./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/goblint-regression/36-apron_21-traces-cluster-based_true.i --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/goblint-regression/36-apron_21-traces-cluster-based_true.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash cec155e54548239c459fec40910e358deb5fad2ceffa658bfdeefddd1bc9e166 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 15:14:19,489 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 15:14:19,497 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 15:14:19,529 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 15:14:19,530 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 15:14:19,533 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 15:14:19,534 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 15:14:19,539 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 15:14:19,541 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 15:14:19,546 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 15:14:19,547 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 15:14:19,547 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 15:14:19,548 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 15:14:19,549 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 15:14:19,551 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 15:14:19,552 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 15:14:19,555 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 15:14:19,556 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 15:14:19,557 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 15:14:19,559 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 15:14:19,562 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 15:14:19,563 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 15:14:19,563 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 15:14:19,564 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 15:14:19,566 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 15:14:19,567 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 15:14:19,568 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 15:14:19,568 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 15:14:19,569 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 15:14:19,570 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 15:14:19,570 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 15:14:19,571 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 15:14:19,572 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 15:14:19,573 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 15:14:19,574 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 15:14:19,574 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 15:14:19,574 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 15:14:19,574 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 15:14:19,575 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 15:14:19,575 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 15:14:19,576 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 15:14:19,576 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-21 15:14:19,602 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 15:14:19,602 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 15:14:19,602 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 15:14:19,603 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 15:14:19,603 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 15:14:19,603 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 15:14:19,604 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 15:14:19,604 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 15:14:19,604 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 15:14:19,604 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 15:14:19,604 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-21 15:14:19,605 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 15:14:19,605 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-21 15:14:19,605 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 15:14:19,605 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 15:14:19,605 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 15:14:19,605 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 15:14:19,605 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-21 15:14:19,606 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 15:14:19,606 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 15:14:19,606 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 15:14:19,606 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 15:14:19,606 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 15:14:19,606 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 15:14:19,606 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 15:14:19,607 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 15:14:19,607 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 15:14:19,607 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 15:14:19,607 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 15:14:19,607 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 15:14:19,607 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-21 15:14:19,608 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-21 15:14:19,608 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 15:14:19,608 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 15:14:19,608 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cec155e54548239c459fec40910e358deb5fad2ceffa658bfdeefddd1bc9e166 [2021-12-21 15:14:19,767 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 15:14:19,782 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 15:14:19,784 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 15:14:19,785 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 15:14:19,785 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 15:14:19,786 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/36-apron_21-traces-cluster-based_true.i [2021-12-21 15:14:19,843 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3cbf71f07/8062cc13c982455b8a405e5c0ec06ca0/FLAG5f7804288 [2021-12-21 15:14:20,216 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 15:14:20,216 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/36-apron_21-traces-cluster-based_true.i [2021-12-21 15:14:20,225 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3cbf71f07/8062cc13c982455b8a405e5c0ec06ca0/FLAG5f7804288 [2021-12-21 15:14:20,580 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3cbf71f07/8062cc13c982455b8a405e5c0ec06ca0 [2021-12-21 15:14:20,582 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 15:14:20,583 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 15:14:20,584 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 15:14:20,584 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 15:14:20,586 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 15:14:20,587 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 03:14:20" (1/1) ... [2021-12-21 15:14:20,587 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23c3f173 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:14:20, skipping insertion in model container [2021-12-21 15:14:20,587 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 03:14:20" (1/1) ... [2021-12-21 15:14:20,592 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 15:14:20,613 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 15:14:20,762 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/goblint-regression/36-apron_21-traces-cluster-based_true.i[1092,1105] [2021-12-21 15:14:20,902 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 15:14:20,912 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 15:14:20,921 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/goblint-regression/36-apron_21-traces-cluster-based_true.i[1092,1105] [2021-12-21 15:14:20,949 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 15:14:20,981 INFO L208 MainTranslator]: Completed translation [2021-12-21 15:14:20,981 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:14:20 WrapperNode [2021-12-21 15:14:20,982 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 15:14:20,983 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 15:14:20,983 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 15:14:20,983 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 15:14:20,988 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:14:20" (1/1) ... [2021-12-21 15:14:21,009 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:14:20" (1/1) ... [2021-12-21 15:14:21,034 INFO L137 Inliner]: procedures = 165, calls = 45, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 129 [2021-12-21 15:14:21,035 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 15:14:21,035 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 15:14:21,035 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 15:14:21,036 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 15:14:21,041 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:14:20" (1/1) ... [2021-12-21 15:14:21,041 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:14:20" (1/1) ... [2021-12-21 15:14:21,054 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:14:20" (1/1) ... [2021-12-21 15:14:21,055 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:14:20" (1/1) ... [2021-12-21 15:14:21,061 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:14:20" (1/1) ... [2021-12-21 15:14:21,065 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:14:20" (1/1) ... [2021-12-21 15:14:21,067 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:14:20" (1/1) ... [2021-12-21 15:14:21,070 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 15:14:21,071 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 15:14:21,076 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 15:14:21,076 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 15:14:21,078 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:14:20" (1/1) ... [2021-12-21 15:14:21,085 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 15:14:21,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:14:21,111 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 15:14:21,129 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 15:14:21,152 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2021-12-21 15:14:21,152 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2021-12-21 15:14:21,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-21 15:14:21,152 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2021-12-21 15:14:21,153 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 15:14:21,153 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-21 15:14:21,153 INFO L130 BoogieDeclarations]: Found specification of procedure t3_fun [2021-12-21 15:14:21,153 INFO L138 BoogieDeclarations]: Found implementation of procedure t3_fun [2021-12-21 15:14:21,153 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2021-12-21 15:14:21,153 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2021-12-21 15:14:21,153 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-21 15:14:21,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 15:14:21,154 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 15:14:21,154 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 15:14:21,155 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 15:14:21,267 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 15:14:21,269 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 15:14:21,464 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 15:14:21,470 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 15:14:21,470 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-21 15:14:21,472 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 03:14:21 BoogieIcfgContainer [2021-12-21 15:14:21,472 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 15:14:21,473 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 15:14:21,473 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 15:14:21,476 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 15:14:21,476 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 03:14:20" (1/3) ... [2021-12-21 15:14:21,477 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48b02e05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 03:14:21, skipping insertion in model container [2021-12-21 15:14:21,477 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:14:20" (2/3) ... [2021-12-21 15:14:21,477 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48b02e05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 03:14:21, skipping insertion in model container [2021-12-21 15:14:21,477 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 03:14:21" (3/3) ... [2021-12-21 15:14:21,478 INFO L111 eAbstractionObserver]: Analyzing ICFG 36-apron_21-traces-cluster-based_true.i [2021-12-21 15:14:21,481 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-12-21 15:14:21,482 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 15:14:21,482 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-12-21 15:14:21,482 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-12-21 15:14:21,522 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork2_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,522 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork2_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,522 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork2_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,522 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork2_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,523 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork2_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,523 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork2_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,523 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork2_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,523 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork2_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,523 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork2_#t~nondet5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,524 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork2_#t~nondet5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,524 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork2_#t~nondet5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,524 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork2_~x~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,525 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork2_#t~nondet5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,525 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork2_~x~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,525 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork2_#t~nondet5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,525 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork2_#t~nondet5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,525 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork2_#t~nondet6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,526 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork2_#t~nondet6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,526 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork2_#t~nondet6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,526 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork2_~y~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,526 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork2_#t~nondet6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,526 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork2_~y~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,527 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork2_#t~nondet6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,527 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork2_#t~nondet6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,527 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork2_#t~nondet7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,527 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork2_#t~nondet7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,527 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork2_#t~nondet7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,528 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork2_#t~nondet7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,528 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork2_~x~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,528 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork2_~x~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,528 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork2_~y~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,528 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork2_~y~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,529 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork2_~x~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,529 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork2_~y~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,529 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork2___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,529 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork2_~x~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,529 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork2_~y~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,529 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork2___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,530 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork2___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,530 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork2___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,530 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork2___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,530 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork2___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,530 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork2___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,530 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork2___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,531 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork2___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,531 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork2___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,531 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork2___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,531 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork2___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,531 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,532 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,532 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,532 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,532 WARN L322 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,533 WARN L322 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,533 WARN L322 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,533 WARN L322 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,533 WARN L322 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,533 WARN L322 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,533 WARN L322 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,533 WARN L322 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,534 WARN L322 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork0_#t~nondet8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,534 WARN L322 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork0_#t~nondet8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,535 WARN L322 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork0_#t~nondet8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,535 WARN L322 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork0_~x~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,535 WARN L322 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork0_#t~nondet8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,535 WARN L322 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork0_~x~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,535 WARN L322 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork0_#t~nondet8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,535 WARN L322 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork0_#t~nondet8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,536 WARN L322 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork0_#t~nondet9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,536 WARN L322 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork0_#t~nondet9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,536 WARN L322 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork0_#t~nondet9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,537 WARN L322 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork0_~y~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,537 WARN L322 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork0_#t~nondet9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,537 WARN L322 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork0_~y~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,537 WARN L322 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork0_#t~nondet9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,537 WARN L322 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork0_#t~nondet9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,537 WARN L322 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork0_#t~nondet10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,538 WARN L322 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork0_#t~nondet10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,538 WARN L322 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork0_#t~nondet10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,538 WARN L322 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork0_#t~nondet10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,538 WARN L322 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork0_#t~nondet11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,539 WARN L322 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork0_#t~nondet11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,539 WARN L322 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork0_#t~nondet11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,539 WARN L322 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork0_#t~nondet11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,539 WARN L322 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork0_~x~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,539 WARN L322 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork0_~x~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,539 WARN L322 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork0_~y~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,540 WARN L322 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork0_~y~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,540 WARN L322 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork0_~x~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,540 WARN L322 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork0_~y~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,540 WARN L322 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,540 WARN L322 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork0_~x~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,541 WARN L322 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork0_~y~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,541 WARN L322 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,541 WARN L322 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,541 WARN L322 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,541 WARN L322 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,541 WARN L322 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,542 WARN L322 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,542 WARN L322 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,542 WARN L322 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,542 WARN L322 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,542 WARN L322 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,543 WARN L322 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,543 WARN L322 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,543 WARN L322 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,543 WARN L322 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,543 WARN L322 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,544 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,544 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,544 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,544 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,544 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,544 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,545 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,545 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,545 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork1_#t~nondet1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,545 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork1_#t~nondet1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,546 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork1_#t~nondet1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,546 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork1_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,546 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork1_#t~nondet1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,546 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork1_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,546 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork1_#t~nondet1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,547 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork1_#t~nondet1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,547 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork1_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,547 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork1_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,547 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork1_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,548 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork1_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,548 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork1_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,548 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork1_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,548 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,549 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,549 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,549 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,549 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork1_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,549 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork1_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,549 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork1_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,550 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork1_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,550 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork1_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,550 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork1_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,550 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork1_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,550 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork1_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,550 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork1_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,551 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork1_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,551 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork1_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,551 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork1_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,551 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork1_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,552 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork1_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,552 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork1_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,552 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork1_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,555 WARN L322 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork0_#t~nondet11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,555 WARN L322 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,555 WARN L322 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork0_#t~nondet8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,555 WARN L322 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,555 WARN L322 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork0_~x~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,556 WARN L322 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork0_#t~nondet10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,556 WARN L322 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,556 WARN L322 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork0_#t~nondet9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,556 WARN L322 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,556 WARN L322 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,556 WARN L322 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,557 WARN L322 ript$VariableManager]: TermVariabe |t3_funThread1of1ForFork0_~y~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,559 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork1_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,559 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork1_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,559 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,559 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,559 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,559 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork1_#t~nondet1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,560 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork1_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,560 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork1_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,560 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,560 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,561 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork2___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,561 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork2_#t~nondet6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,561 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork2_#t~nondet7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,561 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork2_~x~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,561 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork2_#t~nondet5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,561 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,562 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork2_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,562 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork2___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,562 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork2_~y~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,562 WARN L322 ript$VariableManager]: TermVariabe |t2_funThread1of1ForFork2_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:14:21,562 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-12-21 15:14:21,602 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 15:14:21,616 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 15:14:21,616 INFO L340 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2021-12-21 15:14:21,629 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 172 places, 167 transitions, 349 flow [2021-12-21 15:14:21,709 INFO L129 PetriNetUnfolder]: 5/164 cut-off events. [2021-12-21 15:14:21,709 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-12-21 15:14:21,714 INFO L84 FinitePrefix]: Finished finitePrefix Result has 174 conditions, 164 events. 5/164 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 252 event pairs, 0 based on Foata normal form. 0/155 useless extension candidates. Maximal degree in co-relation 127. Up to 2 conditions per place. [2021-12-21 15:14:21,715 INFO L82 GeneralOperation]: Start removeDead. Operand has 172 places, 167 transitions, 349 flow [2021-12-21 15:14:21,721 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 169 places, 164 transitions, 337 flow [2021-12-21 15:14:21,747 INFO L129 PetriNetUnfolder]: 2/116 cut-off events. [2021-12-21 15:14:21,748 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-12-21 15:14:21,748 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:14:21,748 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] [2021-12-21 15:14:21,749 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-12-21 15:14:21,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:14:21,753 INFO L85 PathProgramCache]: Analyzing trace with hash -1404558984, now seen corresponding path program 1 times [2021-12-21 15:14:21,759 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:14:21,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641834596] [2021-12-21 15:14:21,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:14:21,761 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:14:21,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:14:22,010 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 15:14:22,011 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:14:22,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641834596] [2021-12-21 15:14:22,012 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641834596] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:14:22,012 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:14:22,014 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-21 15:14:22,015 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121991820] [2021-12-21 15:14:22,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:14:22,022 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-21 15:14:22,022 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:14:22,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-21 15:14:22,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-21 15:14:22,062 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 167 [2021-12-21 15:14:22,070 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 164 transitions, 337 flow. Second operand has 8 states, 8 states have (on average 139.5) internal successors, (1116), 8 states have internal predecessors, (1116), 0 states have call successors, (0), 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 15:14:22,071 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 15:14:22,071 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 167 [2021-12-21 15:14:22,072 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 15:14:22,705 INFO L129 PetriNetUnfolder]: 1049/3536 cut-off events. [2021-12-21 15:14:22,706 INFO L130 PetriNetUnfolder]: For 60/60 co-relation queries the response was YES. [2021-12-21 15:14:22,721 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5266 conditions, 3536 events. 1049/3536 cut-off events. For 60/60 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 33236 event pairs, 294 based on Foata normal form. 502/3865 useless extension candidates. Maximal degree in co-relation 5215. Up to 818 conditions per place. [2021-12-21 15:14:22,754 INFO L132 encePairwiseOnDemand]: 153/167 looper letters, 96 selfloop transitions, 21 changer transitions 0/252 dead transitions. [2021-12-21 15:14:22,755 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 252 transitions, 789 flow [2021-12-21 15:14:22,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-21 15:14:22,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-12-21 15:14:22,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2371 transitions. [2021-12-21 15:14:22,771 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8873502994011976 [2021-12-21 15:14:22,771 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2371 transitions. [2021-12-21 15:14:22,772 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2371 transitions. [2021-12-21 15:14:22,775 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 15:14:22,777 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2371 transitions. [2021-12-21 15:14:22,783 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 148.1875) internal successors, (2371), 16 states have internal predecessors, (2371), 0 states have call successors, (0), 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 15:14:22,792 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 167.0) internal successors, (2839), 17 states have internal predecessors, (2839), 0 states have call successors, (0), 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 15:14:22,794 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 167.0) internal successors, (2839), 17 states have internal predecessors, (2839), 0 states have call successors, (0), 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 15:14:22,795 INFO L186 Difference]: Start difference. First operand has 169 places, 164 transitions, 337 flow. Second operand 16 states and 2371 transitions. [2021-12-21 15:14:22,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 252 transitions, 789 flow [2021-12-21 15:14:22,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 252 transitions, 772 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-12-21 15:14:22,805 INFO L242 Difference]: Finished difference. Result has 182 places, 175 transitions, 432 flow [2021-12-21 15:14:22,807 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=318, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=432, PETRI_PLACES=182, PETRI_TRANSITIONS=175} [2021-12-21 15:14:22,810 INFO L334 CegarLoopForPetriNet]: 169 programPoint places, 13 predicate places. [2021-12-21 15:14:22,810 INFO L470 AbstractCegarLoop]: Abstraction has has 182 places, 175 transitions, 432 flow [2021-12-21 15:14:22,811 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 139.5) internal successors, (1116), 8 states have internal predecessors, (1116), 0 states have call successors, (0), 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 15:14:22,811 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:14:22,811 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] [2021-12-21 15:14:22,812 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-21 15:14:22,812 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-12-21 15:14:22,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:14:22,812 INFO L85 PathProgramCache]: Analyzing trace with hash 1253064817, now seen corresponding path program 1 times [2021-12-21 15:14:22,813 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:14:22,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760351976] [2021-12-21 15:14:22,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:14:22,813 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:14:22,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:14:22,997 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 15:14:22,998 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:14:22,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760351976] [2021-12-21 15:14:22,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760351976] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:14:22,998 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:14:22,998 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-21 15:14:22,998 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005635327] [2021-12-21 15:14:22,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:14:22,999 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-21 15:14:23,000 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:14:23,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-21 15:14:23,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-21 15:14:23,003 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 167 [2021-12-21 15:14:23,004 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 175 transitions, 432 flow. Second operand has 8 states, 8 states have (on average 133.75) internal successors, (1070), 8 states have internal predecessors, (1070), 0 states have call successors, (0), 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 15:14:23,004 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 15:14:23,004 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 167 [2021-12-21 15:14:23,004 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 15:14:24,296 INFO L129 PetriNetUnfolder]: 2863/8295 cut-off events. [2021-12-21 15:14:24,297 INFO L130 PetriNetUnfolder]: For 1788/1788 co-relation queries the response was YES. [2021-12-21 15:14:24,330 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14905 conditions, 8295 events. 2863/8295 cut-off events. For 1788/1788 co-relation queries the response was YES. Maximal size of possible extension queue 524. Compared 87931 event pairs, 594 based on Foata normal form. 0/7960 useless extension candidates. Maximal degree in co-relation 14846. Up to 1801 conditions per place. [2021-12-21 15:14:24,373 INFO L132 encePairwiseOnDemand]: 153/167 looper letters, 108 selfloop transitions, 69 changer transitions 0/313 dead transitions. [2021-12-21 15:14:24,373 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 313 transitions, 1259 flow [2021-12-21 15:14:24,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-21 15:14:24,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-12-21 15:14:24,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2239 transitions. [2021-12-21 15:14:24,378 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8379491017964071 [2021-12-21 15:14:24,378 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2239 transitions. [2021-12-21 15:14:24,378 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2239 transitions. [2021-12-21 15:14:24,379 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 15:14:24,379 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2239 transitions. [2021-12-21 15:14:24,383 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 139.9375) internal successors, (2239), 16 states have internal predecessors, (2239), 0 states have call successors, (0), 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 15:14:24,387 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 167.0) internal successors, (2839), 17 states have internal predecessors, (2839), 0 states have call successors, (0), 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 15:14:24,389 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 167.0) internal successors, (2839), 17 states have internal predecessors, (2839), 0 states have call successors, (0), 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 15:14:24,390 INFO L186 Difference]: Start difference. First operand has 182 places, 175 transitions, 432 flow. Second operand 16 states and 2239 transitions. [2021-12-21 15:14:24,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 313 transitions, 1259 flow [2021-12-21 15:14:24,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 313 transitions, 1257 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-12-21 15:14:24,412 INFO L242 Difference]: Finished difference. Result has 201 places, 242 transitions, 936 flow [2021-12-21 15:14:24,412 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=430, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=936, PETRI_PLACES=201, PETRI_TRANSITIONS=242} [2021-12-21 15:14:24,413 INFO L334 CegarLoopForPetriNet]: 169 programPoint places, 32 predicate places. [2021-12-21 15:14:24,413 INFO L470 AbstractCegarLoop]: Abstraction has has 201 places, 242 transitions, 936 flow [2021-12-21 15:14:24,413 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 133.75) internal successors, (1070), 8 states have internal predecessors, (1070), 0 states have call successors, (0), 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 15:14:24,414 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:14:24,414 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] [2021-12-21 15:14:24,414 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-21 15:14:24,414 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-12-21 15:14:24,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:14:24,416 INFO L85 PathProgramCache]: Analyzing trace with hash 1700488748, now seen corresponding path program 1 times [2021-12-21 15:14:24,416 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:14:24,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652755812] [2021-12-21 15:14:24,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:14:24,417 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:14:24,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:14:24,551 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 15:14:24,551 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:14:24,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652755812] [2021-12-21 15:14:24,552 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652755812] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:14:24,552 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:14:24,552 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-21 15:14:24,552 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882677431] [2021-12-21 15:14:24,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:14:24,553 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-21 15:14:24,553 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:14:24,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-21 15:14:24,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-21 15:14:24,554 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 167 [2021-12-21 15:14:24,555 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 242 transitions, 936 flow. Second operand has 8 states, 8 states have (on average 139.625) internal successors, (1117), 8 states have internal predecessors, (1117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:14:24,555 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 15:14:24,555 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 167 [2021-12-21 15:14:24,556 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 15:14:27,120 INFO L129 PetriNetUnfolder]: 5807/22295 cut-off events. [2021-12-21 15:14:27,121 INFO L130 PetriNetUnfolder]: For 13220/13441 co-relation queries the response was YES. [2021-12-21 15:14:27,223 INFO L84 FinitePrefix]: Finished finitePrefix Result has 43673 conditions, 22295 events. 5807/22295 cut-off events. For 13220/13441 co-relation queries the response was YES. Maximal size of possible extension queue 1250. Compared 304132 event pairs, 1667 based on Foata normal form. 0/20986 useless extension candidates. Maximal degree in co-relation 43610. Up to 4845 conditions per place. [2021-12-21 15:14:27,298 INFO L132 encePairwiseOnDemand]: 157/167 looper letters, 166 selfloop transitions, 227 changer transitions 54/603 dead transitions. [2021-12-21 15:14:27,298 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 603 transitions, 4140 flow [2021-12-21 15:14:27,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-21 15:14:27,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-12-21 15:14:27,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2316 transitions. [2021-12-21 15:14:27,302 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8667664670658682 [2021-12-21 15:14:27,302 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2316 transitions. [2021-12-21 15:14:27,302 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2316 transitions. [2021-12-21 15:14:27,303 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 15:14:27,303 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2316 transitions. [2021-12-21 15:14:27,306 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 144.75) internal successors, (2316), 16 states have internal predecessors, (2316), 0 states have call successors, (0), 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 15:14:27,309 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 167.0) internal successors, (2839), 17 states have internal predecessors, (2839), 0 states have call successors, (0), 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 15:14:27,310 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 167.0) internal successors, (2839), 17 states have internal predecessors, (2839), 0 states have call successors, (0), 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 15:14:27,310 INFO L186 Difference]: Start difference. First operand has 201 places, 242 transitions, 936 flow. Second operand 16 states and 2316 transitions. [2021-12-21 15:14:27,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 603 transitions, 4140 flow [2021-12-21 15:14:27,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 603 transitions, 4138 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-12-21 15:14:27,611 INFO L242 Difference]: Finished difference. Result has 223 places, 469 transitions, 3493 flow [2021-12-21 15:14:27,611 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=934, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=3493, PETRI_PLACES=223, PETRI_TRANSITIONS=469} [2021-12-21 15:14:27,612 INFO L334 CegarLoopForPetriNet]: 169 programPoint places, 54 predicate places. [2021-12-21 15:14:27,612 INFO L470 AbstractCegarLoop]: Abstraction has has 223 places, 469 transitions, 3493 flow [2021-12-21 15:14:27,620 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 139.625) internal successors, (1117), 8 states have internal predecessors, (1117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:14:27,620 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:14:27,620 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] [2021-12-21 15:14:27,620 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-21 15:14:27,621 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-12-21 15:14:27,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:14:27,621 INFO L85 PathProgramCache]: Analyzing trace with hash -685021039, now seen corresponding path program 1 times [2021-12-21 15:14:27,621 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:14:27,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468477176] [2021-12-21 15:14:27,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:14:27,622 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:14:27,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:14:27,662 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 15:14:27,662 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:14:27,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468477176] [2021-12-21 15:14:27,663 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468477176] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:14:27,663 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:14:27,663 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 15:14:27,663 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456687876] [2021-12-21 15:14:27,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:14:27,664 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 15:14:27,664 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:14:27,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 15:14:27,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 15:14:27,665 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 167 [2021-12-21 15:14:27,665 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 469 transitions, 3493 flow. Second operand has 3 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 0 states have call successors, (0), 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 15:14:27,665 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 15:14:27,665 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 167 [2021-12-21 15:14:27,665 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 15:14:30,853 INFO L129 PetriNetUnfolder]: 4456/24930 cut-off events. [2021-12-21 15:14:30,853 INFO L130 PetriNetUnfolder]: For 7900/7904 co-relation queries the response was YES. [2021-12-21 15:14:31,071 INFO L84 FinitePrefix]: Finished finitePrefix Result has 44625 conditions, 24930 events. 4456/24930 cut-off events. For 7900/7904 co-relation queries the response was YES. Maximal size of possible extension queue 1004. Compared 366999 event pairs, 1362 based on Foata normal form. 700/25224 useless extension candidates. Maximal degree in co-relation 44548. Up to 5167 conditions per place. [2021-12-21 15:14:31,154 INFO L132 encePairwiseOnDemand]: 154/167 looper letters, 25 selfloop transitions, 13 changer transitions 0/362 dead transitions. [2021-12-21 15:14:31,154 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 362 transitions, 2389 flow [2021-12-21 15:14:31,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 15:14:31,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-21 15:14:31,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 445 transitions. [2021-12-21 15:14:31,156 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8882235528942116 [2021-12-21 15:14:31,156 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 445 transitions. [2021-12-21 15:14:31,156 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 445 transitions. [2021-12-21 15:14:31,157 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 15:14:31,157 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 445 transitions. [2021-12-21 15:14:31,158 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 148.33333333333334) internal successors, (445), 3 states have internal predecessors, (445), 0 states have call successors, (0), 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 15:14:31,158 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 167.0) internal successors, (668), 4 states have internal predecessors, (668), 0 states have call successors, (0), 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 15:14:31,159 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 167.0) internal successors, (668), 4 states have internal predecessors, (668), 0 states have call successors, (0), 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 15:14:31,159 INFO L186 Difference]: Start difference. First operand has 223 places, 469 transitions, 3493 flow. Second operand 3 states and 445 transitions. [2021-12-21 15:14:31,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 362 transitions, 2389 flow [2021-12-21 15:14:31,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 362 transitions, 2387 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-12-21 15:14:31,510 INFO L242 Difference]: Finished difference. Result has 225 places, 357 transitions, 2352 flow [2021-12-21 15:14:31,510 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=2281, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=349, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2352, PETRI_PLACES=225, PETRI_TRANSITIONS=357} [2021-12-21 15:14:31,511 INFO L334 CegarLoopForPetriNet]: 169 programPoint places, 56 predicate places. [2021-12-21 15:14:31,511 INFO L470 AbstractCegarLoop]: Abstraction has has 225 places, 357 transitions, 2352 flow [2021-12-21 15:14:31,512 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 0 states have call successors, (0), 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 15:14:31,512 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:14:31,512 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] [2021-12-21 15:14:31,512 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-21 15:14:31,512 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-12-21 15:14:31,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:14:31,513 INFO L85 PathProgramCache]: Analyzing trace with hash -1913673872, now seen corresponding path program 1 times [2021-12-21 15:14:31,513 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:14:31,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961275468] [2021-12-21 15:14:31,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:14:31,513 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:14:31,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:14:31,568 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 15:14:31,568 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:14:31,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961275468] [2021-12-21 15:14:31,569 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961275468] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:14:31,569 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:14:31,569 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-21 15:14:31,569 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196286240] [2021-12-21 15:14:31,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:14:31,570 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-21 15:14:31,570 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:14:31,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-21 15:14:31,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-21 15:14:31,571 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 167 [2021-12-21 15:14:31,572 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 357 transitions, 2352 flow. Second operand has 8 states, 8 states have (on average 137.0) internal successors, (1096), 8 states have internal predecessors, (1096), 0 states have call successors, (0), 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 15:14:31,572 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 15:14:31,572 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 167 [2021-12-21 15:14:31,572 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 15:14:37,715 INFO L129 PetriNetUnfolder]: 11813/53518 cut-off events. [2021-12-21 15:14:37,716 INFO L130 PetriNetUnfolder]: For 26379/27529 co-relation queries the response was YES. [2021-12-21 15:14:38,071 INFO L84 FinitePrefix]: Finished finitePrefix Result has 109902 conditions, 53518 events. 11813/53518 cut-off events. For 26379/27529 co-relation queries the response was YES. Maximal size of possible extension queue 2045. Compared 839201 event pairs, 3257 based on Foata normal form. 438/52429 useless extension candidates. Maximal degree in co-relation 109828. Up to 8791 conditions per place. [2021-12-21 15:14:38,263 INFO L132 encePairwiseOnDemand]: 158/167 looper letters, 114 selfloop transitions, 200 changer transitions 0/475 dead transitions. [2021-12-21 15:14:38,264 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 475 transitions, 3645 flow [2021-12-21 15:14:38,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-21 15:14:38,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2021-12-21 15:14:38,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2014 transitions. [2021-12-21 15:14:38,272 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8614200171086399 [2021-12-21 15:14:38,272 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2014 transitions. [2021-12-21 15:14:38,272 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2014 transitions. [2021-12-21 15:14:38,274 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 15:14:38,274 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2014 transitions. [2021-12-21 15:14:38,280 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 143.85714285714286) internal successors, (2014), 14 states have internal predecessors, (2014), 0 states have call successors, (0), 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 15:14:38,285 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 167.0) internal successors, (2505), 15 states have internal predecessors, (2505), 0 states have call successors, (0), 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 15:14:38,285 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 167.0) internal successors, (2505), 15 states have internal predecessors, (2505), 0 states have call successors, (0), 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 15:14:38,286 INFO L186 Difference]: Start difference. First operand has 225 places, 357 transitions, 2352 flow. Second operand 14 states and 2014 transitions. [2021-12-21 15:14:38,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 475 transitions, 3645 flow [2021-12-21 15:14:39,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 475 transitions, 3632 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-12-21 15:14:39,555 INFO L242 Difference]: Finished difference. Result has 246 places, 397 transitions, 3370 flow [2021-12-21 15:14:39,555 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=2339, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=357, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=160, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=3370, PETRI_PLACES=246, PETRI_TRANSITIONS=397} [2021-12-21 15:14:39,556 INFO L334 CegarLoopForPetriNet]: 169 programPoint places, 77 predicate places. [2021-12-21 15:14:39,556 INFO L470 AbstractCegarLoop]: Abstraction has has 246 places, 397 transitions, 3370 flow [2021-12-21 15:14:39,556 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 137.0) internal successors, (1096), 8 states have internal predecessors, (1096), 0 states have call successors, (0), 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 15:14:39,556 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:14:39,557 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] [2021-12-21 15:14:39,557 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-21 15:14:39,557 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-12-21 15:14:39,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:14:39,557 INFO L85 PathProgramCache]: Analyzing trace with hash -1552092039, now seen corresponding path program 1 times [2021-12-21 15:14:39,557 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:14:39,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250906010] [2021-12-21 15:14:39,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:14:39,558 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:14:39,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:14:39,670 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 15:14:39,671 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:14:39,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250906010] [2021-12-21 15:14:39,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250906010] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:14:39,671 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:14:39,671 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 15:14:39,671 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807756346] [2021-12-21 15:14:39,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:14:39,672 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 15:14:39,672 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:14:39,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 15:14:39,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-21 15:14:39,673 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 167 [2021-12-21 15:14:39,674 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 397 transitions, 3370 flow. Second operand has 6 states, 6 states have (on average 131.33333333333334) internal successors, (788), 6 states have internal predecessors, (788), 0 states have call successors, (0), 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 15:14:39,674 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 15:14:39,674 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 167 [2021-12-21 15:14:39,674 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 15:14:40,942 INFO L129 PetriNetUnfolder]: 1834/12191 cut-off events. [2021-12-21 15:14:40,942 INFO L130 PetriNetUnfolder]: For 12085/12545 co-relation queries the response was YES. [2021-12-21 15:14:41,010 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28808 conditions, 12191 events. 1834/12191 cut-off events. For 12085/12545 co-relation queries the response was YES. Maximal size of possible extension queue 465. Compared 162086 event pairs, 123 based on Foata normal form. 589/12711 useless extension candidates. Maximal degree in co-relation 28715. Up to 2024 conditions per place. [2021-12-21 15:14:41,038 INFO L132 encePairwiseOnDemand]: 159/167 looper letters, 36 selfloop transitions, 11 changer transitions 0/360 dead transitions. [2021-12-21 15:14:41,038 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 360 transitions, 2899 flow [2021-12-21 15:14:41,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 15:14:41,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-12-21 15:14:41,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 680 transitions. [2021-12-21 15:14:41,040 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8143712574850299 [2021-12-21 15:14:41,040 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 680 transitions. [2021-12-21 15:14:41,040 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 680 transitions. [2021-12-21 15:14:41,041 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 15:14:41,041 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 680 transitions. [2021-12-21 15:14:41,042 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 136.0) internal successors, (680), 5 states have internal predecessors, (680), 0 states have call successors, (0), 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 15:14:41,043 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 167.0) internal successors, (1002), 6 states have internal predecessors, (1002), 0 states have call successors, (0), 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 15:14:41,043 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 167.0) internal successors, (1002), 6 states have internal predecessors, (1002), 0 states have call successors, (0), 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 15:14:41,043 INFO L186 Difference]: Start difference. First operand has 246 places, 397 transitions, 3370 flow. Second operand 5 states and 680 transitions. [2021-12-21 15:14:41,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 360 transitions, 2899 flow [2021-12-21 15:14:41,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 360 transitions, 2869 flow, removed 15 selfloop flow, removed 1 redundant places. [2021-12-21 15:14:41,193 INFO L242 Difference]: Finished difference. Result has 248 places, 352 transitions, 2765 flow [2021-12-21 15:14:41,193 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=2743, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=341, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2765, PETRI_PLACES=248, PETRI_TRANSITIONS=352} [2021-12-21 15:14:41,194 INFO L334 CegarLoopForPetriNet]: 169 programPoint places, 79 predicate places. [2021-12-21 15:14:41,194 INFO L470 AbstractCegarLoop]: Abstraction has has 248 places, 352 transitions, 2765 flow [2021-12-21 15:14:41,195 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 131.33333333333334) internal successors, (788), 6 states have internal predecessors, (788), 0 states have call successors, (0), 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 15:14:41,195 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:14:41,195 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] [2021-12-21 15:14:41,195 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-21 15:14:41,195 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-12-21 15:14:41,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:14:41,196 INFO L85 PathProgramCache]: Analyzing trace with hash -1716014188, now seen corresponding path program 1 times [2021-12-21 15:14:41,196 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:14:41,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662675698] [2021-12-21 15:14:41,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:14:41,196 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:14:41,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:14:41,381 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 15:14:41,381 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:14:41,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662675698] [2021-12-21 15:14:41,381 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662675698] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:14:41,382 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:14:41,382 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-21 15:14:41,385 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309441847] [2021-12-21 15:14:41,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:14:41,386 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-21 15:14:41,386 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:14:41,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-21 15:14:41,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-21 15:14:41,387 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 167 [2021-12-21 15:14:41,388 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 352 transitions, 2765 flow. Second operand has 8 states, 8 states have (on average 137.125) internal successors, (1097), 8 states have internal predecessors, (1097), 0 states have call successors, (0), 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 15:14:41,388 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 15:14:41,388 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 167 [2021-12-21 15:14:41,388 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 15:14:44,520 INFO L129 PetriNetUnfolder]: 5617/25679 cut-off events. [2021-12-21 15:14:44,521 INFO L130 PetriNetUnfolder]: For 28418/29034 co-relation queries the response was YES. [2021-12-21 15:14:44,648 INFO L84 FinitePrefix]: Finished finitePrefix Result has 61076 conditions, 25679 events. 5617/25679 cut-off events. For 28418/29034 co-relation queries the response was YES. Maximal size of possible extension queue 946. Compared 354853 event pairs, 1879 based on Foata normal form. 313/25299 useless extension candidates. Maximal degree in co-relation 60991. Up to 3253 conditions per place. [2021-12-21 15:14:44,703 INFO L132 encePairwiseOnDemand]: 158/167 looper letters, 109 selfloop transitions, 162 changer transitions 0/430 dead transitions. [2021-12-21 15:14:44,703 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 430 transitions, 3645 flow [2021-12-21 15:14:44,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-21 15:14:44,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2021-12-21 15:14:44,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2009 transitions. [2021-12-21 15:14:44,707 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8592814371257484 [2021-12-21 15:14:44,707 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2009 transitions. [2021-12-21 15:14:44,707 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2009 transitions. [2021-12-21 15:14:44,708 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 15:14:44,708 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2009 transitions. [2021-12-21 15:14:44,711 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 143.5) internal successors, (2009), 14 states have internal predecessors, (2009), 0 states have call successors, (0), 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 15:14:44,714 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 167.0) internal successors, (2505), 15 states have internal predecessors, (2505), 0 states have call successors, (0), 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 15:14:44,715 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 167.0) internal successors, (2505), 15 states have internal predecessors, (2505), 0 states have call successors, (0), 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 15:14:44,715 INFO L186 Difference]: Start difference. First operand has 248 places, 352 transitions, 2765 flow. Second operand 14 states and 2009 transitions. [2021-12-21 15:14:44,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 430 transitions, 3645 flow [2021-12-21 15:14:45,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 430 transitions, 3633 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-12-21 15:14:45,094 INFO L242 Difference]: Finished difference. Result has 263 places, 359 transitions, 3221 flow [2021-12-21 15:14:45,095 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=2753, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=156, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=3221, PETRI_PLACES=263, PETRI_TRANSITIONS=359} [2021-12-21 15:14:45,095 INFO L334 CegarLoopForPetriNet]: 169 programPoint places, 94 predicate places. [2021-12-21 15:14:45,095 INFO L470 AbstractCegarLoop]: Abstraction has has 263 places, 359 transitions, 3221 flow [2021-12-21 15:14:45,096 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 137.125) internal successors, (1097), 8 states have internal predecessors, (1097), 0 states have call successors, (0), 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 15:14:45,096 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:14:45,096 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] [2021-12-21 15:14:45,096 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-21 15:14:45,096 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-12-21 15:14:45,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:14:45,097 INFO L85 PathProgramCache]: Analyzing trace with hash -37311811, now seen corresponding path program 1 times [2021-12-21 15:14:45,097 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:14:45,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104680344] [2021-12-21 15:14:45,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:14:45,097 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:14:45,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:14:45,160 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 15:14:45,160 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:14:45,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104680344] [2021-12-21 15:14:45,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104680344] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:14:45,160 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:14:45,161 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-21 15:14:45,161 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654478338] [2021-12-21 15:14:45,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:14:45,161 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-21 15:14:45,161 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:14:45,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-21 15:14:45,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-21 15:14:45,162 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 167 [2021-12-21 15:14:45,163 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 359 transitions, 3221 flow. Second operand has 8 states, 8 states have (on average 131.375) internal successors, (1051), 8 states have internal predecessors, (1051), 0 states have call successors, (0), 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 15:14:45,163 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 15:14:45,163 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 167 [2021-12-21 15:14:45,163 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 15:14:48,679 INFO L129 PetriNetUnfolder]: 5973/26715 cut-off events. [2021-12-21 15:14:48,679 INFO L130 PetriNetUnfolder]: For 40146/41552 co-relation queries the response was YES. [2021-12-21 15:14:48,846 INFO L84 FinitePrefix]: Finished finitePrefix Result has 65779 conditions, 26715 events. 5973/26715 cut-off events. For 40146/41552 co-relation queries the response was YES. Maximal size of possible extension queue 885. Compared 371967 event pairs, 1548 based on Foata normal form. 407/26253 useless extension candidates. Maximal degree in co-relation 65687. Up to 3440 conditions per place. [2021-12-21 15:14:48,905 INFO L132 encePairwiseOnDemand]: 155/167 looper letters, 185 selfloop transitions, 106 changer transitions 2/454 dead transitions. [2021-12-21 15:14:48,905 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 454 transitions, 4697 flow [2021-12-21 15:14:48,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-21 15:14:48,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-12-21 15:14:48,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1518 transitions. [2021-12-21 15:14:48,908 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8263473053892215 [2021-12-21 15:14:48,908 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1518 transitions. [2021-12-21 15:14:48,908 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1518 transitions. [2021-12-21 15:14:48,908 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 15:14:48,909 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1518 transitions. [2021-12-21 15:14:48,911 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 138.0) internal successors, (1518), 11 states have internal predecessors, (1518), 0 states have call successors, (0), 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 15:14:48,913 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 167.0) internal successors, (2004), 12 states have internal predecessors, (2004), 0 states have call successors, (0), 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 15:14:48,913 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 167.0) internal successors, (2004), 12 states have internal predecessors, (2004), 0 states have call successors, (0), 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 15:14:48,913 INFO L186 Difference]: Start difference. First operand has 263 places, 359 transitions, 3221 flow. Second operand 11 states and 1518 transitions. [2021-12-21 15:14:48,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 454 transitions, 4697 flow [2021-12-21 15:14:49,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 454 transitions, 4343 flow, removed 27 selfloop flow, removed 7 redundant places. [2021-12-21 15:14:49,576 INFO L242 Difference]: Finished difference. Result has 271 places, 387 transitions, 3455 flow [2021-12-21 15:14:49,576 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=2951, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=359, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3455, PETRI_PLACES=271, PETRI_TRANSITIONS=387} [2021-12-21 15:14:49,577 INFO L334 CegarLoopForPetriNet]: 169 programPoint places, 102 predicate places. [2021-12-21 15:14:49,577 INFO L470 AbstractCegarLoop]: Abstraction has has 271 places, 387 transitions, 3455 flow [2021-12-21 15:14:49,577 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 131.375) internal successors, (1051), 8 states have internal predecessors, (1051), 0 states have call successors, (0), 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 15:14:49,578 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:14:49,578 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] [2021-12-21 15:14:49,578 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-21 15:14:49,578 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-12-21 15:14:49,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:14:49,578 INFO L85 PathProgramCache]: Analyzing trace with hash -1741595232, now seen corresponding path program 1 times [2021-12-21 15:14:49,578 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:14:49,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798774752] [2021-12-21 15:14:49,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:14:49,579 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:14:49,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:14:49,643 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 15:14:49,643 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:14:49,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798774752] [2021-12-21 15:14:49,643 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798774752] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:14:49,643 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:14:49,643 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-21 15:14:49,643 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415465294] [2021-12-21 15:14:49,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:14:49,644 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-21 15:14:49,644 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:14:49,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-21 15:14:49,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-21 15:14:49,645 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 167 [2021-12-21 15:14:49,646 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 387 transitions, 3455 flow. Second operand has 8 states, 8 states have (on average 137.25) internal successors, (1098), 8 states have internal predecessors, (1098), 0 states have call successors, (0), 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 15:14:49,646 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 15:14:49,646 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 167 [2021-12-21 15:14:49,646 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 15:14:54,057 INFO L129 PetriNetUnfolder]: 8027/34769 cut-off events. [2021-12-21 15:14:54,057 INFO L130 PetriNetUnfolder]: For 63435/65307 co-relation queries the response was YES. [2021-12-21 15:14:54,287 INFO L84 FinitePrefix]: Finished finitePrefix Result has 88971 conditions, 34769 events. 8027/34769 cut-off events. For 63435/65307 co-relation queries the response was YES. Maximal size of possible extension queue 1314. Compared 499475 event pairs, 1677 based on Foata normal form. 399/34293 useless extension candidates. Maximal degree in co-relation 88878. Up to 4548 conditions per place. [2021-12-21 15:14:54,344 INFO L132 encePairwiseOnDemand]: 159/167 looper letters, 160 selfloop transitions, 107 changer transitions 42/490 dead transitions. [2021-12-21 15:14:54,345 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 490 transitions, 5091 flow [2021-12-21 15:14:54,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-21 15:14:54,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-12-21 15:14:54,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1573 transitions. [2021-12-21 15:14:54,347 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8562874251497006 [2021-12-21 15:14:54,347 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1573 transitions. [2021-12-21 15:14:54,348 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1573 transitions. [2021-12-21 15:14:54,348 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 15:14:54,348 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1573 transitions. [2021-12-21 15:14:54,350 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 143.0) internal successors, (1573), 11 states have internal predecessors, (1573), 0 states have call successors, (0), 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 15:14:54,352 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 167.0) internal successors, (2004), 12 states have internal predecessors, (2004), 0 states have call successors, (0), 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 15:14:54,353 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 167.0) internal successors, (2004), 12 states have internal predecessors, (2004), 0 states have call successors, (0), 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 15:14:54,353 INFO L186 Difference]: Start difference. First operand has 271 places, 387 transitions, 3455 flow. Second operand 11 states and 1573 transitions. [2021-12-21 15:14:54,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 490 transitions, 5091 flow [2021-12-21 15:14:55,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 490 transitions, 4988 flow, removed 15 selfloop flow, removed 2 redundant places. [2021-12-21 15:14:55,256 INFO L242 Difference]: Finished difference. Result has 277 places, 386 transitions, 3495 flow [2021-12-21 15:14:55,257 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=3398, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=385, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=309, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3495, PETRI_PLACES=277, PETRI_TRANSITIONS=386} [2021-12-21 15:14:55,257 INFO L334 CegarLoopForPetriNet]: 169 programPoint places, 108 predicate places. [2021-12-21 15:14:55,257 INFO L470 AbstractCegarLoop]: Abstraction has has 277 places, 386 transitions, 3495 flow [2021-12-21 15:14:55,258 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 137.25) internal successors, (1098), 8 states have internal predecessors, (1098), 0 states have call successors, (0), 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 15:14:55,258 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:14:55,258 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] [2021-12-21 15:14:55,258 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-21 15:14:55,258 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-12-21 15:14:55,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:14:55,259 INFO L85 PathProgramCache]: Analyzing trace with hash 1294409337, now seen corresponding path program 1 times [2021-12-21 15:14:55,259 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:14:55,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055213278] [2021-12-21 15:14:55,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:14:55,259 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:14:55,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:14:55,316 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 15:14:55,317 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:14:55,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055213278] [2021-12-21 15:14:55,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055213278] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:14:55,317 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:14:55,317 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 15:14:55,317 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356033343] [2021-12-21 15:14:55,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:14:55,318 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 15:14:55,318 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:14:55,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 15:14:55,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-21 15:14:55,319 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 167 [2021-12-21 15:14:55,319 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 386 transitions, 3495 flow. Second operand has 6 states, 6 states have (on average 131.83333333333334) internal successors, (791), 6 states have internal predecessors, (791), 0 states have call successors, (0), 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 15:14:55,319 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 15:14:55,320 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 167 [2021-12-21 15:14:55,320 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 15:14:55,998 INFO L129 PetriNetUnfolder]: 360/4518 cut-off events. [2021-12-21 15:14:55,998 INFO L130 PetriNetUnfolder]: For 5298/5410 co-relation queries the response was YES. [2021-12-21 15:14:56,028 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11083 conditions, 4518 events. 360/4518 cut-off events. For 5298/5410 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 51409 event pairs, 43 based on Foata normal form. 41/4551 useless extension candidates. Maximal degree in co-relation 10981. Up to 629 conditions per place. [2021-12-21 15:14:56,031 INFO L132 encePairwiseOnDemand]: 155/167 looper letters, 0 selfloop transitions, 0 changer transitions 276/276 dead transitions. [2021-12-21 15:14:56,031 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 276 transitions, 2051 flow [2021-12-21 15:14:56,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 15:14:56,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-12-21 15:14:56,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 681 transitions. [2021-12-21 15:14:56,032 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8155688622754491 [2021-12-21 15:14:56,032 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 681 transitions. [2021-12-21 15:14:56,033 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 681 transitions. [2021-12-21 15:14:56,033 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 15:14:56,033 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 681 transitions. [2021-12-21 15:14:56,034 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 136.2) internal successors, (681), 5 states have internal predecessors, (681), 0 states have call successors, (0), 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 15:14:56,036 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 167.0) internal successors, (1002), 6 states have internal predecessors, (1002), 0 states have call successors, (0), 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 15:14:56,045 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 167.0) internal successors, (1002), 6 states have internal predecessors, (1002), 0 states have call successors, (0), 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 15:14:56,045 INFO L186 Difference]: Start difference. First operand has 277 places, 386 transitions, 3495 flow. Second operand 5 states and 681 transitions. [2021-12-21 15:14:56,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 276 transitions, 2051 flow [2021-12-21 15:14:56,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 276 transitions, 1761 flow, removed 26 selfloop flow, removed 25 redundant places. [2021-12-21 15:14:56,078 INFO L242 Difference]: Finished difference. Result has 246 places, 0 transitions, 0 flow [2021-12-21 15:14:56,079 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=1669, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=246, PETRI_TRANSITIONS=0} [2021-12-21 15:14:56,079 INFO L334 CegarLoopForPetriNet]: 169 programPoint places, 77 predicate places. [2021-12-21 15:14:56,079 INFO L470 AbstractCegarLoop]: Abstraction has has 246 places, 0 transitions, 0 flow [2021-12-21 15:14:56,080 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 131.83333333333334) internal successors, (791), 6 states have internal predecessors, (791), 0 states have call successors, (0), 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 15:14:56,082 INFO L764 garLoopResultBuilder]: Registering result SAFE for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (8 of 9 remaining) [2021-12-21 15:14:56,082 INFO L764 garLoopResultBuilder]: Registering result SAFE for location t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION (7 of 9 remaining) [2021-12-21 15:14:56,082 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (6 of 9 remaining) [2021-12-21 15:14:56,082 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (5 of 9 remaining) [2021-12-21 15:14:56,082 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (4 of 9 remaining) [2021-12-21 15:14:56,082 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (3 of 9 remaining) [2021-12-21 15:14:56,083 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION (2 of 9 remaining) [2021-12-21 15:14:56,083 INFO L764 garLoopResultBuilder]: Registering result SAFE for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 9 remaining) [2021-12-21 15:14:56,083 INFO L764 garLoopResultBuilder]: Registering result SAFE for location t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 9 remaining) [2021-12-21 15:14:56,083 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-21 15:14:56,085 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:14:56,088 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-12-21 15:14:56,088 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-21 15:14:56,090 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.12 03:14:56 BasicIcfg [2021-12-21 15:14:56,090 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-21 15:14:56,090 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-21 15:14:56,091 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-21 15:14:56,091 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-21 15:14:56,091 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 03:14:21" (3/4) ... [2021-12-21 15:14:56,092 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-12-21 15:14:56,096 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure t2_fun [2021-12-21 15:14:56,096 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure t3_fun [2021-12-21 15:14:56,096 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2021-12-21 15:14:56,099 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2021-12-21 15:14:56,099 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-12-21 15:14:56,099 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-12-21 15:14:56,099 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-12-21 15:14:56,118 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-21 15:14:56,118 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-21 15:14:56,119 INFO L158 Benchmark]: Toolchain (without parser) took 35536.19ms. Allocated memory was 92.3MB in the beginning and 13.1GB in the end (delta: 13.0GB). Free memory was 60.2MB in the beginning and 10.9GB in the end (delta: -10.8GB). Peak memory consumption was 2.2GB. Max. memory is 16.1GB. [2021-12-21 15:14:56,119 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 92.3MB. Free memory was 49.0MB in the beginning and 49.0MB in the end (delta: 43.6kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-21 15:14:56,119 INFO L158 Benchmark]: CACSL2BoogieTranslator took 398.58ms. Allocated memory is still 92.3MB. Free memory was 60.0MB in the beginning and 58.8MB in the end (delta: 1.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-21 15:14:56,119 INFO L158 Benchmark]: Boogie Procedure Inliner took 52.06ms. Allocated memory is still 92.3MB. Free memory was 58.8MB in the beginning and 56.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-21 15:14:56,120 INFO L158 Benchmark]: Boogie Preprocessor took 35.08ms. Allocated memory is still 92.3MB. Free memory was 56.7MB in the beginning and 55.1MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-21 15:14:56,120 INFO L158 Benchmark]: RCFGBuilder took 401.24ms. Allocated memory was 92.3MB in the beginning and 113.2MB in the end (delta: 21.0MB). Free memory was 55.1MB in the beginning and 84.5MB in the end (delta: -29.4MB). Peak memory consumption was 17.6MB. Max. memory is 16.1GB. [2021-12-21 15:14:56,120 INFO L158 Benchmark]: TraceAbstraction took 34616.70ms. Allocated memory was 113.2MB in the beginning and 13.1GB in the end (delta: 13.0GB). Free memory was 84.0MB in the beginning and 10.9GB in the end (delta: -10.8GB). Peak memory consumption was 2.6GB. Max. memory is 16.1GB. [2021-12-21 15:14:56,120 INFO L158 Benchmark]: Witness Printer took 28.02ms. Allocated memory is still 13.1GB. Free memory was 10.9GB in the beginning and 10.9GB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-21 15:14:56,122 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 92.3MB. Free memory was 49.0MB in the beginning and 49.0MB in the end (delta: 43.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 398.58ms. Allocated memory is still 92.3MB. Free memory was 60.0MB in the beginning and 58.8MB in the end (delta: 1.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 52.06ms. Allocated memory is still 92.3MB. Free memory was 58.8MB in the beginning and 56.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 35.08ms. Allocated memory is still 92.3MB. Free memory was 56.7MB in the beginning and 55.1MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 401.24ms. Allocated memory was 92.3MB in the beginning and 113.2MB in the end (delta: 21.0MB). Free memory was 55.1MB in the beginning and 84.5MB in the end (delta: -29.4MB). Peak memory consumption was 17.6MB. Max. memory is 16.1GB. * TraceAbstraction took 34616.70ms. Allocated memory was 113.2MB in the beginning and 13.1GB in the end (delta: 13.0GB). Free memory was 84.0MB in the beginning and 10.9GB in the end (delta: -10.8GB). Peak memory consumption was 2.6GB. Max. memory is 16.1GB. * Witness Printer took 28.02ms. Allocated memory is still 13.1GB. Free memory was 10.9GB in the beginning and 10.9GB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 237 locations, 9 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 34.5s, OverallIterations: 10, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 33.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 765 SdHoareTripleChecker+Valid, 1.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 765 mSDsluCounter, 1165 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1132 mSDsCounter, 117 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1840 IncrementalHoareTripleChecker+Invalid, 1957 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 117 mSolverCounterUnsat, 254 mSDtfsCounter, 1840 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 146 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3495occurred in iteration=9, InterpolantAutomatonStates: 111, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 789 NumberOfCodeBlocks, 789 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 779 ConstructedInterpolants, 0 QuantifiedInterpolants, 2578 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-12-21 15:14:56,146 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE