./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe001_tso.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ae007674 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-wmm/safe001_tso.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 d13e05ad1104a4a5317ff09857a34619cbd86966f0892caf9775309ccc15230d --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-28 02:50:30,834 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 02:50:30,837 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 02:50:30,867 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 02:50:30,868 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 02:50:30,871 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 02:50:30,872 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 02:50:30,875 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 02:50:30,877 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 02:50:30,880 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 02:50:30,881 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 02:50:30,882 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 02:50:30,882 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 02:50:30,884 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 02:50:30,885 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 02:50:30,887 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 02:50:30,888 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 02:50:30,888 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 02:50:30,892 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 02:50:30,896 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 02:50:30,897 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 02:50:30,898 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 02:50:30,898 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 02:50:30,900 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 02:50:30,904 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 02:50:30,905 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 02:50:30,905 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 02:50:30,906 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 02:50:30,906 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 02:50:30,907 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 02:50:30,912 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 02:50:30,912 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 02:50:30,913 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 02:50:30,914 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 02:50:30,915 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 02:50:30,915 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 02:50:30,915 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 02:50:30,915 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 02:50:30,916 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 02:50:30,917 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 02:50:30,917 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 02:50:30,918 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-28 02:50:30,946 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 02:50:30,947 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 02:50:30,948 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 02:50:30,948 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 02:50:30,948 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-28 02:50:30,949 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-28 02:50:30,949 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 02:50:30,950 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 02:50:30,950 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 02:50:30,950 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 02:50:30,951 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-28 02:50:30,951 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 02:50:30,951 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-28 02:50:30,951 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 02:50:30,951 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-28 02:50:30,951 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-28 02:50:30,952 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-28 02:50:30,952 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-28 02:50:30,952 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 02:50:30,952 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 02:50:30,952 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-28 02:50:30,952 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 02:50:30,952 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 02:50:30,952 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-28 02:50:30,953 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 02:50:30,953 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 02:50:30,953 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-28 02:50:30,953 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-28 02:50:30,953 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 02:50:30,953 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-28 02:50:30,953 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-28 02:50:30,954 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-28 02:50:30,954 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-28 02:50:30,954 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d13e05ad1104a4a5317ff09857a34619cbd86966f0892caf9775309ccc15230d [2021-12-28 02:50:31,187 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 02:50:31,206 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 02:50:31,208 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 02:50:31,209 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 02:50:31,209 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 02:50:31,210 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe001_tso.i [2021-12-28 02:50:31,251 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34af63098/8b4880b2539242fb919bac0c386a23e4/FLAG3b067cace [2021-12-28 02:50:31,772 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 02:50:31,773 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe001_tso.i [2021-12-28 02:50:31,788 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34af63098/8b4880b2539242fb919bac0c386a23e4/FLAG3b067cace [2021-12-28 02:50:32,065 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34af63098/8b4880b2539242fb919bac0c386a23e4 [2021-12-28 02:50:32,067 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 02:50:32,069 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 02:50:32,070 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 02:50:32,071 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 02:50:32,073 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 02:50:32,074 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 02:50:32" (1/1) ... [2021-12-28 02:50:32,074 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f7212e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:50:32, skipping insertion in model container [2021-12-28 02:50:32,075 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 02:50:32" (1/1) ... [2021-12-28 02:50:32,079 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 02:50:32,117 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 02:50:32,250 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe001_tso.i[945,958] [2021-12-28 02:50:32,390 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 02:50:32,396 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 02:50:32,406 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe001_tso.i[945,958] [2021-12-28 02:50:32,447 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 02:50:32,480 INFO L208 MainTranslator]: Completed translation [2021-12-28 02:50:32,481 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:50:32 WrapperNode [2021-12-28 02:50:32,481 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 02:50:32,482 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 02:50:32,482 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 02:50:32,482 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 02:50:32,487 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:50:32" (1/1) ... [2021-12-28 02:50:32,511 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:50:32" (1/1) ... [2021-12-28 02:50:32,537 INFO L137 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 70 [2021-12-28 02:50:32,537 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 02:50:32,538 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 02:50:32,538 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 02:50:32,538 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 02:50:32,543 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:50:32" (1/1) ... [2021-12-28 02:50:32,543 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:50:32" (1/1) ... [2021-12-28 02:50:32,552 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:50:32" (1/1) ... [2021-12-28 02:50:32,552 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:50:32" (1/1) ... [2021-12-28 02:50:32,561 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:50:32" (1/1) ... [2021-12-28 02:50:32,563 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:50:32" (1/1) ... [2021-12-28 02:50:32,567 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:50:32" (1/1) ... [2021-12-28 02:50:32,570 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 02:50:32,573 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 02:50:32,573 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 02:50:32,574 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 02:50:32,574 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:50:32" (1/1) ... [2021-12-28 02:50:32,579 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 02:50:32,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 02:50:32,625 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) [2021-12-28 02:50:32,700 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 [2021-12-28 02:50:32,733 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-28 02:50:32,733 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-12-28 02:50:32,734 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-28 02:50:32,734 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-28 02:50:32,734 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-28 02:50:32,734 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-12-28 02:50:32,734 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-12-28 02:50:32,734 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-12-28 02:50:32,734 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-12-28 02:50:32,734 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-12-28 02:50:32,735 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-12-28 02:50:32,735 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-28 02:50:32,735 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-12-28 02:50:32,735 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 02:50:32,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 02:50:32,736 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-12-28 02:50:32,831 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 02:50:32,832 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 02:50:32,943 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 02:50:32,948 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 02:50:32,948 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-28 02:50:32,950 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 02:50:32 BoogieIcfgContainer [2021-12-28 02:50:32,950 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 02:50:32,951 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-28 02:50:32,951 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-28 02:50:32,953 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-28 02:50:32,953 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.12 02:50:32" (1/3) ... [2021-12-28 02:50:32,953 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@664c3e0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 02:50:32, skipping insertion in model container [2021-12-28 02:50:32,954 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:50:32" (2/3) ... [2021-12-28 02:50:32,954 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@664c3e0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 02:50:32, skipping insertion in model container [2021-12-28 02:50:32,954 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 02:50:32" (3/3) ... [2021-12-28 02:50:32,963 INFO L111 eAbstractionObserver]: Analyzing ICFG safe001_tso.i [2021-12-28 02:50:32,967 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-12-28 02:50:32,967 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-28 02:50:32,967 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-28 02:50:32,967 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-12-28 02:50:32,995 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:50:32,996 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:50:32,996 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:50:32,996 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:50:32,996 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:50:32,997 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:50:32,997 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:50:32,997 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:50:32,998 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:50:32,998 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:50:32,998 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:50:32,998 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:50:32,999 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:50:32,999 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:50:32,999 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:50:32,999 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:50:33,000 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:50:33,000 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:50:33,000 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:50:33,000 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:50:33,001 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:50:33,001 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:50:33,001 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:50:33,001 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:50:33,002 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:50:33,002 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:50:33,002 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:50:33,002 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:50:33,003 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:50:33,003 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:50:33,003 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:50:33,003 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:50:33,004 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:50:33,004 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:50:33,004 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:50:33,005 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:50:33,008 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:50:33,008 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:50:33,008 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:50:33,008 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:50:33,010 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:50:33,011 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:50:33,011 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:50:33,011 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:50:33,012 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:50:33,012 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:50:33,012 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:50:33,013 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:50:33,013 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-12-28 02:50:33,043 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-28 02:50:33,048 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 [2021-12-28 02:50:33,048 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-12-28 02:50:33,056 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 99 places, 91 transitions, 197 flow [2021-12-28 02:50:33,084 INFO L129 PetriNetUnfolder]: 2/88 cut-off events. [2021-12-28 02:50:33,084 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-12-28 02:50:33,087 INFO L84 FinitePrefix]: Finished finitePrefix Result has 98 conditions, 88 events. 2/88 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/85 useless extension candidates. Maximal degree in co-relation 68. Up to 2 conditions per place. [2021-12-28 02:50:33,087 INFO L82 GeneralOperation]: Start removeDead. Operand has 99 places, 91 transitions, 197 flow [2021-12-28 02:50:33,090 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 83 places, 74 transitions, 157 flow [2021-12-28 02:50:33,103 INFO L129 PetriNetUnfolder]: 1/73 cut-off events. [2021-12-28 02:50:33,103 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-12-28 02:50:33,104 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-28 02:50:33,104 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] [2021-12-28 02:50:33,105 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-28 02:50:33,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:50:33,108 INFO L85 PathProgramCache]: Analyzing trace with hash -1258848663, now seen corresponding path program 1 times [2021-12-28 02:50:33,114 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:50:33,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522206278] [2021-12-28 02:50:33,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:50:33,115 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:50:33,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:50:33,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:50:33,467 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:50:33,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522206278] [2021-12-28 02:50:33,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522206278] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:50:33,468 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:50:33,468 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-28 02:50:33,469 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806316570] [2021-12-28 02:50:33,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:50:33,475 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 02:50:33,476 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:50:33,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 02:50:33,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-28 02:50:33,507 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 91 [2021-12-28 02:50:33,513 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 74 transitions, 157 flow. Second operand has 6 states, 6 states have (on average 70.16666666666667) internal successors, (421), 6 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:50:33,514 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-28 02:50:33,514 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 91 [2021-12-28 02:50:33,515 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-28 02:50:33,870 INFO L129 PetriNetUnfolder]: 661/1497 cut-off events. [2021-12-28 02:50:33,870 INFO L130 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2021-12-28 02:50:33,888 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2592 conditions, 1497 events. 661/1497 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 9722 event pairs, 112 based on Foata normal form. 43/1490 useless extension candidates. Maximal degree in co-relation 2555. Up to 324 conditions per place. [2021-12-28 02:50:33,893 INFO L132 encePairwiseOnDemand]: 79/91 looper letters, 24 selfloop transitions, 7 changer transitions 43/128 dead transitions. [2021-12-28 02:50:33,893 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 128 transitions, 419 flow [2021-12-28 02:50:33,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 02:50:33,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-12-28 02:50:33,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 690 transitions. [2021-12-28 02:50:33,930 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8424908424908425 [2021-12-28 02:50:33,930 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 690 transitions. [2021-12-28 02:50:33,931 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 690 transitions. [2021-12-28 02:50:33,932 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 02:50:33,934 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 690 transitions. [2021-12-28 02:50:33,940 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 76.66666666666667) internal successors, (690), 9 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:50:33,946 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 91.0) internal successors, (910), 10 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:50:33,949 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 91.0) internal successors, (910), 10 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:50:33,950 INFO L186 Difference]: Start difference. First operand has 83 places, 74 transitions, 157 flow. Second operand 9 states and 690 transitions. [2021-12-28 02:50:33,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 128 transitions, 419 flow [2021-12-28 02:50:33,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 128 transitions, 414 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-12-28 02:50:33,957 INFO L242 Difference]: Finished difference. Result has 96 places, 79 transitions, 254 flow [2021-12-28 02:50:33,959 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=254, PETRI_PLACES=96, PETRI_TRANSITIONS=79} [2021-12-28 02:50:33,964 INFO L334 CegarLoopForPetriNet]: 83 programPoint places, 13 predicate places. [2021-12-28 02:50:33,965 INFO L470 AbstractCegarLoop]: Abstraction has has 96 places, 79 transitions, 254 flow [2021-12-28 02:50:33,965 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 70.16666666666667) internal successors, (421), 6 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:50:33,965 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-28 02:50:33,966 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] [2021-12-28 02:50:33,966 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-28 02:50:33,966 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-28 02:50:33,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:50:33,967 INFO L85 PathProgramCache]: Analyzing trace with hash 604444522, now seen corresponding path program 1 times [2021-12-28 02:50:33,967 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:50:33,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856922514] [2021-12-28 02:50:33,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:50:33,968 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:50:34,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:50:34,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:50:34,092 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:50:34,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856922514] [2021-12-28 02:50:34,092 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856922514] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:50:34,092 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:50:34,092 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 02:50:34,092 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099630451] [2021-12-28 02:50:34,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:50:34,094 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 02:50:34,094 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:50:34,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 02:50:34,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-28 02:50:34,095 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 91 [2021-12-28 02:50:34,096 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 79 transitions, 254 flow. Second operand has 7 states, 7 states have (on average 70.0) internal successors, (490), 7 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:50:34,096 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-28 02:50:34,096 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 91 [2021-12-28 02:50:34,096 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-28 02:50:34,416 INFO L129 PetriNetUnfolder]: 405/1168 cut-off events. [2021-12-28 02:50:34,417 INFO L130 PetriNetUnfolder]: For 2085/2534 co-relation queries the response was YES. [2021-12-28 02:50:34,419 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3551 conditions, 1168 events. 405/1168 cut-off events. For 2085/2534 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 7926 event pairs, 12 based on Foata normal form. 39/1177 useless extension candidates. Maximal degree in co-relation 3507. Up to 266 conditions per place. [2021-12-28 02:50:34,423 INFO L132 encePairwiseOnDemand]: 79/91 looper letters, 31 selfloop transitions, 12 changer transitions 82/179 dead transitions. [2021-12-28 02:50:34,423 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 179 transitions, 1250 flow [2021-12-28 02:50:34,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-28 02:50:34,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-12-28 02:50:34,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 988 transitions. [2021-12-28 02:50:34,426 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8351648351648352 [2021-12-28 02:50:34,426 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 988 transitions. [2021-12-28 02:50:34,426 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 988 transitions. [2021-12-28 02:50:34,426 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 02:50:34,427 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 988 transitions. [2021-12-28 02:50:34,429 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 76.0) internal successors, (988), 13 states have internal predecessors, (988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:50:34,432 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 91.0) internal successors, (1274), 14 states have internal predecessors, (1274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:50:34,433 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 91.0) internal successors, (1274), 14 states have internal predecessors, (1274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:50:34,433 INFO L186 Difference]: Start difference. First operand has 96 places, 79 transitions, 254 flow. Second operand 13 states and 988 transitions. [2021-12-28 02:50:34,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 179 transitions, 1250 flow [2021-12-28 02:50:34,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 179 transitions, 1152 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-12-28 02:50:34,442 INFO L242 Difference]: Finished difference. Result has 112 places, 87 transitions, 400 flow [2021-12-28 02:50:34,442 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=400, PETRI_PLACES=112, PETRI_TRANSITIONS=87} [2021-12-28 02:50:34,442 INFO L334 CegarLoopForPetriNet]: 83 programPoint places, 29 predicate places. [2021-12-28 02:50:34,443 INFO L470 AbstractCegarLoop]: Abstraction has has 112 places, 87 transitions, 400 flow [2021-12-28 02:50:34,443 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 70.0) internal successors, (490), 7 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:50:34,443 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-28 02:50:34,443 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] [2021-12-28 02:50:34,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-28 02:50:34,444 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-28 02:50:34,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:50:34,444 INFO L85 PathProgramCache]: Analyzing trace with hash -1662286354, now seen corresponding path program 1 times [2021-12-28 02:50:34,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:50:34,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303885382] [2021-12-28 02:50:34,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:50:34,445 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:50:34,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:50:34,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:50:34,558 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:50:34,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303885382] [2021-12-28 02:50:34,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303885382] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:50:34,558 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:50:34,559 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 02:50:34,559 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39768927] [2021-12-28 02:50:34,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:50:34,559 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 02:50:34,559 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:50:34,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 02:50:34,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-28 02:50:34,561 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 91 [2021-12-28 02:50:34,561 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 87 transitions, 400 flow. Second operand has 7 states, 7 states have (on average 70.14285714285714) internal successors, (491), 7 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:50:34,561 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-28 02:50:34,562 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 91 [2021-12-28 02:50:34,562 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-28 02:50:34,877 INFO L129 PetriNetUnfolder]: 188/596 cut-off events. [2021-12-28 02:50:34,891 INFO L130 PetriNetUnfolder]: For 2682/3621 co-relation queries the response was YES. [2021-12-28 02:50:34,893 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2347 conditions, 596 events. 188/596 cut-off events. For 2682/3621 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 3313 event pairs, 6 based on Foata normal form. 12/588 useless extension candidates. Maximal degree in co-relation 2289. Up to 143 conditions per place. [2021-12-28 02:50:34,896 INFO L132 encePairwiseOnDemand]: 79/91 looper letters, 32 selfloop transitions, 19 changer transitions 40/145 dead transitions. [2021-12-28 02:50:34,896 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 145 transitions, 1128 flow [2021-12-28 02:50:34,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-28 02:50:34,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-12-28 02:50:34,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 964 transitions. [2021-12-28 02:50:34,898 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8148774302620456 [2021-12-28 02:50:34,898 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 964 transitions. [2021-12-28 02:50:34,898 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 964 transitions. [2021-12-28 02:50:34,899 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 02:50:34,899 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 964 transitions. [2021-12-28 02:50:34,901 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 74.15384615384616) internal successors, (964), 13 states have internal predecessors, (964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:50:34,902 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 91.0) internal successors, (1274), 14 states have internal predecessors, (1274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:50:34,902 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 91.0) internal successors, (1274), 14 states have internal predecessors, (1274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:50:34,915 INFO L186 Difference]: Start difference. First operand has 112 places, 87 transitions, 400 flow. Second operand 13 states and 964 transitions. [2021-12-28 02:50:34,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 145 transitions, 1128 flow [2021-12-28 02:50:34,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 145 transitions, 1080 flow, removed 24 selfloop flow, removed 0 redundant places. [2021-12-28 02:50:34,924 INFO L242 Difference]: Finished difference. Result has 127 places, 95 transitions, 584 flow [2021-12-28 02:50:34,924 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=388, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=584, PETRI_PLACES=127, PETRI_TRANSITIONS=95} [2021-12-28 02:50:34,925 INFO L334 CegarLoopForPetriNet]: 83 programPoint places, 44 predicate places. [2021-12-28 02:50:34,925 INFO L470 AbstractCegarLoop]: Abstraction has has 127 places, 95 transitions, 584 flow [2021-12-28 02:50:34,926 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 70.14285714285714) internal successors, (491), 7 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:50:34,926 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-28 02:50:34,926 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] [2021-12-28 02:50:34,926 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-28 02:50:34,926 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-28 02:50:34,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:50:34,927 INFO L85 PathProgramCache]: Analyzing trace with hash -907393285, now seen corresponding path program 1 times [2021-12-28 02:50:34,927 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:50:34,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78118596] [2021-12-28 02:50:34,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:50:34,928 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:50:34,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:50:35,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:50:35,061 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:50:35,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78118596] [2021-12-28 02:50:35,061 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78118596] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:50:35,062 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:50:35,062 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 02:50:35,062 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227332257] [2021-12-28 02:50:35,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:50:35,062 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 02:50:35,062 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:50:35,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 02:50:35,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-28 02:50:35,064 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 91 [2021-12-28 02:50:35,065 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 95 transitions, 584 flow. Second operand has 7 states, 7 states have (on average 70.28571428571429) internal successors, (492), 7 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:50:35,065 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-28 02:50:35,065 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 91 [2021-12-28 02:50:35,065 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-28 02:50:35,265 INFO L129 PetriNetUnfolder]: 139/586 cut-off events. [2021-12-28 02:50:35,265 INFO L130 PetriNetUnfolder]: For 3728/4062 co-relation queries the response was YES. [2021-12-28 02:50:35,267 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2385 conditions, 586 events. 139/586 cut-off events. For 3728/4062 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 3391 event pairs, 7 based on Foata normal form. 24/591 useless extension candidates. Maximal degree in co-relation 2311. Up to 118 conditions per place. [2021-12-28 02:50:35,270 INFO L132 encePairwiseOnDemand]: 80/91 looper letters, 35 selfloop transitions, 20 changer transitions 31/140 dead transitions. [2021-12-28 02:50:35,270 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 140 transitions, 1252 flow [2021-12-28 02:50:35,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-28 02:50:35,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-12-28 02:50:35,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 949 transitions. [2021-12-28 02:50:35,272 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8021978021978022 [2021-12-28 02:50:35,272 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 949 transitions. [2021-12-28 02:50:35,272 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 949 transitions. [2021-12-28 02:50:35,272 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 02:50:35,273 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 949 transitions. [2021-12-28 02:50:35,274 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 73.0) internal successors, (949), 13 states have internal predecessors, (949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:50:35,275 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 91.0) internal successors, (1274), 14 states have internal predecessors, (1274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:50:35,276 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 91.0) internal successors, (1274), 14 states have internal predecessors, (1274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:50:35,276 INFO L186 Difference]: Start difference. First operand has 127 places, 95 transitions, 584 flow. Second operand 13 states and 949 transitions. [2021-12-28 02:50:35,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 140 transitions, 1252 flow [2021-12-28 02:50:35,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 140 transitions, 1100 flow, removed 76 selfloop flow, removed 15 redundant places. [2021-12-28 02:50:35,284 INFO L242 Difference]: Finished difference. Result has 126 places, 96 transitions, 614 flow [2021-12-28 02:50:35,284 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=510, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=614, PETRI_PLACES=126, PETRI_TRANSITIONS=96} [2021-12-28 02:50:35,285 INFO L334 CegarLoopForPetriNet]: 83 programPoint places, 43 predicate places. [2021-12-28 02:50:35,285 INFO L470 AbstractCegarLoop]: Abstraction has has 126 places, 96 transitions, 614 flow [2021-12-28 02:50:35,285 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 70.28571428571429) internal successors, (492), 7 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:50:35,286 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-28 02:50:35,286 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] [2021-12-28 02:50:35,286 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-28 02:50:35,286 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-28 02:50:35,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:50:35,287 INFO L85 PathProgramCache]: Analyzing trace with hash 1067513327, now seen corresponding path program 1 times [2021-12-28 02:50:35,287 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:50:35,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175425696] [2021-12-28 02:50:35,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:50:35,287 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:50:35,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:50:35,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:50:35,356 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:50:35,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175425696] [2021-12-28 02:50:35,356 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175425696] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:50:35,357 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:50:35,357 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 02:50:35,357 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888257296] [2021-12-28 02:50:35,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:50:35,357 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 02:50:35,357 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:50:35,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 02:50:35,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 02:50:35,359 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 91 [2021-12-28 02:50:35,359 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 96 transitions, 614 flow. Second operand has 7 states, 7 states have (on average 73.85714285714286) internal successors, (517), 7 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:50:35,359 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-28 02:50:35,359 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 91 [2021-12-28 02:50:35,359 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-28 02:50:35,453 INFO L129 PetriNetUnfolder]: 85/390 cut-off events. [2021-12-28 02:50:35,453 INFO L130 PetriNetUnfolder]: For 2850/4162 co-relation queries the response was YES. [2021-12-28 02:50:35,455 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1702 conditions, 390 events. 85/390 cut-off events. For 2850/4162 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 2068 event pairs, 3 based on Foata normal form. 28/404 useless extension candidates. Maximal degree in co-relation 1640. Up to 79 conditions per place. [2021-12-28 02:50:35,456 INFO L132 encePairwiseOnDemand]: 82/91 looper letters, 17 selfloop transitions, 6 changer transitions 32/119 dead transitions. [2021-12-28 02:50:35,456 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 119 transitions, 1015 flow [2021-12-28 02:50:35,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-28 02:50:35,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-12-28 02:50:35,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 537 transitions. [2021-12-28 02:50:35,458 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8430141287284144 [2021-12-28 02:50:35,458 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 537 transitions. [2021-12-28 02:50:35,458 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 537 transitions. [2021-12-28 02:50:35,458 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 02:50:35,458 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 537 transitions. [2021-12-28 02:50:35,459 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 76.71428571428571) internal successors, (537), 7 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:50:35,460 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 91.0) internal successors, (728), 8 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:50:35,460 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 91.0) internal successors, (728), 8 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:50:35,460 INFO L186 Difference]: Start difference. First operand has 126 places, 96 transitions, 614 flow. Second operand 7 states and 537 transitions. [2021-12-28 02:50:35,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 119 transitions, 1015 flow [2021-12-28 02:50:35,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 119 transitions, 969 flow, removed 23 selfloop flow, removed 7 redundant places. [2021-12-28 02:50:35,469 INFO L242 Difference]: Finished difference. Result has 120 places, 84 transitions, 446 flow [2021-12-28 02:50:35,469 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=590, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=446, PETRI_PLACES=120, PETRI_TRANSITIONS=84} [2021-12-28 02:50:35,470 INFO L334 CegarLoopForPetriNet]: 83 programPoint places, 37 predicate places. [2021-12-28 02:50:35,470 INFO L470 AbstractCegarLoop]: Abstraction has has 120 places, 84 transitions, 446 flow [2021-12-28 02:50:35,470 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 73.85714285714286) internal successors, (517), 7 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:50:35,470 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-28 02:50:35,470 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] [2021-12-28 02:50:35,471 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-28 02:50:35,471 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-28 02:50:35,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:50:35,471 INFO L85 PathProgramCache]: Analyzing trace with hash -386487251, now seen corresponding path program 1 times [2021-12-28 02:50:35,471 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:50:35,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139341706] [2021-12-28 02:50:35,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:50:35,472 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:50:35,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:50:35,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:50:35,543 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:50:35,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139341706] [2021-12-28 02:50:35,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139341706] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:50:35,543 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:50:35,543 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 02:50:35,543 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538667482] [2021-12-28 02:50:35,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:50:35,544 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 02:50:35,544 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:50:35,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 02:50:35,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-28 02:50:35,545 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 91 [2021-12-28 02:50:35,549 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 84 transitions, 446 flow. Second operand has 7 states, 7 states have (on average 70.42857142857143) internal successors, (493), 7 states have internal predecessors, (493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:50:35,549 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-28 02:50:35,549 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 91 [2021-12-28 02:50:35,550 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-28 02:50:35,691 INFO L129 PetriNetUnfolder]: 35/258 cut-off events. [2021-12-28 02:50:35,691 INFO L130 PetriNetUnfolder]: For 1113/1177 co-relation queries the response was YES. [2021-12-28 02:50:35,693 INFO L84 FinitePrefix]: Finished finitePrefix Result has 860 conditions, 258 events. 35/258 cut-off events. For 1113/1177 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1055 event pairs, 3 based on Foata normal form. 7/255 useless extension candidates. Maximal degree in co-relation 803. Up to 35 conditions per place. [2021-12-28 02:50:35,694 INFO L132 encePairwiseOnDemand]: 80/91 looper letters, 29 selfloop transitions, 12 changer transitions 16/111 dead transitions. [2021-12-28 02:50:35,694 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 111 transitions, 825 flow [2021-12-28 02:50:35,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-28 02:50:35,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-12-28 02:50:35,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 939 transitions. [2021-12-28 02:50:35,696 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7937447168216399 [2021-12-28 02:50:35,696 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 939 transitions. [2021-12-28 02:50:35,696 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 939 transitions. [2021-12-28 02:50:35,697 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 02:50:35,697 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 939 transitions. [2021-12-28 02:50:35,699 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 72.23076923076923) internal successors, (939), 13 states have internal predecessors, (939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:50:35,700 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 91.0) internal successors, (1274), 14 states have internal predecessors, (1274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:50:35,700 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 91.0) internal successors, (1274), 14 states have internal predecessors, (1274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:50:35,700 INFO L186 Difference]: Start difference. First operand has 120 places, 84 transitions, 446 flow. Second operand 13 states and 939 transitions. [2021-12-28 02:50:35,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 111 transitions, 825 flow [2021-12-28 02:50:35,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 111 transitions, 671 flow, removed 60 selfloop flow, removed 10 redundant places. [2021-12-28 02:50:35,705 INFO L242 Difference]: Finished difference. Result has 131 places, 86 transitions, 479 flow [2021-12-28 02:50:35,706 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=378, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=479, PETRI_PLACES=131, PETRI_TRANSITIONS=86} [2021-12-28 02:50:35,706 INFO L334 CegarLoopForPetriNet]: 83 programPoint places, 48 predicate places. [2021-12-28 02:50:35,706 INFO L470 AbstractCegarLoop]: Abstraction has has 131 places, 86 transitions, 479 flow [2021-12-28 02:50:35,707 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 70.42857142857143) internal successors, (493), 7 states have internal predecessors, (493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:50:35,707 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-28 02:50:35,707 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] [2021-12-28 02:50:35,707 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-28 02:50:35,707 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-28 02:50:35,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:50:35,708 INFO L85 PathProgramCache]: Analyzing trace with hash 10788072, now seen corresponding path program 1 times [2021-12-28 02:50:35,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:50:35,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534008104] [2021-12-28 02:50:35,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:50:35,708 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:50:35,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:50:35,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:50:35,805 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:50:35,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534008104] [2021-12-28 02:50:35,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534008104] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:50:35,806 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:50:35,806 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-28 02:50:35,806 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720717571] [2021-12-28 02:50:35,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:50:35,807 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-28 02:50:35,807 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:50:35,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-28 02:50:35,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-28 02:50:35,808 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 91 [2021-12-28 02:50:35,809 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 86 transitions, 479 flow. Second operand has 8 states, 8 states have (on average 70.25) internal successors, (562), 8 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:50:35,809 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-28 02:50:35,809 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 91 [2021-12-28 02:50:35,809 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-28 02:50:35,888 INFO L129 PetriNetUnfolder]: 31/222 cut-off events. [2021-12-28 02:50:35,888 INFO L130 PetriNetUnfolder]: For 1053/1459 co-relation queries the response was YES. [2021-12-28 02:50:35,889 INFO L84 FinitePrefix]: Finished finitePrefix Result has 870 conditions, 222 events. 31/222 cut-off events. For 1053/1459 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 892 event pairs, 8 based on Foata normal form. 5/213 useless extension candidates. Maximal degree in co-relation 806. Up to 35 conditions per place. [2021-12-28 02:50:35,890 INFO L132 encePairwiseOnDemand]: 80/91 looper letters, 24 selfloop transitions, 9 changer transitions 18/105 dead transitions. [2021-12-28 02:50:35,890 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 105 transitions, 787 flow [2021-12-28 02:50:35,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-28 02:50:35,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-12-28 02:50:35,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 586 transitions. [2021-12-28 02:50:35,892 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.804945054945055 [2021-12-28 02:50:35,892 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 586 transitions. [2021-12-28 02:50:35,892 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 586 transitions. [2021-12-28 02:50:35,892 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 02:50:35,892 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 586 transitions. [2021-12-28 02:50:35,893 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 73.25) internal successors, (586), 8 states have internal predecessors, (586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:50:35,894 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 91.0) internal successors, (819), 9 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:50:35,895 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 91.0) internal successors, (819), 9 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:50:35,895 INFO L186 Difference]: Start difference. First operand has 131 places, 86 transitions, 479 flow. Second operand 8 states and 586 transitions. [2021-12-28 02:50:35,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 105 transitions, 787 flow [2021-12-28 02:50:35,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 105 transitions, 680 flow, removed 51 selfloop flow, removed 19 redundant places. [2021-12-28 02:50:35,900 INFO L242 Difference]: Finished difference. Result has 114 places, 79 transitions, 364 flow [2021-12-28 02:50:35,900 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=429, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=364, PETRI_PLACES=114, PETRI_TRANSITIONS=79} [2021-12-28 02:50:35,901 INFO L334 CegarLoopForPetriNet]: 83 programPoint places, 31 predicate places. [2021-12-28 02:50:35,901 INFO L470 AbstractCegarLoop]: Abstraction has has 114 places, 79 transitions, 364 flow [2021-12-28 02:50:35,901 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 70.25) internal successors, (562), 8 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:50:35,901 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-28 02:50:35,901 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] [2021-12-28 02:50:35,902 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-28 02:50:35,902 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-28 02:50:35,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:50:35,902 INFO L85 PathProgramCache]: Analyzing trace with hash -1218612858, now seen corresponding path program 2 times [2021-12-28 02:50:35,902 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:50:35,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017396291] [2021-12-28 02:50:35,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:50:35,903 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:50:35,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:50:35,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:50:35,971 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:50:35,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017396291] [2021-12-28 02:50:35,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017396291] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:50:35,971 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:50:35,971 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-28 02:50:35,972 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91137914] [2021-12-28 02:50:35,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:50:35,972 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-28 02:50:35,972 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:50:35,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-28 02:50:35,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-28 02:50:35,973 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 91 [2021-12-28 02:50:35,974 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 79 transitions, 364 flow. Second operand has 8 states, 8 states have (on average 70.25) internal successors, (562), 8 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:50:35,974 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-28 02:50:35,974 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 91 [2021-12-28 02:50:35,974 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-28 02:50:36,056 INFO L129 PetriNetUnfolder]: 14/146 cut-off events. [2021-12-28 02:50:36,056 INFO L130 PetriNetUnfolder]: For 714/868 co-relation queries the response was YES. [2021-12-28 02:50:36,057 INFO L84 FinitePrefix]: Finished finitePrefix Result has 516 conditions, 146 events. 14/146 cut-off events. For 714/868 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 408 event pairs, 0 based on Foata normal form. 6/148 useless extension candidates. Maximal degree in co-relation 477. Up to 21 conditions per place. [2021-12-28 02:50:36,057 INFO L132 encePairwiseOnDemand]: 81/91 looper letters, 20 selfloop transitions, 5 changer transitions 17/95 dead transitions. [2021-12-28 02:50:36,057 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 95 transitions, 584 flow [2021-12-28 02:50:36,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 02:50:36,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-12-28 02:50:36,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 651 transitions. [2021-12-28 02:50:36,059 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7948717948717948 [2021-12-28 02:50:36,059 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 651 transitions. [2021-12-28 02:50:36,059 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 651 transitions. [2021-12-28 02:50:36,060 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 02:50:36,060 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 651 transitions. [2021-12-28 02:50:36,061 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 72.33333333333333) internal successors, (651), 9 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:50:36,062 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 91.0) internal successors, (910), 10 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:50:36,062 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 91.0) internal successors, (910), 10 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:50:36,062 INFO L186 Difference]: Start difference. First operand has 114 places, 79 transitions, 364 flow. Second operand 9 states and 651 transitions. [2021-12-28 02:50:36,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 95 transitions, 584 flow [2021-12-28 02:50:36,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 95 transitions, 430 flow, removed 16 selfloop flow, removed 17 redundant places. [2021-12-28 02:50:36,065 INFO L242 Difference]: Finished difference. Result has 106 places, 72 transitions, 230 flow [2021-12-28 02:50:36,065 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=230, PETRI_PLACES=106, PETRI_TRANSITIONS=72} [2021-12-28 02:50:36,066 INFO L334 CegarLoopForPetriNet]: 83 programPoint places, 23 predicate places. [2021-12-28 02:50:36,066 INFO L470 AbstractCegarLoop]: Abstraction has has 106 places, 72 transitions, 230 flow [2021-12-28 02:50:36,066 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 70.25) internal successors, (562), 8 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:50:36,066 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-28 02:50:36,067 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] [2021-12-28 02:50:36,067 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-28 02:50:36,067 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-28 02:50:36,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:50:36,067 INFO L85 PathProgramCache]: Analyzing trace with hash 336156504, now seen corresponding path program 3 times [2021-12-28 02:50:36,067 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:50:36,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639879316] [2021-12-28 02:50:36,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:50:36,068 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:50:36,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:50:36,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:50:36,139 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:50:36,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639879316] [2021-12-28 02:50:36,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639879316] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:50:36,139 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:50:36,139 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-28 02:50:36,139 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402423649] [2021-12-28 02:50:36,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:50:36,140 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 02:50:36,140 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:50:36,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 02:50:36,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-28 02:50:36,141 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 91 [2021-12-28 02:50:36,141 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 72 transitions, 230 flow. Second operand has 6 states, 6 states have (on average 75.66666666666667) internal successors, (454), 6 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:50:36,141 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-28 02:50:36,141 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 91 [2021-12-28 02:50:36,141 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-28 02:50:36,243 INFO L129 PetriNetUnfolder]: 94/315 cut-off events. [2021-12-28 02:50:36,243 INFO L130 PetriNetUnfolder]: For 110/114 co-relation queries the response was YES. [2021-12-28 02:50:36,244 INFO L84 FinitePrefix]: Finished finitePrefix Result has 601 conditions, 315 events. 94/315 cut-off events. For 110/114 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1463 event pairs, 2 based on Foata normal form. 8/317 useless extension candidates. Maximal degree in co-relation 577. Up to 86 conditions per place. [2021-12-28 02:50:36,245 INFO L132 encePairwiseOnDemand]: 82/91 looper letters, 13 selfloop transitions, 5 changer transitions 21/98 dead transitions. [2021-12-28 02:50:36,245 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 98 transitions, 362 flow [2021-12-28 02:50:36,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 02:50:36,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-12-28 02:50:36,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 707 transitions. [2021-12-28 02:50:36,261 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8632478632478633 [2021-12-28 02:50:36,261 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 707 transitions. [2021-12-28 02:50:36,261 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 707 transitions. [2021-12-28 02:50:36,262 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 02:50:36,262 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 707 transitions. [2021-12-28 02:50:36,263 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 78.55555555555556) internal successors, (707), 9 states have internal predecessors, (707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:50:36,265 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 91.0) internal successors, (910), 10 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:50:36,265 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 91.0) internal successors, (910), 10 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:50:36,265 INFO L186 Difference]: Start difference. First operand has 106 places, 72 transitions, 230 flow. Second operand 9 states and 707 transitions. [2021-12-28 02:50:36,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 98 transitions, 362 flow [2021-12-28 02:50:36,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 98 transitions, 304 flow, removed 8 selfloop flow, removed 16 redundant places. [2021-12-28 02:50:36,268 INFO L242 Difference]: Finished difference. Result has 98 places, 74 transitions, 222 flow [2021-12-28 02:50:36,268 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=222, PETRI_PLACES=98, PETRI_TRANSITIONS=74} [2021-12-28 02:50:36,269 INFO L334 CegarLoopForPetriNet]: 83 programPoint places, 15 predicate places. [2021-12-28 02:50:36,269 INFO L470 AbstractCegarLoop]: Abstraction has has 98 places, 74 transitions, 222 flow [2021-12-28 02:50:36,270 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 75.66666666666667) internal successors, (454), 6 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:50:36,270 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-28 02:50:36,270 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] [2021-12-28 02:50:36,270 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-28 02:50:36,271 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-28 02:50:36,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:50:36,271 INFO L85 PathProgramCache]: Analyzing trace with hash -1745597349, now seen corresponding path program 1 times [2021-12-28 02:50:36,271 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:50:36,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974439051] [2021-12-28 02:50:36,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:50:36,272 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:50:36,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:50:36,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:50:36,382 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:50:36,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974439051] [2021-12-28 02:50:36,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974439051] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:50:36,382 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:50:36,383 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 02:50:36,383 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555797706] [2021-12-28 02:50:36,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:50:36,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 02:50:36,383 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:50:36,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 02:50:36,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-28 02:50:36,384 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 91 [2021-12-28 02:50:36,384 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 74 transitions, 222 flow. Second operand has 7 states, 7 states have (on average 75.57142857142857) internal successors, (529), 7 states have internal predecessors, (529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:50:36,384 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-28 02:50:36,385 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 91 [2021-12-28 02:50:36,385 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-28 02:50:36,462 INFO L129 PetriNetUnfolder]: 43/199 cut-off events. [2021-12-28 02:50:36,462 INFO L130 PetriNetUnfolder]: For 257/275 co-relation queries the response was YES. [2021-12-28 02:50:36,462 INFO L84 FinitePrefix]: Finished finitePrefix Result has 555 conditions, 199 events. 43/199 cut-off events. For 257/275 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 687 event pairs, 0 based on Foata normal form. 7/204 useless extension candidates. Maximal degree in co-relation 511. Up to 65 conditions per place. [2021-12-28 02:50:36,463 INFO L132 encePairwiseOnDemand]: 82/91 looper letters, 9 selfloop transitions, 7 changer transitions 25/100 dead transitions. [2021-12-28 02:50:36,463 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 100 transitions, 485 flow [2021-12-28 02:50:36,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-28 02:50:36,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-12-28 02:50:36,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 783 transitions. [2021-12-28 02:50:36,476 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8604395604395605 [2021-12-28 02:50:36,477 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 783 transitions. [2021-12-28 02:50:36,477 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 783 transitions. [2021-12-28 02:50:36,477 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 02:50:36,477 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 783 transitions. [2021-12-28 02:50:36,478 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 78.3) internal successors, (783), 10 states have internal predecessors, (783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:50:36,479 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 91.0) internal successors, (1001), 11 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:50:36,479 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 91.0) internal successors, (1001), 11 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:50:36,479 INFO L186 Difference]: Start difference. First operand has 98 places, 74 transitions, 222 flow. Second operand 10 states and 783 transitions. [2021-12-28 02:50:36,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 100 transitions, 485 flow [2021-12-28 02:50:36,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 100 transitions, 462 flow, removed 7 selfloop flow, removed 5 redundant places. [2021-12-28 02:50:36,481 INFO L242 Difference]: Finished difference. Result has 104 places, 74 transitions, 248 flow [2021-12-28 02:50:36,482 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=209, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=248, PETRI_PLACES=104, PETRI_TRANSITIONS=74} [2021-12-28 02:50:36,482 INFO L334 CegarLoopForPetriNet]: 83 programPoint places, 21 predicate places. [2021-12-28 02:50:36,482 INFO L470 AbstractCegarLoop]: Abstraction has has 104 places, 74 transitions, 248 flow [2021-12-28 02:50:36,482 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 75.57142857142857) internal successors, (529), 7 states have internal predecessors, (529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:50:36,482 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-28 02:50:36,483 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] [2021-12-28 02:50:36,483 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-28 02:50:36,483 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-28 02:50:36,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:50:36,485 INFO L85 PathProgramCache]: Analyzing trace with hash -529692920, now seen corresponding path program 1 times [2021-12-28 02:50:36,485 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:50:36,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167134277] [2021-12-28 02:50:36,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:50:36,488 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:50:36,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:50:36,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:50:36,597 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:50:36,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167134277] [2021-12-28 02:50:36,597 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167134277] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:50:36,597 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:50:36,597 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-28 02:50:36,597 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628199979] [2021-12-28 02:50:36,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:50:36,598 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-28 02:50:36,598 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:50:36,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-28 02:50:36,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-28 02:50:36,598 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 91 [2021-12-28 02:50:36,599 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 74 transitions, 248 flow. Second operand has 8 states, 8 states have (on average 75.5) internal successors, (604), 8 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:50:36,599 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-28 02:50:36,599 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 91 [2021-12-28 02:50:36,599 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-28 02:50:36,687 INFO L129 PetriNetUnfolder]: 5/87 cut-off events. [2021-12-28 02:50:36,687 INFO L130 PetriNetUnfolder]: For 184/203 co-relation queries the response was YES. [2021-12-28 02:50:36,688 INFO L84 FinitePrefix]: Finished finitePrefix Result has 223 conditions, 87 events. 5/87 cut-off events. For 184/203 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 112 event pairs, 0 based on Foata normal form. 6/93 useless extension candidates. Maximal degree in co-relation 203. Up to 14 conditions per place. [2021-12-28 02:50:36,688 INFO L132 encePairwiseOnDemand]: 82/91 looper letters, 0 selfloop transitions, 0 changer transitions 77/77 dead transitions. [2021-12-28 02:50:36,688 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 77 transitions, 354 flow [2021-12-28 02:50:36,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-28 02:50:36,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-12-28 02:50:36,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 841 transitions. [2021-12-28 02:50:36,697 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8401598401598401 [2021-12-28 02:50:36,697 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 841 transitions. [2021-12-28 02:50:36,697 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 841 transitions. [2021-12-28 02:50:36,698 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 02:50:36,698 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 841 transitions. [2021-12-28 02:50:36,700 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 76.45454545454545) internal successors, (841), 11 states have internal predecessors, (841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:50:36,702 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 91.0) internal successors, (1092), 12 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:50:36,702 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 91.0) internal successors, (1092), 12 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:50:36,702 INFO L186 Difference]: Start difference. First operand has 104 places, 74 transitions, 248 flow. Second operand 11 states and 841 transitions. [2021-12-28 02:50:36,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 77 transitions, 354 flow [2021-12-28 02:50:36,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 77 transitions, 290 flow, removed 23 selfloop flow, removed 10 redundant places. [2021-12-28 02:50:36,703 INFO L242 Difference]: Finished difference. Result has 93 places, 0 transitions, 0 flow [2021-12-28 02:50:36,704 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=0, PETRI_PLACES=93, PETRI_TRANSITIONS=0} [2021-12-28 02:50:36,704 INFO L334 CegarLoopForPetriNet]: 83 programPoint places, 10 predicate places. [2021-12-28 02:50:36,704 INFO L470 AbstractCegarLoop]: Abstraction has has 93 places, 0 transitions, 0 flow [2021-12-28 02:50:36,705 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 75.5) internal successors, (604), 8 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:50:36,719 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2021-12-28 02:50:36,720 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 4 remaining) [2021-12-28 02:50:36,720 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (1 of 4 remaining) [2021-12-28 02:50:36,720 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION (0 of 4 remaining) [2021-12-28 02:50:36,720 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-28 02:50:36,723 INFO L732 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 02:50:36,724 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-12-28 02:50:36,725 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-28 02:50:36,727 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.12 02:50:36 BasicIcfg [2021-12-28 02:50:36,727 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-28 02:50:36,728 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-28 02:50:36,728 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-28 02:50:36,728 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-28 02:50:36,728 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 02:50:32" (3/4) ... [2021-12-28 02:50:36,730 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-12-28 02:50:36,751 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2021-12-28 02:50:36,751 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2021-12-28 02:50:36,751 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2021-12-28 02:50:36,756 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2021-12-28 02:50:36,756 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-12-28 02:50:36,757 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-12-28 02:50:36,757 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-12-28 02:50:36,796 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-28 02:50:36,797 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-28 02:50:36,797 INFO L158 Benchmark]: Toolchain (without parser) took 4728.55ms. Allocated memory was 58.7MB in the beginning and 174.1MB in the end (delta: 115.3MB). Free memory was 35.8MB in the beginning and 129.4MB in the end (delta: -93.7MB). Peak memory consumption was 24.7MB. Max. memory is 16.1GB. [2021-12-28 02:50:36,798 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 58.7MB. Free memory is still 39.7MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-28 02:50:36,798 INFO L158 Benchmark]: CACSL2BoogieTranslator took 411.21ms. Allocated memory is still 58.7MB. Free memory was 35.6MB in the beginning and 29.6MB in the end (delta: 6.0MB). Peak memory consumption was 11.5MB. Max. memory is 16.1GB. [2021-12-28 02:50:36,798 INFO L158 Benchmark]: Boogie Procedure Inliner took 54.96ms. Allocated memory is still 58.7MB. Free memory was 29.6MB in the beginning and 41.1MB in the end (delta: -11.4MB). Peak memory consumption was 3.3MB. Max. memory is 16.1GB. [2021-12-28 02:50:36,798 INFO L158 Benchmark]: Boogie Preprocessor took 32.15ms. Allocated memory is still 58.7MB. Free memory was 41.1MB in the beginning and 39.7MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-28 02:50:36,798 INFO L158 Benchmark]: RCFGBuilder took 376.72ms. Allocated memory is still 58.7MB. Free memory was 39.7MB in the beginning and 27.9MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-28 02:50:36,799 INFO L158 Benchmark]: TraceAbstraction took 3776.10ms. Allocated memory was 58.7MB in the beginning and 174.1MB in the end (delta: 115.3MB). Free memory was 27.4MB in the beginning and 132.6MB in the end (delta: -105.1MB). Peak memory consumption was 108.4MB. Max. memory is 16.1GB. [2021-12-28 02:50:36,799 INFO L158 Benchmark]: Witness Printer took 69.25ms. Allocated memory is still 174.1MB. Free memory was 132.6MB in the beginning and 129.4MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-28 02:50:36,801 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 58.7MB. Free memory is still 39.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 411.21ms. Allocated memory is still 58.7MB. Free memory was 35.6MB in the beginning and 29.6MB in the end (delta: 6.0MB). Peak memory consumption was 11.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 54.96ms. Allocated memory is still 58.7MB. Free memory was 29.6MB in the beginning and 41.1MB in the end (delta: -11.4MB). Peak memory consumption was 3.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 32.15ms. Allocated memory is still 58.7MB. Free memory was 41.1MB in the beginning and 39.7MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 376.72ms. Allocated memory is still 58.7MB. Free memory was 39.7MB in the beginning and 27.9MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 3776.10ms. Allocated memory was 58.7MB in the beginning and 174.1MB in the end (delta: 115.3MB). Free memory was 27.4MB in the beginning and 132.6MB in the end (delta: -105.1MB). Peak memory consumption was 108.4MB. Max. memory is 16.1GB. * Witness Printer took 69.25ms. Allocated memory is still 174.1MB. Free memory was 132.6MB in the beginning and 129.4MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. 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: 18]: 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, 114 locations, 4 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: 3.7s, OverallIterations: 11, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 2.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 413 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 413 mSDsluCounter, 772 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 726 mSDsCounter, 102 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 690 IncrementalHoareTripleChecker+Invalid, 792 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 102 mSolverCounterUnsat, 189 mSDtfsCounter, 690 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 146 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=614occurred in iteration=4, InterpolantAutomatonStates: 115, 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, 0.9s InterpolantComputationTime, 658 NumberOfCodeBlocks, 658 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 647 ConstructedInterpolants, 0 QuantifiedInterpolants, 2847 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 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 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-12-28 02:50:36,865 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE