./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-divine/barrier_2t.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 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 ../sv-benchmarks/c/pthread-divine/barrier_2t.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f16bd48636db1837ea8e0ca595ad8610f40d584c5526c4d4feced86ef6fdf308 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 21:29:52,265 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 21:29:52,274 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 21:29:52,323 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 21:29:52,323 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 21:29:52,325 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 21:29:52,327 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 21:29:52,330 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 21:29:52,332 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 21:29:52,336 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 21:29:52,337 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 21:29:52,339 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 21:29:52,340 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 21:29:52,342 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 21:29:52,343 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 21:29:52,347 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 21:29:52,349 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 21:29:52,350 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 21:29:52,352 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 21:29:52,358 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 21:29:52,360 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 21:29:52,362 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 21:29:52,363 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 21:29:52,364 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 21:29:52,365 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 21:29:52,372 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 21:29:52,372 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 21:29:52,373 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 21:29:52,374 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 21:29:52,374 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 21:29:52,375 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 21:29:52,376 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 21:29:52,377 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 21:29:52,378 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 21:29:52,379 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 21:29:52,379 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 21:29:52,380 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 21:29:52,380 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 21:29:52,380 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 21:29:52,381 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 21:29:52,382 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 21:29:52,384 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 21:29:52,386 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 21:29:52,421 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 21:29:52,421 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 21:29:52,422 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 21:29:52,422 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 21:29:52,423 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 21:29:52,423 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 21:29:52,425 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 21:29:52,425 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 21:29:52,425 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 21:29:52,426 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 21:29:52,426 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 21:29:52,426 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 21:29:52,426 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 21:29:52,427 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 21:29:52,427 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 21:29:52,427 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 21:29:52,427 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 21:29:52,427 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 21:29:52,428 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 21:29:52,429 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 21:29:52,429 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 21:29:52,429 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 21:29:52,429 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 21:29:52,429 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 21:29:52,430 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 21:29:52,430 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 21:29:52,430 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 21:29:52,430 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 21:29:52,431 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 21:29:52,431 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 21:29:52,431 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 21:29:52,431 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 21:29:52,431 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 21:29:52,432 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f16bd48636db1837ea8e0ca595ad8610f40d584c5526c4d4feced86ef6fdf308 [2022-07-22 21:29:52,674 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 21:29:52,698 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 21:29:52,701 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 21:29:52,702 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 21:29:52,703 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 21:29:52,704 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-divine/barrier_2t.i [2022-07-22 21:29:52,775 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05e53f0cc/353c0621a6994fb380ae98701ee0de33/FLAGa303422b6 [2022-07-22 21:29:53,259 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 21:29:53,260 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/barrier_2t.i [2022-07-22 21:29:53,281 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05e53f0cc/353c0621a6994fb380ae98701ee0de33/FLAGa303422b6 [2022-07-22 21:29:53,629 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05e53f0cc/353c0621a6994fb380ae98701ee0de33 [2022-07-22 21:29:53,631 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 21:29:53,633 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 21:29:53,636 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 21:29:53,636 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 21:29:53,638 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 21:29:53,639 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 09:29:53" (1/1) ... [2022-07-22 21:29:53,640 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@482e66d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:29:53, skipping insertion in model container [2022-07-22 21:29:53,640 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 09:29:53" (1/1) ... [2022-07-22 21:29:53,646 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 21:29:53,699 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 21:29:53,879 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-07-22 21:29:54,063 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/barrier_2t.i[30484,30497] [2022-07-22 21:29:54,095 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/barrier_2t.i[31858,31871] [2022-07-22 21:29:54,096 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/barrier_2t.i[31909,31922] [2022-07-22 21:29:54,099 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/barrier_2t.i[32058,32071] [2022-07-22 21:29:54,100 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/barrier_2t.i[32135,32148] [2022-07-22 21:29:54,101 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/barrier_2t.i[32182,32195] [2022-07-22 21:29:54,105 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/barrier_2t.i[32291,32304] [2022-07-22 21:29:54,108 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/barrier_2t.i[32410,32423] [2022-07-22 21:29:54,111 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/barrier_2t.i[32458,32471] [2022-07-22 21:29:54,113 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/barrier_2t.i[32535,32548] [2022-07-22 21:29:54,115 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/barrier_2t.i[32661,32674] [2022-07-22 21:29:54,125 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/barrier_2t.i[33244,33257] [2022-07-22 21:29:54,126 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/barrier_2t.i[33321,33334] [2022-07-22 21:29:54,127 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 21:29:54,138 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 21:29:54,153 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-07-22 21:29:54,191 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/barrier_2t.i[30484,30497] [2022-07-22 21:29:54,200 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/barrier_2t.i[31858,31871] [2022-07-22 21:29:54,203 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/barrier_2t.i[31909,31922] [2022-07-22 21:29:54,205 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/barrier_2t.i[32058,32071] [2022-07-22 21:29:54,207 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/barrier_2t.i[32135,32148] [2022-07-22 21:29:54,208 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/barrier_2t.i[32182,32195] [2022-07-22 21:29:54,211 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/barrier_2t.i[32291,32304] [2022-07-22 21:29:54,215 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/barrier_2t.i[32410,32423] [2022-07-22 21:29:54,216 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/barrier_2t.i[32458,32471] [2022-07-22 21:29:54,219 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/barrier_2t.i[32535,32548] [2022-07-22 21:29:54,222 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/barrier_2t.i[32661,32674] [2022-07-22 21:29:54,236 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/barrier_2t.i[33244,33257] [2022-07-22 21:29:54,238 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/barrier_2t.i[33321,33334] [2022-07-22 21:29:54,240 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 21:29:54,276 INFO L208 MainTranslator]: Completed translation [2022-07-22 21:29:54,277 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:29:54 WrapperNode [2022-07-22 21:29:54,277 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 21:29:54,278 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 21:29:54,278 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 21:29:54,279 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 21:29:54,285 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:29:54" (1/1) ... [2022-07-22 21:29:54,317 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:29:54" (1/1) ... [2022-07-22 21:29:54,357 INFO L137 Inliner]: procedures = 174, calls = 78, calls flagged for inlining = 6, calls inlined = 8, statements flattened = 521 [2022-07-22 21:29:54,358 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 21:29:54,359 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 21:29:54,359 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 21:29:54,359 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 21:29:54,372 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:29:54" (1/1) ... [2022-07-22 21:29:54,372 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:29:54" (1/1) ... [2022-07-22 21:29:54,387 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:29:54" (1/1) ... [2022-07-22 21:29:54,388 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:29:54" (1/1) ... [2022-07-22 21:29:54,417 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:29:54" (1/1) ... [2022-07-22 21:29:54,433 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:29:54" (1/1) ... [2022-07-22 21:29:54,436 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:29:54" (1/1) ... [2022-07-22 21:29:54,441 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 21:29:54,442 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 21:29:54,442 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 21:29:54,443 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 21:29:54,444 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:29:54" (1/1) ... [2022-07-22 21:29:54,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 21:29:54,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 21:29:54,483 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) [2022-07-22 21:29:54,507 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 [2022-07-22 21:29:54,527 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-22 21:29:54,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-22 21:29:54,528 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-07-22 21:29:54,528 INFO L130 BoogieDeclarations]: Found specification of procedure worker_fn [2022-07-22 21:29:54,528 INFO L138 BoogieDeclarations]: Found implementation of procedure worker_fn [2022-07-22 21:29:54,528 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 21:29:54,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-22 21:29:54,528 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-22 21:29:54,528 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-22 21:29:54,528 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-22 21:29:54,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 21:29:54,528 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 21:29:54,529 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 21:29:54,530 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-22 21:29:54,644 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 21:29:54,646 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 21:29:55,326 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 21:29:55,342 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 21:29:55,342 INFO L299 CfgBuilder]: Removed 20 assume(true) statements. [2022-07-22 21:29:55,346 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 09:29:55 BoogieIcfgContainer [2022-07-22 21:29:55,346 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 21:29:55,348 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 21:29:55,348 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 21:29:55,351 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 21:29:55,352 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 09:29:53" (1/3) ... [2022-07-22 21:29:55,353 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52a51d8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 09:29:55, skipping insertion in model container [2022-07-22 21:29:55,353 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:29:54" (2/3) ... [2022-07-22 21:29:55,353 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52a51d8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 09:29:55, skipping insertion in model container [2022-07-22 21:29:55,353 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 09:29:55" (3/3) ... [2022-07-22 21:29:55,355 INFO L111 eAbstractionObserver]: Analyzing ICFG barrier_2t.i [2022-07-22 21:29:55,361 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-22 21:29:55,369 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 21:29:55,369 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 23 error locations. [2022-07-22 21:29:55,370 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-22 21:29:55,490 INFO L135 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-07-22 21:29:55,542 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 514 places, 581 transitions, 1170 flow [2022-07-22 21:29:55,834 INFO L129 PetriNetUnfolder]: 106/858 cut-off events. [2022-07-22 21:29:55,834 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-07-22 21:29:55,854 INFO L84 FinitePrefix]: Finished finitePrefix Result has 864 conditions, 858 events. 106/858 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 3081 event pairs, 0 based on Foata normal form. 0/714 useless extension candidates. Maximal degree in co-relation 512. Up to 4 conditions per place. [2022-07-22 21:29:55,854 INFO L82 GeneralOperation]: Start removeDead. Operand has 514 places, 581 transitions, 1170 flow [2022-07-22 21:29:55,872 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 514 places, 581 transitions, 1170 flow [2022-07-22 21:29:55,886 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 21:29:55,892 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=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@63f63a9b, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6031a808 [2022-07-22 21:29:55,893 INFO L358 AbstractCegarLoop]: Starting to check reachability of 34 error locations. [2022-07-22 21:29:55,899 INFO L129 PetriNetUnfolder]: 3/53 cut-off events. [2022-07-22 21:29:55,900 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-22 21:29:55,900 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:29:55,901 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:29:55,901 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2022-07-22 21:29:55,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:29:55,906 INFO L85 PathProgramCache]: Analyzing trace with hash 682126804, now seen corresponding path program 1 times [2022-07-22 21:29:55,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:29:55,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483547974] [2022-07-22 21:29:55,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:29:55,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:29:56,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:29:56,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:29:56,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:29:56,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483547974] [2022-07-22 21:29:56,118 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483547974] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:29:56,118 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:29:56,118 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 21:29:56,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071654262] [2022-07-22 21:29:56,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:29:56,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-22 21:29:56,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:29:56,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-22 21:29:56,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-22 21:29:56,162 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 536 out of 581 [2022-07-22 21:29:56,167 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 514 places, 581 transitions, 1170 flow. Second operand has 2 states, 2 states have (on average 536.5) internal successors, (1073), 2 states have internal predecessors, (1073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:29:56,167 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:29:56,167 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 536 of 581 [2022-07-22 21:29:56,169 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:29:56,375 INFO L129 PetriNetUnfolder]: 40/792 cut-off events. [2022-07-22 21:29:56,375 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-07-22 21:29:56,382 INFO L84 FinitePrefix]: Finished finitePrefix Result has 801 conditions, 792 events. 40/792 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 2911 event pairs, 0 based on Foata normal form. 66/780 useless extension candidates. Maximal degree in co-relation 473. Up to 4 conditions per place. [2022-07-22 21:29:56,388 INFO L132 encePairwiseOnDemand]: 538/581 looper letters, 2 selfloop transitions, 0 changer transitions 0/538 dead transitions. [2022-07-22 21:29:56,388 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 515 places, 538 transitions, 1088 flow [2022-07-22 21:29:56,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-22 21:29:56,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-07-22 21:29:56,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 1117 transitions. [2022-07-22 21:29:56,404 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9612736660929432 [2022-07-22 21:29:56,405 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 1117 transitions. [2022-07-22 21:29:56,406 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 1117 transitions. [2022-07-22 21:29:56,408 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:29:56,411 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 1117 transitions. [2022-07-22 21:29:56,416 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 558.5) internal successors, (1117), 2 states have internal predecessors, (1117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:29:56,423 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 581.0) internal successors, (1743), 3 states have internal predecessors, (1743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:29:56,425 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 581.0) internal successors, (1743), 3 states have internal predecessors, (1743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:29:56,427 INFO L186 Difference]: Start difference. First operand has 514 places, 581 transitions, 1170 flow. Second operand 2 states and 1117 transitions. [2022-07-22 21:29:56,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 515 places, 538 transitions, 1088 flow [2022-07-22 21:29:56,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 515 places, 538 transitions, 1088 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-22 21:29:56,443 INFO L242 Difference]: Finished difference. Result has 515 places, 538 transitions, 1084 flow [2022-07-22 21:29:56,445 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=581, PETRI_DIFFERENCE_MINUEND_FLOW=1084, PETRI_DIFFERENCE_MINUEND_PLACES=514, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=538, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=538, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=1084, PETRI_PLACES=515, PETRI_TRANSITIONS=538} [2022-07-22 21:29:56,449 INFO L279 CegarLoopForPetriNet]: 514 programPoint places, 1 predicate places. [2022-07-22 21:29:56,449 INFO L495 AbstractCegarLoop]: Abstraction has has 515 places, 538 transitions, 1084 flow [2022-07-22 21:29:56,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 536.5) internal successors, (1073), 2 states have internal predecessors, (1073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:29:56,450 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:29:56,450 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:29:56,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 21:29:56,451 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2022-07-22 21:29:56,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:29:56,452 INFO L85 PathProgramCache]: Analyzing trace with hash -1870030157, now seen corresponding path program 1 times [2022-07-22 21:29:56,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:29:56,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600986540] [2022-07-22 21:29:56,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:29:56,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:29:56,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:29:56,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:29:56,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:29:56,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600986540] [2022-07-22 21:29:56,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600986540] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:29:56,523 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:29:56,523 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 21:29:56,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463492070] [2022-07-22 21:29:56,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:29:56,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 21:29:56,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:29:56,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 21:29:56,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 21:29:56,528 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 527 out of 581 [2022-07-22 21:29:56,530 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 515 places, 538 transitions, 1084 flow. Second operand has 3 states, 3 states have (on average 528.0) internal successors, (1584), 3 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:29:56,530 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:29:56,530 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 527 of 581 [2022-07-22 21:29:56,530 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:29:56,715 INFO L129 PetriNetUnfolder]: 40/798 cut-off events. [2022-07-22 21:29:56,716 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-07-22 21:29:56,725 INFO L84 FinitePrefix]: Finished finitePrefix Result has 823 conditions, 798 events. 40/798 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 2909 event pairs, 0 based on Foata normal form. 0/720 useless extension candidates. Maximal degree in co-relation 819. Up to 12 conditions per place. [2022-07-22 21:29:56,730 INFO L132 encePairwiseOnDemand]: 578/581 looper letters, 15 selfloop transitions, 2 changer transitions 0/544 dead transitions. [2022-07-22 21:29:56,731 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 517 places, 544 transitions, 1130 flow [2022-07-22 21:29:56,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 21:29:56,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-22 21:29:56,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1599 transitions. [2022-07-22 21:29:56,735 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9173838209982789 [2022-07-22 21:29:56,735 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1599 transitions. [2022-07-22 21:29:56,735 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1599 transitions. [2022-07-22 21:29:56,736 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:29:56,736 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1599 transitions. [2022-07-22 21:29:56,740 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 533.0) internal successors, (1599), 3 states have internal predecessors, (1599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:29:56,743 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 581.0) internal successors, (2324), 4 states have internal predecessors, (2324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:29:56,744 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 581.0) internal successors, (2324), 4 states have internal predecessors, (2324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:29:56,744 INFO L186 Difference]: Start difference. First operand has 515 places, 538 transitions, 1084 flow. Second operand 3 states and 1599 transitions. [2022-07-22 21:29:56,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 517 places, 544 transitions, 1130 flow [2022-07-22 21:29:56,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 517 places, 544 transitions, 1130 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-22 21:29:56,755 INFO L242 Difference]: Finished difference. Result has 518 places, 539 transitions, 1096 flow [2022-07-22 21:29:56,756 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=581, PETRI_DIFFERENCE_MINUEND_FLOW=1084, PETRI_DIFFERENCE_MINUEND_PLACES=515, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=538, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=536, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1096, PETRI_PLACES=518, PETRI_TRANSITIONS=539} [2022-07-22 21:29:56,757 INFO L279 CegarLoopForPetriNet]: 514 programPoint places, 4 predicate places. [2022-07-22 21:29:56,757 INFO L495 AbstractCegarLoop]: Abstraction has has 518 places, 539 transitions, 1096 flow [2022-07-22 21:29:56,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 528.0) internal successors, (1584), 3 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:29:56,758 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:29:56,758 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:29:56,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 21:29:56,760 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2022-07-22 21:29:56,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:29:56,761 INFO L85 PathProgramCache]: Analyzing trace with hash 1201829103, now seen corresponding path program 1 times [2022-07-22 21:29:56,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:29:56,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852673717] [2022-07-22 21:29:56,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:29:56,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:29:56,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:29:56,879 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:29:56,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:29:56,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852673717] [2022-07-22 21:29:56,881 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852673717] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 21:29:56,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [376170] [2022-07-22 21:29:56,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:29:56,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 21:29:56,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 21:29:56,887 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) [2022-07-22 21:29:56,912 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-22 21:29:57,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:29:57,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 21:29:57,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 21:29:57,075 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:29:57,075 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 21:29:57,094 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:29:57,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [376170] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 21:29:57,095 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 21:29:57,095 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2022-07-22 21:29:57,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740451822] [2022-07-22 21:29:57,096 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 21:29:57,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 21:29:57,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:29:57,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 21:29:57,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-22 21:29:57,101 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 527 out of 581 [2022-07-22 21:29:57,103 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 518 places, 539 transitions, 1096 flow. Second operand has 5 states, 5 states have (on average 530.2) internal successors, (2651), 5 states have internal predecessors, (2651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:29:57,104 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:29:57,104 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 527 of 581 [2022-07-22 21:29:57,104 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:29:57,324 INFO L129 PetriNetUnfolder]: 40/800 cut-off events. [2022-07-22 21:29:57,324 INFO L130 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2022-07-22 21:29:57,334 INFO L84 FinitePrefix]: Finished finitePrefix Result has 833 conditions, 800 events. 40/800 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 2900 event pairs, 0 based on Foata normal form. 1/724 useless extension candidates. Maximal degree in co-relation 827. Up to 7 conditions per place. [2022-07-22 21:29:57,339 INFO L132 encePairwiseOnDemand]: 577/581 looper letters, 14 selfloop transitions, 4 changer transitions 0/545 dead transitions. [2022-07-22 21:29:57,340 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 521 places, 545 transitions, 1144 flow [2022-07-22 21:29:57,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 21:29:57,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-07-22 21:29:57,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2127 transitions. [2022-07-22 21:29:57,345 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9152323580034424 [2022-07-22 21:29:57,345 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2127 transitions. [2022-07-22 21:29:57,345 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2127 transitions. [2022-07-22 21:29:57,347 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:29:57,347 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2127 transitions. [2022-07-22 21:29:57,352 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 531.75) internal successors, (2127), 4 states have internal predecessors, (2127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:29:57,357 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 581.0) internal successors, (2905), 5 states have internal predecessors, (2905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:29:57,359 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 581.0) internal successors, (2905), 5 states have internal predecessors, (2905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:29:57,359 INFO L186 Difference]: Start difference. First operand has 518 places, 539 transitions, 1096 flow. Second operand 4 states and 2127 transitions. [2022-07-22 21:29:57,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 521 places, 545 transitions, 1144 flow [2022-07-22 21:29:57,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 520 places, 545 transitions, 1142 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-22 21:29:57,371 INFO L242 Difference]: Finished difference. Result has 522 places, 540 transitions, 1114 flow [2022-07-22 21:29:57,373 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=581, PETRI_DIFFERENCE_MINUEND_FLOW=1094, PETRI_DIFFERENCE_MINUEND_PLACES=517, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=539, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=535, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1114, PETRI_PLACES=522, PETRI_TRANSITIONS=540} [2022-07-22 21:29:57,373 INFO L279 CegarLoopForPetriNet]: 514 programPoint places, 8 predicate places. [2022-07-22 21:29:57,374 INFO L495 AbstractCegarLoop]: Abstraction has has 522 places, 540 transitions, 1114 flow [2022-07-22 21:29:57,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 530.2) internal successors, (2651), 5 states have internal predecessors, (2651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:29:57,376 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:29:57,376 INFO L200 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:29:57,405 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-22 21:29:57,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 21:29:57,600 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2022-07-22 21:29:57,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:29:57,600 INFO L85 PathProgramCache]: Analyzing trace with hash -24715469, now seen corresponding path program 2 times [2022-07-22 21:29:57,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:29:57,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026215588] [2022-07-22 21:29:57,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:29:57,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:29:57,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:29:57,672 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-22 21:29:57,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:29:57,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026215588] [2022-07-22 21:29:57,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026215588] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:29:57,673 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:29:57,673 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 21:29:57,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380399932] [2022-07-22 21:29:57,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:29:57,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 21:29:57,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:29:57,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 21:29:57,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 21:29:57,678 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 530 out of 581 [2022-07-22 21:29:57,681 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 522 places, 540 transitions, 1114 flow. Second operand has 4 states, 4 states have (on average 531.0) internal successors, (2124), 4 states have internal predecessors, (2124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:29:57,681 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:29:57,681 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 530 of 581 [2022-07-22 21:29:57,682 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:29:57,845 INFO L129 PetriNetUnfolder]: 40/798 cut-off events. [2022-07-22 21:29:57,846 INFO L130 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2022-07-22 21:29:57,857 INFO L84 FinitePrefix]: Finished finitePrefix Result has 830 conditions, 798 events. 40/798 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 2897 event pairs, 0 based on Foata normal form. 0/722 useless extension candidates. Maximal degree in co-relation 823. Up to 5 conditions per place. [2022-07-22 21:29:57,864 INFO L132 encePairwiseOnDemand]: 578/581 looper letters, 5 selfloop transitions, 2 changer transitions 0/538 dead transitions. [2022-07-22 21:29:57,865 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 523 places, 538 transitions, 1124 flow [2022-07-22 21:29:57,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 21:29:57,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-07-22 21:29:57,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2128 transitions. [2022-07-22 21:29:57,869 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9156626506024096 [2022-07-22 21:29:57,870 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2128 transitions. [2022-07-22 21:29:57,870 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2128 transitions. [2022-07-22 21:29:57,871 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:29:57,871 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2128 transitions. [2022-07-22 21:29:57,875 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 532.0) internal successors, (2128), 4 states have internal predecessors, (2128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:29:57,880 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 581.0) internal successors, (2905), 5 states have internal predecessors, (2905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:29:57,882 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 581.0) internal successors, (2905), 5 states have internal predecessors, (2905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:29:57,882 INFO L186 Difference]: Start difference. First operand has 522 places, 540 transitions, 1114 flow. Second operand 4 states and 2128 transitions. [2022-07-22 21:29:57,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 523 places, 538 transitions, 1124 flow [2022-07-22 21:29:57,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 522 places, 538 transitions, 1120 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-07-22 21:29:57,893 INFO L242 Difference]: Finished difference. Result has 522 places, 538 transitions, 1110 flow [2022-07-22 21:29:57,895 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=581, PETRI_DIFFERENCE_MINUEND_FLOW=1106, PETRI_DIFFERENCE_MINUEND_PLACES=519, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=538, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=536, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1110, PETRI_PLACES=522, PETRI_TRANSITIONS=538} [2022-07-22 21:29:57,896 INFO L279 CegarLoopForPetriNet]: 514 programPoint places, 8 predicate places. [2022-07-22 21:29:57,896 INFO L495 AbstractCegarLoop]: Abstraction has has 522 places, 538 transitions, 1110 flow [2022-07-22 21:29:57,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 531.0) internal successors, (2124), 4 states have internal predecessors, (2124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:29:57,899 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:29:57,899 INFO L200 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:29:57,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 21:29:57,900 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2022-07-22 21:29:57,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:29:57,900 INFO L85 PathProgramCache]: Analyzing trace with hash 1817996092, now seen corresponding path program 1 times [2022-07-22 21:29:57,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:29:57,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271644670] [2022-07-22 21:29:57,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:29:57,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:29:57,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:29:58,040 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-22 21:29:58,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:29:58,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271644670] [2022-07-22 21:29:58,041 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271644670] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 21:29:58,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [931578315] [2022-07-22 21:29:58,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:29:58,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 21:29:58,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 21:29:58,044 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) [2022-07-22 21:29:58,045 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-22 21:29:58,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:29:58,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 21:29:58,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 21:29:58,240 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-22 21:29:58,241 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 21:29:58,241 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [931578315] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:29:58,242 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 21:29:58,242 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2022-07-22 21:29:58,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013322396] [2022-07-22 21:29:58,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:29:58,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 21:29:58,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:29:58,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 21:29:58,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 21:29:58,254 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 529 out of 581 [2022-07-22 21:29:58,257 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 522 places, 538 transitions, 1110 flow. Second operand has 4 states, 4 states have (on average 531.25) internal successors, (2125), 4 states have internal predecessors, (2125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:29:58,257 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:29:58,257 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 529 of 581 [2022-07-22 21:29:58,257 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:29:58,411 INFO L129 PetriNetUnfolder]: 40/793 cut-off events. [2022-07-22 21:29:58,412 INFO L130 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-07-22 21:29:58,424 INFO L84 FinitePrefix]: Finished finitePrefix Result has 828 conditions, 793 events. 40/793 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 2863 event pairs, 0 based on Foata normal form. 0/718 useless extension candidates. Maximal degree in co-relation 820. Up to 5 conditions per place. [2022-07-22 21:29:58,430 INFO L132 encePairwiseOnDemand]: 577/581 looper letters, 7 selfloop transitions, 3 changer transitions 0/538 dead transitions. [2022-07-22 21:29:58,430 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 524 places, 538 transitions, 1128 flow [2022-07-22 21:29:58,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 21:29:58,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-07-22 21:29:58,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2127 transitions. [2022-07-22 21:29:58,435 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9152323580034424 [2022-07-22 21:29:58,435 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2127 transitions. [2022-07-22 21:29:58,435 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2127 transitions. [2022-07-22 21:29:58,436 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:29:58,436 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2127 transitions. [2022-07-22 21:29:58,440 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 531.75) internal successors, (2127), 4 states have internal predecessors, (2127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:29:58,445 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 581.0) internal successors, (2905), 5 states have internal predecessors, (2905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:29:58,447 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 581.0) internal successors, (2905), 5 states have internal predecessors, (2905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:29:58,447 INFO L186 Difference]: Start difference. First operand has 522 places, 538 transitions, 1110 flow. Second operand 4 states and 2127 transitions. [2022-07-22 21:29:58,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 524 places, 538 transitions, 1128 flow [2022-07-22 21:29:58,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 520 places, 538 transitions, 1121 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-07-22 21:29:58,457 INFO L242 Difference]: Finished difference. Result has 522 places, 538 transitions, 1116 flow [2022-07-22 21:29:58,458 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=581, PETRI_DIFFERENCE_MINUEND_FLOW=1099, PETRI_DIFFERENCE_MINUEND_PLACES=517, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=537, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=534, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1116, PETRI_PLACES=522, PETRI_TRANSITIONS=538} [2022-07-22 21:29:58,461 INFO L279 CegarLoopForPetriNet]: 514 programPoint places, 8 predicate places. [2022-07-22 21:29:58,462 INFO L495 AbstractCegarLoop]: Abstraction has has 522 places, 538 transitions, 1116 flow [2022-07-22 21:29:58,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 531.25) internal successors, (2125), 4 states have internal predecessors, (2125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:29:58,464 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:29:58,464 INFO L200 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:29:58,491 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-22 21:29:58,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 21:29:58,689 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting worker_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2022-07-22 21:29:58,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:29:58,690 INFO L85 PathProgramCache]: Analyzing trace with hash 1162500929, now seen corresponding path program 1 times [2022-07-22 21:29:58,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:29:58,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704803017] [2022-07-22 21:29:58,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:29:58,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:29:58,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:29:59,577 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-22 21:29:59,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:29:59,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704803017] [2022-07-22 21:29:59,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704803017] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:29:59,578 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:29:59,578 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-07-22 21:29:59,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903017479] [2022-07-22 21:29:59,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:29:59,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-07-22 21:29:59,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:29:59,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-07-22 21:29:59,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2022-07-22 21:29:59,588 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 396 out of 581 [2022-07-22 21:29:59,595 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 522 places, 538 transitions, 1116 flow. Second operand has 17 states, 17 states have (on average 398.6470588235294) internal successors, (6777), 17 states have internal predecessors, (6777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:29:59,596 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:29:59,596 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 396 of 581 [2022-07-22 21:29:59,596 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:30:02,919 INFO L129 PetriNetUnfolder]: 3485/15852 cut-off events. [2022-07-22 21:30:02,919 INFO L130 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-07-22 21:30:02,971 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21612 conditions, 15852 events. 3485/15852 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 162984 event pairs, 1605 based on Foata normal form. 0/14208 useless extension candidates. Maximal degree in co-relation 21603. Up to 4593 conditions per place. [2022-07-22 21:30:03,021 INFO L132 encePairwiseOnDemand]: 563/581 looper letters, 265 selfloop transitions, 21 changer transitions 0/682 dead transitions. [2022-07-22 21:30:03,021 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 536 places, 682 transitions, 1976 flow [2022-07-22 21:30:03,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 21:30:03,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-07-22 21:30:03,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 6230 transitions. [2022-07-22 21:30:03,034 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.714859437751004 [2022-07-22 21:30:03,035 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 6230 transitions. [2022-07-22 21:30:03,035 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 6230 transitions. [2022-07-22 21:30:03,038 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:30:03,038 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 6230 transitions. [2022-07-22 21:30:03,050 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 415.3333333333333) internal successors, (6230), 15 states have internal predecessors, (6230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:30:03,063 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 581.0) internal successors, (9296), 16 states have internal predecessors, (9296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:30:03,066 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 581.0) internal successors, (9296), 16 states have internal predecessors, (9296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:30:03,066 INFO L186 Difference]: Start difference. First operand has 522 places, 538 transitions, 1116 flow. Second operand 15 states and 6230 transitions. [2022-07-22 21:30:03,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 536 places, 682 transitions, 1976 flow [2022-07-22 21:30:03,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 535 places, 682 transitions, 1975 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-22 21:30:03,079 INFO L242 Difference]: Finished difference. Result has 540 places, 549 transitions, 1221 flow [2022-07-22 21:30:03,081 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=581, PETRI_DIFFERENCE_MINUEND_FLOW=1115, PETRI_DIFFERENCE_MINUEND_PLACES=521, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=538, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=522, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1221, PETRI_PLACES=540, PETRI_TRANSITIONS=549} [2022-07-22 21:30:03,081 INFO L279 CegarLoopForPetriNet]: 514 programPoint places, 26 predicate places. [2022-07-22 21:30:03,082 INFO L495 AbstractCegarLoop]: Abstraction has has 540 places, 549 transitions, 1221 flow [2022-07-22 21:30:03,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 398.6470588235294) internal successors, (6777), 17 states have internal predecessors, (6777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:30:03,084 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:30:03,085 INFO L200 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:30:03,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 21:30:03,085 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2022-07-22 21:30:03,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:30:03,086 INFO L85 PathProgramCache]: Analyzing trace with hash -1614772030, now seen corresponding path program 1 times [2022-07-22 21:30:03,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:30:03,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353908885] [2022-07-22 21:30:03,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:30:03,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:30:03,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:30:03,131 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-22 21:30:03,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:30:03,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353908885] [2022-07-22 21:30:03,132 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353908885] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:30:03,132 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:30:03,132 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 21:30:03,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282214908] [2022-07-22 21:30:03,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:30:03,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 21:30:03,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:30:03,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 21:30:03,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 21:30:03,137 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 529 out of 581 [2022-07-22 21:30:03,139 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 540 places, 549 transitions, 1221 flow. Second operand has 3 states, 3 states have (on average 530.0) internal successors, (1590), 3 states have internal predecessors, (1590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:30:03,139 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:30:03,140 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 529 of 581 [2022-07-22 21:30:03,140 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:30:03,402 INFO L129 PetriNetUnfolder]: 89/1606 cut-off events. [2022-07-22 21:30:03,402 INFO L130 PetriNetUnfolder]: For 28/30 co-relation queries the response was YES. [2022-07-22 21:30:03,418 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1710 conditions, 1606 events. 89/1606 cut-off events. For 28/30 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 9185 event pairs, 0 based on Foata normal form. 1/1447 useless extension candidates. Maximal degree in co-relation 1696. Up to 12 conditions per place. [2022-07-22 21:30:03,425 INFO L132 encePairwiseOnDemand]: 578/581 looper letters, 7 selfloop transitions, 2 changer transitions 0/548 dead transitions. [2022-07-22 21:30:03,425 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 542 places, 548 transitions, 1233 flow [2022-07-22 21:30:03,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 21:30:03,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-22 21:30:03,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1597 transitions. [2022-07-22 21:30:03,429 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9162363740676994 [2022-07-22 21:30:03,429 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1597 transitions. [2022-07-22 21:30:03,429 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1597 transitions. [2022-07-22 21:30:03,430 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:30:03,430 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1597 transitions. [2022-07-22 21:30:03,433 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 532.3333333333334) internal successors, (1597), 3 states have internal predecessors, (1597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:30:03,436 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 581.0) internal successors, (2324), 4 states have internal predecessors, (2324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:30:03,436 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 581.0) internal successors, (2324), 4 states have internal predecessors, (2324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:30:03,436 INFO L186 Difference]: Start difference. First operand has 540 places, 549 transitions, 1221 flow. Second operand 3 states and 1597 transitions. [2022-07-22 21:30:03,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 542 places, 548 transitions, 1233 flow [2022-07-22 21:30:03,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 533 places, 548 transitions, 1214 flow, removed 0 selfloop flow, removed 9 redundant places. [2022-07-22 21:30:03,447 INFO L242 Difference]: Finished difference. Result has 533 places, 548 transitions, 1200 flow [2022-07-22 21:30:03,448 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=581, PETRI_DIFFERENCE_MINUEND_FLOW=1196, PETRI_DIFFERENCE_MINUEND_PLACES=531, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=548, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=546, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1200, PETRI_PLACES=533, PETRI_TRANSITIONS=548} [2022-07-22 21:30:03,449 INFO L279 CegarLoopForPetriNet]: 514 programPoint places, 19 predicate places. [2022-07-22 21:30:03,449 INFO L495 AbstractCegarLoop]: Abstraction has has 533 places, 548 transitions, 1200 flow [2022-07-22 21:30:03,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 530.0) internal successors, (1590), 3 states have internal predecessors, (1590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:30:03,450 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:30:03,450 INFO L200 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:30:03,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 21:30:03,451 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting worker_fnErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2022-07-22 21:30:03,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:30:03,451 INFO L85 PathProgramCache]: Analyzing trace with hash 1746328945, now seen corresponding path program 1 times [2022-07-22 21:30:03,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:30:03,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497307169] [2022-07-22 21:30:03,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:30:03,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:30:03,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:30:04,294 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-22 21:30:04,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:30:04,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497307169] [2022-07-22 21:30:04,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497307169] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:30:04,295 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:30:04,295 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-22 21:30:04,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175152018] [2022-07-22 21:30:04,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:30:04,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-22 21:30:04,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:30:04,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-22 21:30:04,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-07-22 21:30:04,312 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 396 out of 581 [2022-07-22 21:30:04,319 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 533 places, 548 transitions, 1200 flow. Second operand has 18 states, 18 states have (on average 398.55555555555554) internal successors, (7174), 18 states have internal predecessors, (7174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:30:04,319 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:30:04,319 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 396 of 581 [2022-07-22 21:30:04,319 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:30:07,377 INFO L129 PetriNetUnfolder]: 3458/16435 cut-off events. [2022-07-22 21:30:07,377 INFO L130 PetriNetUnfolder]: For 536/538 co-relation queries the response was YES. [2022-07-22 21:30:07,423 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22739 conditions, 16435 events. 3458/16435 cut-off events. For 536/538 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 170190 event pairs, 1671 based on Foata normal form. 0/14790 useless extension candidates. Maximal degree in co-relation 22725. Up to 4595 conditions per place. [2022-07-22 21:30:07,475 INFO L132 encePairwiseOnDemand]: 563/581 looper letters, 264 selfloop transitions, 24 changer transitions 0/686 dead transitions. [2022-07-22 21:30:07,475 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 548 places, 686 transitions, 2072 flow [2022-07-22 21:30:07,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-22 21:30:07,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-22 21:30:07,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 6625 transitions. [2022-07-22 21:30:07,489 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7126721170395869 [2022-07-22 21:30:07,489 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 6625 transitions. [2022-07-22 21:30:07,489 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 6625 transitions. [2022-07-22 21:30:07,493 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:30:07,494 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 6625 transitions. [2022-07-22 21:30:07,505 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 414.0625) internal successors, (6625), 16 states have internal predecessors, (6625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:30:07,520 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 581.0) internal successors, (9877), 17 states have internal predecessors, (9877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:30:07,523 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 581.0) internal successors, (9877), 17 states have internal predecessors, (9877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:30:07,523 INFO L186 Difference]: Start difference. First operand has 533 places, 548 transitions, 1200 flow. Second operand 16 states and 6625 transitions. [2022-07-22 21:30:07,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 548 places, 686 transitions, 2072 flow [2022-07-22 21:30:07,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 546 places, 686 transitions, 2068 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-22 21:30:07,540 INFO L242 Difference]: Finished difference. Result has 550 places, 554 transitions, 1288 flow [2022-07-22 21:30:07,541 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=581, PETRI_DIFFERENCE_MINUEND_FLOW=1196, PETRI_DIFFERENCE_MINUEND_PLACES=531, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=548, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=528, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1288, PETRI_PLACES=550, PETRI_TRANSITIONS=554} [2022-07-22 21:30:07,542 INFO L279 CegarLoopForPetriNet]: 514 programPoint places, 36 predicate places. [2022-07-22 21:30:07,542 INFO L495 AbstractCegarLoop]: Abstraction has has 550 places, 554 transitions, 1288 flow [2022-07-22 21:30:07,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 398.55555555555554) internal successors, (7174), 18 states have internal predecessors, (7174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:30:07,544 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:30:07,545 INFO L200 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:30:07,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-22 21:30:07,545 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting worker_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2022-07-22 21:30:07,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:30:07,546 INFO L85 PathProgramCache]: Analyzing trace with hash -1091126161, now seen corresponding path program 1 times [2022-07-22 21:30:07,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:30:07,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651231627] [2022-07-22 21:30:07,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:30:07,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:30:07,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:30:08,326 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-22 21:30:08,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:30:08,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651231627] [2022-07-22 21:30:08,327 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651231627] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 21:30:08,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1816692672] [2022-07-22 21:30:08,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:30:08,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 21:30:08,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 21:30:08,332 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) [2022-07-22 21:30:08,339 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-22 21:30:08,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:30:08,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 53 conjunts are in the unsatisfiable core [2022-07-22 21:30:08,487 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 21:30:08,837 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-07-22 21:30:08,838 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-07-22 21:30:08,915 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-07-22 21:30:08,915 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-07-22 21:30:09,004 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 23 treesize of output 23 [2022-07-22 21:30:09,027 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 23 treesize of output 23 [2022-07-22 21:30:09,048 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 23 treesize of output 23 [2022-07-22 21:30:09,132 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 23 treesize of output 23 [2022-07-22 21:30:09,157 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 23 treesize of output 23 [2022-07-22 21:30:09,183 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 23 treesize of output 23 [2022-07-22 21:30:09,454 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 23 treesize of output 23 [2022-07-22 21:30:09,485 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 23 treesize of output 23 [2022-07-22 21:30:09,512 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 23 treesize of output 23 [2022-07-22 21:30:09,542 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 23 treesize of output 23 [2022-07-22 21:30:09,617 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-22 21:30:09,618 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 11 treesize of output 11 [2022-07-22 21:30:09,725 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 23 treesize of output 23 [2022-07-22 21:30:09,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 21:30:09,907 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 23 treesize of output 23 [2022-07-22 21:30:10,146 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2022-07-22 21:30:10,150 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-22 21:30:10,151 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 21:30:10,338 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_661 (Array Int Int))) (let ((.cse0 (select (store |c_#memory_int| |c_~#pre~0.base| v_ArrVal_661) |c_~#in~0.base|))) (or (not (<= (mod (select .cse0 |c_~#in~0.offset|) 256) 0)) (= (mod (select .cse0 (+ |c_~#in~0.offset| 1)) 256) 0)))) is different from false [2022-07-22 21:30:10,406 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_661 (Array Int Int)) (v_ArrVal_660 (Array Int Int))) (let ((.cse0 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#worker~0#1.base| v_ArrVal_660) |c_~#pre~0.base| v_ArrVal_661) |c_~#in~0.base|))) (or (not (<= (mod (select .cse0 |c_~#in~0.offset|) 256) 0)) (= (mod (select .cse0 (+ |c_~#in~0.offset| 1)) 256) 0)))) is different from false [2022-07-22 21:30:12,235 INFO L356 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-07-22 21:30:12,236 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 9534 treesize of output 9364 [2022-07-22 21:30:12,747 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-22 21:30:12,748 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 6674 treesize of output 6578 [2022-07-22 21:30:12,809 INFO L356 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-07-22 21:30:12,809 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 8892 treesize of output 8508 [2022-07-22 21:30:12,869 INFO L356 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-07-22 21:30:12,870 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 8508 treesize of output 7740 [2022-07-22 21:30:12,930 INFO L356 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-07-22 21:30:12,931 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 7740 treesize of output 7548 [2022-07-22 21:31:42,119 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-22 21:31:42,119 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 151 treesize of output 219 [2022-07-22 21:31:42,349 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-22 21:31:42,349 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1816692672] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 21:31:42,349 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 21:31:42,349 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 18, 21] total 53 [2022-07-22 21:31:42,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152806338] [2022-07-22 21:31:42,350 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 21:31:42,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-07-22 21:31:42,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:31:42,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-07-22 21:31:42,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=421, Invalid=2090, Unknown=47, NotChecked=198, Total=2756 [2022-07-22 21:31:42,363 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 396 out of 581 [2022-07-22 21:31:42,383 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 550 places, 554 transitions, 1288 flow. Second operand has 53 states, 53 states have (on average 398.6981132075472) internal successors, (21131), 53 states have internal predecessors, (21131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:31:42,383 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:31:42,383 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 396 of 581 [2022-07-22 21:31:42,383 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:31:49,053 INFO L129 PetriNetUnfolder]: 6657/31137 cut-off events. [2022-07-22 21:31:49,053 INFO L130 PetriNetUnfolder]: For 2895/2895 co-relation queries the response was YES. [2022-07-22 21:31:49,214 INFO L84 FinitePrefix]: Finished finitePrefix Result has 44322 conditions, 31137 events. 6657/31137 cut-off events. For 2895/2895 co-relation queries the response was YES. Maximal size of possible extension queue 402. Compared 372694 event pairs, 3476 based on Foata normal form. 67/28300 useless extension candidates. Maximal degree in co-relation 44304. Up to 5045 conditions per place. [2022-07-22 21:31:49,316 INFO L132 encePairwiseOnDemand]: 547/581 looper letters, 574 selfloop transitions, 95 changer transitions 0/1067 dead transitions. [2022-07-22 21:31:49,316 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 580 places, 1067 transitions, 3779 flow [2022-07-22 21:31:49,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-07-22 21:31:49,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-07-22 21:31:49,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 12944 transitions. [2022-07-22 21:31:49,342 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.718671922713897 [2022-07-22 21:31:49,343 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 12944 transitions. [2022-07-22 21:31:49,343 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 12944 transitions. [2022-07-22 21:31:49,350 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:31:49,350 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 12944 transitions. [2022-07-22 21:31:49,372 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 417.5483870967742) internal successors, (12944), 31 states have internal predecessors, (12944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:31:49,402 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 581.0) internal successors, (18592), 32 states have internal predecessors, (18592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:31:49,409 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 581.0) internal successors, (18592), 32 states have internal predecessors, (18592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:31:49,409 INFO L186 Difference]: Start difference. First operand has 550 places, 554 transitions, 1288 flow. Second operand 31 states and 12944 transitions. [2022-07-22 21:31:49,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 580 places, 1067 transitions, 3779 flow [2022-07-22 21:31:49,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 570 places, 1067 transitions, 3738 flow, removed 0 selfloop flow, removed 10 redundant places. [2022-07-22 21:31:49,446 INFO L242 Difference]: Finished difference. Result has 581 places, 624 transitions, 1928 flow [2022-07-22 21:31:49,448 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=581, PETRI_DIFFERENCE_MINUEND_FLOW=1263, PETRI_DIFFERENCE_MINUEND_PLACES=540, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=554, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=511, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=1928, PETRI_PLACES=581, PETRI_TRANSITIONS=624} [2022-07-22 21:31:49,449 INFO L279 CegarLoopForPetriNet]: 514 programPoint places, 67 predicate places. [2022-07-22 21:31:49,450 INFO L495 AbstractCegarLoop]: Abstraction has has 581 places, 624 transitions, 1928 flow [2022-07-22 21:31:49,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 398.6981132075472) internal successors, (21131), 53 states have internal predecessors, (21131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:31:49,456 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:31:49,457 INFO L200 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:31:49,483 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-22 21:31:49,671 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 [2022-07-22 21:31:49,671 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2022-07-22 21:31:49,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:31:49,672 INFO L85 PathProgramCache]: Analyzing trace with hash 604174216, now seen corresponding path program 1 times [2022-07-22 21:31:49,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:31:49,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060939004] [2022-07-22 21:31:49,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:31:49,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:31:49,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:31:50,382 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-22 21:31:50,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:31:50,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060939004] [2022-07-22 21:31:50,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060939004] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 21:31:50,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [779229772] [2022-07-22 21:31:50,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:31:50,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 21:31:50,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 21:31:50,391 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) [2022-07-22 21:31:50,392 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-22 21:31:50,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:31:50,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 40 conjunts are in the unsatisfiable core [2022-07-22 21:31:50,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 21:31:50,812 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-07-22 21:31:50,813 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-07-22 21:31:50,892 INFO L356 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-07-22 21:31:50,893 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 33 [2022-07-22 21:31:50,986 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-07-22 21:31:51,010 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-07-22 21:31:51,035 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-07-22 21:31:51,136 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-07-22 21:31:51,164 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-07-22 21:31:51,191 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-07-22 21:31:51,378 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-07-22 21:31:51,387 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-07-22 21:31:51,408 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-07-22 21:31:51,429 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-07-22 21:31:51,505 INFO L356 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-07-22 21:31:51,506 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2022-07-22 21:31:51,570 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-07-22 21:31:51,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 21:31:51,683 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-07-22 21:31:51,705 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-07-22 21:31:51,708 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-22 21:31:51,708 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 21:31:51,761 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_835 (Array Int Int))) (= (mod (select (select (store |c_#memory_int| |c_~#pre~0.base| v_ArrVal_835) |c_~#in~0.base|) |c_~#in~0.offset|) 256) 0)) is different from false [2022-07-22 21:31:51,800 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_834 (Array Int Int)) (v_ArrVal_835 (Array Int Int))) (= (mod (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#worker~0#1.base| v_ArrVal_834) |c_~#pre~0.base| v_ArrVal_835) |c_~#in~0.base|) |c_~#in~0.offset|) 256) 0)) is different from false [2022-07-22 21:31:52,606 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8766 treesize of output 8634 [2022-07-22 21:31:52,914 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 4155 treesize of output 4027 [2022-07-22 21:31:52,947 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 8182 treesize of output 7926 [2022-07-22 21:31:53,005 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 7926 treesize of output 7862 [2022-07-22 21:31:53,074 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 7862 treesize of output 7350 [2022-07-22 21:33:08,875 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-22 21:33:08,876 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 166 treesize of output 318 [2022-07-22 21:33:09,788 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 1 not checked. [2022-07-22 21:33:09,788 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [779229772] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 21:33:09,788 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 21:33:09,788 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 17] total 42 [2022-07-22 21:33:09,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990276441] [2022-07-22 21:33:09,788 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 21:33:09,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-07-22 21:33:09,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:33:09,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-07-22 21:33:09,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=323, Invalid=1212, Unknown=33, NotChecked=154, Total=1722 [2022-07-22 21:33:09,800 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 395 out of 581 [2022-07-22 21:33:09,826 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 581 places, 624 transitions, 1928 flow. Second operand has 42 states, 42 states have (on average 397.9761904761905) internal successors, (16715), 42 states have internal predecessors, (16715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:33:09,826 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:33:09,826 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 395 of 581 [2022-07-22 21:33:09,826 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:33:14,851 INFO L129 PetriNetUnfolder]: 6376/31098 cut-off events. [2022-07-22 21:33:14,851 INFO L130 PetriNetUnfolder]: For 14893/15210 co-relation queries the response was YES. [2022-07-22 21:33:15,107 INFO L84 FinitePrefix]: Finished finitePrefix Result has 48627 conditions, 31098 events. 6376/31098 cut-off events. For 14893/15210 co-relation queries the response was YES. Maximal size of possible extension queue 390. Compared 372107 event pairs, 3368 based on Foata normal form. 69/27997 useless extension candidates. Maximal degree in co-relation 48598. Up to 8568 conditions per place. [2022-07-22 21:33:15,212 INFO L132 encePairwiseOnDemand]: 562/581 looper letters, 345 selfloop transitions, 40 changer transitions 0/800 dead transitions. [2022-07-22 21:33:15,213 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 596 places, 800 transitions, 3203 flow [2022-07-22 21:33:15,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-22 21:33:15,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-22 21:33:15,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 6632 transitions. [2022-07-22 21:33:15,232 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7134251290877797 [2022-07-22 21:33:15,232 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 6632 transitions. [2022-07-22 21:33:15,232 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 6632 transitions. [2022-07-22 21:33:15,235 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:33:15,235 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 6632 transitions. [2022-07-22 21:33:15,244 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 414.5) internal successors, (6632), 16 states have internal predecessors, (6632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:33:15,254 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 581.0) internal successors, (9877), 17 states have internal predecessors, (9877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:33:15,256 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 581.0) internal successors, (9877), 17 states have internal predecessors, (9877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:33:15,256 INFO L186 Difference]: Start difference. First operand has 581 places, 624 transitions, 1928 flow. Second operand 16 states and 6632 transitions. [2022-07-22 21:33:15,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 596 places, 800 transitions, 3203 flow [2022-07-22 21:33:15,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 581 places, 800 transitions, 3076 flow, removed 33 selfloop flow, removed 15 redundant places. [2022-07-22 21:33:15,293 INFO L242 Difference]: Finished difference. Result has 586 places, 638 transitions, 2052 flow [2022-07-22 21:33:15,294 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=581, PETRI_DIFFERENCE_MINUEND_FLOW=1832, PETRI_DIFFERENCE_MINUEND_PLACES=566, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=624, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=594, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=2052, PETRI_PLACES=586, PETRI_TRANSITIONS=638} [2022-07-22 21:33:15,296 INFO L279 CegarLoopForPetriNet]: 514 programPoint places, 72 predicate places. [2022-07-22 21:33:15,296 INFO L495 AbstractCegarLoop]: Abstraction has has 586 places, 638 transitions, 2052 flow [2022-07-22 21:33:15,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 397.9761904761905) internal successors, (16715), 42 states have internal predecessors, (16715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:33:15,299 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:33:15,299 INFO L200 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:33:15,327 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-22 21:33:15,515 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 [2022-07-22 21:33:15,515 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting worker_fnErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2022-07-22 21:33:15,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:33:15,516 INFO L85 PathProgramCache]: Analyzing trace with hash -1424505469, now seen corresponding path program 1 times [2022-07-22 21:33:15,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:33:15,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294952037] [2022-07-22 21:33:15,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:33:15,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:33:15,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:33:16,222 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-22 21:33:16,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:33:16,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294952037] [2022-07-22 21:33:16,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294952037] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 21:33:16,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1933111019] [2022-07-22 21:33:16,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:33:16,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 21:33:16,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 21:33:16,224 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) [2022-07-22 21:33:16,225 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-22 21:33:16,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:33:16,379 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 47 conjunts are in the unsatisfiable core [2022-07-22 21:33:16,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 21:33:16,629 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-07-22 21:33:16,629 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-07-22 21:33:16,689 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-07-22 21:33:16,689 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-07-22 21:33:16,759 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 23 treesize of output 23 [2022-07-22 21:33:16,775 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 23 treesize of output 23 [2022-07-22 21:33:16,793 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 23 treesize of output 23 [2022-07-22 21:33:16,865 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 23 treesize of output 23 [2022-07-22 21:33:16,880 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 23 treesize of output 23 [2022-07-22 21:33:16,894 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 23 treesize of output 23 [2022-07-22 21:33:17,075 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 23 treesize of output 23 [2022-07-22 21:33:17,090 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 23 treesize of output 23 [2022-07-22 21:33:17,106 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 23 treesize of output 23 [2022-07-22 21:33:17,122 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 23 treesize of output 23 [2022-07-22 21:33:17,157 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-22 21:33:17,158 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 11 treesize of output 11 [2022-07-22 21:33:17,234 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 23 treesize of output 23 [2022-07-22 21:33:17,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 21:33:17,313 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 23 treesize of output 23 [2022-07-22 21:33:17,533 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2022-07-22 21:33:17,535 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-22 21:33:17,536 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 21:33:17,725 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1009 (Array Int Int))) (let ((.cse0 (select (store |c_#memory_int| |c_~#pre~0.base| v_ArrVal_1009) |c_~#post~0.base|))) (or (= (mod (select .cse0 (+ |c_~#post~0.offset| 1)) 256) 0) (not (<= (mod (select .cse0 |c_~#post~0.offset|) 256) 0))))) is different from false [2022-07-22 21:33:17,758 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1009 (Array Int Int)) (v_ArrVal_1008 (Array Int Int))) (let ((.cse0 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#worker~0#1.base| v_ArrVal_1008) |c_~#pre~0.base| v_ArrVal_1009) |c_~#post~0.base|))) (or (not (<= (mod (select .cse0 |c_~#post~0.offset|) 256) 0)) (= (mod (select .cse0 (+ |c_~#post~0.offset| 1)) 256) 0)))) is different from false [2022-07-22 21:33:18,990 INFO L356 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-07-22 21:33:18,991 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 2382 treesize of output 2332 [2022-07-22 21:33:19,040 INFO L356 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-07-22 21:33:19,040 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 2232 treesize of output 2040 [2022-07-22 21:33:19,062 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-22 21:33:19,063 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 1530 treesize of output 1506 [2022-07-22 21:33:19,085 INFO L356 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-07-22 21:33:19,086 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 2016 treesize of output 1968 [2022-07-22 21:33:19,107 INFO L356 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-07-22 21:33:19,107 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 1968 treesize of output 1872 [2022-07-22 21:33:20,809 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-22 21:33:20,810 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 93 treesize of output 163 [2022-07-22 21:33:20,996 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-22 21:33:20,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1933111019] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 21:33:20,996 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 21:33:20,996 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 18, 21] total 53 [2022-07-22 21:33:20,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635306241] [2022-07-22 21:33:20,996 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 21:33:20,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-07-22 21:33:20,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:33:20,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-07-22 21:33:20,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=370, Invalid=2146, Unknown=42, NotChecked=198, Total=2756 [2022-07-22 21:33:21,008 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 396 out of 581 [2022-07-22 21:33:21,016 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 586 places, 638 transitions, 2052 flow. Second operand has 53 states, 53 states have (on average 398.75471698113205) internal successors, (21134), 53 states have internal predecessors, (21134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:33:21,016 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:33:21,016 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 396 of 581 [2022-07-22 21:33:21,016 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:33:27,028 INFO L129 PetriNetUnfolder]: 6799/32780 cut-off events. [2022-07-22 21:33:27,029 INFO L130 PetriNetUnfolder]: For 18423/18618 co-relation queries the response was YES. [2022-07-22 21:33:27,389 INFO L84 FinitePrefix]: Finished finitePrefix Result has 53468 conditions, 32780 events. 6799/32780 cut-off events. For 18423/18618 co-relation queries the response was YES. Maximal size of possible extension queue 405. Compared 395136 event pairs, 3980 based on Foata normal form. 112/29764 useless extension candidates. Maximal degree in co-relation 53435. Up to 10183 conditions per place. [2022-07-22 21:33:27,513 INFO L132 encePairwiseOnDemand]: 549/581 looper letters, 360 selfloop transitions, 60 changer transitions 0/832 dead transitions. [2022-07-22 21:33:27,513 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 607 places, 832 transitions, 3635 flow [2022-07-22 21:33:27,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-22 21:33:27,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-07-22 21:33:27,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 9060 transitions. [2022-07-22 21:33:27,525 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7088092630261305 [2022-07-22 21:33:27,526 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 9060 transitions. [2022-07-22 21:33:27,526 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 9060 transitions. [2022-07-22 21:33:27,530 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:33:27,531 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 9060 transitions. [2022-07-22 21:33:27,543 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 411.8181818181818) internal successors, (9060), 22 states have internal predecessors, (9060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:33:27,556 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 581.0) internal successors, (13363), 23 states have internal predecessors, (13363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:33:27,558 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 581.0) internal successors, (13363), 23 states have internal predecessors, (13363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:33:27,558 INFO L186 Difference]: Start difference. First operand has 586 places, 638 transitions, 2052 flow. Second operand 22 states and 9060 transitions. [2022-07-22 21:33:27,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 607 places, 832 transitions, 3635 flow [2022-07-22 21:33:27,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 599 places, 832 transitions, 3614 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-07-22 21:33:27,608 INFO L242 Difference]: Finished difference. Result has 602 places, 655 transitions, 2397 flow [2022-07-22 21:33:27,609 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=581, PETRI_DIFFERENCE_MINUEND_FLOW=2034, PETRI_DIFFERENCE_MINUEND_PLACES=578, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=638, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=582, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=2397, PETRI_PLACES=602, PETRI_TRANSITIONS=655} [2022-07-22 21:33:27,610 INFO L279 CegarLoopForPetriNet]: 514 programPoint places, 88 predicate places. [2022-07-22 21:33:27,610 INFO L495 AbstractCegarLoop]: Abstraction has has 602 places, 655 transitions, 2397 flow [2022-07-22 21:33:27,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 398.75471698113205) internal successors, (21134), 53 states have internal predecessors, (21134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:33:27,613 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:33:27,613 INFO L200 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2022-07-22 21:33:27,631 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-22 21:33:27,813 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 [2022-07-22 21:33:27,814 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2022-07-22 21:33:27,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:33:27,814 INFO L85 PathProgramCache]: Analyzing trace with hash -1263386810, now seen corresponding path program 1 times [2022-07-22 21:33:27,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:33:27,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696395574] [2022-07-22 21:33:27,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:33:27,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:33:27,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:33:28,317 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-22 21:33:28,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:33:28,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696395574] [2022-07-22 21:33:28,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696395574] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 21:33:28,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [636861345] [2022-07-22 21:33:28,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:33:28,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 21:33:28,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 21:33:28,318 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) [2022-07-22 21:33:28,319 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-22 21:33:28,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:33:28,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 51 conjunts are in the unsatisfiable core [2022-07-22 21:33:28,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 21:33:28,842 INFO L356 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-07-22 21:33:28,842 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 33 [2022-07-22 21:33:28,944 INFO L356 Elim1Store]: treesize reduction 54, result has 34.1 percent of original size [2022-07-22 21:33:28,945 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 27 treesize of output 45 [2022-07-22 21:33:29,095 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2022-07-22 21:33:29,123 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2022-07-22 21:33:29,175 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2022-07-22 21:33:29,347 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2022-07-22 21:33:29,396 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2022-07-22 21:33:29,432 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2022-07-22 21:33:29,838 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2022-07-22 21:33:29,856 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2022-07-22 21:33:29,906 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2022-07-22 21:33:29,945 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2022-07-22 21:33:30,103 INFO L356 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2022-07-22 21:33:30,103 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 25 [2022-07-22 21:33:30,193 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2022-07-22 21:33:30,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 21:33:30,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 21:33:30,380 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2022-07-22 21:33:30,510 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2022-07-22 21:33:30,513 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-22 21:33:30,513 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 21:33:32,017 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-22 21:33:32,018 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-22 21:33:32,018 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-22 21:33:32,036 INFO L356 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2022-07-22 21:33:32,036 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 2352 treesize of output 2308 [2022-07-22 21:33:32,106 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 2174 treesize of output 2142 [2022-07-22 21:33:32,124 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 2142 treesize of output 2126 [2022-07-22 21:33:32,146 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-22 21:33:32,146 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 2134 treesize of output 2012 [2022-07-22 21:33:32,176 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1998 treesize of output 1934 [2022-07-22 21:33:32,653 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-22 21:33:32,654 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 1 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 27 case distinctions, treesize of input 174 treesize of output 372 [2022-07-22 21:33:33,862 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-22 21:33:33,863 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [636861345] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 21:33:33,863 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 21:33:33,863 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 21, 22] total 54 [2022-07-22 21:33:33,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502699554] [2022-07-22 21:33:33,863 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 21:33:33,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-07-22 21:33:33,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:33:33,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-07-22 21:33:33,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=523, Invalid=2278, Unknown=61, NotChecked=0, Total=2862 [2022-07-22 21:33:33,874 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 391 out of 581 [2022-07-22 21:33:33,882 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 602 places, 655 transitions, 2397 flow. Second operand has 54 states, 54 states have (on average 393.5925925925926) internal successors, (21254), 54 states have internal predecessors, (21254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:33:33,883 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:33:33,883 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 391 of 581 [2022-07-22 21:33:33,883 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:33:40,508 INFO L129 PetriNetUnfolder]: 6715/32747 cut-off events. [2022-07-22 21:33:40,508 INFO L130 PetriNetUnfolder]: For 23175/23526 co-relation queries the response was YES. [2022-07-22 21:33:40,778 INFO L84 FinitePrefix]: Finished finitePrefix Result has 53561 conditions, 32747 events. 6715/32747 cut-off events. For 23175/23526 co-relation queries the response was YES. Maximal size of possible extension queue 421. Compared 395787 event pairs, 3459 based on Foata normal form. 99/29619 useless extension candidates. Maximal degree in co-relation 53526. Up to 9037 conditions per place. [2022-07-22 21:33:40,896 INFO L132 encePairwiseOnDemand]: 542/581 looper letters, 404 selfloop transitions, 73 changer transitions 0/891 dead transitions. [2022-07-22 21:33:40,897 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 626 places, 891 transitions, 4068 flow [2022-07-22 21:33:40,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-07-22 21:33:40,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2022-07-22 21:33:40,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 10153 transitions. [2022-07-22 21:33:40,905 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6990017211703958 [2022-07-22 21:33:40,906 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 10153 transitions. [2022-07-22 21:33:40,906 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 10153 transitions. [2022-07-22 21:33:40,909 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:33:40,909 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 10153 transitions. [2022-07-22 21:33:40,923 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 406.12) internal successors, (10153), 25 states have internal predecessors, (10153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:33:40,935 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 581.0) internal successors, (15106), 26 states have internal predecessors, (15106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:33:40,937 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 581.0) internal successors, (15106), 26 states have internal predecessors, (15106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:33:40,937 INFO L186 Difference]: Start difference. First operand has 602 places, 655 transitions, 2397 flow. Second operand 25 states and 10153 transitions. [2022-07-22 21:33:40,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 626 places, 891 transitions, 4068 flow [2022-07-22 21:33:40,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 610 places, 891 transitions, 3875 flow, removed 60 selfloop flow, removed 16 redundant places. [2022-07-22 21:33:40,986 INFO L242 Difference]: Finished difference. Result has 618 places, 684 transitions, 2669 flow [2022-07-22 21:33:40,987 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=581, PETRI_DIFFERENCE_MINUEND_FLOW=2235, PETRI_DIFFERENCE_MINUEND_PLACES=586, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=655, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=595, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=2669, PETRI_PLACES=618, PETRI_TRANSITIONS=684} [2022-07-22 21:33:40,988 INFO L279 CegarLoopForPetriNet]: 514 programPoint places, 104 predicate places. [2022-07-22 21:33:40,988 INFO L495 AbstractCegarLoop]: Abstraction has has 618 places, 684 transitions, 2669 flow [2022-07-22 21:33:40,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 393.5925925925926) internal successors, (21254), 54 states have internal predecessors, (21254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:33:40,992 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:33:40,993 INFO L200 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:33:41,024 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-22 21:33:41,224 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 [2022-07-22 21:33:41,224 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2022-07-22 21:33:41,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:33:41,225 INFO L85 PathProgramCache]: Analyzing trace with hash 571573063, now seen corresponding path program 1 times [2022-07-22 21:33:41,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:33:41,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756468347] [2022-07-22 21:33:41,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:33:41,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:33:41,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:33:42,081 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-22 21:33:42,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:33:42,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756468347] [2022-07-22 21:33:42,082 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756468347] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 21:33:42,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [323321031] [2022-07-22 21:33:42,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:33:42,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 21:33:42,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 21:33:42,083 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) [2022-07-22 21:33:42,084 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-22 21:33:42,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:33:42,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 53 conjunts are in the unsatisfiable core [2022-07-22 21:33:42,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 21:33:42,551 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-07-22 21:33:42,552 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-07-22 21:33:42,618 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-07-22 21:33:42,619 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-07-22 21:33:42,688 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 23 treesize of output 23 [2022-07-22 21:33:42,708 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 23 treesize of output 23 [2022-07-22 21:33:42,729 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 23 treesize of output 23 [2022-07-22 21:33:42,813 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 23 treesize of output 23 [2022-07-22 21:33:42,826 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 23 treesize of output 23 [2022-07-22 21:33:42,847 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 23 treesize of output 23 [2022-07-22 21:33:43,042 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 23 treesize of output 23 [2022-07-22 21:33:43,065 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 23 treesize of output 23 [2022-07-22 21:33:43,080 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 23 treesize of output 23 [2022-07-22 21:33:43,098 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 23 treesize of output 23 [2022-07-22 21:33:43,136 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-22 21:33:43,137 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 11 treesize of output 11 [2022-07-22 21:33:43,209 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 23 treesize of output 23 [2022-07-22 21:33:43,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 21:33:43,360 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 23 treesize of output 23 [2022-07-22 21:33:43,556 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2022-07-22 21:33:43,559 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-22 21:33:43,559 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 21:33:43,706 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1358 (Array Int Int))) (let ((.cse0 (select (store |c_#memory_int| |c_~#pre~0.base| v_ArrVal_1358) |c_~#in~0.base|))) (or (not (<= (mod (select .cse0 |c_~#in~0.offset|) 256) 0)) (= (mod (select .cse0 (+ |c_~#in~0.offset| 1)) 256) 0)))) is different from false [2022-07-22 21:33:43,775 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1358 (Array Int Int)) (v_ArrVal_1357 (Array Int Int))) (let ((.cse0 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#worker~0#1.base| v_ArrVal_1357) |c_~#pre~0.base| v_ArrVal_1358) |c_~#in~0.base|))) (or (= (mod (select .cse0 (+ |c_~#in~0.offset| 1)) 256) 0) (not (<= (mod (select .cse0 |c_~#in~0.offset|) 256) 0))))) is different from false [2022-07-22 21:33:44,927 INFO L356 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-07-22 21:33:44,927 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1190 treesize of output 1160 [2022-07-22 21:33:44,949 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-22 21:33:44,951 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 835 treesize of output 823 [2022-07-22 21:33:44,962 INFO L356 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-07-22 21:33:44,962 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 1094 treesize of output 998 [2022-07-22 21:33:44,983 INFO L356 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-07-22 21:33:44,983 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 998 treesize of output 974 [2022-07-22 21:33:44,998 INFO L356 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-07-22 21:33:44,998 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 974 treesize of output 926 [2022-07-22 21:33:45,411 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-22 21:33:45,411 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 93 treesize of output 163 [2022-07-22 21:33:45,592 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 1 not checked. [2022-07-22 21:33:45,592 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [323321031] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 21:33:45,592 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 21:33:45,593 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 18, 21] total 54 [2022-07-22 21:33:45,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720313468] [2022-07-22 21:33:45,593 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 21:33:45,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-07-22 21:33:45,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:33:45,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-07-22 21:33:45,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=438, Invalid=2174, Unknown=48, NotChecked=202, Total=2862 [2022-07-22 21:33:45,602 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 390 out of 581 [2022-07-22 21:33:45,612 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 618 places, 684 transitions, 2669 flow. Second operand has 54 states, 54 states have (on average 393.22222222222223) internal successors, (21234), 54 states have internal predecessors, (21234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:33:45,613 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:33:45,613 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 390 of 581 [2022-07-22 21:33:45,613 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:33:53,676 INFO L129 PetriNetUnfolder]: 6743/32819 cut-off events. [2022-07-22 21:33:53,676 INFO L130 PetriNetUnfolder]: For 25793/26080 co-relation queries the response was YES. [2022-07-22 21:33:54,007 INFO L84 FinitePrefix]: Finished finitePrefix Result has 56012 conditions, 32819 events. 6743/32819 cut-off events. For 25793/26080 co-relation queries the response was YES. Maximal size of possible extension queue 383. Compared 394145 event pairs, 3103 based on Foata normal form. 156/29884 useless extension candidates. Maximal degree in co-relation 55969. Up to 8798 conditions per place. [2022-07-22 21:33:54,098 INFO L132 encePairwiseOnDemand]: 546/581 looper letters, 434 selfloop transitions, 84 changer transitions 0/935 dead transitions. [2022-07-22 21:33:54,098 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 639 places, 935 transitions, 4526 flow [2022-07-22 21:33:54,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-07-22 21:33:54,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-07-22 21:33:54,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 9380 transitions. [2022-07-22 21:33:54,105 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7019381875327396 [2022-07-22 21:33:54,105 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 9380 transitions. [2022-07-22 21:33:54,105 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 9380 transitions. [2022-07-22 21:33:54,107 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:33:54,107 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 9380 transitions. [2022-07-22 21:33:54,117 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 407.82608695652175) internal successors, (9380), 23 states have internal predecessors, (9380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:33:54,132 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 581.0) internal successors, (13944), 24 states have internal predecessors, (13944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:33:54,134 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 581.0) internal successors, (13944), 24 states have internal predecessors, (13944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:33:54,134 INFO L186 Difference]: Start difference. First operand has 618 places, 684 transitions, 2669 flow. Second operand 23 states and 9380 transitions. [2022-07-22 21:33:54,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 639 places, 935 transitions, 4526 flow [2022-07-22 21:33:54,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 624 places, 935 transitions, 4482 flow, removed 1 selfloop flow, removed 15 redundant places. [2022-07-22 21:33:54,188 INFO L242 Difference]: Finished difference. Result has 628 places, 705 transitions, 3070 flow [2022-07-22 21:33:54,189 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=581, PETRI_DIFFERENCE_MINUEND_FLOW=2580, PETRI_DIFFERENCE_MINUEND_PLACES=602, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=681, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=604, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=3070, PETRI_PLACES=628, PETRI_TRANSITIONS=705} [2022-07-22 21:33:54,190 INFO L279 CegarLoopForPetriNet]: 514 programPoint places, 114 predicate places. [2022-07-22 21:33:54,190 INFO L495 AbstractCegarLoop]: Abstraction has has 628 places, 705 transitions, 3070 flow [2022-07-22 21:33:54,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 393.22222222222223) internal successors, (21234), 54 states have internal predecessors, (21234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:33:54,193 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:33:54,193 INFO L200 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2022-07-22 21:33:54,210 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-07-22 21:33:54,393 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 [2022-07-22 21:33:54,394 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2022-07-22 21:33:54,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:33:54,394 INFO L85 PathProgramCache]: Analyzing trace with hash -1821726937, now seen corresponding path program 1 times [2022-07-22 21:33:54,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:33:54,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198043420] [2022-07-22 21:33:54,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:33:54,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:33:54,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:33:55,122 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-22 21:33:55,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:33:55,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198043420] [2022-07-22 21:33:55,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198043420] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 21:33:55,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1241478723] [2022-07-22 21:33:55,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:33:55,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 21:33:55,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 21:33:55,125 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) [2022-07-22 21:33:55,126 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-22 21:33:55,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:33:55,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 49 conjunts are in the unsatisfiable core [2022-07-22 21:33:55,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 21:33:55,549 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-07-22 21:33:55,550 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-07-22 21:33:55,608 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-07-22 21:33:55,608 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-07-22 21:33:55,670 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 23 treesize of output 23 [2022-07-22 21:33:55,686 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 23 treesize of output 23 [2022-07-22 21:33:55,701 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 23 treesize of output 23 [2022-07-22 21:33:55,761 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 23 treesize of output 23 [2022-07-22 21:33:55,781 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 23 treesize of output 23 [2022-07-22 21:33:55,797 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 23 treesize of output 23