 01:39:19,467 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-31 01:39:19,467 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.08 01:39:18" (1/3) ... [2023-08-31 01:39:19,468 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3330c435 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 01:39:19, skipping insertion in model container [2023-08-31 01:39:19,468 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:39:18" (2/3) ... [2023-08-31 01:39:19,468 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3330c435 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 01:39:19, skipping insertion in model container [2023-08-31 01:39:19,468 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 01:39:19" (3/3) ... [2023-08-31 01:39:19,469 INFO L112 eAbstractionObserver]: Analyzing ICFG loop-tiling-eq.wvr.c [2023-08-31 01:39:19,492 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-31 01:39:19,500 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-31 01:39:19,500 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-31 01:39:19,501 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-31 01:39:19,575 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-31 01:39:19,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 238 places, 257 transitions, 530 flow [2023-08-31 01:39:19,704 INFO L130 PetriNetUnfolder]: 26/255 cut-off events. [2023-08-31 01:39:19,705 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-31 01:39:19,710 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. [2023-08-31 01:39:19,710 INFO L82 GeneralOperation]: Start removeDead. Operand has 238 places, 257 transitions, 530 flow [2023-08-31 01:39:19,730 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 228 places, 247 transitions, 506 flow [2023-08-31 01:39:19,733 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 01:39:19,742 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 228 places, 247 transitions, 506 flow [2023-08-31 01:39:19,744 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 228 places, 247 transitions, 506 flow [2023-08-31 01:39:19,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 228 places, 247 transitions, 506 flow [2023-08-31 01:39:19,790 INFO L130 PetriNetUnfolder]: 26/247 cut-off events. [2023-08-31 01:39:19,790 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-31 01:39:19,791 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. [2023-08-31 01:39:19,792 INFO L119 LiptonReduction]: Number of co-enabled transitions 972 [2023-08-31 01:39:44,377 WARN L222 SmtUtils]: Spent 5.74s on a formula simplification. DAG size of input: 132 DAG size of output: 128 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-31 01:39:47,953 INFO L134 LiptonReduction]: Checked pairs total: 1519 [2023-08-31 01:39:47,954 INFO L136 LiptonReduction]: Total number of compositions: 276 [2023-08-31 01:39:47,966 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-31 01:39:47,970 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;@6cff5089, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 01:39:47,971 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-31 01:39:47,977 INFO L130 PetriNetUnfolder]: 7/27 cut-off events. [2023-08-31 01:39:47,977 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-31 01:39:47,978 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:39:47,978 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:39:47,979 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 01:39:47,983 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:39:47,984 INFO L85 PathProgramCache]: Analyzing trace with hash -2101152341, now seen corresponding path program 1 times [2023-08-31 01:39:47,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:39:47,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340899438] [2023-08-31 01:39:47,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:39:47,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:39:48,068 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-31 01:39:48,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [82582110] [2023-08-31 01:39:48,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:39:48,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:39:48,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 01:39:48,076 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) [2023-08-31 01:39:48,078 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-31 01:39:48,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:39:48,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-31 01:39:48,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 01:39:48,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:39:48,282 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 01:39:48,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:39:48,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340899438] [2023-08-31 01:39:48,284 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-31 01:39:48,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [82582110] [2023-08-31 01:39:48,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [82582110] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:39:48,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:39:48,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-31 01:39:48,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632344439] [2023-08-31 01:39:48,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:39:48,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 01:39:48,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:39:48,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 01:39:48,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-31 01:39:48,376 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 226 out of 533 [2023-08-31 01:39:48,382 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) [2023-08-31 01:39:48,382 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:39:48,382 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 226 of 533 [2023-08-31 01:39:48,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:39:48,571 INFO L130 PetriNetUnfolder]: 205/348 cut-off events. [2023-08-31 01:39:48,571 INFO L131 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2023-08-31 01:39:48,573 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. [2023-08-31 01:39:48,576 INFO L137 encePairwiseOnDemand]: 529/533 looper letters, 26 selfloop transitions, 2 changer transitions 16/47 dead transitions. [2023-08-31 01:39:48,576 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 47 transitions, 206 flow [2023-08-31 01:39:48,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-31 01:39:48,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-31 01:39:48,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 949 transitions. [2023-08-31 01:39:48,601 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4451219512195122 [2023-08-31 01:39:48,602 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 949 transitions. [2023-08-31 01:39:48,602 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 949 transitions. [2023-08-31 01:39:48,606 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:39:48,608 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 949 transitions. [2023-08-31 01:39:48,614 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) [2023-08-31 01:39:48,622 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) [2023-08-31 01:39:48,626 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) [2023-08-31 01:39:48,628 INFO L175 Difference]: Start difference. First operand has 28 places, 28 transitions, 68 flow. Second operand 4 states and 949 transitions. [2023-08-31 01:39:48,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 47 transitions, 206 flow [2023-08-31 01:39:48,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 47 transitions, 190 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-31 01:39:48,633 INFO L231 Difference]: Finished difference. Result has 29 places, 29 transitions, 74 flow [2023-08-31 01:39:48,635 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} [2023-08-31 01:39:48,639 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 1 predicate places. [2023-08-31 01:39:48,640 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 29 transitions, 74 flow [2023-08-31 01:39:48,641 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) [2023-08-31 01:39:48,641 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:39:48,645 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:39:48,656 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-31 01:39:48,851 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 [2023-08-31 01:39:48,851 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 01:39:48,852 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:39:48,852 INFO L85 PathProgramCache]: Analyzing trace with hash 1311819515, now seen corresponding path program 1 times [2023-08-31 01:39:48,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:39:48,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456120550] [2023-08-31 01:39:48,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:39:48,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:39:48,872 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-31 01:39:48,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [809971864] [2023-08-31 01:39:48,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:39:48,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:39:48,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 01:39:48,882 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) [2023-08-31 01:39:48,885 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-31 01:39:49,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:39:49,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-31 01:39:49,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 01:39:49,055 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:39:49,056 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 01:39:49,095 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:39:49,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:39:49,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456120550] [2023-08-31 01:39:49,096 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-31 01:39:49,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [809971864] [2023-08-31 01:39:49,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [809971864] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 01:39:49,097 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-31 01:39:49,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2023-08-31 01:39:49,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132317933] [2023-08-31 01:39:49,098 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-31 01:39:49,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-31 01:39:49,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:39:49,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-31 01:39:49,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-31 01:39:49,184 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 222 out of 533 [2023-08-31 01:39:49,186 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) [2023-08-31 01:39:49,186 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:39:49,187 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 222 of 533 [2023-08-31 01:39:49,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:39:49,305 INFO L130 PetriNetUnfolder]: 162/279 cut-off events. [2023-08-31 01:39:49,306 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-08-31 01:39:49,309 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. [2023-08-31 01:39:49,311 INFO L137 encePairwiseOnDemand]: 527/533 looper letters, 38 selfloop transitions, 6 changer transitions 0/46 dead transitions. [2023-08-31 01:39:49,312 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 46 transitions, 198 flow [2023-08-31 01:39:49,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 01:39:49,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 01:39:49,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1376 transitions. [2023-08-31 01:39:49,316 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43026891807379614 [2023-08-31 01:39:49,316 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1376 transitions. [2023-08-31 01:39:49,316 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1376 transitions. [2023-08-31 01:39:49,317 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:39:49,317 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1376 transitions. [2023-08-31 01:39:49,320 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) [2023-08-31 01:39:49,326 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) [2023-08-31 01:39:49,327 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) [2023-08-31 01:39:49,328 INFO L175 Difference]: Start difference. First operand has 29 places, 29 transitions, 74 flow. Second operand 6 states and 1376 transitions. [2023-08-31 01:39:49,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 46 transitions, 198 flow [2023-08-31 01:39:49,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 46 transitions, 194 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-31 01:39:49,330 INFO L231 Difference]: Finished difference. Result has 34 places, 32 transitions, 103 flow [2023-08-31 01:39:49,330 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} [2023-08-31 01:39:49,330 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 6 predicate places. [2023-08-31 01:39:49,331 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 32 transitions, 103 flow [2023-08-31 01:39:49,333 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) [2023-08-31 01:39:49,333 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:39:49,333 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] [2023-08-31 01:39:49,343 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-31 01:39:49,544 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 [2023-08-31 01:39:49,544 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 01:39:49,545 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:39:49,545 INFO L85 PathProgramCache]: Analyzing trace with hash -1014923716, now seen corresponding path program 1 times [2023-08-31 01:39:49,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:39:49,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443648550] [2023-08-31 01:39:49,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:39:49,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:39:49,572 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-31 01:39:49,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [261390258] [2023-08-31 01:39:49,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:39:49,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:39:49,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 01:39:49,574 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) [2023-08-31 01:39:49,583 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-31 01:39:49,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:39:49,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-31 01:39:49,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 01:39:49,717 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 01:39:49,718 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 01:39:49,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:39:49,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443648550] [2023-08-31 01:39:49,719 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-31 01:39:49,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [261390258] [2023-08-31 01:39:49,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [261390258] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:39:49,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:39:49,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-31 01:39:49,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976695903] [2023-08-31 01:39:49,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:39:49,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 01:39:49,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:39:49,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 01:39:49,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-31 01:39:49,803 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 533 [2023-08-31 01:39:49,804 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) [2023-08-31 01:39:49,804 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:39:49,804 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 533 [2023-08-31 01:39:49,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:39:49,972 INFO L130 PetriNetUnfolder]: 432/745 cut-off events. [2023-08-31 01:39:49,972 INFO L131 PetriNetUnfolder]: For 129/165 co-relation queries the response was YES. [2023-08-31 01:39:49,973 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. [2023-08-31 01:39:49,976 INFO L137 encePairwiseOnDemand]: 529/533 looper letters, 27 selfloop transitions, 3 changer transitions 44/77 dead transitions. [2023-08-31 01:39:49,976 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 77 transitions, 393 flow [2023-08-31 01:39:49,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-31 01:39:49,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-31 01:39:49,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1162 transitions. [2023-08-31 01:39:49,980 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43602251407129455 [2023-08-31 01:39:49,980 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1162 transitions. [2023-08-31 01:39:49,980 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1162 transitions. [2023-08-31 01:39:49,984 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:39:49,984 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1162 transitions. [2023-08-31 01:39:49,986 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) [2023-08-31 01:39:49,990 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) [2023-08-31 01:39:49,992 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) [2023-08-31 01:39:49,992 INFO L175 Difference]: Start difference. First operand has 34 places, 32 transitions, 103 flow. Second operand 5 states and 1162 transitions. [2023-08-31 01:39:49,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 77 transitions, 393 flow [2023-08-31 01:39:49,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 77 transitions, 392 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-31 01:39:49,998 INFO L231 Difference]: Finished difference. Result has 40 places, 33 transitions, 125 flow [2023-08-31 01:39:49,998 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} [2023-08-31 01:39:50,001 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 12 predicate places. [2023-08-31 01:39:50,001 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 33 transitions, 125 flow [2023-08-31 01:39:50,002 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) [2023-08-31 01:39:50,002 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:39:50,002 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] [2023-08-31 01:39:50,009 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-31 01:39:50,208 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 [2023-08-31 01:39:50,209 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 01:39:50,209 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:39:50,209 INFO L85 PathProgramCache]: Analyzing trace with hash 1495140604, now seen corresponding path program 1 times [2023-08-31 01:39:50,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:39:50,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650924008] [2023-08-31 01:39:50,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:39:50,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:39:50,224 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-31 01:39:50,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1151282284] [2023-08-31 01:39:50,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:39:50,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:39:50,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 01:39:50,225 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) [2023-08-31 01:39:50,228 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-31 01:39:50,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:39:50,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-31 01:39:50,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 01:39:50,377 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:39:50,377 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 01:39:50,419 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:39:50,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:39:50,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650924008] [2023-08-31 01:39:50,419 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-31 01:39:50,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1151282284] [2023-08-31 01:39:50,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1151282284] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-31 01:39:50,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-31 01:39:50,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2023-08-31 01:39:50,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313546856] [2023-08-31 01:39:50,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:39:50,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 01:39:50,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:39:50,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 01:39:50,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-08-31 01:39:50,543 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 533 [2023-08-31 01:39:50,544 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) [2023-08-31 01:39:50,544 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:39:50,544 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 533 [2023-08-31 01:39:50,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:39:50,808 INFO L130 PetriNetUnfolder]: 180/316 cut-off events. [2023-08-31 01:39:50,809 INFO L131 PetriNetUnfolder]: For 58/66 co-relation queries the response was YES. [2023-08-31 01:39:50,810 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. [2023-08-31 01:39:50,811 INFO L137 encePairwiseOnDemand]: 524/533 looper letters, 34 selfloop transitions, 9 changer transitions 0/46 dead transitions. [2023-08-31 01:39:50,811 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 46 transitions, 252 flow [2023-08-31 01:39:50,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-31 01:39:50,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-31 01:39:50,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1084 transitions. [2023-08-31 01:39:50,814 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40675422138836775 [2023-08-31 01:39:50,814 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1084 transitions. [2023-08-31 01:39:50,815 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1084 transitions. [2023-08-31 01:39:50,815 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:39:50,815 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1084 transitions. [2023-08-31 01:39:50,817 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) [2023-08-31 01:39:50,821 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) [2023-08-31 01:39:50,823 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) [2023-08-31 01:39:50,824 INFO L175 Difference]: Start difference. First operand has 40 places, 33 transitions, 125 flow. Second operand 5 states and 1084 transitions. [2023-08-31 01:39:50,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 46 transitions, 252 flow [2023-08-31 01:39:50,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 46 transitions, 237 flow, removed 5 selfloop flow, removed 3 redundant places. [2023-08-31 01:39:50,828 INFO L231 Difference]: Finished difference. Result has 43 places, 38 transitions, 178 flow [2023-08-31 01:39:50,828 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} [2023-08-31 01:39:50,830 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 15 predicate places. [2023-08-31 01:39:50,830 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 38 transitions, 178 flow [2023-08-31 01:39:50,830 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) [2023-08-31 01:39:50,830 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:39:50,831 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] [2023-08-31 01:39:50,839 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-31 01:39:51,036 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 [2023-08-31 01:39:51,037 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 01:39:51,037 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:39:51,037 INFO L85 PathProgramCache]: Analyzing trace with hash 894191198, now seen corresponding path program 1 times [2023-08-31 01:39:51,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:39:51,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304193983] [2023-08-31 01:39:51,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:39:51,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:39:51,051 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-31 01:39:51,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [304928682] [2023-08-31 01:39:51,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:39:51,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:39:51,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 01:39:51,053 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) [2023-08-31 01:39:51,075 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-31 01:39:51,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:39:51,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-31 01:39:51,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 01:39:51,428 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-31 01:39:51,428 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 01:39:51,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:39:51,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304193983] [2023-08-31 01:39:51,429 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-31 01:39:51,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [304928682] [2023-08-31 01:39:51,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [304928682] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:39:51,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:39:51,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-31 01:39:51,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136460301] [2023-08-31 01:39:51,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:39:51,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-31 01:39:51,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:39:51,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-31 01:39:51,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-31 01:39:52,212 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 211 out of 533 [2023-08-31 01:39:52,213 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) [2023-08-31 01:39:52,213 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:39:52,213 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 211 of 533 [2023-08-31 01:39:52,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:39:52,473 INFO L130 PetriNetUnfolder]: 180/316 cut-off events. [2023-08-31 01:39:52,474 INFO L131 PetriNetUnfolder]: For 179/187 co-relation queries the response was YES. [2023-08-31 01:39:52,475 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. [2023-08-31 01:39:52,476 INFO L137 encePairwiseOnDemand]: 526/533 looper letters, 30 selfloop transitions, 2 changer transitions 7/42 dead transitions. [2023-08-31 01:39:52,476 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 42 transitions, 280 flow [2023-08-31 01:39:52,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-31 01:39:52,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-31 01:39:52,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1722 transitions. [2023-08-31 01:39:52,481 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40384615384615385 [2023-08-31 01:39:52,481 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1722 transitions. [2023-08-31 01:39:52,481 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1722 transitions. [2023-08-31 01:39:52,482 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:39:52,482 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1722 transitions. [2023-08-31 01:39:52,485 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) [2023-08-31 01:39:52,490 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) [2023-08-31 01:39:52,493 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) [2023-08-31 01:39:52,493 INFO L175 Difference]: Start difference. First operand has 43 places, 38 transitions, 178 flow. Second operand 8 states and 1722 transitions. [2023-08-31 01:39:52,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 42 transitions, 280 flow [2023-08-31 01:39:52,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 42 transitions, 276 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-31 01:39:52,497 INFO L231 Difference]: Finished difference. Result has 52 places, 35 transitions, 162 flow [2023-08-31 01:39:52,498 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} [2023-08-31 01:39:52,500 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 24 predicate places. [2023-08-31 01:39:52,500 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 35 transitions, 162 flow [2023-08-31 01:39:52,501 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) [2023-08-31 01:39:52,501 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:39:52,501 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] [2023-08-31 01:39:52,508 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-31 01:39:52,708 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 [2023-08-31 01:39:52,708 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 01:39:52,709 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:39:52,709 INFO L85 PathProgramCache]: Analyzing trace with hash -1474746605, now seen corresponding path program 1 times [2023-08-31 01:39:52,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:39:52,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713622047] [2023-08-31 01:39:52,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:39:52,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:39:52,724 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-31 01:39:52,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1568031717] [2023-08-31 01:39:52,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:39:52,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:39:52,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 01:39:52,726 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) [2023-08-31 01:39:52,728 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-31 01:39:52,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:39:52,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-31 01:39:52,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 01:39:52,909 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-31 01:39:52,909 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 01:39:52,938 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-31 01:39:52,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:39:52,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713622047] [2023-08-31 01:39:52,938 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-31 01:39:52,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1568031717] [2023-08-31 01:39:52,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1568031717] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-31 01:39:52,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-31 01:39:52,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-08-31 01:39:52,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085710539] [2023-08-31 01:39:52,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:39:52,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 01:39:52,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:39:52,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 01:39:52,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-31 01:39:53,043 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 533 [2023-08-31 01:39:53,044 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) [2023-08-31 01:39:53,045 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:39:53,045 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 533 [2023-08-31 01:39:53,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:39:53,125 INFO L130 PetriNetUnfolder]: 178/310 cut-off events. [2023-08-31 01:39:53,126 INFO L131 PetriNetUnfolder]: For 137/145 co-relation queries the response was YES. [2023-08-31 01:39:53,126 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. [2023-08-31 01:39:53,128 INFO L137 encePairwiseOnDemand]: 528/533 looper letters, 29 selfloop transitions, 4 changer transitions 0/36 dead transitions. [2023-08-31 01:39:53,128 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 36 transitions, 232 flow [2023-08-31 01:39:53,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-31 01:39:53,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-31 01:39:53,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1093 transitions. [2023-08-31 01:39:53,131 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4101313320825516 [2023-08-31 01:39:53,131 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1093 transitions. [2023-08-31 01:39:53,132 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1093 transitions. [2023-08-31 01:39:53,132 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:39:53,132 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1093 transitions. [2023-08-31 01:39:53,134 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) [2023-08-31 01:39:53,138 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) [2023-08-31 01:39:53,138 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) [2023-08-31 01:39:53,139 INFO L175 Difference]: Start difference. First operand has 52 places, 35 transitions, 162 flow. Second operand 5 states and 1093 transitions. [2023-08-31 01:39:53,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 36 transitions, 232 flow [2023-08-31 01:39:53,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 36 transitions, 212 flow, removed 7 selfloop flow, removed 7 redundant places. [2023-08-31 01:39:53,141 INFO L231 Difference]: Finished difference. Result has 45 places, 36 transitions, 160 flow [2023-08-31 01:39:53,141 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} [2023-08-31 01:39:53,142 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 17 predicate places. [2023-08-31 01:39:53,142 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 36 transitions, 160 flow [2023-08-31 01:39:53,142 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) [2023-08-31 01:39:53,142 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:39:53,143 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] [2023-08-31 01:39:53,151 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-31 01:39:53,351 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 [2023-08-31 01:39:53,351 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 01:39:53,352 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:39:53,352 INFO L85 PathProgramCache]: Analyzing trace with hash 527810065, now seen corresponding path program 1 times [2023-08-31 01:39:53,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:39:53,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53992565] [2023-08-31 01:39:53,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:39:53,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:39:53,374 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-31 01:39:53,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1039529554] [2023-08-31 01:39:53,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:39:53,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:39:53,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 01:39:53,376 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) [2023-08-31 01:39:53,396 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-31 01:39:53,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:39:53,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-31 01:39:53,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 01:39:53,545 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-31 01:39:53,545 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 01:39:53,578 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-31 01:39:53,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:39:53,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53992565] [2023-08-31 01:39:53,579 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-31 01:39:53,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1039529554] [2023-08-31 01:39:53,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1039529554] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-31 01:39:53,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-31 01:39:53,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-08-31 01:39:53,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389266551] [2023-08-31 01:39:53,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:39:53,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 01:39:53,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:39:53,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 01:39:53,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-08-31 01:39:53,658 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 533 [2023-08-31 01:39:53,659 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) [2023-08-31 01:39:53,659 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:39:53,659 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 533 [2023-08-31 01:39:53,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:39:53,752 INFO L130 PetriNetUnfolder]: 193/340 cut-off events. [2023-08-31 01:39:53,752 INFO L131 PetriNetUnfolder]: For 262/276 co-relation queries the response was YES. [2023-08-31 01:39:53,753 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. [2023-08-31 01:39:53,754 INFO L137 encePairwiseOnDemand]: 527/533 looper letters, 41 selfloop transitions, 5 changer transitions 0/48 dead transitions. [2023-08-31 01:39:53,754 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 48 transitions, 309 flow [2023-08-31 01:39:53,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-31 01:39:53,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-31 01:39:53,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1082 transitions. [2023-08-31 01:39:53,758 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40600375234521574 [2023-08-31 01:39:53,758 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1082 transitions. [2023-08-31 01:39:53,758 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1082 transitions. [2023-08-31 01:39:53,759 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:39:53,759 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1082 transitions. [2023-08-31 01:39:53,761 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) [2023-08-31 01:39:53,764 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) [2023-08-31 01:39:53,765 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) [2023-08-31 01:39:53,765 INFO L175 Difference]: Start difference. First operand has 45 places, 36 transitions, 160 flow. Second operand 5 states and 1082 transitions. [2023-08-31 01:39:53,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 48 transitions, 309 flow [2023-08-31 01:39:53,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 48 transitions, 304 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-31 01:39:53,767 INFO L231 Difference]: Finished difference. Result has 49 places, 37 transitions, 178 flow [2023-08-31 01:39:53,767 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} [2023-08-31 01:39:53,768 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 21 predicate places. [2023-08-31 01:39:53,768 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 37 transitions, 178 flow [2023-08-31 01:39:53,768 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) [2023-08-31 01:39:53,769 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:39:53,769 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] [2023-08-31 01:39:53,776 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-31 01:39:53,974 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 [2023-08-31 01:39:53,975 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 01:39:53,975 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:39:53,975 INFO L85 PathProgramCache]: Analyzing trace with hash -1892160258, now seen corresponding path program 1 times [2023-08-31 01:39:53,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:39:53,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102968975] [2023-08-31 01:39:53,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:39:53,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:39:53,990 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-31 01:39:53,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1555621515] [2023-08-31 01:39:53,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:39:53,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:39:53,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 01:39:53,992 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) [2023-08-31 01:39:53,994 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-31 01:39:54,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:39:54,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 82 conjunts are in the unsatisfiable core [2023-08-31 01:39:54,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 01:39:54,315 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2023-08-31 01:39:54,316 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 [2023-08-31 01:39:54,362 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-08-31 01:39:54,363 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 [2023-08-31 01:39:54,443 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-08-31 01:39:54,444 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 [2023-08-31 01:39:54,508 INFO L321 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2023-08-31 01:39:54,508 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 [2023-08-31 01:39:54,626 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 [2023-08-31 01:39:54,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 01:39:54,688 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 [2023-08-31 01:39:54,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 01:39:54,760 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 [2023-08-31 01:39:54,892 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 [2023-08-31 01:39:54,900 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 [2023-08-31 01:39:55,301 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-08-31 01:39:55,302 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 [2023-08-31 01:39:55,320 INFO L321 Elim1Store]: treesize reduction 41, result has 14.6 percent of original size [2023-08-31 01:39:55,320 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 [2023-08-31 01:39:55,325 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 [2023-08-31 01:39:55,498 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-31 01:39:55,499 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 01:39:55,950 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 01:39:55,950 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 [2023-08-31 01:39:55,978 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 [2023-08-31 01:41:03,281 WARN L222 SmtUtils]: Spent 1.05m on a formula simplification. DAG size of input: 96 DAG size of output: 79 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-31 01:41:32,671 WARN L222 SmtUtils]: Spent 20.36s on a formula simplification. DAG size of input: 75 DAG size of output: 71 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-31 01:41:57,150 WARN L222 SmtUtils]: Spent 10.23s 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) [2023-08-31 01:42:06,152 INFO L321 Elim1Store]: treesize reduction 4, result has 97.6 percent of original size [2023-08-31 01:42:06,153 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 [2023-08-31 01:42:08,915 INFO L321 Elim1Store]: treesize reduction 4, result has 97.6 percent of original size [2023-08-31 01:42:08,915 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 [2023-08-31 01:42:16,418 INFO L321 Elim1Store]: treesize reduction 4, result has 97.6 percent of original size [2023-08-31 01:42:16,419 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 [2023-08-31 01:42:21,742 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 01:42:21,742 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 [2023-08-31 01:42:21,752 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 01:42:21,753 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 [2023-08-31 01:42:21,762 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 [2023-08-31 01:42:21,768 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 [2023-08-31 01:42:21,774 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 [2023-08-31 01:42:22,507 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-31 01:42:22,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:42:22,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102968975] [2023-08-31 01:42:22,508 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-31 01:42:22,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1555621515] [2023-08-31 01:42:22,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1555621515] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 01:42:22,508 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-31 01:42:22,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 32 [2023-08-31 01:42:22,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413928874] [2023-08-31 01:42:22,508 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-31 01:42:22,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-08-31 01:42:22,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:42:22,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-08-31 01:42:22,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=964, Unknown=40, NotChecked=0, Total=1122 [2023-08-31 01:42:24,825 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-08-31 01:42:26,897 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-08-31 01:42:28,945 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-08-31 01:42:31,716 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-08-31 01:42:34,330 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-08-31 01:42:37,455 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-08-31 01:42:40,983 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-08-31 01:42:42,103 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-08-31 01:42:44,138 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-08-31 01:42:47,583 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-08-31 01:42:49,618 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-08-31 01:42:52,241 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-08-31 01:42:54,529 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-08-31 01:42:56,585 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-08-31 01:42:59,022 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-08-31 01:43:01,045 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-08-31 01:43:02,973 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-08-31 01:43:05,199 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-08-31 01:43:07,258 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-08-31 01:43:09,276 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-08-31 01:43:11,529 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-08-31 01:43:14,487 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-08-31 01:43:16,500 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-08-31 01:43:18,516 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-08-31 01:43:18,843 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 533 [2023-08-31 01:43:18,846 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) [2023-08-31 01:43:18,846 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:43:18,847 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 533 [2023-08-31 01:43:18,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:43:49,102 WARN L222 SmtUtils]: Spent 5.16s 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) [2023-08-31 01:45:04,775 WARN L222 SmtUtils]: Spent 57.79s on a formula simplification. DAG size of input: 171 DAG size of output: 136 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-31 01:46:00,847 WARN L222 SmtUtils]: Spent 37.93s on a formula simplification. DAG size of input: 214 DAG size of output: 167 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-31 01:46:02,858 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-08-31 01:46:04,923 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-08-31 01:47:00,412 WARN L222 SmtUtils]: Spent 35.30s on a formula simplification. DAG size of input: 193 DAG size of output: 158 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-31 01:47:02,419 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-08-31 01:48:01,605 WARN L222 SmtUtils]: Spent 34.90s on a formula simplification. DAG size of input: 236 DAG size of output: 184 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-31 01:48:03,618 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-08-31 01:48:05,796 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-08-31 01:48:07,826 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-08-31 01:48:09,857 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-08-31 01:49:07,066 WARN L222 SmtUtils]: Spent 32.61s on a formula simplification. DAG size of input: 203 DAG size of output: 161 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-31 01:49:10,667 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-08-31 01:49:12,840 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-08-31 01:49:13,982 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-08-31 01:50:41,207 WARN L222 SmtUtils]: Spent 56.88s on a formula simplification. DAG size of input: 246 DAG size of output: 203 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-31 01:50:42,257 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-08-31 01:50:44,308 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-08-31 01:50:46,350 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-08-31 01:51:42,231 WARN L222 SmtUtils]: Spent 18.20s on a formula simplification. DAG size of input: 150 DAG size of output: 129 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-31 01:51:46,444 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-08-31 01:51:48,077 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-08-31 01:51:50,085 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-08-31 01:51:52,091 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-08-31 01:51:54,097 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-08-31 01:51:56,596 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-08-31 01:51:59,432 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-08-31 01:52:01,443 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-08-31 01:52:03,380 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.85s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-08-31 01:52:04,517 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-08-31 01:52:06,523 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-08-31 01:52:08,678 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-08-31 01:52:10,686 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-08-31 01:52:12,695 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-08-31 01:52:59,010 WARN L222 SmtUtils]: Spent 7.34s on a formula simplification. DAG size of input: 192 DAG size of output: 142 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-31 01:53:01,235 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-08-31 01:53:03,408 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-08-31 01:53:05,898 WARN L539 Checker$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] [2023-08-31 01:53:08,571 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-08-31 01:53:10,603 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-08-31 01:53:12,299 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-08-31 01:53:14,170 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.87s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-08-31 01:53:16,227 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-08-31 01:53:18,496 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-08-31 01:53:20,508 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-08-31 01:53:23,650 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-08-31 01:53:44,667 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] Killed by 15