./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/popl20-queue-add-3.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/weaver/popl20-queue-add-3.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 6990ac65798f2c5a95ce01b01bd39640075d7bea37e69dff3da0d3d7c4b56ab2 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 21:25:33,254 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 21:25:33,256 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 21:25:33,288 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 21:25:33,288 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 21:25:33,291 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 21:25:33,292 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 21:25:33,294 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 21:25:33,296 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 21:25:33,299 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 21:25:33,299 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 21:25:33,301 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 21:25:33,301 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 21:25:33,303 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 21:25:33,304 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 21:25:33,307 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 21:25:33,308 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 21:25:33,309 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 21:25:33,310 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 21:25:33,314 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 21:25:33,315 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 21:25:33,315 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 21:25:33,316 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 21:25:33,316 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 21:25:33,321 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 21:25:33,321 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 21:25:33,322 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 21:25:33,323 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 21:25:33,323 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 21:25:33,324 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 21:25:33,324 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 21:25:33,325 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 21:25:33,326 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 21:25:33,326 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 21:25:33,327 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 21:25:33,327 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 21:25:33,328 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 21:25:33,328 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 21:25:33,328 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 21:25:33,329 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 21:25:33,329 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 21:25:33,330 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-30 21:25:33,358 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 21:25:33,358 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 21:25:33,359 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 21:25:33,359 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 21:25:33,360 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 21:25:33,360 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 21:25:33,361 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 21:25:33,361 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 21:25:33,361 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 21:25:33,361 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 21:25:33,362 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 21:25:33,362 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 21:25:33,362 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 21:25:33,362 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 21:25:33,362 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 21:25:33,362 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 21:25:33,362 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 21:25:33,363 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 21:25:33,363 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 21:25:33,363 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 21:25:33,363 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 21:25:33,363 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 21:25:33,363 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 21:25:33,364 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 21:25:33,364 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 21:25:33,364 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 21:25:33,364 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 21:25:33,364 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 21:25:33,364 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 21:25:33,364 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 21:25:33,365 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 21:25:33,365 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 21:25:33,365 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 21:25:33,365 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 21:25:33,365 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 21:25:33,365 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6990ac65798f2c5a95ce01b01bd39640075d7bea37e69dff3da0d3d7c4b56ab2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 21:25:33,570 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 21:25:33,583 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 21:25:33,585 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 21:25:33,585 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 21:25:33,585 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 21:25:33,586 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-queue-add-3.wvr.c [2023-08-30 21:25:34,481 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 21:25:34,653 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 21:25:34,653 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-queue-add-3.wvr.c [2023-08-30 21:25:34,658 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d8a2b29a/589a49c4689547fc9d6fec90c7b4fa48/FLAG414860fd9 [2023-08-30 21:25:34,666 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d8a2b29a/589a49c4689547fc9d6fec90c7b4fa48 [2023-08-30 21:25:34,667 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 21:25:34,668 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 21:25:34,669 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 21:25:34,669 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 21:25:34,673 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 21:25:34,673 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 09:25:34" (1/1) ... [2023-08-30 21:25:34,674 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3cfe01a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:25:34, skipping insertion in model container [2023-08-30 21:25:34,674 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 09:25:34" (1/1) ... [2023-08-30 21:25:34,678 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 21:25:34,691 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 21:25:34,823 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-queue-add-3.wvr.c[3412,3425] [2023-08-30 21:25:34,831 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 21:25:34,840 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 21:25:34,871 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-queue-add-3.wvr.c[3412,3425] [2023-08-30 21:25:34,878 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 21:25:34,884 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 21:25:34,886 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 21:25:34,890 INFO L208 MainTranslator]: Completed translation [2023-08-30 21:25:34,890 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:25:34 WrapperNode [2023-08-30 21:25:34,890 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 21:25:34,892 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 21:25:34,892 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 21:25:34,892 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 21:25:34,900 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:25:34" (1/1) ... [2023-08-30 21:25:34,919 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:25:34" (1/1) ... [2023-08-30 21:25:34,947 INFO L138 Inliner]: procedures = 25, calls = 55, calls flagged for inlining = 16, calls inlined = 18, statements flattened = 252 [2023-08-30 21:25:34,948 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 21:25:34,948 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 21:25:34,949 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 21:25:34,949 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 21:25:34,955 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:25:34" (1/1) ... [2023-08-30 21:25:34,955 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:25:34" (1/1) ... [2023-08-30 21:25:34,959 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:25:34" (1/1) ... [2023-08-30 21:25:34,963 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:25:34" (1/1) ... [2023-08-30 21:25:34,967 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:25:34" (1/1) ... [2023-08-30 21:25:34,974 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:25:34" (1/1) ... [2023-08-30 21:25:34,977 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:25:34" (1/1) ... [2023-08-30 21:25:34,978 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:25:34" (1/1) ... [2023-08-30 21:25:34,980 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 21:25:34,984 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 21:25:34,985 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 21:25:34,985 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 21:25:34,985 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:25:34" (1/1) ... [2023-08-30 21:25:34,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 21:25:34,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 21:25:35,007 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 21:25:35,011 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 21:25:35,036 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 21:25:35,036 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 21:25:35,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 21:25:35,040 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 21:25:35,040 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 21:25:35,040 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 21:25:35,040 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 21:25:35,040 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 21:25:35,040 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-30 21:25:35,040 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-30 21:25:35,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 21:25:35,040 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 21:25:35,040 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 21:25:35,040 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 21:25:35,040 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 21:25:35,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 21:25:35,041 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 21:25:35,042 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 21:25:35,117 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 21:25:35,118 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 21:25:35,457 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 21:25:35,537 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 21:25:35,544 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2023-08-30 21:25:35,546 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 09:25:35 BoogieIcfgContainer [2023-08-30 21:25:35,546 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 21:25:35,548 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 21:25:35,548 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 21:25:35,550 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 21:25:35,550 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 09:25:34" (1/3) ... [2023-08-30 21:25:35,550 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e6bf503 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 09:25:35, skipping insertion in model container [2023-08-30 21:25:35,550 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:25:34" (2/3) ... [2023-08-30 21:25:35,551 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e6bf503 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 09:25:35, skipping insertion in model container [2023-08-30 21:25:35,551 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 09:25:35" (3/3) ... [2023-08-30 21:25:35,552 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-queue-add-3.wvr.c [2023-08-30 21:25:35,557 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 21:25:35,564 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 21:25:35,564 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-30 21:25:35,565 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 21:25:35,633 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-30 21:25:35,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 193 places, 201 transitions, 426 flow [2023-08-30 21:25:35,734 INFO L130 PetriNetUnfolder]: 18/198 cut-off events. [2023-08-30 21:25:35,734 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 21:25:35,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 211 conditions, 198 events. 18/198 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 116 event pairs, 0 based on Foata normal form. 0/179 useless extension candidates. Maximal degree in co-relation 162. Up to 3 conditions per place. [2023-08-30 21:25:35,739 INFO L82 GeneralOperation]: Start removeDead. Operand has 193 places, 201 transitions, 426 flow [2023-08-30 21:25:35,746 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 180 places, 188 transitions, 394 flow [2023-08-30 21:25:35,748 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 21:25:35,753 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 180 places, 188 transitions, 394 flow [2023-08-30 21:25:35,754 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 180 places, 188 transitions, 394 flow [2023-08-30 21:25:35,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 180 places, 188 transitions, 394 flow [2023-08-30 21:25:35,796 INFO L130 PetriNetUnfolder]: 18/188 cut-off events. [2023-08-30 21:25:35,796 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 21:25:35,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 201 conditions, 188 events. 18/188 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 115 event pairs, 0 based on Foata normal form. 0/170 useless extension candidates. Maximal degree in co-relation 162. Up to 3 conditions per place. [2023-08-30 21:25:35,800 INFO L119 LiptonReduction]: Number of co-enabled transitions 1456 [2023-08-30 21:25:41,275 INFO L134 LiptonReduction]: Checked pairs total: 2338 [2023-08-30 21:25:41,276 INFO L136 LiptonReduction]: Total number of compositions: 198 [2023-08-30 21:25:41,284 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 21:25:41,288 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;@13e7d0b7, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 21:25:41,288 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-30 21:25:41,296 INFO L130 PetriNetUnfolder]: 6/27 cut-off events. [2023-08-30 21:25:41,297 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 21:25:41,297 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 21:25:41,297 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 21:25:41,297 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 21:25:41,300 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 21:25:41,301 INFO L85 PathProgramCache]: Analyzing trace with hash -1992179177, now seen corresponding path program 1 times [2023-08-30 21:25:41,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 21:25:41,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707360560] [2023-08-30 21:25:41,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 21:25:41,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 21:25:41,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 21:25:41,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 21:25:41,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 21:25:41,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707360560] [2023-08-30 21:25:41,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707360560] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 21:25:41,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 21:25:41,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 21:25:41,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609913542] [2023-08-30 21:25:41,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 21:25:41,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-30 21:25:41,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 21:25:41,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-30 21:25:41,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-30 21:25:41,554 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 176 out of 399 [2023-08-30 21:25:41,558 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 28 transitions, 74 flow. Second operand has 2 states, 2 states have (on average 185.0) internal successors, (370), 2 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 21:25:41,558 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 21:25:41,558 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 176 of 399 [2023-08-30 21:25:41,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 21:25:41,658 INFO L130 PetriNetUnfolder]: 324/461 cut-off events. [2023-08-30 21:25:41,659 INFO L131 PetriNetUnfolder]: For 39/39 co-relation queries the response was YES. [2023-08-30 21:25:41,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 966 conditions, 461 events. 324/461 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1468 event pairs, 167 based on Foata normal form. 0/299 useless extension candidates. Maximal degree in co-relation 739. Up to 453 conditions per place. [2023-08-30 21:25:41,662 INFO L137 encePairwiseOnDemand]: 398/399 looper letters, 24 selfloop transitions, 0 changer transitions 0/27 dead transitions. [2023-08-30 21:25:41,662 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 27 transitions, 120 flow [2023-08-30 21:25:41,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-30 21:25:41,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-30 21:25:41,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 377 transitions. [2023-08-30 21:25:41,676 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4724310776942356 [2023-08-30 21:25:41,677 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 377 transitions. [2023-08-30 21:25:41,677 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 377 transitions. [2023-08-30 21:25:41,680 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 21:25:41,681 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 377 transitions. [2023-08-30 21:25:41,686 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 188.5) internal successors, (377), 2 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 21:25:41,689 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 399.0) internal successors, (1197), 3 states have internal predecessors, (1197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 21:25:41,689 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 399.0) internal successors, (1197), 3 states have internal predecessors, (1197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 21:25:41,691 INFO L175 Difference]: Start difference. First operand has 32 places, 28 transitions, 74 flow. Second operand 2 states and 377 transitions. [2023-08-30 21:25:41,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 27 transitions, 120 flow [2023-08-30 21:25:41,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 27 transitions, 108 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-30 21:25:41,695 INFO L231 Difference]: Finished difference. Result has 27 places, 27 transitions, 60 flow [2023-08-30 21:25:41,696 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=399, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=60, PETRI_PLACES=27, PETRI_TRANSITIONS=27} [2023-08-30 21:25:41,699 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, -5 predicate places. [2023-08-30 21:25:41,700 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 27 transitions, 60 flow [2023-08-30 21:25:41,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 185.0) internal successors, (370), 2 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 21:25:41,702 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 21:25:41,702 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 21:25:41,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 21:25:41,703 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 21:25:41,709 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 21:25:41,709 INFO L85 PathProgramCache]: Analyzing trace with hash -1504763739, now seen corresponding path program 1 times [2023-08-30 21:25:41,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 21:25:41,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448010284] [2023-08-30 21:25:41,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 21:25:41,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 21:25:41,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 21:25:41,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 21:25:41,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 21:25:41,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448010284] [2023-08-30 21:25:41,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448010284] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 21:25:41,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 21:25:41,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 21:25:41,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664892892] [2023-08-30 21:25:41,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 21:25:41,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 21:25:41,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 21:25:41,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 21:25:41,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 21:25:41,956 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 399 [2023-08-30 21:25:41,956 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 27 transitions, 60 flow. Second operand has 4 states, 4 states have (on average 170.75) internal successors, (683), 4 states have internal predecessors, (683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 21:25:41,957 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 21:25:41,957 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 399 [2023-08-30 21:25:41,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 21:25:42,054 INFO L130 PetriNetUnfolder]: 330/496 cut-off events. [2023-08-30 21:25:42,055 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-08-30 21:25:42,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1001 conditions, 496 events. 330/496 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1625 event pairs, 168 based on Foata normal form. 30/364 useless extension candidates. Maximal degree in co-relation 998. Up to 449 conditions per place. [2023-08-30 21:25:42,057 INFO L137 encePairwiseOnDemand]: 392/399 looper letters, 23 selfloop transitions, 2 changer transitions 21/49 dead transitions. [2023-08-30 21:25:42,057 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 49 transitions, 202 flow [2023-08-30 21:25:42,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 21:25:42,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 21:25:42,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 882 transitions. [2023-08-30 21:25:42,059 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4421052631578947 [2023-08-30 21:25:42,059 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 882 transitions. [2023-08-30 21:25:42,059 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 882 transitions. [2023-08-30 21:25:42,060 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 21:25:42,060 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 882 transitions. [2023-08-30 21:25:42,061 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 176.4) internal successors, (882), 5 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 21:25:42,064 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 399.0) internal successors, (2394), 6 states have internal predecessors, (2394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 21:25:42,065 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 399.0) internal successors, (2394), 6 states have internal predecessors, (2394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 21:25:42,065 INFO L175 Difference]: Start difference. First operand has 27 places, 27 transitions, 60 flow. Second operand 5 states and 882 transitions. [2023-08-30 21:25:42,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 49 transitions, 202 flow [2023-08-30 21:25:42,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 49 transitions, 202 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 21:25:42,066 INFO L231 Difference]: Finished difference. Result has 34 places, 28 transitions, 86 flow [2023-08-30 21:25:42,066 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=399, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=86, PETRI_PLACES=34, PETRI_TRANSITIONS=28} [2023-08-30 21:25:42,067 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 2 predicate places. [2023-08-30 21:25:42,067 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 28 transitions, 86 flow [2023-08-30 21:25:42,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 170.75) internal successors, (683), 4 states have internal predecessors, (683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 21:25:42,068 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 21:25:42,068 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] [2023-08-30 21:25:42,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 21:25:42,068 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 21:25:42,068 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 21:25:42,069 INFO L85 PathProgramCache]: Analyzing trace with hash 980333088, now seen corresponding path program 1 times [2023-08-30 21:25:42,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 21:25:42,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064477908] [2023-08-30 21:25:42,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 21:25:42,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 21:25:42,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 21:25:42,171 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 21:25:42,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 21:25:42,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064477908] [2023-08-30 21:25:42,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064477908] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 21:25:42,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 21:25:42,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 21:25:42,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116853590] [2023-08-30 21:25:42,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 21:25:42,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 21:25:42,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 21:25:42,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 21:25:42,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 21:25:42,213 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 399 [2023-08-30 21:25:42,214 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 28 transitions, 86 flow. Second operand has 4 states, 4 states have (on average 171.0) internal successors, (684), 4 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 21:25:42,214 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 21:25:42,214 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 399 [2023-08-30 21:25:42,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 21:25:42,315 INFO L130 PetriNetUnfolder]: 368/550 cut-off events. [2023-08-30 21:25:42,315 INFO L131 PetriNetUnfolder]: For 406/406 co-relation queries the response was YES. [2023-08-30 21:25:42,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1577 conditions, 550 events. 368/550 cut-off events. For 406/406 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1953 event pairs, 194 based on Foata normal form. 24/401 useless extension candidates. Maximal degree in co-relation 1570. Up to 450 conditions per place. [2023-08-30 21:25:42,320 INFO L137 encePairwiseOnDemand]: 392/399 looper letters, 24 selfloop transitions, 2 changer transitions 12/41 dead transitions. [2023-08-30 21:25:42,320 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 41 transitions, 206 flow [2023-08-30 21:25:42,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 21:25:42,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 21:25:42,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 705 transitions. [2023-08-30 21:25:42,324 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4417293233082707 [2023-08-30 21:25:42,324 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 705 transitions. [2023-08-30 21:25:42,324 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 705 transitions. [2023-08-30 21:25:42,324 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 21:25:42,325 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 705 transitions. [2023-08-30 21:25:42,326 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 176.25) internal successors, (705), 4 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 21:25:42,330 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 399.0) internal successors, (1995), 5 states have internal predecessors, (1995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 21:25:42,331 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 399.0) internal successors, (1995), 5 states have internal predecessors, (1995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 21:25:42,331 INFO L175 Difference]: Start difference. First operand has 34 places, 28 transitions, 86 flow. Second operand 4 states and 705 transitions. [2023-08-30 21:25:42,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 41 transitions, 206 flow [2023-08-30 21:25:42,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 41 transitions, 186 flow, removed 9 selfloop flow, removed 2 redundant places. [2023-08-30 21:25:42,333 INFO L231 Difference]: Finished difference. Result has 35 places, 29 transitions, 94 flow [2023-08-30 21:25:42,333 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=399, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=30, 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=94, PETRI_PLACES=35, PETRI_TRANSITIONS=29} [2023-08-30 21:25:42,333 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 3 predicate places. [2023-08-30 21:25:42,334 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 29 transitions, 94 flow [2023-08-30 21:25:42,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 171.0) internal successors, (684), 4 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 21:25:42,334 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 21:25:42,334 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 21:25:42,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 21:25:42,334 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 21:25:42,335 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 21:25:42,335 INFO L85 PathProgramCache]: Analyzing trace with hash 1036368596, now seen corresponding path program 1 times [2023-08-30 21:25:42,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 21:25:42,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935443630] [2023-08-30 21:25:42,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 21:25:42,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 21:25:42,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 21:25:42,428 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 21:25:42,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 21:25:42,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935443630] [2023-08-30 21:25:42,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935443630] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 21:25:42,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 21:25:42,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 21:25:42,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641278241] [2023-08-30 21:25:42,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 21:25:42,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 21:25:42,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 21:25:42,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 21:25:42,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 21:25:42,434 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 399 [2023-08-30 21:25:42,434 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 29 transitions, 94 flow. Second operand has 3 states, 3 states have (on average 179.0) internal successors, (537), 3 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 21:25:42,434 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 21:25:42,434 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 399 [2023-08-30 21:25:42,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 21:25:42,506 INFO L130 PetriNetUnfolder]: 340/485 cut-off events. [2023-08-30 21:25:42,506 INFO L131 PetriNetUnfolder]: For 138/138 co-relation queries the response was YES. [2023-08-30 21:25:42,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1366 conditions, 485 events. 340/485 cut-off events. For 138/138 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1440 event pairs, 48 based on Foata normal form. 10/328 useless extension candidates. Maximal degree in co-relation 1358. Up to 390 conditions per place. [2023-08-30 21:25:42,509 INFO L137 encePairwiseOnDemand]: 394/399 looper letters, 33 selfloop transitions, 3 changer transitions 0/39 dead transitions. [2023-08-30 21:25:42,509 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 39 transitions, 198 flow [2023-08-30 21:25:42,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 21:25:42,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 21:25:42,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 552 transitions. [2023-08-30 21:25:42,510 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46115288220551376 [2023-08-30 21:25:42,510 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 552 transitions. [2023-08-30 21:25:42,510 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 552 transitions. [2023-08-30 21:25:42,511 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 21:25:42,511 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 552 transitions. [2023-08-30 21:25:42,512 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 184.0) internal successors, (552), 3 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 21:25:42,513 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 399.0) internal successors, (1596), 4 states have internal predecessors, (1596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 21:25:42,514 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 399.0) internal successors, (1596), 4 states have internal predecessors, (1596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 21:25:42,514 INFO L175 Difference]: Start difference. First operand has 35 places, 29 transitions, 94 flow. Second operand 3 states and 552 transitions. [2023-08-30 21:25:42,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 39 transitions, 198 flow [2023-08-30 21:25:42,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 39 transitions, 194 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-30 21:25:42,515 INFO L231 Difference]: Finished difference. Result has 36 places, 31 transitions, 115 flow [2023-08-30 21:25:42,515 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=399, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=115, PETRI_PLACES=36, PETRI_TRANSITIONS=31} [2023-08-30 21:25:42,516 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 4 predicate places. [2023-08-30 21:25:42,516 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 31 transitions, 115 flow [2023-08-30 21:25:42,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 179.0) internal successors, (537), 3 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 21:25:42,516 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 21:25:42,516 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 21:25:42,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 21:25:42,517 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 21:25:42,517 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 21:25:42,517 INFO L85 PathProgramCache]: Analyzing trace with hash -128823418, now seen corresponding path program 2 times [2023-08-30 21:25:42,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 21:25:42,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007358201] [2023-08-30 21:25:42,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 21:25:42,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 21:25:42,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 21:25:42,818 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 21:25:42,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 21:25:42,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007358201] [2023-08-30 21:25:42,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007358201] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 21:25:42,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 21:25:42,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 21:25:42,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309241511] [2023-08-30 21:25:42,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 21:25:42,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 21:25:42,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 21:25:42,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 21:25:42,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-30 21:25:42,840 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 399 [2023-08-30 21:25:42,842 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 31 transitions, 115 flow. Second operand has 6 states, 6 states have (on average 172.66666666666666) internal successors, (1036), 6 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 21:25:42,842 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 21:25:42,842 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 399 [2023-08-30 21:25:42,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 21:25:43,015 INFO L130 PetriNetUnfolder]: 499/749 cut-off events. [2023-08-30 21:25:43,015 INFO L131 PetriNetUnfolder]: For 344/344 co-relation queries the response was YES. [2023-08-30 21:25:43,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2399 conditions, 749 events. 499/749 cut-off events. For 344/344 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2727 event pairs, 123 based on Foata normal form. 1/529 useless extension candidates. Maximal degree in co-relation 2390. Up to 302 conditions per place. [2023-08-30 21:25:43,019 INFO L137 encePairwiseOnDemand]: 392/399 looper letters, 65 selfloop transitions, 8 changer transitions 2/77 dead transitions. [2023-08-30 21:25:43,019 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 77 transitions, 449 flow [2023-08-30 21:25:43,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 21:25:43,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 21:25:43,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1082 transitions. [2023-08-30 21:25:43,021 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4519632414369256 [2023-08-30 21:25:43,021 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1082 transitions. [2023-08-30 21:25:43,022 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1082 transitions. [2023-08-30 21:25:43,022 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 21:25:43,022 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1082 transitions. [2023-08-30 21:25:43,024 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 180.33333333333334) internal successors, (1082), 6 states have internal predecessors, (1082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 21:25:43,027 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 399.0) internal successors, (2793), 7 states have internal predecessors, (2793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 21:25:43,028 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 399.0) internal successors, (2793), 7 states have internal predecessors, (2793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 21:25:43,028 INFO L175 Difference]: Start difference. First operand has 36 places, 31 transitions, 115 flow. Second operand 6 states and 1082 transitions. [2023-08-30 21:25:43,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 77 transitions, 449 flow [2023-08-30 21:25:43,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 77 transitions, 398 flow, removed 22 selfloop flow, removed 2 redundant places. [2023-08-30 21:25:43,033 INFO L231 Difference]: Finished difference. Result has 42 places, 37 transitions, 158 flow [2023-08-30 21:25:43,033 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=399, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=158, PETRI_PLACES=42, PETRI_TRANSITIONS=37} [2023-08-30 21:25:43,035 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 10 predicate places. [2023-08-30 21:25:43,035 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 37 transitions, 158 flow [2023-08-30 21:25:43,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 172.66666666666666) internal successors, (1036), 6 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 21:25:43,035 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 21:25:43,036 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 21:25:43,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 21:25:43,036 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 21:25:43,036 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 21:25:43,036 INFO L85 PathProgramCache]: Analyzing trace with hash -712620679, now seen corresponding path program 1 times [2023-08-30 21:25:43,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 21:25:43,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163730875] [2023-08-30 21:25:43,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 21:25:43,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 21:25:43,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 21:25:43,163 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 21:25:43,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 21:25:43,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163730875] [2023-08-30 21:25:43,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163730875] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 21:25:43,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [359368660] [2023-08-30 21:25:43,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 21:25:43,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 21:25:43,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 21:25:43,166 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 21:25:43,175 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-30 21:25:43,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 21:25:43,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 21:25:43,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 21:25:43,412 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 21:25:43,413 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 21:25:43,515 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 21:25:43,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [359368660] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 21:25:43,516 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 21:25:43,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-08-30 21:25:43,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622787749] [2023-08-30 21:25:43,516 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 21:25:43,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 21:25:43,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 21:25:43,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 21:25:43,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2023-08-30 21:25:43,656 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 399 [2023-08-30 21:25:43,658 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 37 transitions, 158 flow. Second operand has 12 states, 12 states have (on average 163.16666666666666) internal successors, (1958), 12 states have internal predecessors, (1958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 21:25:43,658 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 21:25:43,658 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 399 [2023-08-30 21:25:43,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 21:25:43,857 INFO L130 PetriNetUnfolder]: 681/1073 cut-off events. [2023-08-30 21:25:43,857 INFO L131 PetriNetUnfolder]: For 1230/1283 co-relation queries the response was YES. [2023-08-30 21:25:43,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3388 conditions, 1073 events. 681/1073 cut-off events. For 1230/1283 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 4573 event pairs, 291 based on Foata normal form. 137/1047 useless extension candidates. Maximal degree in co-relation 3377. Up to 645 conditions per place. [2023-08-30 21:25:43,862 INFO L137 encePairwiseOnDemand]: 393/399 looper letters, 59 selfloop transitions, 5 changer transitions 4/72 dead transitions. [2023-08-30 21:25:43,862 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 72 transitions, 432 flow [2023-08-30 21:25:43,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 21:25:43,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 21:25:43,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1016 transitions. [2023-08-30 21:25:43,864 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4243943191311612 [2023-08-30 21:25:43,864 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1016 transitions. [2023-08-30 21:25:43,864 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1016 transitions. [2023-08-30 21:25:43,865 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 21:25:43,865 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1016 transitions. [2023-08-30 21:25:43,866 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 169.33333333333334) internal successors, (1016), 6 states have internal predecessors, (1016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 21:25:43,868 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 399.0) internal successors, (2793), 7 states have internal predecessors, (2793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 21:25:43,869 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 399.0) internal successors, (2793), 7 states have internal predecessors, (2793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 21:25:43,869 INFO L175 Difference]: Start difference. First operand has 42 places, 37 transitions, 158 flow. Second operand 6 states and 1016 transitions. [2023-08-30 21:25:43,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 72 transitions, 432 flow [2023-08-30 21:25:43,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 72 transitions, 425 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-30 21:25:43,870 INFO L231 Difference]: Finished difference. Result has 49 places, 40 transitions, 206 flow [2023-08-30 21:25:43,871 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=399, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=206, PETRI_PLACES=49, PETRI_TRANSITIONS=40} [2023-08-30 21:25:43,871 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 17 predicate places. [2023-08-30 21:25:43,871 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 40 transitions, 206 flow [2023-08-30 21:25:43,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 163.16666666666666) internal successors, (1958), 12 states have internal predecessors, (1958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 21:25:43,872 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 21:25:43,872 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 21:25:43,883 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-30 21:25:44,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-08-30 21:25:44,077 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 21:25:44,077 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 21:25:44,077 INFO L85 PathProgramCache]: Analyzing trace with hash -1630668423, now seen corresponding path program 1 times [2023-08-30 21:25:44,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 21:25:44,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328021071] [2023-08-30 21:25:44,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 21:25:44,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 21:25:44,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 21:25:44,221 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 21:25:44,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 21:25:44,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328021071] [2023-08-30 21:25:44,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328021071] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 21:25:44,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 21:25:44,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 21:25:44,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256772238] [2023-08-30 21:25:44,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 21:25:44,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 21:25:44,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 21:25:44,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 21:25:44,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 21:25:44,226 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 399 [2023-08-30 21:25:44,227 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 40 transitions, 206 flow. Second operand has 4 states, 4 states have (on average 177.5) internal successors, (710), 4 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 21:25:44,227 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 21:25:44,227 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 399 [2023-08-30 21:25:44,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 21:25:44,398 INFO L130 PetriNetUnfolder]: 1125/1814 cut-off events. [2023-08-30 21:25:44,398 INFO L131 PetriNetUnfolder]: For 2644/2698 co-relation queries the response was YES. [2023-08-30 21:25:44,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6235 conditions, 1814 events. 1125/1814 cut-off events. For 2644/2698 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 9050 event pairs, 206 based on Foata normal form. 134/1655 useless extension candidates. Maximal degree in co-relation 6220. Up to 793 conditions per place. [2023-08-30 21:25:44,407 INFO L137 encePairwiseOnDemand]: 394/399 looper letters, 61 selfloop transitions, 12 changer transitions 0/77 dead transitions. [2023-08-30 21:25:44,407 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 77 transitions, 535 flow [2023-08-30 21:25:44,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 21:25:44,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 21:25:44,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 744 transitions. [2023-08-30 21:25:44,409 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46616541353383456 [2023-08-30 21:25:44,409 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 744 transitions. [2023-08-30 21:25:44,409 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 744 transitions. [2023-08-30 21:25:44,409 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 21:25:44,410 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 744 transitions. [2023-08-30 21:25:44,411 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 186.0) internal successors, (744), 4 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 21:25:44,412 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 399.0) internal successors, (1995), 5 states have internal predecessors, (1995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 21:25:44,413 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 399.0) internal successors, (1995), 5 states have internal predecessors, (1995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 21:25:44,413 INFO L175 Difference]: Start difference. First operand has 49 places, 40 transitions, 206 flow. Second operand 4 states and 744 transitions. [2023-08-30 21:25:44,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 77 transitions, 535 flow [2023-08-30 21:25:44,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 77 transitions, 511 flow, removed 10 selfloop flow, removed 2 redundant places. [2023-08-30 21:25:44,415 INFO L231 Difference]: Finished difference. Result has 52 places, 49 transitions, 300 flow [2023-08-30 21:25:44,415 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=399, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=300, PETRI_PLACES=52, PETRI_TRANSITIONS=49} [2023-08-30 21:25:44,416 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 20 predicate places. [2023-08-30 21:25:44,416 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 49 transitions, 300 flow [2023-08-30 21:25:44,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 177.5) internal successors, (710), 4 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 21:25:44,416 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 21:25:44,416 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 21:25:44,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 21:25:44,417 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 21:25:44,417 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 21:25:44,417 INFO L85 PathProgramCache]: Analyzing trace with hash 883003992, now seen corresponding path program 2 times [2023-08-30 21:25:44,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 21:25:44,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829877451] [2023-08-30 21:25:44,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 21:25:44,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 21:25:44,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 21:25:44,961 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 21:25:44,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 21:25:44,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829877451] [2023-08-30 21:25:44,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829877451] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 21:25:44,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1648075153] [2023-08-30 21:25:44,962 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 21:25:44,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 21:25:44,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 21:25:44,963 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 21:25:44,965 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-30 21:25:45,074 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 21:25:45,075 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 21:25:45,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 29 conjunts are in the unsatisfiable core [2023-08-30 21:25:45,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 21:25:45,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 21:25:45,185 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-08-30 21:25:45,223 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 21:25:45,223 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 21:25:45,261 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_255 (Array Int Int))) (not (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_255) c_~q1~0.base) (+ (* c_~q1_front~0 4) c_~q1~0.offset)) 0))) is different from false [2023-08-30 21:25:45,293 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 21:25:45,293 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 45 treesize of output 37 [2023-08-30 21:25:45,296 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 24 treesize of output 18 [2023-08-30 21:25:45,356 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-30 21:25:45,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1648075153] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 21:25:45,356 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 21:25:45,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 6] total 19 [2023-08-30 21:25:45,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943194165] [2023-08-30 21:25:45,357 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 21:25:45,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-30 21:25:45,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 21:25:45,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-30 21:25:45,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=296, Unknown=1, NotChecked=34, Total=380 [2023-08-30 21:25:45,379 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 399 [2023-08-30 21:25:45,381 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 49 transitions, 300 flow. Second operand has 20 states, 20 states have (on average 127.8) internal successors, (2556), 20 states have internal predecessors, (2556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 21:25:45,381 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 21:25:45,381 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 399 [2023-08-30 21:25:45,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 21:25:45,951 INFO L130 PetriNetUnfolder]: 1143/1887 cut-off events. [2023-08-30 21:25:45,951 INFO L131 PetriNetUnfolder]: For 2931/2956 co-relation queries the response was YES. [2023-08-30 21:25:45,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7535 conditions, 1887 events. 1143/1887 cut-off events. For 2931/2956 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 9079 event pairs, 160 based on Foata normal form. 33/1622 useless extension candidates. Maximal degree in co-relation 7518. Up to 1129 conditions per place. [2023-08-30 21:25:45,961 INFO L137 encePairwiseOnDemand]: 390/399 looper letters, 101 selfloop transitions, 23 changer transitions 0/126 dead transitions. [2023-08-30 21:25:45,961 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 126 transitions, 913 flow [2023-08-30 21:25:45,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-30 21:25:45,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-30 21:25:45,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1732 transitions. [2023-08-30 21:25:45,966 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33391170233275497 [2023-08-30 21:25:45,966 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1732 transitions. [2023-08-30 21:25:45,966 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1732 transitions. [2023-08-30 21:25:45,967 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 21:25:45,967 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1732 transitions. [2023-08-30 21:25:45,969 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 133.23076923076923) internal successors, (1732), 13 states have internal predecessors, (1732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 21:25:45,974 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 399.0) internal successors, (5586), 14 states have internal predecessors, (5586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 21:25:45,976 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 399.0) internal successors, (5586), 14 states have internal predecessors, (5586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 21:25:45,976 INFO L175 Difference]: Start difference. First operand has 52 places, 49 transitions, 300 flow. Second operand 13 states and 1732 transitions. [2023-08-30 21:25:45,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 126 transitions, 913 flow [2023-08-30 21:25:45,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 126 transitions, 841 flow, removed 30 selfloop flow, removed 2 redundant places. [2023-08-30 21:25:45,981 INFO L231 Difference]: Finished difference. Result has 68 places, 58 transitions, 405 flow [2023-08-30 21:25:45,981 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=399, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=405, PETRI_PLACES=68, PETRI_TRANSITIONS=58} [2023-08-30 21:25:45,983 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 36 predicate places. [2023-08-30 21:25:45,983 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 58 transitions, 405 flow [2023-08-30 21:25:45,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 127.8) internal successors, (2556), 20 states have internal predecessors, (2556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 21:25:45,984 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 21:25:45,984 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 21:25:45,989 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-30 21:25:46,189 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,SelfDestructingSolverStorable7 [2023-08-30 21:25:46,190 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 21:25:46,190 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 21:25:46,190 INFO L85 PathProgramCache]: Analyzing trace with hash 1891154340, now seen corresponding path program 3 times [2023-08-30 21:25:46,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 21:25:46,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116349146] [2023-08-30 21:25:46,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 21:25:46,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 21:25:46,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 21:25:46,930 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 21:25:46,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 21:25:46,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116349146] [2023-08-30 21:25:46,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116349146] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 21:25:46,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1580536846] [2023-08-30 21:25:46,930 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 21:25:46,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 21:25:46,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 21:25:46,932 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 21:25:46,933 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-30 21:25:47,050 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-30 21:25:47,050 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 21:25:47,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 28 conjunts are in the unsatisfiable core [2023-08-30 21:25:47,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 21:25:47,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 21:25:47,243 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-08-30 21:25:47,288 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 21:25:47,288 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 21:25:47,387 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 21:25:47,387 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 45 treesize of output 37 [2023-08-30 21:25:47,390 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 24 treesize of output 18 [2023-08-30 21:25:47,579 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 21:25:47,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1580536846] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 21:25:47,579 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 21:25:47,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 26 [2023-08-30 21:25:47,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124770922] [2023-08-30 21:25:47,580 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 21:25:47,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-08-30 21:25:47,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 21:25:47,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-08-30 21:25:47,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=599, Unknown=4, NotChecked=0, Total=702 [2023-08-30 21:25:48,739 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 399 [2023-08-30 21:25:48,742 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 58 transitions, 405 flow. Second operand has 27 states, 27 states have (on average 139.44444444444446) internal successors, (3765), 27 states have internal predecessors, (3765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 21:25:48,742 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 21:25:48,742 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 399 [2023-08-30 21:25:48,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 21:25:51,137 WARN L839 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_312 (Array Int Int))) (not (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_312) c_~q1~0.base) (+ (* c_~q1_front~0 4) c_~q1~0.offset)) 0))) (= |c_thread2Thread1of1ForFork1_~j~0#1| 1)) is different from false [2023-08-30 21:25:51,816 INFO L130 PetriNetUnfolder]: 5890/9005 cut-off events. [2023-08-30 21:25:51,817 INFO L131 PetriNetUnfolder]: For 23201/23201 co-relation queries the response was YES. [2023-08-30 21:25:51,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37545 conditions, 9005 events. 5890/9005 cut-off events. For 23201/23201 co-relation queries the response was YES. Maximal size of possible extension queue 422. Compared 52498 event pairs, 209 based on Foata normal form. 618/8530 useless extension candidates. Maximal degree in co-relation 37524. Up to 3355 conditions per place. [2023-08-30 21:25:51,883 INFO L137 encePairwiseOnDemand]: 382/399 looper letters, 409 selfloop transitions, 169 changer transitions 0/579 dead transitions. [2023-08-30 21:25:51,883 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 579 transitions, 4928 flow [2023-08-30 21:25:51,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2023-08-30 21:25:51,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2023-08-30 21:25:51,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 6288 transitions. [2023-08-30 21:25:51,896 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36649763944745584 [2023-08-30 21:25:51,896 INFO L72 ComplementDD]: Start complementDD. Operand 43 states and 6288 transitions. [2023-08-30 21:25:51,896 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 6288 transitions. [2023-08-30 21:25:51,899 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 21:25:51,899 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 43 states and 6288 transitions. [2023-08-30 21:25:51,910 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 44 states, 43 states have (on average 146.2325581395349) internal successors, (6288), 43 states have internal predecessors, (6288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 21:25:51,935 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 44 states, 44 states have (on average 399.0) internal successors, (17556), 44 states have internal predecessors, (17556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 21:25:51,939 INFO L81 ComplementDD]: Finished complementDD. Result has 44 states, 44 states have (on average 399.0) internal successors, (17556), 44 states have internal predecessors, (17556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 21:25:51,940 INFO L175 Difference]: Start difference. First operand has 68 places, 58 transitions, 405 flow. Second operand 43 states and 6288 transitions. [2023-08-30 21:25:51,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 579 transitions, 4928 flow [2023-08-30 21:25:51,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 579 transitions, 4783 flow, removed 70 selfloop flow, removed 2 redundant places. [2023-08-30 21:25:51,961 INFO L231 Difference]: Finished difference. Result has 139 places, 239 transitions, 2590 flow [2023-08-30 21:25:51,961 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=399, PETRI_DIFFERENCE_MINUEND_FLOW=374, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=2590, PETRI_PLACES=139, PETRI_TRANSITIONS=239} [2023-08-30 21:25:51,962 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 107 predicate places. [2023-08-30 21:25:51,962 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 239 transitions, 2590 flow [2023-08-30 21:25:51,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 139.44444444444446) internal successors, (3765), 27 states have internal predecessors, (3765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 21:25:51,963 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 21:25:51,963 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 21:25:51,969 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-30 21:25:52,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 21:25:52,169 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 21:25:52,169 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 21:25:52,169 INFO L85 PathProgramCache]: Analyzing trace with hash 1670701830, now seen corresponding path program 4 times [2023-08-30 21:25:52,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 21:25:52,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772871542] [2023-08-30 21:25:52,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 21:25:52,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 21:25:52,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 21:25:52,862 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 21:25:52,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 21:25:52,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772871542] [2023-08-30 21:25:52,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772871542] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 21:25:52,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [370283037] [2023-08-30 21:25:52,863 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 21:25:52,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 21:25:52,863 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 21:25:52,864 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 21:25:52,866 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-30 21:25:52,958 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 21:25:52,959 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 21:25:52,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 28 conjunts are in the unsatisfiable core [2023-08-30 21:25:52,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 21:25:53,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 21:25:53,135 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-08-30 21:25:53,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 21:25:53,196 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-08-30 21:25:53,293 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 21:25:53,294 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 21:25:53,439 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 21:25:53,440 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 85 treesize of output 77 [2023-08-30 21:25:53,445 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 64 treesize of output 52 [2023-08-30 21:25:53,447 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 52 treesize of output 46 [2023-08-30 21:25:53,638 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 21:25:53,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [370283037] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 21:25:53,638 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 21:25:53,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 28 [2023-08-30 21:25:53,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355099132] [2023-08-30 21:25:53,638 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 21:25:53,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-08-30 21:25:53,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 21:25:53,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-08-30 21:25:53,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=690, Unknown=0, NotChecked=0, Total=812 [2023-08-30 21:25:54,555 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 399 [2023-08-30 21:25:54,556 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 239 transitions, 2590 flow. Second operand has 29 states, 29 states have (on average 125.10344827586206) internal successors, (3628), 29 states have internal predecessors, (3628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 21:25:54,556 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 21:25:54,556 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 399 [2023-08-30 21:25:54,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 21:25:59,172 INFO L130 PetriNetUnfolder]: 11050/16930 cut-off events. [2023-08-30 21:25:59,172 INFO L131 PetriNetUnfolder]: For 274268/274268 co-relation queries the response was YES. [2023-08-30 21:25:59,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107572 conditions, 16930 events. 11050/16930 cut-off events. For 274268/274268 co-relation queries the response was YES. Maximal size of possible extension queue 828. Compared 110495 event pairs, 841 based on Foata normal form. 150/15520 useless extension candidates. Maximal degree in co-relation 107520. Up to 6486 conditions per place. [2023-08-30 21:25:59,304 INFO L137 encePairwiseOnDemand]: 385/399 looper letters, 628 selfloop transitions, 395 changer transitions 4/1028 dead transitions. [2023-08-30 21:25:59,305 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 1028 transitions, 12876 flow [2023-08-30 21:25:59,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-08-30 21:25:59,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2023-08-30 21:25:59,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 5809 transitions. [2023-08-30 21:25:59,313 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3308840282524493 [2023-08-30 21:25:59,313 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 5809 transitions. [2023-08-30 21:25:59,313 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 5809 transitions. [2023-08-30 21:25:59,314 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 21:25:59,314 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 5809 transitions. [2023-08-30 21:25:59,322 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 132.02272727272728) internal successors, (5809), 44 states have internal predecessors, (5809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 21:25:59,335 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 399.0) internal successors, (17955), 45 states have internal predecessors, (17955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 21:25:59,337 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 399.0) internal successors, (17955), 45 states have internal predecessors, (17955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 21:25:59,337 INFO L175 Difference]: Start difference. First operand has 139 places, 239 transitions, 2590 flow. Second operand 44 states and 5809 transitions. [2023-08-30 21:25:59,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 1028 transitions, 12876 flow [2023-08-30 21:26:00,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 1028 transitions, 11304 flow, removed 775 selfloop flow, removed 8 redundant places. [2023-08-30 21:26:00,142 INFO L231 Difference]: Finished difference. Result has 197 places, 537 transitions, 6517 flow [2023-08-30 21:26:00,143 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=399, PETRI_DIFFERENCE_MINUEND_FLOW=2126, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=6517, PETRI_PLACES=197, PETRI_TRANSITIONS=537} [2023-08-30 21:26:00,143 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 165 predicate places. [2023-08-30 21:26:00,143 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 537 transitions, 6517 flow [2023-08-30 21:26:00,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 125.10344827586206) internal successors, (3628), 29 states have internal predecessors, (3628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 21:26:00,144 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 21:26:00,144 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 21:26:00,151 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-30 21:26:00,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 21:26:00,352 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 21:26:00,352 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 21:26:00,352 INFO L85 PathProgramCache]: Analyzing trace with hash 309327165, now seen corresponding path program 5 times [2023-08-30 21:26:00,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 21:26:00,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143415563] [2023-08-30 21:26:00,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 21:26:00,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 21:26:00,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 21:26:01,126 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 21:26:01,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 21:26:01,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143415563] [2023-08-30 21:26:01,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143415563] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 21:26:01,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [348751989] [2023-08-30 21:26:01,127 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-30 21:26:01,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 21:26:01,127 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 21:26:01,128 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 21:26:01,132 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-30 21:26:01,230 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-30 21:26:01,230 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 21:26:01,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 22 conjunts are in the unsatisfiable core [2023-08-30 21:26:01,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 21:26:01,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 21:26:01,323 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-08-30 21:26:01,351 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-30 21:26:01,351 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 21:26:01,371 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_431 (Array Int Int))) (not (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_431) c_~q1~0.base) (+ (* c_~q1_front~0 4) c_~q1~0.offset)) 0))) is different from false [2023-08-30 21:26:01,379 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 21:26:01,380 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 45 treesize of output 37 [2023-08-30 21:26:01,382 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 24 treesize of output 18 [2023-08-30 21:26:01,438 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-30 21:26:01,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [348751989] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 21:26:01,439 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 21:26:01,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 6] total 20 [2023-08-30 21:26:01,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369405780] [2023-08-30 21:26:01,439 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 21:26:01,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-08-30 21:26:01,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 21:26:01,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-08-30 21:26:01,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=329, Unknown=1, NotChecked=36, Total=420 [2023-08-30 21:26:01,530 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 399 [2023-08-30 21:26:01,532 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 537 transitions, 6517 flow. Second operand has 21 states, 21 states have (on average 127.57142857142857) internal successors, (2679), 21 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 21:26:01,532 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 21:26:01,532 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 399 [2023-08-30 21:26:01,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 21:26:04,849 INFO L130 PetriNetUnfolder]: 11491/17636 cut-off events. [2023-08-30 21:26:04,850 INFO L131 PetriNetUnfolder]: For 354943/354965 co-relation queries the response was YES. [2023-08-30 21:26:04,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124591 conditions, 17636 events. 11491/17636 cut-off events. For 354943/354965 co-relation queries the response was YES. Maximal size of possible extension queue 854. Compared 115660 event pairs, 2085 based on Foata normal form. 34/16986 useless extension candidates. Maximal degree in co-relation 124520. Up to 9266 conditions per place. [2023-08-30 21:26:05,002 INFO L137 encePairwiseOnDemand]: 390/399 looper letters, 441 selfloop transitions, 295 changer transitions 0/740 dead transitions. [2023-08-30 21:26:05,002 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 740 transitions, 10051 flow [2023-08-30 21:26:05,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-30 21:26:05,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-30 21:26:05,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1857 transitions. [2023-08-30 21:26:05,009 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.332438238453276 [2023-08-30 21:26:05,009 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1857 transitions. [2023-08-30 21:26:05,010 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1857 transitions. [2023-08-30 21:26:05,011 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 21:26:05,011 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1857 transitions. [2023-08-30 21:26:05,013 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 132.64285714285714) internal successors, (1857), 14 states have internal predecessors, (1857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 21:26:05,020 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 399.0) internal successors, (5985), 15 states have internal predecessors, (5985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 21:26:05,020 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 399.0) internal successors, (5985), 15 states have internal predecessors, (5985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 21:26:05,020 INFO L175 Difference]: Start difference. First operand has 197 places, 537 transitions, 6517 flow. Second operand 14 states and 1857 transitions. [2023-08-30 21:26:05,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 740 transitions, 10051 flow [2023-08-30 21:26:07,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 740 transitions, 9774 flow, removed 115 selfloop flow, removed 13 redundant places. [2023-08-30 21:26:07,023 INFO L231 Difference]: Finished difference. Result has 201 places, 566 transitions, 7640 flow [2023-08-30 21:26:07,024 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=399, PETRI_DIFFERENCE_MINUEND_FLOW=6288, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=537, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=266, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=7640, PETRI_PLACES=201, PETRI_TRANSITIONS=566} [2023-08-30 21:26:07,024 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 169 predicate places. [2023-08-30 21:26:07,024 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 566 transitions, 7640 flow [2023-08-30 21:26:07,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 127.57142857142857) internal successors, (2679), 21 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 21:26:07,025 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 21:26:07,025 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 21:26:07,030 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-30 21:26:07,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-08-30 21:26:07,230 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 21:26:07,230 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 21:26:07,230 INFO L85 PathProgramCache]: Analyzing trace with hash -947555157, now seen corresponding path program 6 times [2023-08-30 21:26:07,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 21:26:07,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330305532] [2023-08-30 21:26:07,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 21:26:07,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 21:26:07,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 21:26:08,116 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 21:26:08,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 21:26:08,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330305532] [2023-08-30 21:26:08,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330305532] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 21:26:08,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1519714446] [2023-08-30 21:26:08,118 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-30 21:26:08,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 21:26:08,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 21:26:08,119 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 21:26:08,121 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-30 21:26:08,374 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-30 21:26:08,374 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 21:26:08,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 24 conjunts are in the unsatisfiable core [2023-08-30 21:26:08,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 21:26:08,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 21:26:08,506 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-08-30 21:26:08,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 21:26:08,540 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-08-30 21:26:08,572 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-30 21:26:08,573 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 21:26:08,601 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_493 (Array Int Int))) (not (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_493) c_~q1~0.base) (+ (* c_~q1_front~0 4) c_~q1~0.offset)) 0))) is different from false [2023-08-30 21:26:08,643 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 21:26:08,643 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 85 treesize of output 77 [2023-08-30 21:26:08,646 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 64 treesize of output 52 [2023-08-30 21:26:08,649 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 52 treesize of output 46 [2023-08-30 21:26:08,738 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 1 not checked. [2023-08-30 21:26:08,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1519714446] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 21:26:08,738 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 21:26:08,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 7] total 24 [2023-08-30 21:26:08,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872302269] [2023-08-30 21:26:08,739 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 21:26:08,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-08-30 21:26:08,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 21:26:08,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-08-30 21:26:08,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=483, Unknown=1, NotChecked=44, Total=600 [2023-08-30 21:26:08,836 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 399 [2023-08-30 21:26:08,837 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 566 transitions, 7640 flow. Second operand has 25 states, 25 states have (on average 124.36) internal successors, (3109), 25 states have internal predecessors, (3109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 21:26:08,837 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 21:26:08,837 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 399 [2023-08-30 21:26:08,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 21:26:12,671 INFO L130 PetriNetUnfolder]: 11572/17779 cut-off events. [2023-08-30 21:26:12,671 INFO L131 PetriNetUnfolder]: For 395400/395422 co-relation queries the response was YES. [2023-08-30 21:26:12,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130741 conditions, 17779 events. 11572/17779 cut-off events. For 395400/395422 co-relation queries the response was YES. Maximal size of possible extension queue 820. Compared 116515 event pairs, 2062 based on Foata normal form. 26/17222 useless extension candidates. Maximal degree in co-relation 130666. Up to 8462 conditions per place. [2023-08-30 21:26:12,829 INFO L137 encePairwiseOnDemand]: 391/399 looper letters, 430 selfloop transitions, 311 changer transitions 1/746 dead transitions. [2023-08-30 21:26:12,829 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 746 transitions, 10690 flow [2023-08-30 21:26:12,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-30 21:26:12,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-30 21:26:12,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1812 transitions. [2023-08-30 21:26:12,831 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32438238453276047 [2023-08-30 21:26:12,831 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1812 transitions. [2023-08-30 21:26:12,832 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1812 transitions. [2023-08-30 21:26:12,833 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 21:26:12,833 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1812 transitions. [2023-08-30 21:26:12,834 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 129.42857142857142) internal successors, (1812), 14 states have internal predecessors, (1812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 21:26:12,837 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 399.0) internal successors, (5985), 15 states have internal predecessors, (5985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 21:26:12,838 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 399.0) internal successors, (5985), 15 states have internal predecessors, (5985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 21:26:12,838 INFO L175 Difference]: Start difference. First operand has 201 places, 566 transitions, 7640 flow. Second operand 14 states and 1812 transitions. [2023-08-30 21:26:12,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 746 transitions, 10690 flow [2023-08-30 21:26:14,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 746 transitions, 10669 flow, removed 4 selfloop flow, removed 4 redundant places. [2023-08-30 21:26:14,605 INFO L231 Difference]: Finished difference. Result has 212 places, 584 transitions, 8674 flow [2023-08-30 21:26:14,605 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=399, PETRI_DIFFERENCE_MINUEND_FLOW=7619, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=566, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=293, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=8674, PETRI_PLACES=212, PETRI_TRANSITIONS=584} [2023-08-30 21:26:14,605 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 180 predicate places. [2023-08-30 21:26:14,606 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 584 transitions, 8674 flow [2023-08-30 21:26:14,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 124.36) internal successors, (3109), 25 states have internal predecessors, (3109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 21:26:14,606 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 21:26:14,606 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 21:26:14,611 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-30 21:26:14,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 21:26:14,809 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 21:26:14,809 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 21:26:14,809 INFO L85 PathProgramCache]: Analyzing trace with hash 858752648, now seen corresponding path program 1 times [2023-08-30 21:26:14,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 21:26:14,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669826238] [2023-08-30 21:26:14,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 21:26:14,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 21:26:14,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 21:26:14,932 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 21:26:14,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 21:26:14,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669826238] [2023-08-30 21:26:14,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669826238] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 21:26:14,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [83542207] [2023-08-30 21:26:14,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 21:26:14,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 21:26:14,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 21:26:14,934 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 21:26:14,936 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-30 21:26:15,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 21:26:15,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 21:26:15,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 21:26:15,089 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 21:26:15,089 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 21:26:15,137 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 21:26:15,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [83542207] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 21:26:15,138 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 21:26:15,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-30 21:26:15,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331538227] [2023-08-30 21:26:15,139 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 21:26:15,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 21:26:15,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 21:26:15,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 21:26:15,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-08-30 21:26:15,270 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 399 [2023-08-30 21:26:15,271 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 584 transitions, 8674 flow. Second operand has 12 states, 12 states have (on average 163.16666666666666) internal successors, (1958), 12 states have internal predecessors, (1958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 21:26:15,271 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 21:26:15,271 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 399 [2023-08-30 21:26:15,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 21:26:19,673 INFO L130 PetriNetUnfolder]: 14606/22798 cut-off events. [2023-08-30 21:26:19,673 INFO L131 PetriNetUnfolder]: For 583848/583882 co-relation queries the response was YES. [2023-08-30 21:26:19,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 173126 conditions, 22798 events. 14606/22798 cut-off events. For 583848/583882 co-relation queries the response was YES. Maximal size of possible extension queue 1050. Compared 158929 event pairs, 4994 based on Foata normal form. 718/22695 useless extension candidates. Maximal degree in co-relation 173049. Up to 16805 conditions per place. [2023-08-30 21:26:19,893 INFO L137 encePairwiseOnDemand]: 394/399 looper letters, 569 selfloop transitions, 10 changer transitions 433/1017 dead transitions. [2023-08-30 21:26:19,893 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 1017 transitions, 16467 flow [2023-08-30 21:26:19,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 21:26:19,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 21:26:19,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1011 transitions. [2023-08-30 21:26:19,894 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4223057644110276 [2023-08-30 21:26:19,895 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1011 transitions. [2023-08-30 21:26:19,895 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1011 transitions. [2023-08-30 21:26:19,895 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 21:26:19,895 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1011 transitions. [2023-08-30 21:26:19,896 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 168.5) internal successors, (1011), 6 states have internal predecessors, (1011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 21:26:19,898 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 399.0) internal successors, (2793), 7 states have internal predecessors, (2793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 21:26:19,898 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 399.0) internal successors, (2793), 7 states have internal predecessors, (2793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 21:26:19,898 INFO L175 Difference]: Start difference. First operand has 212 places, 584 transitions, 8674 flow. Second operand 6 states and 1011 transitions. [2023-08-30 21:26:19,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 1017 transitions, 16467 flow [2023-08-30 21:26:22,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 1017 transitions, 16067 flow, removed 8 selfloop flow, removed 11 redundant places. [2023-08-30 21:26:22,990 INFO L231 Difference]: Finished difference. Result has 209 places, 584 transitions, 8618 flow [2023-08-30 21:26:22,990 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=399, PETRI_DIFFERENCE_MINUEND_FLOW=8463, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=584, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=574, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=8618, PETRI_PLACES=209, PETRI_TRANSITIONS=584} [2023-08-30 21:26:22,991 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 177 predicate places. [2023-08-30 21:26:22,991 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 584 transitions, 8618 flow [2023-08-30 21:26:22,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 163.16666666666666) internal successors, (1958), 12 states have internal predecessors, (1958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 21:26:22,991 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 21:26:22,991 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 21:26:22,996 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-30 21:26:23,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 21:26:23,193 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 21:26:23,193 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 21:26:23,193 INFO L85 PathProgramCache]: Analyzing trace with hash -173494766, now seen corresponding path program 2 times [2023-08-30 21:26:23,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 21:26:23,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135980690] [2023-08-30 21:26:23,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 21:26:23,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 21:26:23,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 21:26:23,346 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-30 21:26:23,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 21:26:23,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135980690] [2023-08-30 21:26:23,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135980690] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 21:26:23,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [463465021] [2023-08-30 21:26:23,347 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 21:26:23,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 21:26:23,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 21:26:23,348 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 21:26:23,349 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-30 21:26:23,653 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 21:26:23,654 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 21:26:23,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 21:26:23,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 21:26:23,681 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-30 21:26:23,682 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 21:26:23,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [463465021] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 21:26:23,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 21:26:23,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2023-08-30 21:26:23,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804296593] [2023-08-30 21:26:23,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 21:26:23,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 21:26:23,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 21:26:23,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 21:26:23,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-08-30 21:26:23,688 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 399 [2023-08-30 21:26:23,688 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 584 transitions, 8618 flow. Second operand has 4 states, 4 states have (on average 178.0) internal successors, (712), 4 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 21:26:23,688 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 21:26:23,688 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 399 [2023-08-30 21:26:23,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 21:26:27,244 INFO L130 PetriNetUnfolder]: 12192/18715 cut-off events. [2023-08-30 21:26:27,244 INFO L131 PetriNetUnfolder]: For 493871/493889 co-relation queries the response was YES. [2023-08-30 21:26:27,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 151374 conditions, 18715 events. 12192/18715 cut-off events. For 493871/493889 co-relation queries the response was YES. Maximal size of possible extension queue 917. Compared 124434 event pairs, 2589 based on Foata normal form. 202/18219 useless extension candidates. Maximal degree in co-relation 151297. Up to 15394 conditions per place. [2023-08-30 21:26:27,412 INFO L137 encePairwiseOnDemand]: 395/399 looper letters, 568 selfloop transitions, 106 changer transitions 21/699 dead transitions. [2023-08-30 21:26:27,412 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 699 transitions, 12032 flow [2023-08-30 21:26:27,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 21:26:27,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 21:26:27,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 748 transitions. [2023-08-30 21:26:27,413 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46867167919799496 [2023-08-30 21:26:27,414 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 748 transitions. [2023-08-30 21:26:27,414 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 748 transitions. [2023-08-30 21:26:27,414 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 21:26:27,414 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 748 transitions. [2023-08-30 21:26:27,415 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 187.0) internal successors, (748), 4 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 21:26:27,416 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 399.0) internal successors, (1995), 5 states have internal predecessors, (1995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 21:26:27,416 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 399.0) internal successors, (1995), 5 states have internal predecessors, (1995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 21:26:27,416 INFO L175 Difference]: Start difference. First operand has 209 places, 584 transitions, 8618 flow. Second operand 4 states and 748 transitions. [2023-08-30 21:26:27,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 699 transitions, 12032 flow [2023-08-30 21:26:29,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 699 transitions, 11803 flow, removed 103 selfloop flow, removed 5 redundant places. [2023-08-30 21:26:29,627 INFO L231 Difference]: Finished difference. Result has 207 places, 604 transitions, 9274 flow [2023-08-30 21:26:29,627 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=399, PETRI_DIFFERENCE_MINUEND_FLOW=8412, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=581, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=479, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=9274, PETRI_PLACES=207, PETRI_TRANSITIONS=604} [2023-08-30 21:26:29,627 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 175 predicate places. [2023-08-30 21:26:29,627 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 604 transitions, 9274 flow [2023-08-30 21:26:29,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 178.0) internal successors, (712), 4 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 21:26:29,628 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 21:26:29,628 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 21:26:29,633 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-30 21:26:29,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-08-30 21:26:29,828 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 21:26:29,828 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 21:26:29,829 INFO L85 PathProgramCache]: Analyzing trace with hash 237154215, now seen corresponding path program 1 times [2023-08-30 21:26:29,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 21:26:29,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331942703] [2023-08-30 21:26:29,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 21:26:29,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 21:26:29,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 21:26:30,183 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-30 21:26:30,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 21:26:30,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331942703] [2023-08-30 21:26:30,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331942703] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 21:26:30,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [363898438] [2023-08-30 21:26:30,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 21:26:30,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 21:26:30,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 21:26:30,198 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 21:26:30,199 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-30 21:26:30,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 21:26:30,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-30 21:26:30,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 21:26:30,529 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-30 21:26:30,530 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 21:26:30,589 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-08-30 21:26:30,589 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 24 treesize of output 11 [2023-08-30 21:26:30,724 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-30 21:26:30,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [363898438] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 21:26:30,724 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 21:26:30,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 22 [2023-08-30 21:26:30,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629720361] [2023-08-30 21:26:30,724 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 21:26:30,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-08-30 21:26:30,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 21:26:30,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-08-30 21:26:30,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=388, Unknown=0, NotChecked=0, Total=506 [2023-08-30 21:26:31,250 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 399 [2023-08-30 21:26:31,255 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 604 transitions, 9274 flow. Second operand has 23 states, 23 states have (on average 148.95652173913044) internal successors, (3426), 23 states have internal predecessors, (3426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 21:26:31,256 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 21:26:31,256 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 399 [2023-08-30 21:26:31,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 21:26:43,984 INFO L130 PetriNetUnfolder]: 41569/63142 cut-off events. [2023-08-30 21:26:43,984 INFO L131 PetriNetUnfolder]: For 1729762/1729810 co-relation queries the response was YES. [2023-08-30 21:26:44,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 528669 conditions, 63142 events. 41569/63142 cut-off events. For 1729762/1729810 co-relation queries the response was YES. Maximal size of possible extension queue 2596. Compared 478154 event pairs, 3001 based on Foata normal form. 2414/63321 useless extension candidates. Maximal degree in co-relation 528593. Up to 23739 conditions per place. [2023-08-30 21:26:45,139 INFO L137 encePairwiseOnDemand]: 390/399 looper letters, 2637 selfloop transitions, 530 changer transitions 5/3175 dead transitions. [2023-08-30 21:26:45,139 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 3175 transitions, 54031 flow [2023-08-30 21:26:45,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-08-30 21:26:45,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-08-30 21:26:45,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 3573 transitions. [2023-08-30 21:26:45,142 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38934292252370056 [2023-08-30 21:26:45,142 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 3573 transitions. [2023-08-30 21:26:45,143 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 3573 transitions. [2023-08-30 21:26:45,143 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 21:26:45,143 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 3573 transitions. [2023-08-30 21:26:45,146 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 155.34782608695653) internal successors, (3573), 23 states have internal predecessors, (3573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 21:26:45,151 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 399.0) internal successors, (9576), 24 states have internal predecessors, (9576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 21:26:45,151 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 399.0) internal successors, (9576), 24 states have internal predecessors, (9576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 21:26:45,151 INFO L175 Difference]: Start difference. First operand has 207 places, 604 transitions, 9274 flow. Second operand 23 states and 3573 transitions. [2023-08-30 21:26:45,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 3175 transitions, 54031 flow [2023-08-30 21:27:02,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 3175 transitions, 51989 flow, removed 402 selfloop flow, removed 5 redundant places. [2023-08-30 21:27:02,145 INFO L231 Difference]: Finished difference. Result has 222 places, 1172 transitions, 22369 flow [2023-08-30 21:27:02,146 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=399, PETRI_DIFFERENCE_MINUEND_FLOW=8957, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=604, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=142, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=447, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=22369, PETRI_PLACES=222, PETRI_TRANSITIONS=1172} [2023-08-30 21:27:02,146 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 190 predicate places. [2023-08-30 21:27:02,146 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 1172 transitions, 22369 flow [2023-08-30 21:27:02,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 148.95652173913044) internal successors, (3426), 23 states have internal predecessors, (3426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 21:27:02,147 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 21:27:02,147 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 21:27:02,154 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-30 21:27:02,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-30 21:27:02,348 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 21:27:02,349 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 21:27:02,349 INFO L85 PathProgramCache]: Analyzing trace with hash 1098212869, now seen corresponding path program 2 times [2023-08-30 21:27:02,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 21:27:02,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858450026] [2023-08-30 21:27:02,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 21:27:02,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 21:27:02,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 21:27:03,407 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 21:27:03,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 21:27:03,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858450026] [2023-08-30 21:27:03,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858450026] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 21:27:03,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1878406958] [2023-08-30 21:27:03,408 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 21:27:03,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 21:27:03,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 21:27:03,408 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 21:27:03,411 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-30 21:27:03,549 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 21:27:03,549 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 21:27:03,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-30 21:27:03,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 21:27:03,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 21:27:03,676 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2023-08-30 21:27:03,702 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-30 21:27:03,702 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 21:27:03,745 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 21:27:03,745 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 44 treesize of output 36 [2023-08-30 21:27:03,747 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 24 treesize of output 18 [2023-08-30 21:27:03,836 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-30 21:27:03,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1878406958] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 21:27:03,836 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 21:27:03,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 7, 6] total 25 [2023-08-30 21:27:03,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931001841] [2023-08-30 21:27:03,836 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 21:27:03,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-08-30 21:27:03,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 21:27:03,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-08-30 21:27:03,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=567, Unknown=8, NotChecked=0, Total=650 [2023-08-30 21:27:04,597 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 399 [2023-08-30 21:27:04,598 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 1172 transitions, 22369 flow. Second operand has 26 states, 26 states have (on average 117.53846153846153) internal successors, (3056), 26 states have internal predecessors, (3056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 21:27:04,599 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 21:27:04,599 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 399 [2023-08-30 21:27:04,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 21:27:19,251 INFO L130 PetriNetUnfolder]: 37589/56669 cut-off events. [2023-08-30 21:27:19,251 INFO L131 PetriNetUnfolder]: For 1705222/1705258 co-relation queries the response was YES. [2023-08-30 21:27:19,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 498900 conditions, 56669 events. 37589/56669 cut-off events. For 1705222/1705258 co-relation queries the response was YES. Maximal size of possible extension queue 2001. Compared 410301 event pairs, 4984 based on Foata normal form. 2216/56920 useless extension candidates. Maximal degree in co-relation 498821. Up to 34133 conditions per place. [2023-08-30 21:27:20,159 INFO L137 encePairwiseOnDemand]: 385/399 looper letters, 1375 selfloop transitions, 300 changer transitions 2/1680 dead transitions. [2023-08-30 21:27:20,160 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 1680 transitions, 34471 flow [2023-08-30 21:27:20,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-30 21:27:20,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-30 21:27:20,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2072 transitions. [2023-08-30 21:27:20,163 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30546955624355004 [2023-08-30 21:27:20,163 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2072 transitions. [2023-08-30 21:27:20,163 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2072 transitions. [2023-08-30 21:27:20,163 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 21:27:20,163 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2072 transitions. [2023-08-30 21:27:20,165 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 121.88235294117646) internal successors, (2072), 17 states have internal predecessors, (2072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 21:27:20,169 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 399.0) internal successors, (7182), 18 states have internal predecessors, (7182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 21:27:20,169 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 399.0) internal successors, (7182), 18 states have internal predecessors, (7182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 21:27:20,170 INFO L175 Difference]: Start difference. First operand has 222 places, 1172 transitions, 22369 flow. Second operand 17 states and 2072 transitions. [2023-08-30 21:27:20,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 1680 transitions, 34471 flow [2023-08-30 21:27:40,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 1680 transitions, 32821 flow, removed 800 selfloop flow, removed 4 redundant places. [2023-08-30 21:27:40,940 INFO L231 Difference]: Finished difference. Result has 242 places, 1238 transitions, 23586 flow [2023-08-30 21:27:40,940 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=399, PETRI_DIFFERENCE_MINUEND_FLOW=21138, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=232, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=896, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=23586, PETRI_PLACES=242, PETRI_TRANSITIONS=1238} [2023-08-30 21:27:40,940 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 210 predicate places. [2023-08-30 21:27:40,941 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 1238 transitions, 23586 flow [2023-08-30 21:27:40,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 117.53846153846153) internal successors, (3056), 26 states have internal predecessors, (3056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 21:27:40,941 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 21:27:40,941 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 21:27:40,946 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-08-30 21:27:41,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-08-30 21:27:41,142 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 21:27:41,142 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 21:27:41,142 INFO L85 PathProgramCache]: Analyzing trace with hash -283939794, now seen corresponding path program 1 times [2023-08-30 21:27:41,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 21:27:41,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703972308] [2023-08-30 21:27:41,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 21:27:41,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 21:27:41,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 21:27:42,294 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 21:27:42,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 21:27:42,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703972308] [2023-08-30 21:27:42,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703972308] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 21:27:42,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [12656116] [2023-08-30 21:27:42,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 21:27:42,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 21:27:42,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 21:27:42,295 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 21:27:42,295 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-30 21:27:42,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 21:27:42,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 59 conjunts are in the unsatisfiable core [2023-08-30 21:27:42,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 21:27:42,930 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 21:27:42,930 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 21:27:43,204 INFO L321 Elim1Store]: treesize reduction 19, result has 79.6 percent of original size [2023-08-30 21:27:43,204 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 62 treesize of output 95 [2023-08-30 21:27:43,612 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 21:27:43,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [12656116] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 21:27:43,612 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 21:27:43,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13, 12] total 40 [2023-08-30 21:27:43,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552435689] [2023-08-30 21:27:43,612 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 21:27:43,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2023-08-30 21:27:43,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 21:27:43,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2023-08-30 21:27:43,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=1549, Unknown=0, NotChecked=0, Total=1722 [2023-08-30 21:27:46,769 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 399 [2023-08-30 21:27:46,771 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 1238 transitions, 23586 flow. Second operand has 42 states, 42 states have (on average 133.0) internal successors, (5586), 42 states have internal predecessors, (5586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 21:27:46,771 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 21:27:46,771 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 399 [2023-08-30 21:27:46,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 21:28:14,289 INFO L130 PetriNetUnfolder]: 58363/88437 cut-off events. [2023-08-30 21:28:14,289 INFO L131 PetriNetUnfolder]: For 2297484/2297484 co-relation queries the response was YES. [2023-08-30 21:28:15,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 752336 conditions, 88437 events. 58363/88437 cut-off events. For 2297484/2297484 co-relation queries the response was YES. Maximal size of possible extension queue 3182. Compared 688371 event pairs, 4966 based on Foata normal form. 59/83622 useless extension candidates. Maximal degree in co-relation 752249. Up to 46073 conditions per place. [2023-08-30 21:28:16,137 INFO L137 encePairwiseOnDemand]: 383/399 looper letters, 1338 selfloop transitions, 983 changer transitions 130/2452 dead transitions. [2023-08-30 21:28:16,137 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 2452 transitions, 50344 flow [2023-08-30 21:28:16,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-08-30 21:28:16,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2023-08-30 21:28:16,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 6819 transitions. [2023-08-30 21:28:16,144 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3487801135491791 [2023-08-30 21:28:16,144 INFO L72 ComplementDD]: Start complementDD. Operand 49 states and 6819 transitions. [2023-08-30 21:28:16,144 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 6819 transitions. [2023-08-30 21:28:16,145 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 21:28:16,146 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 49 states and 6819 transitions. [2023-08-30 21:28:16,152 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 50 states, 49 states have (on average 139.16326530612244) internal successors, (6819), 49 states have internal predecessors, (6819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 21:28:16,162 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 50 states, 50 states have (on average 399.0) internal successors, (19950), 50 states have internal predecessors, (19950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 21:28:16,163 INFO L81 ComplementDD]: Finished complementDD. Result has 50 states, 50 states have (on average 399.0) internal successors, (19950), 50 states have internal predecessors, (19950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 21:28:16,163 INFO L175 Difference]: Start difference. First operand has 242 places, 1238 transitions, 23586 flow. Second operand 49 states and 6819 transitions. [2023-08-30 21:28:16,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 2452 transitions, 50344 flow [2023-08-30 21:28:51,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 2452 transitions, 49254 flow, removed 133 selfloop flow, removed 6 redundant places. [2023-08-30 21:28:51,759 INFO L231 Difference]: Finished difference. Result has 309 places, 1918 transitions, 41527 flow [2023-08-30 21:28:51,760 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=399, PETRI_DIFFERENCE_MINUEND_FLOW=23057, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=374, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=397, PETRI_DIFFERENCE_SUBTRAHEND_STATES=49, PETRI_FLOW=41527, PETRI_PLACES=309, PETRI_TRANSITIONS=1918} [2023-08-30 21:28:51,760 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 277 predicate places. [2023-08-30 21:28:51,761 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 1918 transitions, 41527 flow [2023-08-30 21:28:51,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 133.0) internal successors, (5586), 42 states have internal predecessors, (5586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 21:28:51,761 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 21:28:51,761 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 21:28:51,769 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-08-30 21:28:51,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-08-30 21:28:51,965 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 21:28:51,966 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 21:28:51,966 INFO L85 PathProgramCache]: Analyzing trace with hash 1162292086, now seen corresponding path program 2 times [2023-08-30 21:28:51,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 21:28:51,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194298550] [2023-08-30 21:28:51,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 21:28:51,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 21:28:52,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 21:28:53,401 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 21:28:53,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 21:28:53,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194298550] [2023-08-30 21:28:53,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194298550] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 21:28:53,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2117817236] [2023-08-30 21:28:53,402 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 21:28:53,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 21:28:53,402 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 21:28:53,402 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 21:28:53,403 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-30 21:28:53,549 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 21:28:53,549 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 21:28:53,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 74 conjunts are in the unsatisfiable core [2023-08-30 21:28:53,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 21:28:54,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 21:28:54,015 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-08-30 21:28:54,498 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 21:28:54,499 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 21:28:54,973 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 21:28:54,973 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 188 treesize of output 224 [2023-08-30 21:28:55,001 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 21:28:55,001 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 128 treesize of output 132 [2023-08-30 21:28:56,377 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 21:28:56,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2117817236] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 21:28:56,377 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 21:28:56,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 16] total 48 [2023-08-30 21:28:56,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985236507] [2023-08-30 21:28:56,377 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 21:28:56,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2023-08-30 21:28:56,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 21:28:56,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2023-08-30 21:28:56,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=230, Invalid=2219, Unknown=1, NotChecked=0, Total=2450 [2023-08-30 21:28:57,401 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 399 [2023-08-30 21:28:57,404 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 1918 transitions, 41527 flow. Second operand has 50 states, 50 states have (on average 106.66) internal successors, (5333), 50 states have internal predecessors, (5333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 21:28:57,404 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 21:28:57,404 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 399 [2023-08-30 21:28:57,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 21:29:12,554 WARN L222 SmtUtils]: Spent 6.75s on a formula simplification. DAG size of input: 92 DAG size of output: 92 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-30 21:29:52,558 INFO L130 PetriNetUnfolder]: 59837/91027 cut-off events. [2023-08-30 21:29:52,558 INFO L131 PetriNetUnfolder]: For 2720144/2720144 co-relation queries the response was YES. [2023-08-30 21:29:54,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 850941 conditions, 91027 events. 59837/91027 cut-off events. For 2720144/2720144 co-relation queries the response was YES. Maximal size of possible extension queue 3223. Compared 714965 event pairs, 4952 based on Foata normal form. 37/86130 useless extension candidates. Maximal degree in co-relation 850830. Up to 48318 conditions per place. [2023-08-30 21:29:55,088 INFO L137 encePairwiseOnDemand]: 383/399 looper letters, 1537 selfloop transitions, 1105 changer transitions 97/2740 dead transitions. [2023-08-30 21:29:55,089 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 2740 transitions, 60744 flow [2023-08-30 21:29:55,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2023-08-30 21:29:55,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2023-08-30 21:29:55,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 6863 transitions. [2023-08-30 21:29:55,096 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.28197543037922673 [2023-08-30 21:29:55,096 INFO L72 ComplementDD]: Start complementDD. Operand 61 states and 6863 transitions. [2023-08-30 21:29:55,096 INFO L73 IsDeterministic]: Start isDeterministic. Operand 61 states and 6863 transitions. [2023-08-30 21:29:55,097 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 21:29:55,097 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 61 states and 6863 transitions. [2023-08-30 21:29:55,103 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 62 states, 61 states have (on average 112.50819672131148) internal successors, (6863), 61 states have internal predecessors, (6863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 21:29:55,114 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 62 states, 62 states have (on average 399.0) internal successors, (24738), 62 states have internal predecessors, (24738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 21:29:55,115 INFO L81 ComplementDD]: Finished complementDD. Result has 62 states, 62 states have (on average 399.0) internal successors, (24738), 62 states have internal predecessors, (24738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 21:29:55,116 INFO L175 Difference]: Start difference. First operand has 309 places, 1918 transitions, 41527 flow. Second operand 61 states and 6863 transitions. [2023-08-30 21:29:55,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 2740 transitions, 60744 flow [2023-08-30 21:30:39,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 2740 transitions, 59099 flow, removed 791 selfloop flow, removed 17 redundant places. [2023-08-30 21:30:39,788 INFO L231 Difference]: Finished difference. Result has 380 places, 2169 transitions, 48394 flow [2023-08-30 21:30:39,789 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=399, PETRI_DIFFERENCE_MINUEND_FLOW=40467, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1918, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=901, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=949, PETRI_DIFFERENCE_SUBTRAHEND_STATES=61, PETRI_FLOW=48394, PETRI_PLACES=380, PETRI_TRANSITIONS=2169} [2023-08-30 21:30:39,790 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 348 predicate places. [2023-08-30 21:30:39,790 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 2169 transitions, 48394 flow [2023-08-30 21:30:39,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 106.66) internal successors, (5333), 50 states have internal predecessors, (5333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 21:30:39,791 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 21:30:39,791 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 21:30:39,797 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-08-30 21:30:39,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-08-30 21:30:39,996 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 21:30:39,996 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 21:30:39,997 INFO L85 PathProgramCache]: Analyzing trace with hash 510345502, now seen corresponding path program 3 times [2023-08-30 21:30:39,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 21:30:39,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715642522] [2023-08-30 21:30:39,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 21:30:39,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 21:30:40,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 21:30:41,701 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 21:30:41,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 21:30:41,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715642522] [2023-08-30 21:30:41,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715642522] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 21:30:41,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1577903041] [2023-08-30 21:30:41,701 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 21:30:41,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 21:30:41,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 21:30:41,702 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 21:30:41,703 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-30 21:30:41,830 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-30 21:30:41,831 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 21:30:41,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 73 conjunts are in the unsatisfiable core [2023-08-30 21:30:41,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 21:30:41,985 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-08-30 21:30:42,029 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-08-30 21:30:42,083 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-30 21:30:42,136 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-30 21:30:44,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 21:30:44,499 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2023-08-30 21:30:44,500 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 30 treesize of output 39 [2023-08-30 21:30:44,697 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 21:30:44,697 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 21:30:44,857 WARN L839 $PredicateComparison]: unable to prove that (or (< c_~q2_back~0 0) (let ((.cse0 (+ c_~q2~0.offset (* c_~q2_front~0 4)))) (and (forall ((v_ArrVal_910 (Array Int Int))) (<= c_~N~0 (+ c_~t~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_910) c_~q2~0.base) .cse0)))) (forall ((v_ArrVal_910 (Array Int Int))) (< (+ c_~t~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_910) c_~q2~0.base) .cse0)) (+ c_~N~0 1))))) (<= c_~n2~0 c_~q2_back~0)) is different from false [2023-08-30 21:30:45,067 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse0 (select (select |c_#memory_int| c_~q1~0.base) (+ (* c_~q1_front~0 4) c_~q1~0.offset)))) (or (not (= (select (select |c_#memory_int| c_~q2~0.base) (+ (* c_~q2_back~0 4) c_~q2~0.offset)) .cse0)) (< c_~q2_back~0 0) (let ((.cse1 (+ c_~q2~0.offset (* c_~q2_front~0 4)))) (and (forall ((v_ArrVal_910 (Array Int Int))) (<= c_~N~0 (+ c_~t~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_910) c_~q2~0.base) .cse1)))) (forall ((v_ArrVal_910 (Array Int Int))) (< (+ c_~t~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_910) c_~q2~0.base) .cse1)) (+ c_~N~0 1))))) (< c_~n2~0 (+ c_~q2_back~0 2)) (< |c_thread1Thread1of1ForFork0_~i~0#1| c_~N~0) (= .cse0 0))) is different from false [2023-08-30 21:30:45,851 INFO L321 Elim1Store]: treesize reduction 32, result has 64.8 percent of original size [2023-08-30 21:30:45,851 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 371 treesize of output 249 [2023-08-30 21:30:46,037 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 21:30:46,038 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 7285 treesize of output 7109 [2023-08-30 21:30:46,313 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 21:30:46,314 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 1869 treesize of output 1884 [2023-08-30 21:30:46,418 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 21:30:46,419 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 1803 treesize of output 1752 [2023-08-30 21:30:46,484 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1671 treesize of output 1647 [2023-08-30 21:30:46,628 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 21:30:46,629 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 1663 treesize of output 1695 [2023-08-30 21:30:46,753 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 21:30:46,754 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 1557 treesize of output 1386 [2023-08-30 21:30:46,886 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 21:30:46,886 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 1305 treesize of output 1260 [2023-08-30 21:30:46,976 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 1179 treesize of output 1155 [2023-08-30 21:38:35,248 WARN L222 SmtUtils]: Spent 8.85s on a formula simplification. DAG size of input: 856 DAG size of output: 989 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) Killed by 15