./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/parallel-ticket-5.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ff03de63 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/parallel-ticket-5.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 084d7ddce3c53222c6533ccae99969e854061e3b422eaf94457157515e3bd009 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 15:19:06,440 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 15:19:06,442 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 15:19:06,487 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 15:19:06,489 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 15:19:06,491 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 15:19:06,493 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 15:19:06,495 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 15:19:06,496 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 15:19:06,499 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 15:19:06,499 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 15:19:06,500 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 15:19:06,501 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 15:19:06,502 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 15:19:06,503 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 15:19:06,504 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 15:19:06,505 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 15:19:06,506 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 15:19:06,508 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 15:19:06,510 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 15:19:06,512 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 15:19:06,513 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 15:19:06,514 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 15:19:06,515 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 15:19:06,519 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 15:19:06,521 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 15:19:06,521 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 15:19:06,522 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 15:19:06,523 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 15:19:06,523 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 15:19:06,523 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 15:19:06,524 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 15:19:06,525 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 15:19:06,526 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 15:19:06,526 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 15:19:06,527 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 15:19:06,527 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 15:19:06,528 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 15:19:06,528 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 15:19:06,528 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 15:19:06,529 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 15:19:06,530 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-21 15:19:06,551 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 15:19:06,552 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 15:19:06,552 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 15:19:06,552 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 15:19:06,553 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 15:19:06,553 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 15:19:06,553 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 15:19:06,553 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 15:19:06,553 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 15:19:06,554 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 15:19:06,554 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-21 15:19:06,554 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 15:19:06,554 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-21 15:19:06,554 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 15:19:06,554 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 15:19:06,554 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 15:19:06,555 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 15:19:06,555 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-21 15:19:06,555 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 15:19:06,555 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 15:19:06,555 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 15:19:06,555 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 15:19:06,556 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 15:19:06,556 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 15:19:06,556 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 15:19:06,556 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 15:19:06,556 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 15:19:06,556 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 15:19:06,556 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 15:19:06,557 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 15:19:06,557 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-21 15:19:06,557 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-21 15:19:06,557 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 15:19:06,557 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 15:19:06,557 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 084d7ddce3c53222c6533ccae99969e854061e3b422eaf94457157515e3bd009 [2021-12-21 15:19:06,741 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 15:19:06,767 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 15:19:06,769 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 15:19:06,770 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 15:19:06,770 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 15:19:06,771 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel-ticket-5.wvr.c [2021-12-21 15:19:06,819 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4e4516ed8/56f5f6bfd47d49f1b7fe751ed803cdee/FLAG82a8f3b13 [2021-12-21 15:19:07,206 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 15:19:07,207 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-ticket-5.wvr.c [2021-12-21 15:19:07,215 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4e4516ed8/56f5f6bfd47d49f1b7fe751ed803cdee/FLAG82a8f3b13 [2021-12-21 15:19:07,229 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4e4516ed8/56f5f6bfd47d49f1b7fe751ed803cdee [2021-12-21 15:19:07,231 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 15:19:07,233 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 15:19:07,235 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 15:19:07,235 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 15:19:07,238 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 15:19:07,238 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 03:19:07" (1/1) ... [2021-12-21 15:19:07,239 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e4ce936 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:19:07, skipping insertion in model container [2021-12-21 15:19:07,239 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 03:19:07" (1/1) ... [2021-12-21 15:19:07,243 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 15:19:07,263 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 15:19:07,446 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/parallel-ticket-5.wvr.c[3963,3976] [2021-12-21 15:19:07,451 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 15:19:07,457 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 15:19:07,489 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/parallel-ticket-5.wvr.c[3963,3976] [2021-12-21 15:19:07,494 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 15:19:07,505 INFO L208 MainTranslator]: Completed translation [2021-12-21 15:19:07,506 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:19:07 WrapperNode [2021-12-21 15:19:07,506 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 15:19:07,507 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 15:19:07,507 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 15:19:07,507 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 15:19:07,513 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:19:07" (1/1) ... [2021-12-21 15:19:07,528 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:19:07" (1/1) ... [2021-12-21 15:19:07,551 INFO L137 Inliner]: procedures = 24, calls = 85, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 238 [2021-12-21 15:19:07,551 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 15:19:07,552 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 15:19:07,552 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 15:19:07,552 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 15:19:07,557 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:19:07" (1/1) ... [2021-12-21 15:19:07,557 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:19:07" (1/1) ... [2021-12-21 15:19:07,559 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:19:07" (1/1) ... [2021-12-21 15:19:07,559 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:19:07" (1/1) ... [2021-12-21 15:19:07,563 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:19:07" (1/1) ... [2021-12-21 15:19:07,564 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:19:07" (1/1) ... [2021-12-21 15:19:07,565 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:19:07" (1/1) ... [2021-12-21 15:19:07,567 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 15:19:07,567 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 15:19:07,567 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 15:19:07,568 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 15:19:07,568 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:19:07" (1/1) ... [2021-12-21 15:19:07,579 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 15:19:07,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:19:07,608 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) [2021-12-21 15:19:07,620 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 [2021-12-21 15:19:07,642 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 15:19:07,643 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-12-21 15:19:07,643 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-12-21 15:19:07,643 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-12-21 15:19:07,643 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-12-21 15:19:07,643 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-12-21 15:19:07,643 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-12-21 15:19:07,643 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-12-21 15:19:07,644 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-12-21 15:19:07,644 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 15:19:07,644 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2021-12-21 15:19:07,644 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2021-12-21 15:19:07,644 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-21 15:19:07,644 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-21 15:19:07,645 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-12-21 15:19:07,645 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-12-21 15:19:07,645 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 15:19:07,645 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 15:19:07,645 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-21 15:19:07,646 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-21 15:19:07,647 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-12-21 15:19:07,751 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 15:19:07,752 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 15:19:08,040 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 15:19:08,097 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 15:19:08,097 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-21 15:19:08,099 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 03:19:08 BoogieIcfgContainer [2021-12-21 15:19:08,099 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 15:19:08,100 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 15:19:08,100 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 15:19:08,103 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 15:19:08,104 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 03:19:07" (1/3) ... [2021-12-21 15:19:08,104 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11cd2dca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 03:19:08, skipping insertion in model container [2021-12-21 15:19:08,104 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:19:07" (2/3) ... [2021-12-21 15:19:08,104 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11cd2dca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 03:19:08, skipping insertion in model container [2021-12-21 15:19:08,105 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 03:19:08" (3/3) ... [2021-12-21 15:19:08,105 INFO L111 eAbstractionObserver]: Analyzing ICFG parallel-ticket-5.wvr.c [2021-12-21 15:19:08,108 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-12-21 15:19:08,109 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 15:19:08,109 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-21 15:19:08,109 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-12-21 15:19:08,150 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:19:08,150 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:19:08,150 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:19:08,151 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:19:08,151 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:19:08,151 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:19:08,151 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:19:08,152 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:19:08,152 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:19:08,152 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:19:08,152 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:19:08,152 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:19:08,152 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:19:08,153 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:19:08,153 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:19:08,153 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:19:08,153 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:19:08,153 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:19:08,154 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:19:08,154 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:19:08,154 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:19:08,154 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:19:08,154 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:19:08,155 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:19:08,155 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork4_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:19:08,157 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork4_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:19:08,157 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork4_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:19:08,158 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork4_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:19:08,158 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork4_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:19:08,158 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork4_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:19:08,158 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork4_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:19:08,159 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork4_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:19:08,159 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork4_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:19:08,159 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork4_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:19:08,159 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork4_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:19:08,159 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork4_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:19:08,160 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:19:08,160 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:19:08,160 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:19:08,160 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:19:08,161 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:19:08,161 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:19:08,164 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#t~post8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:19:08,164 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#t~post8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:19:08,164 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:19:08,165 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:19:08,165 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:19:08,165 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:19:08,165 WARN L322 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork3_#t~post9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:19:08,165 WARN L322 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork3_#t~post9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:19:08,166 WARN L322 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork3_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:19:08,166 WARN L322 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork3_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:19:08,166 WARN L322 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork3_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:19:08,166 WARN L322 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork3_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:19:08,166 WARN L322 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork3_#t~post10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:19:08,168 WARN L322 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork3_#t~post10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:19:08,168 WARN L322 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork3_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:19:08,168 WARN L322 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork3_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:19:08,168 WARN L322 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork3_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:19:08,168 WARN L322 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork3_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:19:08,170 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:19:08,171 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:19:08,171 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:19:08,171 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:19:08,171 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:19:08,171 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:19:08,172 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:19:08,172 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#t~post8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:19:08,172 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:19:08,173 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:19:08,173 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:19:08,173 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:19:08,173 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:19:08,174 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:19:08,174 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:19:08,175 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:19:08,176 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:19:08,176 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:19:08,176 WARN L322 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork3_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:19:08,177 WARN L322 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork3_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:19:08,177 WARN L322 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork3_#t~post9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:19:08,177 WARN L322 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork3_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:19:08,178 WARN L322 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork3_#t~post10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:19:08,178 WARN L322 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork3_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:19:08,179 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork4_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:19:08,179 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork4_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:19:08,179 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork4_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:19:08,179 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork4_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:19:08,179 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork4_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:19:08,180 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork4_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:19:08,184 INFO L148 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2021-12-21 15:19:08,221 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 15:19:08,228 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-21 15:19:08,228 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-12-21 15:19:08,242 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 179 places, 165 transitions, 370 flow [2021-12-21 15:19:08,294 INFO L129 PetriNetUnfolder]: 2/160 cut-off events. [2021-12-21 15:19:08,294 INFO L130 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2021-12-21 15:19:08,297 INFO L84 FinitePrefix]: Finished finitePrefix Result has 181 conditions, 160 events. 2/160 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 66 event pairs, 0 based on Foata normal form. 0/157 useless extension candidates. Maximal degree in co-relation 120. Up to 2 conditions per place. [2021-12-21 15:19:08,297 INFO L82 GeneralOperation]: Start removeDead. Operand has 179 places, 165 transitions, 370 flow [2021-12-21 15:19:08,313 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 159 places, 145 transitions, 320 flow [2021-12-21 15:19:08,344 INFO L129 PetriNetUnfolder]: 2/144 cut-off events. [2021-12-21 15:19:08,344 INFO L130 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2021-12-21 15:19:08,344 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:19:08,345 INFO L254 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:19:08,345 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2021-12-21 15:19:08,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:19:08,348 INFO L85 PathProgramCache]: Analyzing trace with hash -1882316905, now seen corresponding path program 1 times [2021-12-21 15:19:08,356 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:19:08,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678237598] [2021-12-21 15:19:08,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:19:08,357 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:19:08,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:19:09,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 15:19:09,176 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:19:09,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678237598] [2021-12-21 15:19:09,177 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678237598] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:19:09,177 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:19:09,177 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-21 15:19:09,178 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252052952] [2021-12-21 15:19:09,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:19:09,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-21 15:19:09,184 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:19:09,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-21 15:19:09,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-12-21 15:19:09,203 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 165 [2021-12-21 15:19:09,206 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 145 transitions, 320 flow. Second operand has 12 states, 12 states have (on average 115.08333333333333) internal successors, (1381), 12 states have internal predecessors, (1381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:19:09,207 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 15:19:09,207 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 165 [2021-12-21 15:19:09,208 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 15:19:13,934 INFO L129 PetriNetUnfolder]: 28398/43787 cut-off events. [2021-12-21 15:19:13,934 INFO L130 PetriNetUnfolder]: For 7195/7249 co-relation queries the response was YES. [2021-12-21 15:19:14,105 INFO L84 FinitePrefix]: Finished finitePrefix Result has 86820 conditions, 43787 events. 28398/43787 cut-off events. For 7195/7249 co-relation queries the response was YES. Maximal size of possible extension queue 1725. Compared 330731 event pairs, 16376 based on Foata normal form. 4/42714 useless extension candidates. Maximal degree in co-relation 68872. Up to 12802 conditions per place. [2021-12-21 15:19:14,261 INFO L132 encePairwiseOnDemand]: 141/165 looper letters, 122 selfloop transitions, 27 changer transitions 26/267 dead transitions. [2021-12-21 15:19:14,261 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 267 transitions, 1004 flow [2021-12-21 15:19:14,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-21 15:19:14,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-12-21 15:19:14,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1957 transitions. [2021-12-21 15:19:14,278 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7412878787878788 [2021-12-21 15:19:14,278 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1957 transitions. [2021-12-21 15:19:14,279 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1957 transitions. [2021-12-21 15:19:14,281 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 15:19:14,283 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1957 transitions. [2021-12-21 15:19:14,288 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 122.3125) internal successors, (1957), 16 states have internal predecessors, (1957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:19:14,296 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 165.0) internal successors, (2805), 17 states have internal predecessors, (2805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:19:14,298 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 165.0) internal successors, (2805), 17 states have internal predecessors, (2805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:19:14,299 INFO L186 Difference]: Start difference. First operand has 159 places, 145 transitions, 320 flow. Second operand 16 states and 1957 transitions. [2021-12-21 15:19:14,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 267 transitions, 1004 flow [2021-12-21 15:19:14,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 267 transitions, 924 flow, removed 0 selfloop flow, removed 10 redundant places. [2021-12-21 15:19:14,424 INFO L242 Difference]: Finished difference. Result has 174 places, 162 transitions, 479 flow [2021-12-21 15:19:14,426 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=296, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=479, PETRI_PLACES=174, PETRI_TRANSITIONS=162} [2021-12-21 15:19:14,428 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 15 predicate places. [2021-12-21 15:19:14,428 INFO L470 AbstractCegarLoop]: Abstraction has has 174 places, 162 transitions, 479 flow [2021-12-21 15:19:14,429 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 115.08333333333333) internal successors, (1381), 12 states have internal predecessors, (1381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:19:14,429 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:19:14,430 INFO L254 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:19:14,430 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-21 15:19:14,430 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2021-12-21 15:19:14,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:19:14,431 INFO L85 PathProgramCache]: Analyzing trace with hash 1644980583, now seen corresponding path program 2 times [2021-12-21 15:19:14,431 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:19:14,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878475022] [2021-12-21 15:19:14,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:19:14,432 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:19:14,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:19:14,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 15:19:14,719 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:19:14,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878475022] [2021-12-21 15:19:14,719 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878475022] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:19:14,719 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:19:14,719 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-21 15:19:14,720 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304469646] [2021-12-21 15:19:14,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:19:14,721 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-21 15:19:14,721 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:19:14,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-21 15:19:14,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-12-21 15:19:14,724 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 165 [2021-12-21 15:19:14,726 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 162 transitions, 479 flow. Second operand has 12 states, 12 states have (on average 115.08333333333333) internal successors, (1381), 12 states have internal predecessors, (1381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:19:14,726 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 15:19:14,726 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 165 [2021-12-21 15:19:14,726 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 15:19:18,939 INFO L129 PetriNetUnfolder]: 25385/42661 cut-off events. [2021-12-21 15:19:18,939 INFO L130 PetriNetUnfolder]: For 34339/34339 co-relation queries the response was YES. [2021-12-21 15:19:19,139 INFO L84 FinitePrefix]: Finished finitePrefix Result has 108685 conditions, 42661 events. 25385/42661 cut-off events. For 34339/34339 co-relation queries the response was YES. Maximal size of possible extension queue 1845. Compared 370827 event pairs, 6884 based on Foata normal form. 1/42097 useless extension candidates. Maximal degree in co-relation 108666. Up to 22556 conditions per place. [2021-12-21 15:19:19,254 INFO L132 encePairwiseOnDemand]: 146/165 looper letters, 82 selfloop transitions, 29 changer transitions 47/250 dead transitions. [2021-12-21 15:19:19,254 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 250 transitions, 1152 flow [2021-12-21 15:19:19,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-21 15:19:19,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-12-21 15:19:19,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1472 transitions. [2021-12-21 15:19:19,258 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7434343434343434 [2021-12-21 15:19:19,258 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1472 transitions. [2021-12-21 15:19:19,258 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1472 transitions. [2021-12-21 15:19:19,258 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 15:19:19,259 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1472 transitions. [2021-12-21 15:19:19,261 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 122.66666666666667) internal successors, (1472), 12 states have internal predecessors, (1472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:19:19,264 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 165.0) internal successors, (2145), 13 states have internal predecessors, (2145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:19:19,266 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 165.0) internal successors, (2145), 13 states have internal predecessors, (2145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:19:19,266 INFO L186 Difference]: Start difference. First operand has 174 places, 162 transitions, 479 flow. Second operand 12 states and 1472 transitions. [2021-12-21 15:19:19,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 250 transitions, 1152 flow [2021-12-21 15:19:19,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 250 transitions, 1109 flow, removed 10 selfloop flow, removed 8 redundant places. [2021-12-21 15:19:19,311 INFO L242 Difference]: Finished difference. Result has 175 places, 174 transitions, 627 flow [2021-12-21 15:19:19,311 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=448, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=627, PETRI_PLACES=175, PETRI_TRANSITIONS=174} [2021-12-21 15:19:19,312 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 16 predicate places. [2021-12-21 15:19:19,312 INFO L470 AbstractCegarLoop]: Abstraction has has 175 places, 174 transitions, 627 flow [2021-12-21 15:19:19,313 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 115.08333333333333) internal successors, (1381), 12 states have internal predecessors, (1381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:19:19,313 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:19:19,313 INFO L254 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:19:19,313 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-21 15:19:19,313 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2021-12-21 15:19:19,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:19:19,314 INFO L85 PathProgramCache]: Analyzing trace with hash 1318499785, now seen corresponding path program 3 times [2021-12-21 15:19:19,314 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:19:19,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100743333] [2021-12-21 15:19:19,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:19:19,315 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:19:19,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:19:19,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 15:19:19,443 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:19:19,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100743333] [2021-12-21 15:19:19,444 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100743333] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:19:19,444 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:19:19,444 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-21 15:19:19,444 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554152317] [2021-12-21 15:19:19,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:19:19,445 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-21 15:19:19,445 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:19:19,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-21 15:19:19,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=53, Unknown=0, NotChecked=0, Total=90 [2021-12-21 15:19:19,447 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 165 [2021-12-21 15:19:19,448 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 174 transitions, 627 flow. Second operand has 10 states, 10 states have (on average 124.9) internal successors, (1249), 10 states have internal predecessors, (1249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:19:19,448 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 15:19:19,448 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 165 [2021-12-21 15:19:19,448 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 15:19:21,617 INFO L129 PetriNetUnfolder]: 14040/22867 cut-off events. [2021-12-21 15:19:21,617 INFO L130 PetriNetUnfolder]: For 35779/41832 co-relation queries the response was YES. [2021-12-21 15:19:21,688 INFO L84 FinitePrefix]: Finished finitePrefix Result has 66682 conditions, 22867 events. 14040/22867 cut-off events. For 35779/41832 co-relation queries the response was YES. Maximal size of possible extension queue 1224. Compared 178398 event pairs, 1545 based on Foata normal form. 201/21583 useless extension candidates. Maximal degree in co-relation 66658. Up to 5638 conditions per place. [2021-12-21 15:19:21,789 INFO L132 encePairwiseOnDemand]: 151/165 looper letters, 95 selfloop transitions, 58 changer transitions 1/281 dead transitions. [2021-12-21 15:19:21,789 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 281 transitions, 1286 flow [2021-12-21 15:19:21,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-21 15:19:21,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-12-21 15:19:21,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1347 transitions. [2021-12-21 15:19:21,792 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8163636363636364 [2021-12-21 15:19:21,792 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1347 transitions. [2021-12-21 15:19:21,792 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1347 transitions. [2021-12-21 15:19:21,793 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 15:19:21,793 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1347 transitions. [2021-12-21 15:19:21,795 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 134.7) internal successors, (1347), 10 states have internal predecessors, (1347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:19:21,796 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 165.0) internal successors, (1815), 11 states have internal predecessors, (1815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:19:21,797 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 165.0) internal successors, (1815), 11 states have internal predecessors, (1815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:19:21,797 INFO L186 Difference]: Start difference. First operand has 175 places, 174 transitions, 627 flow. Second operand 10 states and 1347 transitions. [2021-12-21 15:19:21,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 281 transitions, 1286 flow [2021-12-21 15:19:21,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 281 transitions, 1225 flow, removed 14 selfloop flow, removed 9 redundant places. [2021-12-21 15:19:21,849 INFO L242 Difference]: Finished difference. Result has 172 places, 218 transitions, 831 flow [2021-12-21 15:19:21,850 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=572, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=831, PETRI_PLACES=172, PETRI_TRANSITIONS=218} [2021-12-21 15:19:21,851 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 13 predicate places. [2021-12-21 15:19:21,852 INFO L470 AbstractCegarLoop]: Abstraction has has 172 places, 218 transitions, 831 flow [2021-12-21 15:19:21,852 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 124.9) internal successors, (1249), 10 states have internal predecessors, (1249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:19:21,852 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:19:21,852 INFO L254 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:19:21,853 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-21 15:19:21,853 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2021-12-21 15:19:21,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:19:21,855 INFO L85 PathProgramCache]: Analyzing trace with hash 1113799159, now seen corresponding path program 4 times [2021-12-21 15:19:21,855 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:19:21,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330604746] [2021-12-21 15:19:21,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:19:21,855 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:19:21,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:19:21,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 15:19:21,994 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:19:21,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330604746] [2021-12-21 15:19:21,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330604746] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:19:21,995 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:19:21,995 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 15:19:21,995 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799417047] [2021-12-21 15:19:21,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:19:21,996 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 15:19:21,997 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:19:21,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 15:19:22,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-12-21 15:19:22,000 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 165 [2021-12-21 15:19:22,001 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 218 transitions, 831 flow. Second operand has 7 states, 7 states have (on average 126.57142857142857) internal successors, (886), 7 states have internal predecessors, (886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:19:22,001 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 15:19:22,001 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 165 [2021-12-21 15:19:22,002 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 15:19:25,346 INFO L129 PetriNetUnfolder]: 20024/38070 cut-off events. [2021-12-21 15:19:25,346 INFO L130 PetriNetUnfolder]: For 42114/46734 co-relation queries the response was YES. [2021-12-21 15:19:25,529 INFO L84 FinitePrefix]: Finished finitePrefix Result has 109720 conditions, 38070 events. 20024/38070 cut-off events. For 42114/46734 co-relation queries the response was YES. Maximal size of possible extension queue 2125. Compared 381409 event pairs, 4107 based on Foata normal form. 1352/37946 useless extension candidates. Maximal degree in co-relation 51763. Up to 8245 conditions per place. [2021-12-21 15:19:25,690 INFO L132 encePairwiseOnDemand]: 151/165 looper letters, 128 selfloop transitions, 84 changer transitions 0/339 dead transitions. [2021-12-21 15:19:25,691 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 339 transitions, 1813 flow [2021-12-21 15:19:25,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 15:19:25,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-12-21 15:19:25,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 946 transitions. [2021-12-21 15:19:25,693 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.819047619047619 [2021-12-21 15:19:25,693 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 946 transitions. [2021-12-21 15:19:25,693 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 946 transitions. [2021-12-21 15:19:25,694 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 15:19:25,694 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 946 transitions. [2021-12-21 15:19:25,695 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 135.14285714285714) internal successors, (946), 7 states have internal predecessors, (946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:19:25,697 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 165.0) internal successors, (1320), 8 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:19:25,697 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 165.0) internal successors, (1320), 8 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:19:25,697 INFO L186 Difference]: Start difference. First operand has 172 places, 218 transitions, 831 flow. Second operand 7 states and 946 transitions. [2021-12-21 15:19:25,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 339 transitions, 1813 flow [2021-12-21 15:19:25,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 339 transitions, 1689 flow, removed 57 selfloop flow, removed 3 redundant places. [2021-12-21 15:19:25,742 INFO L242 Difference]: Finished difference. Result has 177 places, 283 transitions, 1388 flow [2021-12-21 15:19:25,742 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=781, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1388, PETRI_PLACES=177, PETRI_TRANSITIONS=283} [2021-12-21 15:19:25,743 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 18 predicate places. [2021-12-21 15:19:25,743 INFO L470 AbstractCegarLoop]: Abstraction has has 177 places, 283 transitions, 1388 flow [2021-12-21 15:19:25,743 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 126.57142857142857) internal successors, (886), 7 states have internal predecessors, (886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:19:25,743 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:19:25,744 INFO L254 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:19:25,744 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-21 15:19:25,744 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2021-12-21 15:19:25,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:19:25,744 INFO L85 PathProgramCache]: Analyzing trace with hash -904049683, now seen corresponding path program 5 times [2021-12-21 15:19:25,745 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:19:25,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446158293] [2021-12-21 15:19:25,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:19:25,745 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:19:25,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:19:25,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 15:19:25,846 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:19:25,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446158293] [2021-12-21 15:19:25,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446158293] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:19:25,847 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:19:25,847 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-21 15:19:25,847 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627311353] [2021-12-21 15:19:25,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:19:25,848 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-21 15:19:25,848 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:19:25,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-21 15:19:25,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-21 15:19:25,849 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 165 [2021-12-21 15:19:25,850 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 283 transitions, 1388 flow. Second operand has 8 states, 8 states have (on average 125.875) internal successors, (1007), 8 states have internal predecessors, (1007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:19:25,850 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 15:19:25,850 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 165 [2021-12-21 15:19:25,850 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 15:19:29,423 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([491] L109-->L112: Formula: (= (ite (= (ite (or (not (= (mod v_~b~0_6 256) 0)) (= v_~x~0_5 1)) 1 0) 0) 0 1) v_~b~0_5) InVars {~b~0=v_~b~0_6, ~x~0=v_~x~0_5} OutVars{~b~0=v_~b~0_5, ~x~0=v_~x~0_5} AuxVars[] AssignedVars[~b~0][199], [83#L160-4true, 44#L93true, 73#L134true, 145#L112true, 286#(<= (+ 2 ~s~0) ~t~0), Black: 263#(and (<= (+ ~s~0 4) ~t~0) (<= (+ ~s~0 4) ~m5~0)), 271#(<= (+ ~s~0 1) ~t~0), 101#L74true, Black: 201#(and (<= ~x~0 0) (<= ~b~0 0) (<= 0 ~b~0)), Black: 227#(= (+ (* (- 256) (div ~b~0 256)) ~b~0) 0), Black: 276#(and (<= (+ ~s~0 1) ~t~0) (<= (+ ~s~0 1) ~m4~0)), Black: 191#(and (<= ~b~0 0) (<= 0 ~b~0)), Black: 186#(and (= (+ (* (- 256) (div ~b~0 256)) ~b~0) 0) (<= ~x~0 0) (<= ~t~0 ~s~0)), Black: 270#(<= ~s~0 ~t~0), 78#L55true, Black: 226#(and (= (+ (* (- 256) (div ~b~0 256)) ~b~0) 0) (<= ~m1~0 ~s~0)), Black: 187#(and (= (+ (* (- 256) (div ~b~0 256)) ~b~0) 0) (<= ~x~0 0) (<= ~m2~0 ~s~0)), Black: 188#(and (= (+ (* (- 256) (div ~b~0 256)) ~b~0) 0) (<= ~x~0 0)), 258#(<= (+ ~s~0 4) ~t~0)]) [2021-12-21 15:19:29,435 INFO L384 tUnfolder$Statistics]: this new event has 103 ancestors and is cut-off event [2021-12-21 15:19:29,435 INFO L387 tUnfolder$Statistics]: existing Event has 103 ancestors and is cut-off event [2021-12-21 15:19:29,436 INFO L387 tUnfolder$Statistics]: existing Event has 103 ancestors and is cut-off event [2021-12-21 15:19:29,436 INFO L387 tUnfolder$Statistics]: existing Event has 103 ancestors and is cut-off event [2021-12-21 15:19:30,665 INFO L129 PetriNetUnfolder]: 25513/47183 cut-off events. [2021-12-21 15:19:30,666 INFO L130 PetriNetUnfolder]: For 89096/98166 co-relation queries the response was YES. [2021-12-21 15:19:30,904 INFO L84 FinitePrefix]: Finished finitePrefix Result has 158297 conditions, 47183 events. 25513/47183 cut-off events. For 89096/98166 co-relation queries the response was YES. Maximal size of possible extension queue 2703. Compared 473679 event pairs, 4721 based on Foata normal form. 1931/46703 useless extension candidates. Maximal degree in co-relation 57954. Up to 11796 conditions per place. [2021-12-21 15:19:31,117 INFO L132 encePairwiseOnDemand]: 151/165 looper letters, 129 selfloop transitions, 166 changer transitions 0/422 dead transitions. [2021-12-21 15:19:31,117 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 422 transitions, 2718 flow [2021-12-21 15:19:31,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-21 15:19:31,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-12-21 15:19:31,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1094 transitions. [2021-12-21 15:19:31,121 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8287878787878787 [2021-12-21 15:19:31,121 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1094 transitions. [2021-12-21 15:19:31,121 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1094 transitions. [2021-12-21 15:19:31,122 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 15:19:31,122 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1094 transitions. [2021-12-21 15:19:31,124 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 136.75) internal successors, (1094), 8 states have internal predecessors, (1094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:19:31,126 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 165.0) internal successors, (1485), 9 states have internal predecessors, (1485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:19:31,127 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 165.0) internal successors, (1485), 9 states have internal predecessors, (1485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:19:31,127 INFO L186 Difference]: Start difference. First operand has 177 places, 283 transitions, 1388 flow. Second operand 8 states and 1094 transitions. [2021-12-21 15:19:31,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 422 transitions, 2718 flow [2021-12-21 15:19:31,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 422 transitions, 2694 flow, removed 10 selfloop flow, removed 2 redundant places. [2021-12-21 15:19:31,239 INFO L242 Difference]: Finished difference. Result has 184 places, 360 transitions, 2343 flow [2021-12-21 15:19:31,240 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=1374, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2343, PETRI_PLACES=184, PETRI_TRANSITIONS=360} [2021-12-21 15:19:31,240 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 25 predicate places. [2021-12-21 15:19:31,241 INFO L470 AbstractCegarLoop]: Abstraction has has 184 places, 360 transitions, 2343 flow [2021-12-21 15:19:31,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 125.875) internal successors, (1007), 8 states have internal predecessors, (1007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:19:31,241 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:19:31,241 INFO L254 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:19:31,241 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-21 15:19:31,242 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2021-12-21 15:19:31,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:19:31,242 INFO L85 PathProgramCache]: Analyzing trace with hash -147796337, now seen corresponding path program 6 times [2021-12-21 15:19:31,242 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:19:31,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495459453] [2021-12-21 15:19:31,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:19:31,243 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:19:31,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:19:31,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 15:19:31,335 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:19:31,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495459453] [2021-12-21 15:19:31,335 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495459453] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:19:31,335 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:19:31,335 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-21 15:19:31,335 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182505319] [2021-12-21 15:19:31,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:19:31,336 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-21 15:19:31,336 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:19:31,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-21 15:19:31,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-12-21 15:19:31,337 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 165 [2021-12-21 15:19:31,338 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 360 transitions, 2343 flow. Second operand has 9 states, 9 states have (on average 125.33333333333333) internal successors, (1128), 9 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:19:31,338 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 15:19:31,338 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 165 [2021-12-21 15:19:31,339 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 15:19:34,585 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([486] L93-->L96: Formula: (= v_~s~0_79 (+ v_~s~0_80 1)) InVars {~s~0=v_~s~0_80} OutVars{thread3Thread1of1ForFork4_#t~post6#1=|v_thread3Thread1of1ForFork4_#t~post6#1_1|, ~s~0=v_~s~0_79} AuxVars[] AssignedVars[thread3Thread1of1ForFork4_#t~post6#1, ~s~0][197], [42#L115true, 24#L52true, 83#L160-4true, Black: 291#(and (<= (+ 2 ~s~0) ~m3~0) (<= (+ 2 ~s~0) ~t~0)), Black: 284#(<= ~s~0 ~t~0), 131#L128true, Black: 263#(and (<= (+ ~s~0 4) ~t~0) (<= (+ ~s~0 4) ~m5~0)), 57#L96true, Black: 201#(and (<= ~x~0 0) (<= ~b~0 0) (<= 0 ~b~0)), Black: 227#(= (+ (* (- 256) (div ~b~0 256)) ~b~0) 0), Black: 191#(and (<= ~b~0 0) (<= 0 ~b~0)), Black: 276#(and (<= (+ ~s~0 1) ~t~0) (<= (+ ~s~0 1) ~m4~0)), Black: 186#(and (= (+ (* (- 256) (div ~b~0 256)) ~b~0) 0) (<= ~x~0 0) (<= ~t~0 ~s~0)), 301#(<= (+ 2 ~s~0) ~t~0), 21#L71true, Black: 187#(and (= (+ (* (- 256) (div ~b~0 256)) ~b~0) 0) (<= ~x~0 0) (<= ~m2~0 ~s~0)), Black: 226#(and (= (+ (* (- 256) (div ~b~0 256)) ~b~0) 0) (<= ~m1~0 ~s~0)), 257#(<= (+ 3 ~s~0) ~t~0), Black: 188#(and (= (+ (* (- 256) (div ~b~0 256)) ~b~0) 0) (<= ~x~0 0)), 285#(<= (+ ~s~0 1) ~t~0), 270#(<= ~s~0 ~t~0)]) [2021-12-21 15:19:34,586 INFO L384 tUnfolder$Statistics]: this new event has 101 ancestors and is cut-off event [2021-12-21 15:19:34,586 INFO L387 tUnfolder$Statistics]: existing Event has 101 ancestors and is cut-off event [2021-12-21 15:19:34,586 INFO L387 tUnfolder$Statistics]: existing Event has 101 ancestors and is cut-off event [2021-12-21 15:19:34,586 INFO L387 tUnfolder$Statistics]: existing Event has 101 ancestors and is cut-off event [2021-12-21 15:19:34,588 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([497] L128-->L131: Formula: (= v_~b~0_7 (ite (= (ite (or (= v_~x~0_6 1) (not (= 0 (mod v_~b~0_8 256)))) 1 0) 0) 0 1)) InVars {~b~0=v_~b~0_8, ~x~0=v_~x~0_6} OutVars{~b~0=v_~b~0_7, ~x~0=v_~x~0_6} AuxVars[] AssignedVars[~b~0][261], [42#L115true, 24#L52true, 83#L160-4true, Black: 291#(and (<= (+ 2 ~s~0) ~m3~0) (<= (+ 2 ~s~0) ~t~0)), 44#L93true, Black: 284#(<= ~s~0 ~t~0), 302#(<= (+ 3 ~s~0) ~t~0), 286#(<= (+ 2 ~s~0) ~t~0), Black: 263#(and (<= (+ ~s~0 4) ~t~0) (<= (+ ~s~0 4) ~m5~0)), 271#(<= (+ ~s~0 1) ~t~0), Black: 201#(and (<= ~x~0 0) (<= ~b~0 0) (<= 0 ~b~0)), Black: 227#(= (+ (* (- 256) (div ~b~0 256)) ~b~0) 0), Black: 191#(and (<= ~b~0 0) (<= 0 ~b~0)), Black: 276#(and (<= (+ ~s~0 1) ~t~0) (<= (+ ~s~0 1) ~m4~0)), Black: 186#(and (= (+ (* (- 256) (div ~b~0 256)) ~b~0) 0) (<= ~x~0 0) (<= ~t~0 ~s~0)), Black: 270#(<= ~s~0 ~t~0), 21#L71true, Black: 187#(and (= (+ (* (- 256) (div ~b~0 256)) ~b~0) 0) (<= ~x~0 0) (<= ~m2~0 ~s~0)), Black: 226#(and (= (+ (* (- 256) (div ~b~0 256)) ~b~0) 0) (<= ~m1~0 ~s~0)), Black: 188#(and (= (+ (* (- 256) (div ~b~0 256)) ~b~0) 0) (<= ~x~0 0)), 82#L131true, 258#(<= (+ ~s~0 4) ~t~0)]) [2021-12-21 15:19:34,588 INFO L384 tUnfolder$Statistics]: this new event has 101 ancestors and is cut-off event [2021-12-21 15:19:34,588 INFO L387 tUnfolder$Statistics]: existing Event has 101 ancestors and is cut-off event [2021-12-21 15:19:34,588 INFO L387 tUnfolder$Statistics]: existing Event has 101 ancestors and is cut-off event [2021-12-21 15:19:34,588 INFO L387 tUnfolder$Statistics]: existing Event has 101 ancestors and is cut-off event [2021-12-21 15:19:34,589 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([474] L55-->L58: Formula: (= v_~s~0_59 (+ v_~s~0_60 1)) InVars {~s~0=v_~s~0_60} OutVars{thread1Thread1of1ForFork0_#t~post2#1=|v_thread1Thread1of1ForFork0_#t~post2#1_1|, ~s~0=v_~s~0_59} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_#t~post2#1, ~s~0][241], [42#L115true, 83#L160-4true, Black: 291#(and (<= (+ 2 ~s~0) ~m3~0) (<= (+ 2 ~s~0) ~t~0)), 44#L93true, Black: 284#(<= ~s~0 ~t~0), 131#L128true, Black: 263#(and (<= (+ ~s~0 4) ~t~0) (<= (+ ~s~0 4) ~m5~0)), Black: 201#(and (<= ~x~0 0) (<= ~b~0 0) (<= 0 ~b~0)), Black: 227#(= (+ (* (- 256) (div ~b~0 256)) ~b~0) 0), Black: 191#(and (<= ~b~0 0) (<= 0 ~b~0)), Black: 276#(and (<= (+ ~s~0 1) ~t~0) (<= (+ ~s~0 1) ~m4~0)), Black: 186#(and (= (+ (* (- 256) (div ~b~0 256)) ~b~0) 0) (<= ~x~0 0) (<= ~t~0 ~s~0)), 301#(<= (+ 2 ~s~0) ~t~0), 21#L71true, Black: 187#(and (= (+ (* (- 256) (div ~b~0 256)) ~b~0) 0) (<= ~x~0 0) (<= ~m2~0 ~s~0)), Black: 226#(and (= (+ (* (- 256) (div ~b~0 256)) ~b~0) 0) (<= ~m1~0 ~s~0)), 257#(<= (+ 3 ~s~0) ~t~0), Black: 188#(and (= (+ (* (- 256) (div ~b~0 256)) ~b~0) 0) (<= ~x~0 0)), 127#L58true, 270#(<= ~s~0 ~t~0), 285#(<= (+ ~s~0 1) ~t~0)]) [2021-12-21 15:19:34,589 INFO L384 tUnfolder$Statistics]: this new event has 102 ancestors and is cut-off event [2021-12-21 15:19:34,589 INFO L387 tUnfolder$Statistics]: existing Event has 102 ancestors and is cut-off event [2021-12-21 15:19:34,589 INFO L387 tUnfolder$Statistics]: existing Event has 102 ancestors and is cut-off event [2021-12-21 15:19:34,589 INFO L387 tUnfolder$Statistics]: existing Event has 102 ancestors and is cut-off event [2021-12-21 15:19:34,787 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([497] L128-->L131: Formula: (= v_~b~0_7 (ite (= (ite (or (= v_~x~0_6 1) (not (= 0 (mod v_~b~0_8 256)))) 1 0) 0) 0 1)) InVars {~b~0=v_~b~0_8, ~x~0=v_~x~0_6} OutVars{~b~0=v_~b~0_7, ~x~0=v_~x~0_6} AuxVars[] AssignedVars[~b~0][261], [42#L115true, 83#L160-4true, Black: 291#(and (<= (+ 2 ~s~0) ~m3~0) (<= (+ 2 ~s~0) ~t~0)), 44#L93true, Black: 284#(<= ~s~0 ~t~0), 302#(<= (+ 3 ~s~0) ~t~0), 286#(<= (+ 2 ~s~0) ~t~0), Black: 263#(and (<= (+ ~s~0 4) ~t~0) (<= (+ ~s~0 4) ~m5~0)), 271#(<= (+ ~s~0 1) ~t~0), Black: 201#(and (<= ~x~0 0) (<= ~b~0 0) (<= 0 ~b~0)), Black: 227#(= (+ (* (- 256) (div ~b~0 256)) ~b~0) 0), Black: 191#(and (<= ~b~0 0) (<= 0 ~b~0)), Black: 276#(and (<= (+ ~s~0 1) ~t~0) (<= (+ ~s~0 1) ~m4~0)), 78#L55true, Black: 270#(<= ~s~0 ~t~0), Black: 186#(and (= (+ (* (- 256) (div ~b~0 256)) ~b~0) 0) (<= ~x~0 0) (<= ~t~0 ~s~0)), Black: 226#(and (= (+ (* (- 256) (div ~b~0 256)) ~b~0) 0) (<= ~m1~0 ~s~0)), Black: 187#(and (= (+ (* (- 256) (div ~b~0 256)) ~b~0) 0) (<= ~x~0 0) (<= ~m2~0 ~s~0)), 21#L71true, Black: 188#(and (= (+ (* (- 256) (div ~b~0 256)) ~b~0) 0) (<= ~x~0 0)), 82#L131true, 258#(<= (+ ~s~0 4) ~t~0)]) [2021-12-21 15:19:34,787 INFO L384 tUnfolder$Statistics]: this new event has 102 ancestors and is cut-off event [2021-12-21 15:19:34,787 INFO L387 tUnfolder$Statistics]: existing Event has 102 ancestors and is cut-off event [2021-12-21 15:19:34,787 INFO L387 tUnfolder$Statistics]: existing Event has 102 ancestors and is cut-off event [2021-12-21 15:19:34,787 INFO L387 tUnfolder$Statistics]: existing Event has 102 ancestors and is cut-off event [2021-12-21 15:19:34,803 INFO L382 tUnfolder$Statistics]: inserting event number 5 for the transition-marking pair ([497] L128-->L131: Formula: (= v_~b~0_7 (ite (= (ite (or (= v_~x~0_6 1) (not (= 0 (mod v_~b~0_8 256)))) 1 0) 0) 0 1)) InVars {~b~0=v_~b~0_8, ~x~0=v_~x~0_6} OutVars{~b~0=v_~b~0_7, ~x~0=v_~x~0_6} AuxVars[] AssignedVars[~b~0][261], [42#L115true, 83#L160-4true, 44#L93true, Black: 291#(and (<= (+ 2 ~s~0) ~m3~0) (<= (+ 2 ~s~0) ~t~0)), Black: 284#(<= ~s~0 ~t~0), 302#(<= (+ 3 ~s~0) ~t~0), 286#(<= (+ 2 ~s~0) ~t~0), Black: 263#(and (<= (+ ~s~0 4) ~t~0) (<= (+ ~s~0 4) ~m5~0)), 271#(<= (+ ~s~0 1) ~t~0), Black: 201#(and (<= ~x~0 0) (<= ~b~0 0) (<= 0 ~b~0)), Black: 227#(= (+ (* (- 256) (div ~b~0 256)) ~b~0) 0), Black: 191#(and (<= ~b~0 0) (<= 0 ~b~0)), Black: 276#(and (<= (+ ~s~0 1) ~t~0) (<= (+ ~s~0 1) ~m4~0)), Black: 186#(and (= (+ (* (- 256) (div ~b~0 256)) ~b~0) 0) (<= ~x~0 0) (<= ~t~0 ~s~0)), Black: 270#(<= ~s~0 ~t~0), 78#L55true, 21#L71true, Black: 187#(and (= (+ (* (- 256) (div ~b~0 256)) ~b~0) 0) (<= ~x~0 0) (<= ~m2~0 ~s~0)), Black: 226#(and (= (+ (* (- 256) (div ~b~0 256)) ~b~0) 0) (<= ~m1~0 ~s~0)), Black: 188#(and (= (+ (* (- 256) (div ~b~0 256)) ~b~0) 0) (<= ~x~0 0)), 82#L131true, 258#(<= (+ ~s~0 4) ~t~0)]) [2021-12-21 15:19:34,803 INFO L384 tUnfolder$Statistics]: this new event has 102 ancestors and is cut-off event [2021-12-21 15:19:34,803 INFO L387 tUnfolder$Statistics]: existing Event has 102 ancestors and is cut-off event [2021-12-21 15:19:34,803 INFO L387 tUnfolder$Statistics]: existing Event has 102 ancestors and is cut-off event [2021-12-21 15:19:34,803 INFO L387 tUnfolder$Statistics]: existing Event has 102 ancestors and is cut-off event [2021-12-21 15:19:34,803 INFO L387 tUnfolder$Statistics]: existing Event has 102 ancestors and is cut-off event [2021-12-21 15:19:34,804 INFO L382 tUnfolder$Statistics]: inserting event number 5 for the transition-marking pair ([474] L55-->L58: Formula: (= v_~s~0_59 (+ v_~s~0_60 1)) InVars {~s~0=v_~s~0_60} OutVars{thread1Thread1of1ForFork0_#t~post2#1=|v_thread1Thread1of1ForFork0_#t~post2#1_1|, ~s~0=v_~s~0_59} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_#t~post2#1, ~s~0][241], [42#L115true, 83#L160-4true, 44#L93true, Black: 291#(and (<= (+ 2 ~s~0) ~m3~0) (<= (+ 2 ~s~0) ~t~0)), Black: 284#(<= ~s~0 ~t~0), 131#L128true, Black: 263#(and (<= (+ ~s~0 4) ~t~0) (<= (+ ~s~0 4) ~m5~0)), Black: 201#(and (<= ~x~0 0) (<= ~b~0 0) (<= 0 ~b~0)), Black: 227#(= (+ (* (- 256) (div ~b~0 256)) ~b~0) 0), Black: 276#(and (<= (+ ~s~0 1) ~t~0) (<= (+ ~s~0 1) ~m4~0)), Black: 191#(and (<= ~b~0 0) (<= 0 ~b~0)), Black: 186#(and (= (+ (* (- 256) (div ~b~0 256)) ~b~0) 0) (<= ~x~0 0) (<= ~t~0 ~s~0)), 301#(<= (+ 2 ~s~0) ~t~0), 21#L71true, Black: 187#(and (= (+ (* (- 256) (div ~b~0 256)) ~b~0) 0) (<= ~x~0 0) (<= ~m2~0 ~s~0)), 257#(<= (+ 3 ~s~0) ~t~0), Black: 226#(and (= (+ (* (- 256) (div ~b~0 256)) ~b~0) 0) (<= ~m1~0 ~s~0)), Black: 188#(and (= (+ (* (- 256) (div ~b~0 256)) ~b~0) 0) (<= ~x~0 0)), 127#L58true, 285#(<= (+ ~s~0 1) ~t~0), 270#(<= ~s~0 ~t~0)]) [2021-12-21 15:19:34,804 INFO L384 tUnfolder$Statistics]: this new event has 102 ancestors and is cut-off event [2021-12-21 15:19:34,804 INFO L387 tUnfolder$Statistics]: existing Event has 102 ancestors and is cut-off event [2021-12-21 15:19:34,804 INFO L387 tUnfolder$Statistics]: existing Event has 102 ancestors and is cut-off event [2021-12-21 15:19:34,804 INFO L387 tUnfolder$Statistics]: existing Event has 102 ancestors and is cut-off event [2021-12-21 15:19:34,804 INFO L387 tUnfolder$Statistics]: existing Event has 102 ancestors and is cut-off event [2021-12-21 15:19:36,568 INFO L129 PetriNetUnfolder]: 26530/47127 cut-off events. [2021-12-21 15:19:36,569 INFO L130 PetriNetUnfolder]: For 149341/160102 co-relation queries the response was YES. [2021-12-21 15:19:36,966 INFO L84 FinitePrefix]: Finished finitePrefix Result has 185117 conditions, 47127 events. 26530/47127 cut-off events. For 149341/160102 co-relation queries the response was YES. Maximal size of possible extension queue 2587. Compared 453882 event pairs, 3807 based on Foata normal form. 2373/47034 useless extension candidates. Maximal degree in co-relation 127011. Up to 12762 conditions per place. [2021-12-21 15:19:37,238 INFO L132 encePairwiseOnDemand]: 151/165 looper letters, 114 selfloop transitions, 218 changer transitions 2/461 dead transitions. [2021-12-21 15:19:37,239 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 461 transitions, 3576 flow [2021-12-21 15:19:37,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-21 15:19:37,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-12-21 15:19:37,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1230 transitions. [2021-12-21 15:19:37,250 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8282828282828283 [2021-12-21 15:19:37,250 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1230 transitions. [2021-12-21 15:19:37,251 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1230 transitions. [2021-12-21 15:19:37,251 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 15:19:37,251 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1230 transitions. [2021-12-21 15:19:37,253 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 136.66666666666666) internal successors, (1230), 9 states have internal predecessors, (1230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:19:37,255 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 165.0) internal successors, (1650), 10 states have internal predecessors, (1650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:19:37,255 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 165.0) internal successors, (1650), 10 states have internal predecessors, (1650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:19:37,256 INFO L186 Difference]: Start difference. First operand has 184 places, 360 transitions, 2343 flow. Second operand 9 states and 1230 transitions. [2021-12-21 15:19:37,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 461 transitions, 3576 flow [2021-12-21 15:19:37,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 461 transitions, 3524 flow, removed 24 selfloop flow, removed 2 redundant places. [2021-12-21 15:19:37,889 INFO L242 Difference]: Finished difference. Result has 192 places, 395 transitions, 3138 flow [2021-12-21 15:19:37,890 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=2319, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=360, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=187, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3138, PETRI_PLACES=192, PETRI_TRANSITIONS=395} [2021-12-21 15:19:37,891 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 33 predicate places. [2021-12-21 15:19:37,891 INFO L470 AbstractCegarLoop]: Abstraction has has 192 places, 395 transitions, 3138 flow [2021-12-21 15:19:37,891 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 125.33333333333333) internal successors, (1128), 9 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:19:37,891 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:19:37,892 INFO L254 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:19:37,892 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-21 15:19:37,892 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2021-12-21 15:19:37,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:19:37,893 INFO L85 PathProgramCache]: Analyzing trace with hash -1325641699, now seen corresponding path program 7 times [2021-12-21 15:19:37,893 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:19:37,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415902864] [2021-12-21 15:19:37,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:19:37,893 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:19:37,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:19:37,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 15:19:37,972 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:19:37,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415902864] [2021-12-21 15:19:37,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415902864] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:19:37,973 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:19:37,973 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 15:19:37,973 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974863976] [2021-12-21 15:19:37,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:19:37,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 15:19:37,974 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:19:37,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 15:19:37,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-12-21 15:19:37,975 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 165 [2021-12-21 15:19:37,976 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 395 transitions, 3138 flow. Second operand has 7 states, 7 states have (on average 126.57142857142857) internal successors, (886), 7 states have internal predecessors, (886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:19:37,976 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 15:19:37,976 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 165 [2021-12-21 15:19:37,976 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 15:19:43,509 INFO L129 PetriNetUnfolder]: 25014/47806 cut-off events. [2021-12-21 15:19:43,509 INFO L130 PetriNetUnfolder]: For 192179/199828 co-relation queries the response was YES. [2021-12-21 15:19:43,823 INFO L84 FinitePrefix]: Finished finitePrefix Result has 200073 conditions, 47806 events. 25014/47806 cut-off events. For 192179/199828 co-relation queries the response was YES. Maximal size of possible extension queue 2716. Compared 498570 event pairs, 5909 based on Foata normal form. 1999/47720 useless extension candidates. Maximal degree in co-relation 105004. Up to 12767 conditions per place. [2021-12-21 15:19:44,061 INFO L132 encePairwiseOnDemand]: 151/165 looper letters, 209 selfloop transitions, 137 changer transitions 0/473 dead transitions. [2021-12-21 15:19:44,061 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 473 transitions, 4409 flow [2021-12-21 15:19:44,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 15:19:44,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-12-21 15:19:44,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 945 transitions. [2021-12-21 15:19:44,082 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8181818181818182 [2021-12-21 15:19:44,082 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 945 transitions. [2021-12-21 15:19:44,082 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 945 transitions. [2021-12-21 15:19:44,082 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 15:19:44,082 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 945 transitions. [2021-12-21 15:19:44,084 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 135.0) internal successors, (945), 7 states have internal predecessors, (945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:19:44,085 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 165.0) internal successors, (1320), 8 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:19:44,085 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 165.0) internal successors, (1320), 8 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:19:44,086 INFO L186 Difference]: Start difference. First operand has 192 places, 395 transitions, 3138 flow. Second operand 7 states and 945 transitions. [2021-12-21 15:19:44,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 473 transitions, 4409 flow [2021-12-21 15:19:44,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 473 transitions, 4378 flow, removed 7 selfloop flow, removed 3 redundant places. [2021-12-21 15:19:44,945 INFO L242 Difference]: Finished difference. Result has 197 places, 420 transitions, 3801 flow [2021-12-21 15:19:44,946 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=3111, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=395, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3801, PETRI_PLACES=197, PETRI_TRANSITIONS=420} [2021-12-21 15:19:44,946 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 38 predicate places. [2021-12-21 15:19:44,947 INFO L470 AbstractCegarLoop]: Abstraction has has 197 places, 420 transitions, 3801 flow [2021-12-21 15:19:44,947 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 126.57142857142857) internal successors, (886), 7 states have internal predecessors, (886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:19:44,947 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:19:44,947 INFO L254 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:19:44,948 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-21 15:19:44,948 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2021-12-21 15:19:44,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:19:44,948 INFO L85 PathProgramCache]: Analyzing trace with hash 1392558915, now seen corresponding path program 8 times [2021-12-21 15:19:44,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:19:44,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423384224] [2021-12-21 15:19:44,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:19:44,949 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:19:45,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:19:45,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 15:19:45,168 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:19:45,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423384224] [2021-12-21 15:19:45,169 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423384224] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:19:45,169 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:19:45,169 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 15:19:45,169 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026588958] [2021-12-21 15:19:45,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:19:45,170 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 15:19:45,170 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:19:45,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 15:19:45,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-12-21 15:19:45,171 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 165 [2021-12-21 15:19:45,172 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 420 transitions, 3801 flow. Second operand has 7 states, 7 states have (on average 126.57142857142857) internal successors, (886), 7 states have internal predecessors, (886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:19:45,172 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 15:19:45,172 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 165 [2021-12-21 15:19:45,172 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 15:19:50,315 INFO L129 PetriNetUnfolder]: 23131/44122 cut-off events. [2021-12-21 15:19:50,315 INFO L130 PetriNetUnfolder]: For 228108/240901 co-relation queries the response was YES. [2021-12-21 15:19:50,611 INFO L84 FinitePrefix]: Finished finitePrefix Result has 200748 conditions, 44122 events. 23131/44122 cut-off events. For 228108/240901 co-relation queries the response was YES. Maximal size of possible extension queue 2695. Compared 459176 event pairs, 5400 based on Foata normal form. 3096/45038 useless extension candidates. Maximal degree in co-relation 131312. Up to 12823 conditions per place. [2021-12-21 15:19:50,843 INFO L132 encePairwiseOnDemand]: 151/165 looper letters, 207 selfloop transitions, 176 changer transitions 1/507 dead transitions. [2021-12-21 15:19:50,844 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 507 transitions, 5416 flow [2021-12-21 15:19:50,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 15:19:50,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-12-21 15:19:50,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 947 transitions. [2021-12-21 15:19:50,846 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8199134199134199 [2021-12-21 15:19:50,846 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 947 transitions. [2021-12-21 15:19:50,846 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 947 transitions. [2021-12-21 15:19:50,846 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 15:19:50,847 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 947 transitions. [2021-12-21 15:19:50,848 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 135.28571428571428) internal successors, (947), 7 states have internal predecessors, (947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:19:50,849 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 165.0) internal successors, (1320), 8 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:19:50,850 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 165.0) internal successors, (1320), 8 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:19:50,850 INFO L186 Difference]: Start difference. First operand has 197 places, 420 transitions, 3801 flow. Second operand 7 states and 947 transitions. [2021-12-21 15:19:50,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 507 transitions, 5416 flow [2021-12-21 15:19:51,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 507 transitions, 5183 flow, removed 4 selfloop flow, removed 5 redundant places. [2021-12-21 15:19:51,300 INFO L242 Difference]: Finished difference. Result has 200 places, 456 transitions, 4660 flow [2021-12-21 15:19:51,301 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=3561, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=413, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=133, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4660, PETRI_PLACES=200, PETRI_TRANSITIONS=456} [2021-12-21 15:19:51,301 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 41 predicate places. [2021-12-21 15:19:51,301 INFO L470 AbstractCegarLoop]: Abstraction has has 200 places, 456 transitions, 4660 flow [2021-12-21 15:19:51,302 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 126.57142857142857) internal successors, (886), 7 states have internal predecessors, (886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:19:51,302 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:19:51,302 INFO L254 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:19:51,302 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-21 15:19:51,302 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2021-12-21 15:19:51,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:19:51,303 INFO L85 PathProgramCache]: Analyzing trace with hash 62190035, now seen corresponding path program 9 times [2021-12-21 15:19:51,303 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:19:51,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299442237] [2021-12-21 15:19:51,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:19:51,303 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:19:51,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:19:51,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 15:19:51,372 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:19:51,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299442237] [2021-12-21 15:19:51,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299442237] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:19:51,372 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:19:51,372 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 15:19:51,372 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927448081] [2021-12-21 15:19:51,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:19:51,373 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 15:19:51,373 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:19:51,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 15:19:51,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-12-21 15:19:51,374 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 165 [2021-12-21 15:19:51,375 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 456 transitions, 4660 flow. Second operand has 7 states, 7 states have (on average 126.57142857142857) internal successors, (886), 7 states have internal predecessors, (886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:19:51,375 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 15:19:51,375 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 165 [2021-12-21 15:19:51,375 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand