./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/popl20-more-sum-array-hom.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 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/weaver/popl20-more-sum-array-hom.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0307f20ae0363cc6fed70ae0937c5000167639ab486b68a523e3313ccdd28e28 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 09:12:06,182 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 09:12:06,183 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 09:12:06,227 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 09:12:06,228 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 09:12:06,229 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 09:12:06,231 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 09:12:06,234 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 09:12:06,235 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 09:12:06,239 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 09:12:06,240 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 09:12:06,242 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 09:12:06,242 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 09:12:06,243 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 09:12:06,244 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 09:12:06,248 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 09:12:06,249 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 09:12:06,250 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 09:12:06,251 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 09:12:06,256 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 09:12:06,256 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 09:12:06,257 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 09:12:06,259 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 09:12:06,259 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 09:12:06,260 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 09:12:06,265 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 09:12:06,266 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 09:12:06,266 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 09:12:06,267 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 09:12:06,267 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 09:12:06,268 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 09:12:06,268 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 09:12:06,269 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 09:12:06,270 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 09:12:06,271 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 09:12:06,271 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 09:12:06,271 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 09:12:06,272 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 09:12:06,272 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 09:12:06,272 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 09:12:06,273 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 09:12:06,274 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 09:12:06,278 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 09:12:06,304 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 09:12:06,304 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 09:12:06,305 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 09:12:06,305 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 09:12:06,305 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 09:12:06,305 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 09:12:06,306 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 09:12:06,306 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 09:12:06,306 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 09:12:06,307 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 09:12:06,307 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 09:12:06,307 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 09:12:06,307 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 09:12:06,308 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 09:12:06,308 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 09:12:06,308 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 09:12:06,308 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 09:12:06,308 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 09:12:06,308 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 09:12:06,309 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 09:12:06,309 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 09:12:06,309 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 09:12:06,309 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 09:12:06,309 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 09:12:06,309 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 09:12:06,309 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 09:12:06,310 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 09:12:06,310 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 09:12:06,310 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 09:12:06,310 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 09:12:06,310 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 09:12:06,310 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 09:12:06,311 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 09:12:06,311 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0307f20ae0363cc6fed70ae0937c5000167639ab486b68a523e3313ccdd28e28 [2022-07-21 09:12:06,569 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 09:12:06,588 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 09:12:06,590 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 09:12:06,591 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 09:12:06,592 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 09:12:06,593 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-more-sum-array-hom.wvr.c [2022-07-21 09:12:06,655 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca118c6b7/235b40f2bfe04716b3256fe652f006fe/FLAG25086cd24 [2022-07-21 09:12:07,000 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 09:12:07,000 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-sum-array-hom.wvr.c [2022-07-21 09:12:07,005 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca118c6b7/235b40f2bfe04716b3256fe652f006fe/FLAG25086cd24 [2022-07-21 09:12:07,018 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca118c6b7/235b40f2bfe04716b3256fe652f006fe [2022-07-21 09:12:07,020 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 09:12:07,021 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 09:12:07,023 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 09:12:07,023 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 09:12:07,026 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 09:12:07,026 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 09:12:07" (1/1) ... [2022-07-21 09:12:07,027 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f44d0c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:12:07, skipping insertion in model container [2022-07-21 09:12:07,027 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 09:12:07" (1/1) ... [2022-07-21 09:12:07,031 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 09:12:07,046 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 09:12:07,246 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/weaver/popl20-more-sum-array-hom.wvr.c[2396,2409] [2022-07-21 09:12:07,258 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 09:12:07,265 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 09:12:07,297 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/weaver/popl20-more-sum-array-hom.wvr.c[2396,2409] [2022-07-21 09:12:07,302 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 09:12:07,319 INFO L208 MainTranslator]: Completed translation [2022-07-21 09:12:07,319 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:12:07 WrapperNode [2022-07-21 09:12:07,320 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 09:12:07,321 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 09:12:07,321 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 09:12:07,321 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 09:12:07,326 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:12:07" (1/1) ... [2022-07-21 09:12:07,338 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:12:07" (1/1) ... [2022-07-21 09:12:07,360 INFO L137 Inliner]: procedures = 25, calls = 34, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 102 [2022-07-21 09:12:07,361 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 09:12:07,361 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 09:12:07,361 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 09:12:07,361 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 09:12:07,367 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:12:07" (1/1) ... [2022-07-21 09:12:07,367 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:12:07" (1/1) ... [2022-07-21 09:12:07,378 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:12:07" (1/1) ... [2022-07-21 09:12:07,379 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:12:07" (1/1) ... [2022-07-21 09:12:07,389 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:12:07" (1/1) ... [2022-07-21 09:12:07,396 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:12:07" (1/1) ... [2022-07-21 09:12:07,398 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:12:07" (1/1) ... [2022-07-21 09:12:07,403 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 09:12:07,404 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 09:12:07,406 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 09:12:07,406 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 09:12:07,406 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:12:07" (1/1) ... [2022-07-21 09:12:07,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 09:12:07,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:12:07,453 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) [2022-07-21 09:12:07,467 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 [2022-07-21 09:12:07,520 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 09:12:07,520 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-21 09:12:07,520 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-21 09:12:07,521 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-21 09:12:07,521 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-21 09:12:07,521 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-21 09:12:07,522 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-21 09:12:07,525 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-21 09:12:07,525 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-07-21 09:12:07,525 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-07-21 09:12:07,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 09:12:07,526 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-21 09:12:07,526 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 09:12:07,526 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 09:12:07,526 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-21 09:12:07,527 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-21 09:12:07,590 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 09:12:07,591 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 09:12:07,769 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 09:12:07,776 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 09:12:07,776 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-07-21 09:12:07,778 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 09:12:07 BoogieIcfgContainer [2022-07-21 09:12:07,778 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 09:12:07,812 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 09:12:07,812 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 09:12:07,815 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 09:12:07,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 09:12:07" (1/3) ... [2022-07-21 09:12:07,816 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fccfb8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 09:12:07, skipping insertion in model container [2022-07-21 09:12:07,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:12:07" (2/3) ... [2022-07-21 09:12:07,817 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fccfb8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 09:12:07, skipping insertion in model container [2022-07-21 09:12:07,823 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 09:12:07" (3/3) ... [2022-07-21 09:12:07,823 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-more-sum-array-hom.wvr.c [2022-07-21 09:12:07,827 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-21 09:12:07,837 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 09:12:07,850 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 09:12:07,850 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-21 09:12:07,907 INFO L135 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-07-21 09:12:07,946 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 158 places, 160 transitions, 344 flow [2022-07-21 09:12:08,018 INFO L129 PetriNetUnfolder]: 12/157 cut-off events. [2022-07-21 09:12:08,020 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-21 09:12:08,023 INFO L84 FinitePrefix]: Finished finitePrefix Result has 170 conditions, 157 events. 12/157 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 106 event pairs, 0 based on Foata normal form. 0/144 useless extension candidates. Maximal degree in co-relation 117. Up to 2 conditions per place. [2022-07-21 09:12:08,024 INFO L82 GeneralOperation]: Start removeDead. Operand has 158 places, 160 transitions, 344 flow [2022-07-21 09:12:08,030 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 144 places, 146 transitions, 310 flow [2022-07-21 09:12:08,041 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 09:12:08,047 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@1fe6ff53, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@586c56af [2022-07-21 09:12:08,048 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-07-21 09:12:08,090 INFO L129 PetriNetUnfolder]: 12/145 cut-off events. [2022-07-21 09:12:08,095 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-21 09:12:08,095 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:12:08,096 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:12:08,096 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-21 09:12:08,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:12:08,100 INFO L85 PathProgramCache]: Analyzing trace with hash 562632695, now seen corresponding path program 1 times [2022-07-21 09:12:08,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:12:08,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715100894] [2022-07-21 09:12:08,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:12:08,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:12:08,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:12:08,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:12:08,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:12:08,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715100894] [2022-07-21 09:12:08,284 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715100894] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:12:08,284 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:12:08,284 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 09:12:08,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326565489] [2022-07-21 09:12:08,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:12:08,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-21 09:12:08,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:12:08,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-21 09:12:08,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-21 09:12:08,319 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 160 [2022-07-21 09:12:08,322 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 146 transitions, 310 flow. Second operand has 2 states, 2 states have (on average 148.5) internal successors, (297), 2 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:12:08,322 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:12:08,324 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 160 [2022-07-21 09:12:08,325 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:12:08,374 INFO L129 PetriNetUnfolder]: 4/138 cut-off events. [2022-07-21 09:12:08,374 INFO L130 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2022-07-21 09:12:08,375 INFO L84 FinitePrefix]: Finished finitePrefix Result has 158 conditions, 138 events. 4/138 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 97 event pairs, 0 based on Foata normal form. 14/144 useless extension candidates. Maximal degree in co-relation 113. Up to 7 conditions per place. [2022-07-21 09:12:08,377 INFO L132 encePairwiseOnDemand]: 152/160 looper letters, 6 selfloop transitions, 0 changer transitions 4/138 dead transitions. [2022-07-21 09:12:08,377 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 138 transitions, 306 flow [2022-07-21 09:12:08,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-21 09:12:08,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-07-21 09:12:08,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 304 transitions. [2022-07-21 09:12:08,390 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.95 [2022-07-21 09:12:08,391 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 304 transitions. [2022-07-21 09:12:08,391 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 304 transitions. [2022-07-21 09:12:08,392 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:12:08,394 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 304 transitions. [2022-07-21 09:12:08,396 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 152.0) internal successors, (304), 2 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:12:08,400 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 160.0) internal successors, (480), 3 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:12:08,400 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 160.0) internal successors, (480), 3 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:12:08,401 INFO L186 Difference]: Start difference. First operand has 144 places, 146 transitions, 310 flow. Second operand 2 states and 304 transitions. [2022-07-21 09:12:08,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 138 transitions, 306 flow [2022-07-21 09:12:08,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 138 transitions, 294 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-07-21 09:12:08,407 INFO L242 Difference]: Finished difference. Result has 139 places, 134 transitions, 274 flow [2022-07-21 09:12:08,408 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=274, PETRI_PLACES=139, PETRI_TRANSITIONS=134} [2022-07-21 09:12:08,410 INFO L279 CegarLoopForPetriNet]: 144 programPoint places, -5 predicate places. [2022-07-21 09:12:08,411 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 134 transitions, 274 flow [2022-07-21 09:12:08,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 148.5) internal successors, (297), 2 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:12:08,411 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:12:08,411 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:12:08,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 09:12:08,412 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-21 09:12:08,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:12:08,412 INFO L85 PathProgramCache]: Analyzing trace with hash 314341918, now seen corresponding path program 1 times [2022-07-21 09:12:08,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:12:08,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525714223] [2022-07-21 09:12:08,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:12:08,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:12:08,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:12:08,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:12:08,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:12:08,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525714223] [2022-07-21 09:12:08,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525714223] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:12:08,616 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:12:08,616 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 09:12:08,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713953154] [2022-07-21 09:12:08,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:12:08,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 09:12:08,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:12:08,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 09:12:08,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-07-21 09:12:08,620 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 160 [2022-07-21 09:12:08,621 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 134 transitions, 274 flow. Second operand has 7 states, 7 states have (on average 122.57142857142857) internal successors, (858), 7 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:12:08,621 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:12:08,621 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 160 [2022-07-21 09:12:08,622 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:12:08,759 INFO L129 PetriNetUnfolder]: 53/381 cut-off events. [2022-07-21 09:12:08,760 INFO L130 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2022-07-21 09:12:08,762 INFO L84 FinitePrefix]: Finished finitePrefix Result has 502 conditions, 381 events. 53/381 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1432 event pairs, 9 based on Foata normal form. 1/357 useless extension candidates. Maximal degree in co-relation 499. Up to 49 conditions per place. [2022-07-21 09:12:08,763 INFO L132 encePairwiseOnDemand]: 151/160 looper letters, 47 selfloop transitions, 9 changer transitions 4/166 dead transitions. [2022-07-21 09:12:08,764 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 166 transitions, 470 flow [2022-07-21 09:12:08,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 09:12:08,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-21 09:12:08,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 894 transitions. [2022-07-21 09:12:08,768 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7982142857142858 [2022-07-21 09:12:08,768 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 894 transitions. [2022-07-21 09:12:08,768 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 894 transitions. [2022-07-21 09:12:08,769 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:12:08,769 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 894 transitions. [2022-07-21 09:12:08,771 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 127.71428571428571) internal successors, (894), 7 states have internal predecessors, (894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:12:08,774 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 160.0) internal successors, (1280), 8 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:12:08,775 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 160.0) internal successors, (1280), 8 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:12:08,775 INFO L186 Difference]: Start difference. First operand has 139 places, 134 transitions, 274 flow. Second operand 7 states and 894 transitions. [2022-07-21 09:12:08,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 166 transitions, 470 flow [2022-07-21 09:12:08,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 166 transitions, 470 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-21 09:12:08,781 INFO L242 Difference]: Finished difference. Result has 145 places, 140 transitions, 327 flow [2022-07-21 09:12:08,781 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=327, PETRI_PLACES=145, PETRI_TRANSITIONS=140} [2022-07-21 09:12:08,782 INFO L279 CegarLoopForPetriNet]: 144 programPoint places, 1 predicate places. [2022-07-21 09:12:08,782 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 140 transitions, 327 flow [2022-07-21 09:12:08,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 122.57142857142857) internal successors, (858), 7 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:12:08,783 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:12:08,784 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:12:08,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 09:12:08,784 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-21 09:12:08,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:12:08,785 INFO L85 PathProgramCache]: Analyzing trace with hash 1348001824, now seen corresponding path program 1 times [2022-07-21 09:12:08,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:12:08,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135312213] [2022-07-21 09:12:08,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:12:08,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:12:08,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:12:08,947 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:12:08,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:12:08,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135312213] [2022-07-21 09:12:08,949 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135312213] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:12:08,949 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:12:08,949 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 09:12:08,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506822286] [2022-07-21 09:12:08,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:12:08,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 09:12:08,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:12:08,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 09:12:08,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-21 09:12:08,952 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 160 [2022-07-21 09:12:08,953 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 140 transitions, 327 flow. Second operand has 7 states, 7 states have (on average 125.42857142857143) internal successors, (878), 7 states have internal predecessors, (878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:12:08,953 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:12:08,953 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 160 [2022-07-21 09:12:08,953 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:12:09,149 INFO L129 PetriNetUnfolder]: 189/805 cut-off events. [2022-07-21 09:12:09,150 INFO L130 PetriNetUnfolder]: For 69/80 co-relation queries the response was YES. [2022-07-21 09:12:09,155 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1287 conditions, 805 events. 189/805 cut-off events. For 69/80 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 4627 event pairs, 105 based on Foata normal form. 0/676 useless extension candidates. Maximal degree in co-relation 1279. Up to 252 conditions per place. [2022-07-21 09:12:09,159 INFO L132 encePairwiseOnDemand]: 151/160 looper letters, 41 selfloop transitions, 8 changer transitions 0/160 dead transitions. [2022-07-21 09:12:09,159 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 160 transitions, 473 flow [2022-07-21 09:12:09,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 09:12:09,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-07-21 09:12:09,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1026 transitions. [2022-07-21 09:12:09,162 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8015625 [2022-07-21 09:12:09,162 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1026 transitions. [2022-07-21 09:12:09,162 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1026 transitions. [2022-07-21 09:12:09,163 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:12:09,163 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1026 transitions. [2022-07-21 09:12:09,165 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 128.25) internal successors, (1026), 8 states have internal predecessors, (1026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:12:09,166 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 160.0) internal successors, (1440), 9 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:12:09,167 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 160.0) internal successors, (1440), 9 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:12:09,167 INFO L186 Difference]: Start difference. First operand has 145 places, 140 transitions, 327 flow. Second operand 8 states and 1026 transitions. [2022-07-21 09:12:09,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 160 transitions, 473 flow [2022-07-21 09:12:09,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 160 transitions, 469 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-07-21 09:12:09,174 INFO L242 Difference]: Finished difference. Result has 151 places, 143 transitions, 359 flow [2022-07-21 09:12:09,175 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=323, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=359, PETRI_PLACES=151, PETRI_TRANSITIONS=143} [2022-07-21 09:12:09,176 INFO L279 CegarLoopForPetriNet]: 144 programPoint places, 7 predicate places. [2022-07-21 09:12:09,177 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 143 transitions, 359 flow [2022-07-21 09:12:09,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 125.42857142857143) internal successors, (878), 7 states have internal predecessors, (878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:12:09,177 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:12:09,177 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:12:09,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 09:12:09,178 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-21 09:12:09,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:12:09,179 INFO L85 PathProgramCache]: Analyzing trace with hash -163412244, now seen corresponding path program 1 times [2022-07-21 09:12:09,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:12:09,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625620030] [2022-07-21 09:12:09,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:12:09,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:12:09,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:12:09,340 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:12:09,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:12:09,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625620030] [2022-07-21 09:12:09,340 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625620030] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:12:09,340 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:12:09,341 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 09:12:09,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528326908] [2022-07-21 09:12:09,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:12:09,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 09:12:09,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:12:09,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 09:12:09,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-07-21 09:12:09,343 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 160 [2022-07-21 09:12:09,344 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 143 transitions, 359 flow. Second operand has 10 states, 10 states have (on average 104.1) internal successors, (1041), 10 states have internal predecessors, (1041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:12:09,344 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:12:09,344 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 160 [2022-07-21 09:12:09,345 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:12:09,811 INFO L129 PetriNetUnfolder]: 852/2288 cut-off events. [2022-07-21 09:12:09,811 INFO L130 PetriNetUnfolder]: For 316/338 co-relation queries the response was YES. [2022-07-21 09:12:09,819 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4006 conditions, 2288 events. 852/2288 cut-off events. For 316/338 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 17393 event pairs, 597 based on Foata normal form. 21/1986 useless extension candidates. Maximal degree in co-relation 3996. Up to 1077 conditions per place. [2022-07-21 09:12:09,829 INFO L132 encePairwiseOnDemand]: 146/160 looper letters, 65 selfloop transitions, 13 changer transitions 0/172 dead transitions. [2022-07-21 09:12:09,829 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 172 transitions, 583 flow [2022-07-21 09:12:09,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-21 09:12:09,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-21 09:12:09,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1379 transitions. [2022-07-21 09:12:09,844 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6629807692307692 [2022-07-21 09:12:09,845 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1379 transitions. [2022-07-21 09:12:09,845 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1379 transitions. [2022-07-21 09:12:09,846 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:12:09,846 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1379 transitions. [2022-07-21 09:12:09,851 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 106.07692307692308) internal successors, (1379), 13 states have internal predecessors, (1379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:12:09,856 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 160.0) internal successors, (2240), 14 states have internal predecessors, (2240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:12:09,857 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 160.0) internal successors, (2240), 14 states have internal predecessors, (2240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:12:09,857 INFO L186 Difference]: Start difference. First operand has 151 places, 143 transitions, 359 flow. Second operand 13 states and 1379 transitions. [2022-07-21 09:12:09,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 172 transitions, 583 flow [2022-07-21 09:12:09,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 172 transitions, 573 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-07-21 09:12:09,861 INFO L242 Difference]: Finished difference. Result has 164 places, 147 transitions, 402 flow [2022-07-21 09:12:09,862 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=349, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=402, PETRI_PLACES=164, PETRI_TRANSITIONS=147} [2022-07-21 09:12:09,863 INFO L279 CegarLoopForPetriNet]: 144 programPoint places, 20 predicate places. [2022-07-21 09:12:09,868 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 147 transitions, 402 flow [2022-07-21 09:12:09,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 104.1) internal successors, (1041), 10 states have internal predecessors, (1041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:12:09,868 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:12:09,869 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:12:09,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-21 09:12:09,869 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-21 09:12:09,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:12:09,870 INFO L85 PathProgramCache]: Analyzing trace with hash -1418192672, now seen corresponding path program 1 times [2022-07-21 09:12:09,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:12:09,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496219291] [2022-07-21 09:12:09,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:12:09,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:12:09,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:12:10,069 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:12:10,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:12:10,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496219291] [2022-07-21 09:12:10,070 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496219291] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:12:10,070 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:12:10,070 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 09:12:10,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203489079] [2022-07-21 09:12:10,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:12:10,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 09:12:10,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:12:10,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 09:12:10,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-21 09:12:10,072 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 160 [2022-07-21 09:12:10,073 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 147 transitions, 402 flow. Second operand has 10 states, 10 states have (on average 105.0) internal successors, (1050), 10 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:12:10,073 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:12:10,074 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 160 [2022-07-21 09:12:10,074 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:12:10,444 INFO L129 PetriNetUnfolder]: 640/1571 cut-off events. [2022-07-21 09:12:10,444 INFO L130 PetriNetUnfolder]: For 402/420 co-relation queries the response was YES. [2022-07-21 09:12:10,448 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3031 conditions, 1571 events. 640/1571 cut-off events. For 402/420 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 10407 event pairs, 371 based on Foata normal form. 18/1416 useless extension candidates. Maximal degree in co-relation 3016. Up to 747 conditions per place. [2022-07-21 09:12:10,457 INFO L132 encePairwiseOnDemand]: 147/160 looper letters, 49 selfloop transitions, 7 changer transitions 21/171 dead transitions. [2022-07-21 09:12:10,457 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 171 transitions, 614 flow [2022-07-21 09:12:10,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-21 09:12:10,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-07-21 09:12:10,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1288 transitions. [2022-07-21 09:12:10,460 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6708333333333333 [2022-07-21 09:12:10,460 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1288 transitions. [2022-07-21 09:12:10,460 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1288 transitions. [2022-07-21 09:12:10,461 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:12:10,461 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1288 transitions. [2022-07-21 09:12:10,463 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 107.33333333333333) internal successors, (1288), 12 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:12:10,465 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 160.0) internal successors, (2080), 13 states have internal predecessors, (2080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:12:10,466 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 160.0) internal successors, (2080), 13 states have internal predecessors, (2080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:12:10,466 INFO L186 Difference]: Start difference. First operand has 164 places, 147 transitions, 402 flow. Second operand 12 states and 1288 transitions. [2022-07-21 09:12:10,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 171 transitions, 614 flow [2022-07-21 09:12:10,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 171 transitions, 597 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-07-21 09:12:10,471 INFO L242 Difference]: Finished difference. Result has 170 places, 141 transitions, 365 flow [2022-07-21 09:12:10,471 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=385, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=365, PETRI_PLACES=170, PETRI_TRANSITIONS=141} [2022-07-21 09:12:10,473 INFO L279 CegarLoopForPetriNet]: 144 programPoint places, 26 predicate places. [2022-07-21 09:12:10,473 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 141 transitions, 365 flow [2022-07-21 09:12:10,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 105.0) internal successors, (1050), 10 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:12:10,473 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:12:10,473 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:12:10,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-21 09:12:10,474 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-21 09:12:10,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:12:10,475 INFO L85 PathProgramCache]: Analyzing trace with hash -813756629, now seen corresponding path program 1 times [2022-07-21 09:12:10,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:12:10,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225627479] [2022-07-21 09:12:10,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:12:10,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:12:10,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:12:10,553 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-21 09:12:10,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:12:10,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225627479] [2022-07-21 09:12:10,553 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225627479] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:12:10,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1340110730] [2022-07-21 09:12:10,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:12:10,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:12:10,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:12:10,556 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) [2022-07-21 09:12:10,561 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-21 09:12:10,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:12:10,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-21 09:12:10,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:12:10,893 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-21 09:12:10,893 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 09:12:11,114 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-21 09:12:11,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1340110730] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-21 09:12:11,115 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-21 09:12:11,115 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10, 9] total 18 [2022-07-21 09:12:11,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881801833] [2022-07-21 09:12:11,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:12:11,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 09:12:11,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:12:11,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 09:12:11,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2022-07-21 09:12:11,119 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 160 [2022-07-21 09:12:11,120 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 141 transitions, 365 flow. Second operand has 9 states, 9 states have (on average 117.22222222222223) internal successors, (1055), 9 states have internal predecessors, (1055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:12:11,120 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:12:11,120 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 160 [2022-07-21 09:12:11,120 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:12:11,542 INFO L129 PetriNetUnfolder]: 1398/3107 cut-off events. [2022-07-21 09:12:11,543 INFO L130 PetriNetUnfolder]: For 902/903 co-relation queries the response was YES. [2022-07-21 09:12:11,551 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6376 conditions, 3107 events. 1398/3107 cut-off events. For 902/903 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 24298 event pairs, 433 based on Foata normal form. 9/3029 useless extension candidates. Maximal degree in co-relation 6359. Up to 619 conditions per place. [2022-07-21 09:12:11,562 INFO L132 encePairwiseOnDemand]: 149/160 looper letters, 72 selfloop transitions, 17 changer transitions 0/192 dead transitions. [2022-07-21 09:12:11,563 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 192 transitions, 688 flow [2022-07-21 09:12:11,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-21 09:12:11,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-07-21 09:12:11,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1343 transitions. [2022-07-21 09:12:11,565 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7630681818181818 [2022-07-21 09:12:11,565 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1343 transitions. [2022-07-21 09:12:11,565 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1343 transitions. [2022-07-21 09:12:11,566 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:12:11,566 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1343 transitions. [2022-07-21 09:12:11,587 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 122.0909090909091) internal successors, (1343), 11 states have internal predecessors, (1343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:12:11,589 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 160.0) internal successors, (1920), 12 states have internal predecessors, (1920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:12:11,589 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 160.0) internal successors, (1920), 12 states have internal predecessors, (1920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:12:11,589 INFO L186 Difference]: Start difference. First operand has 170 places, 141 transitions, 365 flow. Second operand 11 states and 1343 transitions. [2022-07-21 09:12:11,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 192 transitions, 688 flow [2022-07-21 09:12:11,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 192 transitions, 627 flow, removed 23 selfloop flow, removed 14 redundant places. [2022-07-21 09:12:11,598 INFO L242 Difference]: Finished difference. Result has 159 places, 153 transitions, 428 flow [2022-07-21 09:12:11,598 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=428, PETRI_PLACES=159, PETRI_TRANSITIONS=153} [2022-07-21 09:12:11,598 INFO L279 CegarLoopForPetriNet]: 144 programPoint places, 15 predicate places. [2022-07-21 09:12:11,599 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 153 transitions, 428 flow [2022-07-21 09:12:11,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 117.22222222222223) internal successors, (1055), 9 states have internal predecessors, (1055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:12:11,599 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:12:11,599 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:12:11,630 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-21 09:12:11,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-07-21 09:12:11,818 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-21 09:12:11,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:12:11,818 INFO L85 PathProgramCache]: Analyzing trace with hash 2073619073, now seen corresponding path program 2 times [2022-07-21 09:12:11,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:12:11,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826135594] [2022-07-21 09:12:11,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:12:11,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:12:11,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:12:11,894 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-21 09:12:11,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:12:11,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826135594] [2022-07-21 09:12:11,895 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826135594] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:12:11,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [78276995] [2022-07-21 09:12:11,895 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-21 09:12:11,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:12:11,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:12:11,896 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) [2022-07-21 09:12:11,898 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-21 09:12:11,971 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-21 09:12:11,971 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 09:12:11,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-21 09:12:11,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:12:12,054 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-21 09:12:12,055 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 09:12:12,122 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-21 09:12:12,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [78276995] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 09:12:12,122 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 09:12:12,122 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 7] total 17 [2022-07-21 09:12:12,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671783375] [2022-07-21 09:12:12,123 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 09:12:12,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-07-21 09:12:12,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:12:12,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-07-21 09:12:12,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2022-07-21 09:12:12,125 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 160 [2022-07-21 09:12:12,126 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 153 transitions, 428 flow. Second operand has 17 states, 17 states have (on average 113.52941176470588) internal successors, (1930), 17 states have internal predecessors, (1930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:12:12,127 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:12:12,127 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 160 [2022-07-21 09:12:12,127 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:12:13,385 INFO L129 PetriNetUnfolder]: 3938/7969 cut-off events. [2022-07-21 09:12:13,385 INFO L130 PetriNetUnfolder]: For 3023/3034 co-relation queries the response was YES. [2022-07-21 09:12:13,403 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18175 conditions, 7969 events. 3938/7969 cut-off events. For 3023/3034 co-relation queries the response was YES. Maximal size of possible extension queue 462. Compared 67118 event pairs, 195 based on Foata normal form. 21/7559 useless extension candidates. Maximal degree in co-relation 18162. Up to 727 conditions per place. [2022-07-21 09:12:13,431 INFO L132 encePairwiseOnDemand]: 144/160 looper letters, 219 selfloop transitions, 88 changer transitions 0/406 dead transitions. [2022-07-21 09:12:13,432 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 406 transitions, 1822 flow [2022-07-21 09:12:13,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-21 09:12:13,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-07-21 09:12:13,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2927 transitions. [2022-07-21 09:12:13,436 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7622395833333333 [2022-07-21 09:12:13,436 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2927 transitions. [2022-07-21 09:12:13,436 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2927 transitions. [2022-07-21 09:12:13,438 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:12:13,438 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2927 transitions. [2022-07-21 09:12:13,442 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 121.95833333333333) internal successors, (2927), 24 states have internal predecessors, (2927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:12:13,446 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 160.0) internal successors, (4000), 25 states have internal predecessors, (4000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:12:13,447 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 160.0) internal successors, (4000), 25 states have internal predecessors, (4000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:12:13,447 INFO L186 Difference]: Start difference. First operand has 159 places, 153 transitions, 428 flow. Second operand 24 states and 2927 transitions. [2022-07-21 09:12:13,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 406 transitions, 1822 flow [2022-07-21 09:12:13,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 406 transitions, 1817 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-07-21 09:12:13,478 INFO L242 Difference]: Finished difference. Result has 197 places, 234 transitions, 1164 flow [2022-07-21 09:12:13,478 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=423, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1164, PETRI_PLACES=197, PETRI_TRANSITIONS=234} [2022-07-21 09:12:13,478 INFO L279 CegarLoopForPetriNet]: 144 programPoint places, 53 predicate places. [2022-07-21 09:12:13,478 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 234 transitions, 1164 flow [2022-07-21 09:12:13,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 113.52941176470588) internal successors, (1930), 17 states have internal predecessors, (1930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:12:13,479 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:12:13,479 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:12:13,498 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-21 09:12:13,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-07-21 09:12:13,697 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-21 09:12:13,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:12:13,697 INFO L85 PathProgramCache]: Analyzing trace with hash -301515547, now seen corresponding path program 1 times [2022-07-21 09:12:13,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:12:13,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409131347] [2022-07-21 09:12:13,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:12:13,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:12:13,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:12:13,770 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-21 09:12:13,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:12:13,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409131347] [2022-07-21 09:12:13,771 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409131347] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:12:13,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1660054647] [2022-07-21 09:12:13,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:12:13,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:12:13,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:12:13,772 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) [2022-07-21 09:12:13,774 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-21 09:12:13,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:12:13,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-21 09:12:13,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:12:13,979 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-21 09:12:13,979 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 09:12:14,103 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-21 09:12:14,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1660054647] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-21 09:12:14,104 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-21 09:12:14,104 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 7] total 14 [2022-07-21 09:12:14,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808655159] [2022-07-21 09:12:14,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:12:14,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 09:12:14,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:12:14,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 09:12:14,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2022-07-21 09:12:14,106 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 160 [2022-07-21 09:12:14,107 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 234 transitions, 1164 flow. Second operand has 7 states, 7 states have (on average 125.42857142857143) internal successors, (878), 7 states have internal predecessors, (878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:12:14,107 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:12:14,107 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 160 [2022-07-21 09:12:14,107 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:12:14,392 INFO L129 PetriNetUnfolder]: 700/2281 cut-off events. [2022-07-21 09:12:14,392 INFO L130 PetriNetUnfolder]: For 7414/7907 co-relation queries the response was YES. [2022-07-21 09:12:14,406 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6415 conditions, 2281 events. 700/2281 cut-off events. For 7414/7907 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 18533 event pairs, 111 based on Foata normal form. 131/2311 useless extension candidates. Maximal degree in co-relation 6384. Up to 375 conditions per place. [2022-07-21 09:12:14,417 INFO L132 encePairwiseOnDemand]: 152/160 looper letters, 63 selfloop transitions, 24 changer transitions 0/251 dead transitions. [2022-07-21 09:12:14,417 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 251 transitions, 1465 flow [2022-07-21 09:12:14,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 09:12:14,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-21 09:12:14,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 890 transitions. [2022-07-21 09:12:14,419 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7946428571428571 [2022-07-21 09:12:14,419 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 890 transitions. [2022-07-21 09:12:14,419 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 890 transitions. [2022-07-21 09:12:14,420 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:12:14,420 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 890 transitions. [2022-07-21 09:12:14,422 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 127.14285714285714) internal successors, (890), 7 states have internal predecessors, (890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:12:14,423 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 160.0) internal successors, (1280), 8 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:12:14,424 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 160.0) internal successors, (1280), 8 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:12:14,424 INFO L186 Difference]: Start difference. First operand has 197 places, 234 transitions, 1164 flow. Second operand 7 states and 890 transitions. [2022-07-21 09:12:14,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 251 transitions, 1465 flow [2022-07-21 09:12:14,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 251 transitions, 1419 flow, removed 7 selfloop flow, removed 8 redundant places. [2022-07-21 09:12:14,494 INFO L242 Difference]: Finished difference. Result has 196 places, 234 transitions, 1174 flow [2022-07-21 09:12:14,495 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=1101, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1174, PETRI_PLACES=196, PETRI_TRANSITIONS=234} [2022-07-21 09:12:14,495 INFO L279 CegarLoopForPetriNet]: 144 programPoint places, 52 predicate places. [2022-07-21 09:12:14,495 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 234 transitions, 1174 flow [2022-07-21 09:12:14,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 125.42857142857143) internal successors, (878), 7 states have internal predecessors, (878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:12:14,496 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:12:14,496 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:12:14,516 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-07-21 09:12:14,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:12:14,696 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-21 09:12:14,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:12:14,697 INFO L85 PathProgramCache]: Analyzing trace with hash 1056307517, now seen corresponding path program 3 times [2022-07-21 09:12:14,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:12:14,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769284088] [2022-07-21 09:12:14,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:12:14,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:12:14,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:12:14,799 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:12:14,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:12:14,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769284088] [2022-07-21 09:12:14,801 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769284088] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:12:14,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [13699692] [2022-07-21 09:12:14,803 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-21 09:12:14,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:12:14,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:12:14,805 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) [2022-07-21 09:12:14,806 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-21 09:12:14,895 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-07-21 09:12:14,896 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 09:12:14,897 INFO L263 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-21 09:12:14,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:12:15,027 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:12:15,028 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 09:12:15,194 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:12:15,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [13699692] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-21 09:12:15,195 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-21 09:12:15,195 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10, 9] total 19 [2022-07-21 09:12:15,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632449982] [2022-07-21 09:12:15,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:12:15,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 09:12:15,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:12:15,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 09:12:15,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2022-07-21 09:12:15,197 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 160 [2022-07-21 09:12:15,198 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 234 transitions, 1174 flow. Second operand has 9 states, 9 states have (on average 117.22222222222223) internal successors, (1055), 9 states have internal predecessors, (1055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:12:15,198 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:12:15,198 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 160 [2022-07-21 09:12:15,199 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:12:16,028 INFO L129 PetriNetUnfolder]: 2346/5131 cut-off events. [2022-07-21 09:12:16,029 INFO L130 PetriNetUnfolder]: For 11091/11731 co-relation queries the response was YES. [2022-07-21 09:12:16,061 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15921 conditions, 5131 events. 2346/5131 cut-off events. For 11091/11731 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 41304 event pairs, 374 based on Foata normal form. 140/5098 useless extension candidates. Maximal degree in co-relation 15892. Up to 1116 conditions per place. [2022-07-21 09:12:16,091 INFO L132 encePairwiseOnDemand]: 147/160 looper letters, 109 selfloop transitions, 71 changer transitions 0/300 dead transitions. [2022-07-21 09:12:16,091 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 300 transitions, 1857 flow [2022-07-21 09:12:16,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-21 09:12:16,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-07-21 09:12:16,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1353 transitions. [2022-07-21 09:12:16,095 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.76875 [2022-07-21 09:12:16,095 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1353 transitions. [2022-07-21 09:12:16,095 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1353 transitions. [2022-07-21 09:12:16,096 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:12:16,096 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1353 transitions. [2022-07-21 09:12:16,098 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 123.0) internal successors, (1353), 11 states have internal predecessors, (1353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:12:16,101 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 160.0) internal successors, (1920), 12 states have internal predecessors, (1920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:12:16,101 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 160.0) internal successors, (1920), 12 states have internal predecessors, (1920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:12:16,101 INFO L186 Difference]: Start difference. First operand has 196 places, 234 transitions, 1174 flow. Second operand 11 states and 1353 transitions. [2022-07-21 09:12:16,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 300 transitions, 1857 flow [2022-07-21 09:12:16,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 300 transitions, 1825 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-07-21 09:12:16,146 INFO L242 Difference]: Finished difference. Result has 206 places, 251 transitions, 1556 flow [2022-07-21 09:12:16,147 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=1147, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1556, PETRI_PLACES=206, PETRI_TRANSITIONS=251} [2022-07-21 09:12:16,147 INFO L279 CegarLoopForPetriNet]: 144 programPoint places, 62 predicate places. [2022-07-21 09:12:16,147 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 251 transitions, 1556 flow [2022-07-21 09:12:16,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 117.22222222222223) internal successors, (1055), 9 states have internal predecessors, (1055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:12:16,148 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:12:16,148 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:12:16,176 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-21 09:12:16,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:12:16,369 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-21 09:12:16,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:12:16,369 INFO L85 PathProgramCache]: Analyzing trace with hash -924588239, now seen corresponding path program 4 times [2022-07-21 09:12:16,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:12:16,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831994018] [2022-07-21 09:12:16,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:12:16,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:12:16,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:12:16,458 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:12:16,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:12:16,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831994018] [2022-07-21 09:12:16,459 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831994018] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:12:16,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1511758934] [2022-07-21 09:12:16,460 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-21 09:12:16,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:12:16,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:12:16,461 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) [2022-07-21 09:12:16,488 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-21 09:12:16,567 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-21 09:12:16,567 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 09:12:16,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-21 09:12:16,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:12:16,668 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:12:16,668 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 09:12:16,824 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:12:16,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1511758934] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-21 09:12:16,824 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-21 09:12:16,824 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10, 9] total 18 [2022-07-21 09:12:16,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507383969] [2022-07-21 09:12:16,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:12:16,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 09:12:16,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:12:16,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 09:12:16,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2022-07-21 09:12:16,828 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 160 [2022-07-21 09:12:16,829 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 251 transitions, 1556 flow. Second operand has 9 states, 9 states have (on average 117.22222222222223) internal successors, (1055), 9 states have internal predecessors, (1055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:12:16,829 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:12:16,829 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 160 [2022-07-21 09:12:16,829 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:12:17,598 INFO L129 PetriNetUnfolder]: 2460/5508 cut-off events. [2022-07-21 09:12:17,598 INFO L130 PetriNetUnfolder]: For 18237/19039 co-relation queries the response was YES. [2022-07-21 09:12:17,640 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18981 conditions, 5508 events. 2460/5508 cut-off events. For 18237/19039 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 45070 event pairs, 429 based on Foata normal form. 95/5428 useless extension candidates. Maximal degree in co-relation 18947. Up to 1210 conditions per place. [2022-07-21 09:12:17,673 INFO L132 encePairwiseOnDemand]: 148/160 looper letters, 105 selfloop transitions, 109 changer transitions 0/334 dead transitions. [2022-07-21 09:12:17,674 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 334 transitions, 2651 flow [2022-07-21 09:12:17,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-21 09:12:17,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-07-21 09:12:17,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1335 transitions. [2022-07-21 09:12:17,679 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7585227272727273 [2022-07-21 09:12:17,679 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1335 transitions. [2022-07-21 09:12:17,680 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1335 transitions. [2022-07-21 09:12:17,681 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:12:17,681 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1335 transitions. [2022-07-21 09:12:17,684 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 121.36363636363636) internal successors, (1335), 11 states have internal predecessors, (1335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:12:17,686 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 160.0) internal successors, (1920), 12 states have internal predecessors, (1920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:12:17,698 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 160.0) internal successors, (1920), 12 states have internal predecessors, (1920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:12:17,698 INFO L186 Difference]: Start difference. First operand has 206 places, 251 transitions, 1556 flow. Second operand 11 states and 1335 transitions. [2022-07-21 09:12:17,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 334 transitions, 2651 flow [2022-07-21 09:12:17,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 334 transitions, 2579 flow, removed 7 selfloop flow, removed 6 redundant places. [2022-07-21 09:12:17,907 INFO L242 Difference]: Finished difference. Result has 216 places, 291 transitions, 2389 flow [2022-07-21 09:12:17,908 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=1508, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2389, PETRI_PLACES=216, PETRI_TRANSITIONS=291} [2022-07-21 09:12:17,909 INFO L279 CegarLoopForPetriNet]: 144 programPoint places, 72 predicate places. [2022-07-21 09:12:17,910 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 291 transitions, 2389 flow [2022-07-21 09:12:17,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 117.22222222222223) internal successors, (1055), 9 states have internal predecessors, (1055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:12:17,911 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:12:17,911 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:12:17,937 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-21 09:12:18,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-07-21 09:12:18,137 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-21 09:12:18,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:12:18,138 INFO L85 PathProgramCache]: Analyzing trace with hash -297785203, now seen corresponding path program 5 times [2022-07-21 09:12:18,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:12:18,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528661239] [2022-07-21 09:12:18,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:12:18,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:12:18,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:12:18,222 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-21 09:12:18,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:12:18,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528661239] [2022-07-21 09:12:18,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528661239] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:12:18,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [228302536] [2022-07-21 09:12:18,223 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-07-21 09:12:18,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:12:18,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:12:18,236 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) [2022-07-21 09:12:18,238 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-21 09:12:18,313 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-21 09:12:18,313 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 09:12:18,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-21 09:12:18,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:12:18,401 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-21 09:12:18,401 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 09:12:18,460 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-21 09:12:18,461 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [228302536] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 09:12:18,461 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 09:12:18,461 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 7] total 16 [2022-07-21 09:12:18,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627561179] [2022-07-21 09:12:18,463 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 09:12:18,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-21 09:12:18,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:12:18,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-21 09:12:18,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2022-07-21 09:12:18,465 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 160 [2022-07-21 09:12:18,466 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 291 transitions, 2389 flow. Second operand has 16 states, 16 states have (on average 113.8125) internal successors, (1821), 16 states have internal predecessors, (1821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:12:18,466 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:12:18,467 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 160 [2022-07-21 09:12:18,467 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:12:20,894 INFO L129 PetriNetUnfolder]: 5606/11533 cut-off events. [2022-07-21 09:12:20,895 INFO L130 PetriNetUnfolder]: For 63186/63421 co-relation queries the response was YES. [2022-07-21 09:12:21,029 INFO L84 FinitePrefix]: Finished finitePrefix Result has 44215 conditions, 11533 events. 5606/11533 cut-off events. For 63186/63421 co-relation queries the response was YES. Maximal size of possible extension queue 483. Compared 100245 event pairs, 737 based on Foata normal form. 45/11389 useless extension candidates. Maximal degree in co-relation 44175. Up to 1176 conditions per place. [2022-07-21 09:12:21,076 INFO L132 encePairwiseOnDemand]: 143/160 looper letters, 233 selfloop transitions, 235 changer transitions 0/567 dead transitions. [2022-07-21 09:12:21,076 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 567 transitions, 5333 flow [2022-07-21 09:12:21,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-21 09:12:21,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-07-21 09:12:21,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2907 transitions. [2022-07-21 09:12:21,079 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.75703125 [2022-07-21 09:12:21,079 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2907 transitions. [2022-07-21 09:12:21,079 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2907 transitions. [2022-07-21 09:12:21,080 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:12:21,080 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2907 transitions. [2022-07-21 09:12:21,083 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 121.125) internal successors, (2907), 24 states have internal predecessors, (2907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:12:21,086 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 160.0) internal successors, (4000), 25 states have internal predecessors, (4000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:12:21,086 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 160.0) internal successors, (4000), 25 states have internal predecessors, (4000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:12:21,087 INFO L186 Difference]: Start difference. First operand has 216 places, 291 transitions, 2389 flow. Second operand 24 states and 2907 transitions. [2022-07-21 09:12:21,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 567 transitions, 5333 flow [2022-07-21 09:12:21,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 567 transitions, 5278 flow, removed 24 selfloop flow, removed 4 redundant places. [2022-07-21 09:12:21,362 INFO L242 Difference]: Finished difference. Result has 247 places, 412 transitions, 4314 flow [2022-07-21 09:12:21,362 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=2368, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=4314, PETRI_PLACES=247, PETRI_TRANSITIONS=412} [2022-07-21 09:12:21,362 INFO L279 CegarLoopForPetriNet]: 144 programPoint places, 103 predicate places. [2022-07-21 09:12:21,363 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 412 transitions, 4314 flow [2022-07-21 09:12:21,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 113.8125) internal successors, (1821), 16 states have internal predecessors, (1821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:12:21,363 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:12:21,363 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:12:21,382 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-07-21 09:12:21,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:12:21,579 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-21 09:12:21,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:12:21,580 INFO L85 PathProgramCache]: Analyzing trace with hash -1659950369, now seen corresponding path program 6 times [2022-07-21 09:12:21,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:12:21,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594664524] [2022-07-21 09:12:21,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:12:21,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:12:21,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:12:21,663 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-21 09:12:21,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:12:21,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594664524] [2022-07-21 09:12:21,664 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594664524] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:12:21,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1007017848] [2022-07-21 09:12:21,664 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-07-21 09:12:21,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:12:21,664 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:12:21,680 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) [2022-07-21 09:12:21,681 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-21 09:12:21,757 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-07-21 09:12:21,757 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 09:12:21,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-21 09:12:21,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:12:21,886 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-21 09:12:21,887 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 09:12:22,053 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-21 09:12:22,053 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1007017848] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-21 09:12:22,053 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-21 09:12:22,053 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10, 9] total 20 [2022-07-21 09:12:22,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590292564] [2022-07-21 09:12:22,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:12:22,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 09:12:22,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:12:22,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 09:12:22,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2022-07-21 09:12:22,055 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 160 [2022-07-21 09:12:22,056 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 412 transitions, 4314 flow. Second operand has 9 states, 9 states have (on average 117.22222222222223) internal successors, (1055), 9 states have internal predecessors, (1055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:12:22,056 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:12:22,056 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 160 [2022-07-21 09:12:22,056 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:12:23,216 INFO L129 PetriNetUnfolder]: 3122/6889 cut-off events. [2022-07-21 09:12:23,217 INFO L130 PetriNetUnfolder]: For 45425/46015 co-relation queries the response was YES. [2022-07-21 09:12:23,260 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28819 conditions, 6889 events. 3122/6889 cut-off events. For 45425/46015 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 58963 event pairs, 367 based on Foata normal form. 72/6758 useless extension candidates. Maximal degree in co-relation 28767. Up to 1942 conditions per place. [2022-07-21 09:12:23,293 INFO L132 encePairwiseOnDemand]: 148/160 looper letters, 124 selfloop transitions, 151 changer transitions 0/441 dead transitions. [2022-07-21 09:12:23,293 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 441 transitions, 5031 flow [2022-07-21 09:12:23,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 09:12:23,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-21 09:12:23,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1220 transitions. [2022-07-21 09:12:23,295 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7625 [2022-07-21 09:12:23,295 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1220 transitions. [2022-07-21 09:12:23,296 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1220 transitions. [2022-07-21 09:12:23,296 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:12:23,296 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1220 transitions. [2022-07-21 09:12:23,297 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 122.0) internal successors, (1220), 10 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:12:23,299 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 160.0) internal successors, (1760), 11 states have internal predecessors, (1760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:12:23,299 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 160.0) internal successors, (1760), 11 states have internal predecessors, (1760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:12:23,299 INFO L186 Difference]: Start difference. First operand has 247 places, 412 transitions, 4314 flow. Second operand 10 states and 1220 transitions. [2022-07-21 09:12:23,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 441 transitions, 5031 flow [2022-07-21 09:12:23,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 441 transitions, 4896 flow, removed 42 selfloop flow, removed 6 redundant places. [2022-07-21 09:12:23,503 INFO L242 Difference]: Finished difference. Result has 253 places, 415 transitions, 4752 flow [2022-07-21 09:12:23,503 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=4191, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=412, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=148, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4752, PETRI_PLACES=253, PETRI_TRANSITIONS=415} [2022-07-21 09:12:23,504 INFO L279 CegarLoopForPetriNet]: 144 programPoint places, 109 predicate places. [2022-07-21 09:12:23,504 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 415 transitions, 4752 flow [2022-07-21 09:12:23,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 117.22222222222223) internal successors, (1055), 9 states have internal predecessors, (1055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:12:23,504 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:12:23,504 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:12:23,521 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-21 09:12:23,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:12:23,720 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-21 09:12:23,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:12:23,720 INFO L85 PathProgramCache]: Analyzing trace with hash 1385441389, now seen corresponding path program 1 times [2022-07-21 09:12:23,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:12:23,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109198513] [2022-07-21 09:12:23,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:12:23,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:12:23,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:12:25,234 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:12:25,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:12:25,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109198513] [2022-07-21 09:12:25,234 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109198513] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:12:25,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [53044093] [2022-07-21 09:12:25,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:12:25,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:12:25,234 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:12:25,243 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) [2022-07-21 09:12:25,244 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-21 09:12:25,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:12:25,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 47 conjunts are in the unsatisfiable core [2022-07-21 09:12:25,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:12:26,397 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-21 09:12:26,397 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 17 treesize of output 17 [2022-07-21 09:12:26,686 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:12:26,687 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 09:12:27,281 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-21 09:12:27,282 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 28 treesize of output 29 [2022-07-21 09:12:30,725 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:12:30,725 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [53044093] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 09:12:30,725 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 09:12:30,725 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 28, 23] total 75 [2022-07-21 09:12:30,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450439679] [2022-07-21 09:12:30,725 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 09:12:30,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2022-07-21 09:12:30,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:12:30,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2022-07-21 09:12:30,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=842, Invalid=4708, Unknown=0, NotChecked=0, Total=5550 [2022-07-21 09:12:30,729 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 160 [2022-07-21 09:12:30,731 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 415 transitions, 4752 flow. Second operand has 75 states, 75 states have (on average 55.973333333333336) internal successors, (4198), 75 states have internal predecessors, (4198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:12:30,731 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:12:30,731 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 160 [2022-07-21 09:12:30,731 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:12:54,707 INFO L129 PetriNetUnfolder]: 61400/98096 cut-off events. [2022-07-21 09:12:54,708 INFO L130 PetriNetUnfolder]: For 626924/626924 co-relation queries the response was YES. [2022-07-21 09:12:55,838 INFO L84 FinitePrefix]: Finished finitePrefix Result has 389660 conditions, 98096 events. 61400/98096 cut-off events. For 626924/626924 co-relation queries the response was YES. Maximal size of possible extension queue 4238. Compared 897971 event pairs, 8101 based on Foata normal form. 2/97905 useless extension candidates. Maximal degree in co-relation 389606. Up to 33929 conditions per place. [2022-07-21 09:12:56,370 INFO L132 encePairwiseOnDemand]: 119/160 looper letters, 2138 selfloop transitions, 786 changer transitions 15/2985 dead transitions. [2022-07-21 09:12:56,370 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 2985 transitions, 40606 flow [2022-07-21 09:12:56,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2022-07-21 09:12:56,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2022-07-21 09:12:56,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 6365 transitions. [2022-07-21 09:12:56,379 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.40183080808080807 [2022-07-21 09:12:56,379 INFO L72 ComplementDD]: Start complementDD. Operand 99 states and 6365 transitions. [2022-07-21 09:12:56,379 INFO L73 IsDeterministic]: Start isDeterministic. Operand 99 states and 6365 transitions. [2022-07-21 09:12:56,381 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:12:56,381 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 99 states and 6365 transitions. [2022-07-21 09:12:56,390 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 100 states, 99 states have (on average 64.29292929292929) internal successors, (6365), 99 states have internal predecessors, (6365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:12:56,403 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 100 states, 100 states have (on average 160.0) internal successors, (16000), 100 states have internal predecessors, (16000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:12:56,405 INFO L81 ComplementDD]: Finished complementDD. Result has 100 states, 100 states have (on average 160.0) internal successors, (16000), 100 states have internal predecessors, (16000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:12:56,405 INFO L186 Difference]: Start difference. First operand has 253 places, 415 transitions, 4752 flow. Second operand 99 states and 6365 transitions. [2022-07-21 09:12:56,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 2985 transitions, 40606 flow [2022-07-21 09:13:11,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 2985 transitions, 39797 flow, removed 89 selfloop flow, removed 7 redundant places. [2022-07-21 09:13:11,859 INFO L242 Difference]: Finished difference. Result has 386 places, 1237 transitions, 18944 flow [2022-07-21 09:13:11,860 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=4625, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=415, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=99, PETRI_FLOW=18944, PETRI_PLACES=386, PETRI_TRANSITIONS=1237} [2022-07-21 09:13:11,860 INFO L279 CegarLoopForPetriNet]: 144 programPoint places, 242 predicate places. [2022-07-21 09:13:11,860 INFO L495 AbstractCegarLoop]: Abstraction has has 386 places, 1237 transitions, 18944 flow [2022-07-21 09:13:11,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 75 states have (on average 55.973333333333336) internal successors, (4198), 75 states have internal predecessors, (4198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:13:11,862 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:13:11,862 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:13:11,882 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-21 09:13:12,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-07-21 09:13:12,082 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-21 09:13:12,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:13:12,083 INFO L85 PathProgramCache]: Analyzing trace with hash -1574482253, now seen corresponding path program 1 times [2022-07-21 09:13:12,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:13:12,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544933338] [2022-07-21 09:13:12,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:13:12,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:13:12,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:13:12,909 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:13:12,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:13:12,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544933338] [2022-07-21 09:13:12,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544933338] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:13:12,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1735758369] [2022-07-21 09:13:12,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:13:12,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:13:12,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:13:12,911 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:13:12,930 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-21 09:13:13,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:13:13,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 56 conjunts are in the unsatisfiable core [2022-07-21 09:13:13,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:13:13,113 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-21 09:13:13,340 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-21 09:13:13,340 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 [2022-07-21 09:13:13,513 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-21 09:13:13,848 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-21 09:13:13,960 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-21 09:13:14,101 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 21 treesize of output 21 [2022-07-21 09:13:14,133 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 22 treesize of output 10 [2022-07-21 09:13:14,283 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:13:14,284 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 09:13:14,436 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_364 (Array Int Int))) (= (mod (+ c_~sum3~0 c_~sum2~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_364) c_~A~0.base) c_~A~0.offset)) 4294967296) (mod c_~sum1~0 4294967296))) is different from false [2022-07-21 09:13:14,460 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_364 (Array Int Int))) (= (mod (+ c_~sum1~0 |c_thread1Thread1of1ForFork0_#t~mem2|) 4294967296) (mod (+ c_~sum3~0 c_~sum2~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_364) c_~A~0.base) c_~A~0.offset)) 4294967296))) is different from false [2022-07-21 09:13:14,465 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_364 (Array Int Int))) (= (mod (+ c_~sum1~0 (select (select |c_#memory_int| c_~A~0.base) (+ c_~A~0.offset (* c_thread1Thread1of1ForFork0_~i~0 4)))) 4294967296) (mod (+ c_~sum3~0 c_~sum2~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_364) c_~A~0.base) c_~A~0.offset)) 4294967296))) is different from false [2022-07-21 09:13:14,475 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_364 (Array Int Int)) (v_ArrVal_363 (Array Int Int))) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_363))) (= (mod (+ c_~sum1~0 (select (select .cse0 c_~A~0.base) (+ c_~A~0.offset (* c_thread1Thread1of1ForFork0_~i~0 4)))) 4294967296) (mod (+ (select (select (store .cse0 |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_364) c_~A~0.base) c_~A~0.offset) c_~sum3~0 c_~sum2~0) 4294967296)))) is different from false [2022-07-21 09:13:14,492 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_364 (Array Int Int)) (v_ArrVal_363 (Array Int Int))) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_363))) (= (mod (+ c_~sum1~0 (select (select .cse0 c_~A~0.base) c_~A~0.offset)) 4294967296) (mod (+ (select (select (store .cse0 |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_364) c_~A~0.base) c_~A~0.offset) c_~sum3~0 c_~sum2~0) 4294967296)))) is different from false [2022-07-21 09:13:14,501 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_362 (Array Int Int)) (v_ArrVal_364 (Array Int Int)) (v_ArrVal_363 (Array Int Int))) (let ((.cse0 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_362) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_363))) (= (mod (+ c_~sum3~0 c_~sum2~0 (select (select (store .cse0 |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_364) c_~A~0.base) c_~A~0.offset)) 4294967296) (mod (+ c_~sum1~0 (select (select .cse0 c_~A~0.base) c_~A~0.offset)) 4294967296)))) is different from false [2022-07-21 09:13:14,534 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_362 (Array Int Int)) (v_ArrVal_364 (Array Int Int)) (v_ArrVal_363 (Array Int Int))) (let ((.cse0 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_362) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_363))) (= (mod (+ c_~sum3~0 c_~sum2~0 (select (select (store .cse0 |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_364) |c_ULTIMATE.start_main_#t~ret9#1.base|) |c_ULTIMATE.start_main_#t~ret9#1.offset|)) 4294967296) (mod (+ c_~sum1~0 (select (select .cse0 |c_ULTIMATE.start_main_#t~ret9#1.base|) |c_ULTIMATE.start_main_#t~ret9#1.offset|)) 4294967296)))) is different from false [2022-07-21 09:13:14,543 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_362 (Array Int Int)) (v_ArrVal_364 (Array Int Int)) (v_ArrVal_363 (Array Int Int))) (let ((.cse0 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_362) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_363))) (= (mod (+ c_~sum1~0 (select (select .cse0 |c_ULTIMATE.start_create_fresh_uint_array_#res#1.base|) |c_ULTIMATE.start_create_fresh_uint_array_#res#1.offset|)) 4294967296) (mod (+ c_~sum3~0 c_~sum2~0 (select (select (store .cse0 |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_364) |c_ULTIMATE.start_create_fresh_uint_array_#res#1.base|) |c_ULTIMATE.start_create_fresh_uint_array_#res#1.offset|)) 4294967296)))) is different from false [2022-07-21 09:13:14,549 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_362 (Array Int Int)) (v_ArrVal_364 (Array Int Int)) (v_ArrVal_363 (Array Int Int))) (let ((.cse0 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_362) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_363))) (= (mod (+ c_~sum3~0 (select (select (store .cse0 |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_364) |c_ULTIMATE.start_create_fresh_uint_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_uint_array_~arr~0#1.offset|) c_~sum2~0) 4294967296) (mod (+ c_~sum1~0 (select (select .cse0 |c_ULTIMATE.start_create_fresh_uint_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_uint_array_~arr~0#1.offset|)) 4294967296)))) is different from false [2022-07-21 09:13:14,573 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-21 09:13:14,574 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 48 [2022-07-21 09:13:14,578 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 846 treesize of output 798 [2022-07-21 09:13:14,583 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 798 treesize of output 766 [2022-07-21 09:13:14,588 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 766 treesize of output 718 [2022-07-21 09:13:14,594 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 718 treesize of output 694