./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread/triangular-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 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/triangular-1.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 b585114ab4aff9777d36c84f93f7abe0931f77338421f004296c8a8d328d3dfd --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-16 02:42:48,004 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 02:42:48,036 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 02:42:48,074 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 02:42:48,075 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 02:42:48,077 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 02:42:48,078 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 02:42:48,080 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 02:42:48,082 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 02:42:48,085 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 02:42:48,086 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 02:42:48,087 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 02:42:48,087 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 02:42:48,089 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 02:42:48,090 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 02:42:48,093 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 02:42:48,094 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 02:42:48,094 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 02:42:48,096 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 02:42:48,100 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 02:42:48,101 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 02:42:48,102 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 02:42:48,103 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 02:42:48,104 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 02:42:48,109 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 02:42:48,109 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 02:42:48,109 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 02:42:48,110 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 02:42:48,111 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 02:42:48,111 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 02:42:48,112 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 02:42:48,112 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 02:42:48,113 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 02:42:48,114 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 02:42:48,115 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 02:42:48,115 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 02:42:48,116 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 02:42:48,117 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 02:42:48,117 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 02:42:48,117 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 02:42:48,118 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 02:42:48,118 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-16 02:42:48,142 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 02:42:48,142 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 02:42:48,142 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 02:42:48,143 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 02:42:48,143 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-16 02:42:48,143 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-16 02:42:48,144 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 02:42:48,144 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 02:42:48,144 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 02:42:48,144 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 02:42:48,145 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-16 02:42:48,145 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-16 02:42:48,145 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-16 02:42:48,146 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 02:42:48,146 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-16 02:42:48,146 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-16 02:42:48,146 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-16 02:42:48,146 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-16 02:42:48,146 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-16 02:42:48,146 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 02:42:48,147 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-16 02:42:48,147 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 02:42:48,147 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 02:42:48,147 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-16 02:42:48,147 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 02:42:48,147 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 02:42:48,148 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-16 02:42:48,148 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-16 02:42:48,148 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-16 02:42:48,148 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-16 02:42:48,148 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-16 02:42:48,148 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-16 02:42:48,149 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-16 02:42:48,149 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 02:42:48,149 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b585114ab4aff9777d36c84f93f7abe0931f77338421f004296c8a8d328d3dfd [2021-12-16 02:42:48,361 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 02:42:48,379 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 02:42:48,381 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 02:42:48,382 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 02:42:48,382 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 02:42:48,383 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/triangular-1.i [2021-12-16 02:42:48,433 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/23d5aaa6c/2ad14959f68f478cbf29fa1f0d5cb1ff/FLAGd66b97365 [2021-12-16 02:42:48,841 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 02:42:48,842 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/triangular-1.i [2021-12-16 02:42:48,857 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/23d5aaa6c/2ad14959f68f478cbf29fa1f0d5cb1ff/FLAGd66b97365 [2021-12-16 02:42:48,870 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/23d5aaa6c/2ad14959f68f478cbf29fa1f0d5cb1ff [2021-12-16 02:42:48,872 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 02:42:48,874 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 02:42:48,876 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 02:42:48,876 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 02:42:48,879 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 02:42:48,879 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 02:42:48" (1/1) ... [2021-12-16 02:42:48,880 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67504e01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:42:48, skipping insertion in model container [2021-12-16 02:42:48,880 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 02:42:48" (1/1) ... [2021-12-16 02:42:48,886 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 02:42:48,923 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 02:42:49,246 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/triangular-1.i[30950,30963] [2021-12-16 02:42:49,248 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 02:42:49,253 INFO L203 MainTranslator]: Completed pre-run [2021-12-16 02:42:49,291 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/triangular-1.i[30950,30963] [2021-12-16 02:42:49,292 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 02:42:49,319 INFO L208 MainTranslator]: Completed translation [2021-12-16 02:42:49,320 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:42:49 WrapperNode [2021-12-16 02:42:49,320 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 02:42:49,320 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-16 02:42:49,321 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-16 02:42:49,321 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-16 02:42:49,325 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:42:49" (1/1) ... [2021-12-16 02:42:49,333 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:42:49" (1/1) ... [2021-12-16 02:42:49,347 INFO L137 Inliner]: procedures = 169, calls = 24, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 47 [2021-12-16 02:42:49,347 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-16 02:42:49,348 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-16 02:42:49,348 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-16 02:42:49,348 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-16 02:42:49,354 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:42:49" (1/1) ... [2021-12-16 02:42:49,354 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:42:49" (1/1) ... [2021-12-16 02:42:49,364 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:42:49" (1/1) ... [2021-12-16 02:42:49,364 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:42:49" (1/1) ... [2021-12-16 02:42:49,367 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:42:49" (1/1) ... [2021-12-16 02:42:49,369 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:42:49" (1/1) ... [2021-12-16 02:42:49,370 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:42:49" (1/1) ... [2021-12-16 02:42:49,371 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-16 02:42:49,380 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-16 02:42:49,380 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-16 02:42:49,380 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-16 02:42:49,381 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:42:49" (1/1) ... [2021-12-16 02:42:49,388 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 02:42:49,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 02:42:49,404 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) [2021-12-16 02:42:49,410 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 [2021-12-16 02:42:49,437 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2021-12-16 02:42:49,437 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2021-12-16 02:42:49,437 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2021-12-16 02:42:49,438 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2021-12-16 02:42:49,438 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-16 02:42:49,438 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-12-16 02:42:49,438 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-16 02:42:49,438 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-16 02:42:49,438 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-16 02:42:49,438 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-16 02:42:49,438 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-12-16 02:42:49,438 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-16 02:42:49,439 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-16 02:42:49,440 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-12-16 02:42:49,560 INFO L236 CfgBuilder]: Building ICFG [2021-12-16 02:42:49,561 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-16 02:42:49,662 INFO L277 CfgBuilder]: Performing block encoding [2021-12-16 02:42:49,667 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-16 02:42:49,667 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-16 02:42:49,669 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 02:42:49 BoogieIcfgContainer [2021-12-16 02:42:49,669 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-16 02:42:49,670 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-16 02:42:49,670 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-16 02:42:49,673 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-16 02:42:49,673 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 02:42:48" (1/3) ... [2021-12-16 02:42:49,673 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ffb25f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 02:42:49, skipping insertion in model container [2021-12-16 02:42:49,674 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:42:49" (2/3) ... [2021-12-16 02:42:49,674 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ffb25f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 02:42:49, skipping insertion in model container [2021-12-16 02:42:49,674 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 02:42:49" (3/3) ... [2021-12-16 02:42:49,675 INFO L111 eAbstractionObserver]: Analyzing ICFG triangular-1.i [2021-12-16 02:42:49,678 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-12-16 02:42:49,679 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-16 02:42:49,679 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-16 02:42:49,679 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-12-16 02:42:49,702 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:42:49,703 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:42:49,703 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:42:49,703 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:42:49,703 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:42:49,704 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:42:49,704 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:42:49,704 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:42:49,704 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:42:49,705 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:42:49,705 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:42:49,706 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:42:49,706 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:42:49,706 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:42:49,706 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:42:49,706 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:42:49,706 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:42:49,707 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:42:49,707 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:42:49,707 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:42:49,708 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:42:49,708 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:42:49,708 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:42:49,709 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:42:49,709 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:42:49,710 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:42:49,710 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:42:49,710 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:42:49,711 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:42:49,711 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:42:49,712 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:42:49,712 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:42:49,712 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:42:49,712 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:42:49,713 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:42:49,713 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:42:49,713 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:42:49,714 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:42:49,717 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:42:49,717 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:42:49,717 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:42:49,718 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:42:49,718 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:42:49,718 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:42:49,718 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:42:49,718 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:42:49,718 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:42:49,719 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:42:49,719 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:42:49,719 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:42:49,719 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:42:49,720 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:42:49,720 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:42:49,720 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:42:49,720 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:42:49,720 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:42:49,724 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:42:49,725 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:42:49,725 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:42:49,725 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:42:49,725 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:42:49,726 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:42:49,731 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:42:49,732 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:42:49,732 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:42:49,732 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:42:49,733 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:42:49,733 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:42:49,733 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-12-16 02:42:49,766 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-16 02:42:49,770 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 [2021-12-16 02:42:49,771 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-12-16 02:42:49,778 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 72 places, 70 transitions, 150 flow [2021-12-16 02:42:49,799 INFO L129 PetriNetUnfolder]: 5/68 cut-off events. [2021-12-16 02:42:49,799 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-12-16 02:42:49,802 INFO L84 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 68 events. 5/68 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 63 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 47. Up to 2 conditions per place. [2021-12-16 02:42:49,802 INFO L82 GeneralOperation]: Start removeDead. Operand has 72 places, 70 transitions, 150 flow [2021-12-16 02:42:49,805 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 70 places, 68 transitions, 142 flow [2021-12-16 02:42:49,814 INFO L129 PetriNetUnfolder]: 4/58 cut-off events. [2021-12-16 02:42:49,820 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-12-16 02:42:49,821 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 02:42:49,821 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] [2021-12-16 02:42:49,822 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-16 02:42:49,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:42:49,825 INFO L85 PathProgramCache]: Analyzing trace with hash 398220865, now seen corresponding path program 1 times [2021-12-16 02:42:49,830 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:42:49,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115369143] [2021-12-16 02:42:49,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:42:49,831 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:42:49,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:42:50,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:42:50,111 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:42:50,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115369143] [2021-12-16 02:42:50,112 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115369143] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:42:50,112 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:42:50,112 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-16 02:42:50,113 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844657134] [2021-12-16 02:42:50,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:42:50,119 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 02:42:50,119 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:42:50,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 02:42:50,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-16 02:42:50,148 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 70 [2021-12-16 02:42:50,152 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 68 transitions, 142 flow. Second operand has 6 states, 6 states have (on average 56.333333333333336) internal successors, (338), 6 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:42:50,152 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 02:42:50,152 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 70 [2021-12-16 02:42:50,153 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 02:42:50,294 INFO L129 PetriNetUnfolder]: 50/247 cut-off events. [2021-12-16 02:42:50,295 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-12-16 02:42:50,297 INFO L84 FinitePrefix]: Finished finitePrefix Result has 337 conditions, 247 events. 50/247 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1076 event pairs, 1 based on Foata normal form. 52/277 useless extension candidates. Maximal degree in co-relation 304. Up to 27 conditions per place. [2021-12-16 02:42:50,299 INFO L132 encePairwiseOnDemand]: 59/70 looper letters, 14 selfloop transitions, 6 changer transitions 20/85 dead transitions. [2021-12-16 02:42:50,299 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 85 transitions, 240 flow [2021-12-16 02:42:50,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-16 02:42:50,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-12-16 02:42:50,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 491 transitions. [2021-12-16 02:42:50,314 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8767857142857143 [2021-12-16 02:42:50,314 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 491 transitions. [2021-12-16 02:42:50,315 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 491 transitions. [2021-12-16 02:42:50,317 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 02:42:50,319 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 491 transitions. [2021-12-16 02:42:50,325 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 61.375) internal successors, (491), 8 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) [2021-12-16 02:42:50,329 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 70.0) internal successors, (630), 9 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:42:50,330 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 70.0) internal successors, (630), 9 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:42:50,331 INFO L186 Difference]: Start difference. First operand has 70 places, 68 transitions, 142 flow. Second operand 8 states and 491 transitions. [2021-12-16 02:42:50,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 85 transitions, 240 flow [2021-12-16 02:42:50,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 85 transitions, 238 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-12-16 02:42:50,336 INFO L242 Difference]: Finished difference. Result has 80 places, 59 transitions, 164 flow [2021-12-16 02:42:50,337 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=164, PETRI_PLACES=80, PETRI_TRANSITIONS=59} [2021-12-16 02:42:50,339 INFO L334 CegarLoopForPetriNet]: 70 programPoint places, 10 predicate places. [2021-12-16 02:42:50,340 INFO L470 AbstractCegarLoop]: Abstraction has has 80 places, 59 transitions, 164 flow [2021-12-16 02:42:50,340 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 56.333333333333336) internal successors, (338), 6 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:42:50,340 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 02:42:50,340 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] [2021-12-16 02:42:50,341 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-16 02:42:50,341 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-16 02:42:50,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:42:50,341 INFO L85 PathProgramCache]: Analyzing trace with hash 1444168350, now seen corresponding path program 1 times [2021-12-16 02:42:50,341 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:42:50,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416728215] [2021-12-16 02:42:50,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:42:50,342 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:42:50,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:42:50,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:42:50,441 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:42:50,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416728215] [2021-12-16 02:42:50,442 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416728215] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:42:50,442 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:42:50,442 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-16 02:42:50,442 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144364109] [2021-12-16 02:42:50,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:42:50,443 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 02:42:50,443 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:42:50,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 02:42:50,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-16 02:42:50,445 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 70 [2021-12-16 02:42:50,445 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 59 transitions, 164 flow. Second operand has 6 states, 6 states have (on average 56.5) internal successors, (339), 6 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:42:50,445 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 02:42:50,445 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 70 [2021-12-16 02:42:50,445 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 02:42:50,510 INFO L129 PetriNetUnfolder]: 43/212 cut-off events. [2021-12-16 02:42:50,510 INFO L130 PetriNetUnfolder]: For 212/229 co-relation queries the response was YES. [2021-12-16 02:42:50,512 INFO L84 FinitePrefix]: Finished finitePrefix Result has 455 conditions, 212 events. 43/212 cut-off events. For 212/229 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 754 event pairs, 0 based on Foata normal form. 3/194 useless extension candidates. Maximal degree in co-relation 414. Up to 40 conditions per place. [2021-12-16 02:42:50,513 INFO L132 encePairwiseOnDemand]: 64/70 looper letters, 22 selfloop transitions, 11 changer transitions 8/86 dead transitions. [2021-12-16 02:42:50,513 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 86 transitions, 414 flow [2021-12-16 02:42:50,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-16 02:42:50,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-12-16 02:42:50,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 530 transitions. [2021-12-16 02:42:50,514 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8412698412698413 [2021-12-16 02:42:50,515 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 530 transitions. [2021-12-16 02:42:50,515 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 530 transitions. [2021-12-16 02:42:50,515 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 02:42:50,515 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 530 transitions. [2021-12-16 02:42:50,516 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 58.888888888888886) internal successors, (530), 9 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:42:50,518 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 70.0) internal successors, (700), 10 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:42:50,518 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 70.0) internal successors, (700), 10 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:42:50,518 INFO L186 Difference]: Start difference. First operand has 80 places, 59 transitions, 164 flow. Second operand 9 states and 530 transitions. [2021-12-16 02:42:50,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 86 transitions, 414 flow [2021-12-16 02:42:50,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 86 transitions, 400 flow, removed 4 selfloop flow, removed 2 redundant places. [2021-12-16 02:42:50,521 INFO L242 Difference]: Finished difference. Result has 81 places, 69 transitions, 282 flow [2021-12-16 02:42:50,522 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=282, PETRI_PLACES=81, PETRI_TRANSITIONS=69} [2021-12-16 02:42:50,522 INFO L334 CegarLoopForPetriNet]: 70 programPoint places, 11 predicate places. [2021-12-16 02:42:50,522 INFO L470 AbstractCegarLoop]: Abstraction has has 81 places, 69 transitions, 282 flow [2021-12-16 02:42:50,523 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 56.5) internal successors, (339), 6 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:42:50,523 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 02:42:50,523 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] [2021-12-16 02:42:50,523 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-16 02:42:50,523 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-16 02:42:50,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:42:50,524 INFO L85 PathProgramCache]: Analyzing trace with hash -1245653052, now seen corresponding path program 2 times [2021-12-16 02:42:50,524 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:42:50,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311897965] [2021-12-16 02:42:50,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:42:50,525 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:42:50,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:42:50,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:42:50,606 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:42:50,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311897965] [2021-12-16 02:42:50,607 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311897965] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:42:50,607 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:42:50,607 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-16 02:42:50,607 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836107446] [2021-12-16 02:42:50,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:42:50,608 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 02:42:50,608 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:42:50,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 02:42:50,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-16 02:42:50,609 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 70 [2021-12-16 02:42:50,609 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 69 transitions, 282 flow. Second operand has 6 states, 6 states have (on average 56.5) internal successors, (339), 6 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:42:50,609 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 02:42:50,609 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 70 [2021-12-16 02:42:50,609 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 02:42:50,728 INFO L129 PetriNetUnfolder]: 40/229 cut-off events. [2021-12-16 02:42:50,729 INFO L130 PetriNetUnfolder]: For 699/746 co-relation queries the response was YES. [2021-12-16 02:42:50,730 INFO L84 FinitePrefix]: Finished finitePrefix Result has 588 conditions, 229 events. 40/229 cut-off events. For 699/746 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 921 event pairs, 2 based on Foata normal form. 15/220 useless extension candidates. Maximal degree in co-relation 540. Up to 38 conditions per place. [2021-12-16 02:42:50,731 INFO L132 encePairwiseOnDemand]: 64/70 looper letters, 20 selfloop transitions, 15 changer transitions 11/91 dead transitions. [2021-12-16 02:42:50,731 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 91 transitions, 601 flow [2021-12-16 02:42:50,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-16 02:42:50,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-12-16 02:42:50,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 585 transitions. [2021-12-16 02:42:50,736 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8357142857142857 [2021-12-16 02:42:50,737 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 585 transitions. [2021-12-16 02:42:50,737 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 585 transitions. [2021-12-16 02:42:50,737 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 02:42:50,737 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 585 transitions. [2021-12-16 02:42:50,738 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 58.5) internal successors, (585), 10 states have internal predecessors, (585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:42:50,740 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 70.0) internal successors, (770), 11 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:42:50,741 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 70.0) internal successors, (770), 11 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:42:50,741 INFO L186 Difference]: Start difference. First operand has 81 places, 69 transitions, 282 flow. Second operand 10 states and 585 transitions. [2021-12-16 02:42:50,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 91 transitions, 601 flow [2021-12-16 02:42:50,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 91 transitions, 549 flow, removed 26 selfloop flow, removed 3 redundant places. [2021-12-16 02:42:50,749 INFO L242 Difference]: Finished difference. Result has 91 places, 75 transitions, 377 flow [2021-12-16 02:42:50,749 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=377, PETRI_PLACES=91, PETRI_TRANSITIONS=75} [2021-12-16 02:42:50,750 INFO L334 CegarLoopForPetriNet]: 70 programPoint places, 21 predicate places. [2021-12-16 02:42:50,751 INFO L470 AbstractCegarLoop]: Abstraction has has 91 places, 75 transitions, 377 flow [2021-12-16 02:42:50,751 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 56.5) internal successors, (339), 6 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:42:50,751 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 02:42:50,751 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] [2021-12-16 02:42:50,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-16 02:42:50,752 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-16 02:42:50,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:42:50,753 INFO L85 PathProgramCache]: Analyzing trace with hash -150168411, now seen corresponding path program 1 times [2021-12-16 02:42:50,754 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:42:50,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946483183] [2021-12-16 02:42:50,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:42:50,754 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:42:50,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:42:50,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:42:50,854 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:42:50,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946483183] [2021-12-16 02:42:50,854 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946483183] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:42:50,854 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:42:50,854 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:42:50,855 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172871089] [2021-12-16 02:42:50,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:42:50,855 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:42:50,855 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:42:50,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:42:50,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:42:50,856 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 70 [2021-12-16 02:42:50,857 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 75 transitions, 377 flow. Second operand has 7 states, 7 states have (on average 56.42857142857143) internal successors, (395), 7 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:42:50,857 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 02:42:50,857 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 70 [2021-12-16 02:42:50,857 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 02:42:50,950 INFO L129 PetriNetUnfolder]: 46/266 cut-off events. [2021-12-16 02:42:50,951 INFO L130 PetriNetUnfolder]: For 1216/1259 co-relation queries the response was YES. [2021-12-16 02:42:50,952 INFO L84 FinitePrefix]: Finished finitePrefix Result has 752 conditions, 266 events. 46/266 cut-off events. For 1216/1259 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1104 event pairs, 1 based on Foata normal form. 17/257 useless extension candidates. Maximal degree in co-relation 698. Up to 44 conditions per place. [2021-12-16 02:42:50,954 INFO L132 encePairwiseOnDemand]: 63/70 looper letters, 22 selfloop transitions, 22 changer transitions 8/97 dead transitions. [2021-12-16 02:42:50,954 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 97 transitions, 755 flow [2021-12-16 02:42:50,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-16 02:42:50,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-12-16 02:42:50,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 644 transitions. [2021-12-16 02:42:50,956 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8363636363636363 [2021-12-16 02:42:50,956 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 644 transitions. [2021-12-16 02:42:50,956 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 644 transitions. [2021-12-16 02:42:50,957 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 02:42:50,957 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 644 transitions. [2021-12-16 02:42:50,958 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 58.54545454545455) internal successors, (644), 11 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:42:50,959 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 70.0) internal successors, (840), 12 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:42:50,959 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 70.0) internal successors, (840), 12 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:42:50,959 INFO L186 Difference]: Start difference. First operand has 91 places, 75 transitions, 377 flow. Second operand 11 states and 644 transitions. [2021-12-16 02:42:50,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 97 transitions, 755 flow [2021-12-16 02:42:50,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 97 transitions, 694 flow, removed 27 selfloop flow, removed 4 redundant places. [2021-12-16 02:42:50,966 INFO L242 Difference]: Finished difference. Result has 101 places, 80 transitions, 489 flow [2021-12-16 02:42:50,966 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=348, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=489, PETRI_PLACES=101, PETRI_TRANSITIONS=80} [2021-12-16 02:42:50,967 INFO L334 CegarLoopForPetriNet]: 70 programPoint places, 31 predicate places. [2021-12-16 02:42:50,968 INFO L470 AbstractCegarLoop]: Abstraction has has 101 places, 80 transitions, 489 flow [2021-12-16 02:42:50,968 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 56.42857142857143) internal successors, (395), 7 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:42:50,968 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 02:42:50,968 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] [2021-12-16 02:42:50,968 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-16 02:42:50,969 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-16 02:42:50,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:42:50,970 INFO L85 PathProgramCache]: Analyzing trace with hash -1283973881, now seen corresponding path program 2 times [2021-12-16 02:42:50,970 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:42:50,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335026460] [2021-12-16 02:42:50,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:42:50,971 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:42:50,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:42:51,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:42:51,062 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:42:51,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335026460] [2021-12-16 02:42:51,062 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335026460] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:42:51,062 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:42:51,062 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:42:51,062 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953306738] [2021-12-16 02:42:51,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:42:51,063 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:42:51,063 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:42:51,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:42:51,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:42:51,064 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 70 [2021-12-16 02:42:51,064 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 80 transitions, 489 flow. Second operand has 7 states, 7 states have (on average 56.42857142857143) internal successors, (395), 7 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:42:51,065 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 02:42:51,065 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 70 [2021-12-16 02:42:51,065 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 02:42:51,179 INFO L129 PetriNetUnfolder]: 40/237 cut-off events. [2021-12-16 02:42:51,180 INFO L130 PetriNetUnfolder]: For 1488/1553 co-relation queries the response was YES. [2021-12-16 02:42:51,180 INFO L84 FinitePrefix]: Finished finitePrefix Result has 736 conditions, 237 events. 40/237 cut-off events. For 1488/1553 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 923 event pairs, 1 based on Foata normal form. 29/243 useless extension candidates. Maximal degree in co-relation 686. Up to 43 conditions per place. [2021-12-16 02:42:51,181 INFO L132 encePairwiseOnDemand]: 63/70 looper letters, 20 selfloop transitions, 22 changer transitions 11/98 dead transitions. [2021-12-16 02:42:51,182 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 98 transitions, 875 flow [2021-12-16 02:42:51,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-16 02:42:51,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-12-16 02:42:51,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 638 transitions. [2021-12-16 02:42:51,184 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8285714285714286 [2021-12-16 02:42:51,184 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 638 transitions. [2021-12-16 02:42:51,184 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 638 transitions. [2021-12-16 02:42:51,184 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 02:42:51,184 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 638 transitions. [2021-12-16 02:42:51,186 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 58.0) internal successors, (638), 11 states have internal predecessors, (638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:42:51,187 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 70.0) internal successors, (840), 12 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:42:51,187 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 70.0) internal successors, (840), 12 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:42:51,187 INFO L186 Difference]: Start difference. First operand has 101 places, 80 transitions, 489 flow. Second operand 11 states and 638 transitions. [2021-12-16 02:42:51,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 98 transitions, 875 flow [2021-12-16 02:42:51,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 98 transitions, 787 flow, removed 25 selfloop flow, removed 8 redundant places. [2021-12-16 02:42:51,192 INFO L242 Difference]: Finished difference. Result has 105 places, 82 transitions, 540 flow [2021-12-16 02:42:51,192 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=433, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=540, PETRI_PLACES=105, PETRI_TRANSITIONS=82} [2021-12-16 02:42:51,194 INFO L334 CegarLoopForPetriNet]: 70 programPoint places, 35 predicate places. [2021-12-16 02:42:51,194 INFO L470 AbstractCegarLoop]: Abstraction has has 105 places, 82 transitions, 540 flow [2021-12-16 02:42:51,196 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 56.42857142857143) internal successors, (395), 7 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:42:51,196 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 02:42:51,197 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:42:51,197 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-16 02:42:51,197 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-16 02:42:51,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:42:51,198 INFO L85 PathProgramCache]: Analyzing trace with hash -1510725775, now seen corresponding path program 1 times [2021-12-16 02:42:51,198 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:42:51,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713230681] [2021-12-16 02:42:51,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:42:51,200 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:42:51,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:42:51,268 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:42:51,268 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:42:51,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713230681] [2021-12-16 02:42:51,269 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713230681] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 02:42:51,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1940365674] [2021-12-16 02:42:51,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:42:51,269 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 02:42:51,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 02:42:51,271 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 02:42:51,295 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-16 02:42:51,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:42:51,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-16 02:42:51,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 02:42:51,525 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:42:51,525 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 02:42:51,664 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:42:51,664 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1940365674] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 02:42:51,664 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 02:42:51,664 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 13 [2021-12-16 02:42:51,665 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512093748] [2021-12-16 02:42:51,665 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 02:42:51,666 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-16 02:42:51,666 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:42:51,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-16 02:42:51,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2021-12-16 02:42:51,668 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 70 [2021-12-16 02:42:51,668 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 82 transitions, 540 flow. Second operand has 13 states, 13 states have (on average 56.61538461538461) internal successors, (736), 13 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:42:51,669 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 02:42:51,669 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 70 [2021-12-16 02:42:51,669 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 02:42:51,911 INFO L129 PetriNetUnfolder]: 54/308 cut-off events. [2021-12-16 02:42:51,912 INFO L130 PetriNetUnfolder]: For 2220/2293 co-relation queries the response was YES. [2021-12-16 02:42:51,915 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1010 conditions, 308 events. 54/308 cut-off events. For 2220/2293 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1212 event pairs, 1 based on Foata normal form. 34/312 useless extension candidates. Maximal degree in co-relation 958. Up to 61 conditions per place. [2021-12-16 02:42:51,917 INFO L132 encePairwiseOnDemand]: 63/70 looper letters, 24 selfloop transitions, 37 changer transitions 14/120 dead transitions. [2021-12-16 02:42:51,917 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 120 transitions, 1312 flow [2021-12-16 02:42:51,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-16 02:42:51,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-12-16 02:42:51,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1159 transitions. [2021-12-16 02:42:51,920 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8278571428571428 [2021-12-16 02:42:51,920 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1159 transitions. [2021-12-16 02:42:51,920 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1159 transitions. [2021-12-16 02:42:51,921 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 02:42:51,921 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1159 transitions. [2021-12-16 02:42:51,923 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 57.95) internal successors, (1159), 20 states have internal predecessors, (1159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:42:51,925 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 70.0) internal successors, (1470), 21 states have internal predecessors, (1470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:42:51,925 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 70.0) internal successors, (1470), 21 states have internal predecessors, (1470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:42:51,925 INFO L186 Difference]: Start difference. First operand has 105 places, 82 transitions, 540 flow. Second operand 20 states and 1159 transitions. [2021-12-16 02:42:51,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 120 transitions, 1312 flow [2021-12-16 02:42:51,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 120 transitions, 1150 flow, removed 58 selfloop flow, removed 11 redundant places. [2021-12-16 02:42:51,932 INFO L242 Difference]: Finished difference. Result has 120 places, 98 transitions, 864 flow [2021-12-16 02:42:51,932 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=462, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=864, PETRI_PLACES=120, PETRI_TRANSITIONS=98} [2021-12-16 02:42:51,932 INFO L334 CegarLoopForPetriNet]: 70 programPoint places, 50 predicate places. [2021-12-16 02:42:51,933 INFO L470 AbstractCegarLoop]: Abstraction has has 120 places, 98 transitions, 864 flow [2021-12-16 02:42:51,933 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 56.61538461538461) internal successors, (736), 13 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:42:51,933 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 02:42:51,933 INFO L254 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:42:51,953 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-12-16 02:42:52,151 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-12-16 02:42:52,151 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-16 02:42:52,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:42:52,152 INFO L85 PathProgramCache]: Analyzing trace with hash 1097182698, now seen corresponding path program 1 times [2021-12-16 02:42:52,152 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:42:52,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557566399] [2021-12-16 02:42:52,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:42:52,152 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:42:52,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:42:52,249 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-16 02:42:52,250 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:42:52,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557566399] [2021-12-16 02:42:52,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557566399] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 02:42:52,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1516942153] [2021-12-16 02:42:52,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:42:52,251 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 02:42:52,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 02:42:52,252 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 02:42:52,253 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-16 02:42:52,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:42:52,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-16 02:42:52,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 02:42:52,458 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-16 02:42:52,458 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 02:42:52,742 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-16 02:42:52,743 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1516942153] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 02:42:52,743 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 02:42:52,743 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 17 [2021-12-16 02:42:52,743 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090792329] [2021-12-16 02:42:52,743 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 02:42:52,744 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-12-16 02:42:52,744 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:42:52,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-12-16 02:42:52,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2021-12-16 02:42:52,745 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 70 [2021-12-16 02:42:52,746 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 98 transitions, 864 flow. Second operand has 17 states, 17 states have (on average 56.588235294117645) internal successors, (962), 17 states have internal predecessors, (962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:42:52,746 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 02:42:52,746 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 70 [2021-12-16 02:42:52,746 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 02:42:53,000 INFO L129 PetriNetUnfolder]: 76/474 cut-off events. [2021-12-16 02:42:53,000 INFO L130 PetriNetUnfolder]: For 4159/4249 co-relation queries the response was YES. [2021-12-16 02:42:53,002 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1638 conditions, 474 events. 76/474 cut-off events. For 4159/4249 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1954 event pairs, 0 based on Foata normal form. 45/469 useless extension candidates. Maximal degree in co-relation 1577. Up to 97 conditions per place. [2021-12-16 02:42:53,005 INFO L132 encePairwiseOnDemand]: 64/70 looper letters, 56 selfloop transitions, 27 changer transitions 26/154 dead transitions. [2021-12-16 02:42:53,005 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 154 transitions, 2150 flow [2021-12-16 02:42:53,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-12-16 02:42:53,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2021-12-16 02:42:53,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 1450 transitions. [2021-12-16 02:42:53,008 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8285714285714286 [2021-12-16 02:42:53,008 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 1450 transitions. [2021-12-16 02:42:53,008 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 1450 transitions. [2021-12-16 02:42:53,009 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 02:42:53,009 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 1450 transitions. [2021-12-16 02:42:53,011 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 58.0) internal successors, (1450), 25 states have internal predecessors, (1450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:42:53,013 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 70.0) internal successors, (1820), 26 states have internal predecessors, (1820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:42:53,014 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 70.0) internal successors, (1820), 26 states have internal predecessors, (1820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:42:53,014 INFO L186 Difference]: Start difference. First operand has 120 places, 98 transitions, 864 flow. Second operand 25 states and 1450 transitions. [2021-12-16 02:42:53,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 154 transitions, 2150 flow [2021-12-16 02:42:53,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 154 transitions, 1604 flow, removed 258 selfloop flow, removed 11 redundant places. [2021-12-16 02:42:53,023 INFO L242 Difference]: Finished difference. Result has 147 places, 112 transitions, 933 flow [2021-12-16 02:42:53,023 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=608, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=933, PETRI_PLACES=147, PETRI_TRANSITIONS=112} [2021-12-16 02:42:53,024 INFO L334 CegarLoopForPetriNet]: 70 programPoint places, 77 predicate places. [2021-12-16 02:42:53,024 INFO L470 AbstractCegarLoop]: Abstraction has has 147 places, 112 transitions, 933 flow [2021-12-16 02:42:53,024 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 56.588235294117645) internal successors, (962), 17 states have internal predecessors, (962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:42:53,024 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 02:42:53,025 INFO L254 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:42:53,044 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-16 02:42:53,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-12-16 02:42:53,240 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-16 02:42:53,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:42:53,240 INFO L85 PathProgramCache]: Analyzing trace with hash 1596067542, now seen corresponding path program 2 times [2021-12-16 02:42:53,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:42:53,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150964871] [2021-12-16 02:42:53,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:42:53,240 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:42:53,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:42:53,325 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-16 02:42:53,325 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:42:53,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150964871] [2021-12-16 02:42:53,326 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150964871] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 02:42:53,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [54352964] [2021-12-16 02:42:53,326 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-16 02:42:53,326 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 02:42:53,326 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 02:42:53,327 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 02:42:53,328 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-16 02:42:53,379 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-16 02:42:53,380 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 02:42:53,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-16 02:42:53,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 02:42:53,513 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-16 02:42:53,514 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 02:42:53,752 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-16 02:42:53,752 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [54352964] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 02:42:53,753 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 02:42:53,753 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 18 [2021-12-16 02:42:53,753 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078214970] [2021-12-16 02:42:53,753 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 02:42:53,754 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-12-16 02:42:53,754 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:42:53,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-12-16 02:42:53,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2021-12-16 02:42:53,755 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 70 [2021-12-16 02:42:53,756 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 112 transitions, 933 flow. Second operand has 18 states, 18 states have (on average 56.611111111111114) internal successors, (1019), 18 states have internal predecessors, (1019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:42:53,756 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 02:42:53,756 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 70 [2021-12-16 02:42:53,756 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 02:42:54,168 INFO L129 PetriNetUnfolder]: 114/736 cut-off events. [2021-12-16 02:42:54,168 INFO L130 PetriNetUnfolder]: For 11889/12047 co-relation queries the response was YES. [2021-12-16 02:42:54,172 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2904 conditions, 736 events. 114/736 cut-off events. For 11889/12047 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 4375 event pairs, 0 based on Foata normal form. 45/706 useless extension candidates. Maximal degree in co-relation 2827. Up to 142 conditions per place. [2021-12-16 02:42:54,176 INFO L132 encePairwiseOnDemand]: 63/70 looper letters, 58 selfloop transitions, 73 changer transitions 26/202 dead transitions. [2021-12-16 02:42:54,176 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 202 transitions, 3199 flow [2021-12-16 02:42:54,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-12-16 02:42:54,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2021-12-16 02:42:54,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1851 transitions. [2021-12-16 02:42:54,180 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8263392857142857 [2021-12-16 02:42:54,180 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 1851 transitions. [2021-12-16 02:42:54,180 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 1851 transitions. [2021-12-16 02:42:54,181 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 02:42:54,182 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 1851 transitions. [2021-12-16 02:42:54,185 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 57.84375) internal successors, (1851), 32 states have internal predecessors, (1851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:42:54,188 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 70.0) internal successors, (2310), 33 states have internal predecessors, (2310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:42:54,189 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 70.0) internal successors, (2310), 33 states have internal predecessors, (2310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:42:54,189 INFO L186 Difference]: Start difference. First operand has 147 places, 112 transitions, 933 flow. Second operand 32 states and 1851 transitions. [2021-12-16 02:42:54,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 202 transitions, 3199 flow [2021-12-16 02:42:54,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 202 transitions, 2658 flow, removed 261 selfloop flow, removed 13 redundant places. [2021-12-16 02:42:54,212 INFO L242 Difference]: Finished difference. Result has 179 places, 150 transitions, 1648 flow [2021-12-16 02:42:54,212 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=780, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=1648, PETRI_PLACES=179, PETRI_TRANSITIONS=150} [2021-12-16 02:42:54,213 INFO L334 CegarLoopForPetriNet]: 70 programPoint places, 109 predicate places. [2021-12-16 02:42:54,214 INFO L470 AbstractCegarLoop]: Abstraction has has 179 places, 150 transitions, 1648 flow [2021-12-16 02:42:54,214 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 56.611111111111114) internal successors, (1019), 18 states have internal predecessors, (1019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:42:54,214 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 02:42:54,214 INFO L254 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:42:54,235 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-16 02:42:54,430 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 02:42:54,431 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-16 02:42:54,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:42:54,431 INFO L85 PathProgramCache]: Analyzing trace with hash 723168016, now seen corresponding path program 3 times [2021-12-16 02:42:54,431 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:42:54,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086508090] [2021-12-16 02:42:54,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:42:54,432 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:42:54,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:42:54,533 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-16 02:42:54,534 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:42:54,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086508090] [2021-12-16 02:42:54,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086508090] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 02:42:54,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2040645918] [2021-12-16 02:42:54,534 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-16 02:42:54,534 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 02:42:54,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 02:42:54,548 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 02:42:54,549 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-16 02:42:54,604 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-12-16 02:42:54,604 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 02:42:54,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-16 02:42:54,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 02:42:54,729 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-16 02:42:54,729 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 02:42:54,894 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-16 02:42:54,895 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2040645918] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 02:42:54,895 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 02:42:54,895 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 17 [2021-12-16 02:42:54,895 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153800585] [2021-12-16 02:42:54,895 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 02:42:54,896 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-12-16 02:42:54,896 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:42:54,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-12-16 02:42:54,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2021-12-16 02:42:54,897 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 70 [2021-12-16 02:42:54,898 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 150 transitions, 1648 flow. Second operand has 17 states, 17 states have (on average 56.64705882352941) internal successors, (963), 17 states have internal predecessors, (963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:42:54,898 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 02:42:54,898 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 70 [2021-12-16 02:42:54,898 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 02:42:55,471 INFO L129 PetriNetUnfolder]: 170/1091 cut-off events. [2021-12-16 02:42:55,471 INFO L130 PetriNetUnfolder]: For 32772/32975 co-relation queries the response was YES. [2021-12-16 02:42:55,477 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5167 conditions, 1091 events. 170/1091 cut-off events. For 32772/32975 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 7667 event pairs, 0 based on Foata normal form. 54/1034 useless extension candidates. Maximal degree in co-relation 5074. Up to 210 conditions per place. [2021-12-16 02:42:55,483 INFO L132 encePairwiseOnDemand]: 63/70 looper letters, 58 selfloop transitions, 135 changer transitions 26/264 dead transitions. [2021-12-16 02:42:55,483 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 264 transitions, 5222 flow [2021-12-16 02:42:55,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-12-16 02:42:55,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2021-12-16 02:42:55,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 2085 transitions. [2021-12-16 02:42:55,486 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8273809523809523 [2021-12-16 02:42:55,487 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 2085 transitions. [2021-12-16 02:42:55,487 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 2085 transitions. [2021-12-16 02:42:55,490 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 02:42:55,490 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 2085 transitions. [2021-12-16 02:42:55,494 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 57.916666666666664) internal successors, (2085), 36 states have internal predecessors, (2085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:42:55,499 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 70.0) internal successors, (2590), 37 states have internal predecessors, (2590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:42:55,500 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 70.0) internal successors, (2590), 37 states have internal predecessors, (2590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:42:55,500 INFO L186 Difference]: Start difference. First operand has 179 places, 150 transitions, 1648 flow. Second operand 36 states and 2085 transitions. [2021-12-16 02:42:55,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 264 transitions, 5222 flow [2021-12-16 02:42:55,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 264 transitions, 4448 flow, removed 376 selfloop flow, removed 14 redundant places. [2021-12-16 02:42:55,543 INFO L242 Difference]: Finished difference. Result has 214 places, 204 transitions, 2789 flow [2021-12-16 02:42:55,543 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=1362, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=2789, PETRI_PLACES=214, PETRI_TRANSITIONS=204} [2021-12-16 02:42:55,544 INFO L334 CegarLoopForPetriNet]: 70 programPoint places, 144 predicate places. [2021-12-16 02:42:55,544 INFO L470 AbstractCegarLoop]: Abstraction has has 214 places, 204 transitions, 2789 flow [2021-12-16 02:42:55,545 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 56.64705882352941) internal successors, (963), 17 states have internal predecessors, (963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:42:55,545 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 02:42:55,545 INFO L254 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:42:55,562 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-16 02:42:55,759 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 02:42:55,759 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-16 02:42:55,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:42:55,760 INFO L85 PathProgramCache]: Analyzing trace with hash 1406662570, now seen corresponding path program 4 times [2021-12-16 02:42:55,760 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:42:55,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645155223] [2021-12-16 02:42:55,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:42:55,760 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:42:55,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:42:55,854 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:42:55,855 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:42:55,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645155223] [2021-12-16 02:42:55,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645155223] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 02:42:55,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1113085063] [2021-12-16 02:42:55,855 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-16 02:42:55,855 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 02:42:55,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 02:42:55,872 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 02:42:55,873 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-16 02:42:55,925 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-16 02:42:55,925 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 02:42:55,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 15 conjunts are in the unsatisfiable core [2021-12-16 02:42:55,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 02:42:56,086 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:42:56,086 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 02:42:56,328 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:42:56,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1113085063] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 02:42:56,328 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 02:42:56,328 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 25 [2021-12-16 02:42:56,328 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84923990] [2021-12-16 02:42:56,329 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 02:42:56,329 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-12-16 02:42:56,329 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:42:56,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-12-16 02:42:56,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=474, Unknown=0, NotChecked=0, Total=600 [2021-12-16 02:42:56,331 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 70 [2021-12-16 02:42:56,332 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 204 transitions, 2789 flow. Second operand has 25 states, 25 states have (on average 56.32) internal successors, (1408), 25 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:42:56,332 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 02:42:56,332 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 70 [2021-12-16 02:42:56,332 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 02:42:56,877 INFO L129 PetriNetUnfolder]: 224/1436 cut-off events. [2021-12-16 02:42:56,877 INFO L130 PetriNetUnfolder]: For 71872/72025 co-relation queries the response was YES. [2021-12-16 02:42:56,886 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8097 conditions, 1436 events. 224/1436 cut-off events. For 71872/72025 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 10710 event pairs, 1 based on Foata normal form. 59/1347 useless extension candidates. Maximal degree in co-relation 7991. Up to 278 conditions per place. [2021-12-16 02:42:56,896 INFO L132 encePairwiseOnDemand]: 63/70 looper letters, 60 selfloop transitions, 186 changer transitions 17/308 dead transitions. [2021-12-16 02:42:56,896 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 308 transitions, 7394 flow [2021-12-16 02:42:56,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-12-16 02:42:56,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2021-12-16 02:42:56,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 1735 transitions. [2021-12-16 02:42:56,898 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8261904761904761 [2021-12-16 02:42:56,898 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 1735 transitions. [2021-12-16 02:42:56,898 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 1735 transitions. [2021-12-16 02:42:56,899 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 02:42:56,899 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 1735 transitions. [2021-12-16 02:42:56,901 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 57.833333333333336) internal successors, (1735), 30 states have internal predecessors, (1735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:42:56,903 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 70.0) internal successors, (2170), 31 states have internal predecessors, (2170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:42:56,904 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 70.0) internal successors, (2170), 31 states have internal predecessors, (2170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:42:56,904 INFO L186 Difference]: Start difference. First operand has 214 places, 204 transitions, 2789 flow. Second operand 30 states and 1735 transitions. [2021-12-16 02:42:56,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 308 transitions, 7394 flow [2021-12-16 02:42:56,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 308 transitions, 5154 flow, removed 1095 selfloop flow, removed 19 redundant places. [2021-12-16 02:42:57,004 INFO L242 Difference]: Finished difference. Result has 230 places, 275 transitions, 3981 flow [2021-12-16 02:42:57,005 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=2175, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=3981, PETRI_PLACES=230, PETRI_TRANSITIONS=275} [2021-12-16 02:42:57,006 INFO L334 CegarLoopForPetriNet]: 70 programPoint places, 160 predicate places. [2021-12-16 02:42:57,006 INFO L470 AbstractCegarLoop]: Abstraction has has 230 places, 275 transitions, 3981 flow [2021-12-16 02:42:57,007 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 56.32) internal successors, (1408), 25 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:42:57,007 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 02:42:57,007 INFO L254 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:42:57,041 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-12-16 02:42:57,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-12-16 02:42:57,244 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-16 02:42:57,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:42:57,245 INFO L85 PathProgramCache]: Analyzing trace with hash 1626066275, now seen corresponding path program 5 times [2021-12-16 02:42:57,245 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:42:57,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487088781] [2021-12-16 02:42:57,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:42:57,246 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:42:57,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:42:57,346 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 60 proven. 33 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-16 02:42:57,346 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:42:57,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487088781] [2021-12-16 02:42:57,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487088781] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 02:42:57,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [503545130] [2021-12-16 02:42:57,347 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-16 02:42:57,347 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 02:42:57,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 02:42:57,348 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 02:42:57,349 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-16 02:42:57,407 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2021-12-16 02:42:57,407 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 02:42:57,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-16 02:42:57,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 02:42:57,518 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-16 02:42:57,518 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 02:42:57,518 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [503545130] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:42:57,519 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-16 02:42:57,519 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [13] total 15 [2021-12-16 02:42:57,520 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743079654] [2021-12-16 02:42:57,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:42:57,521 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-16 02:42:57,521 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:42:57,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-16 02:42:57,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2021-12-16 02:42:57,522 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 70 [2021-12-16 02:42:57,523 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 275 transitions, 3981 flow. Second operand has 13 states, 13 states have (on average 59.84615384615385) internal successors, (778), 13 states have internal predecessors, (778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:42:57,523 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 02:42:57,523 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 70 [2021-12-16 02:42:57,523 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 02:42:58,242 INFO L129 PetriNetUnfolder]: 560/3461 cut-off events. [2021-12-16 02:42:58,245 INFO L130 PetriNetUnfolder]: For 67452/67536 co-relation queries the response was YES. [2021-12-16 02:42:58,269 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13233 conditions, 3461 events. 560/3461 cut-off events. For 67452/67536 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 34980 event pairs, 86 based on Foata normal form. 28/3148 useless extension candidates. Maximal degree in co-relation 13155. Up to 537 conditions per place. [2021-12-16 02:42:58,276 INFO L132 encePairwiseOnDemand]: 64/70 looper letters, 21 selfloop transitions, 20 changer transitions 137/297 dead transitions. [2021-12-16 02:42:58,276 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 297 transitions, 3803 flow [2021-12-16 02:42:58,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-16 02:42:58,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-12-16 02:42:58,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1090 transitions. [2021-12-16 02:42:58,278 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8650793650793651 [2021-12-16 02:42:58,278 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1090 transitions. [2021-12-16 02:42:58,278 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1090 transitions. [2021-12-16 02:42:58,278 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 02:42:58,278 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1090 transitions. [2021-12-16 02:42:58,280 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 60.55555555555556) internal successors, (1090), 18 states have internal predecessors, (1090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:42:58,281 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 70.0) internal successors, (1330), 19 states have internal predecessors, (1330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:42:58,282 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 70.0) internal successors, (1330), 19 states have internal predecessors, (1330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:42:58,282 INFO L186 Difference]: Start difference. First operand has 230 places, 275 transitions, 3981 flow. Second operand 18 states and 1090 transitions. [2021-12-16 02:42:58,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 297 transitions, 3803 flow [2021-12-16 02:42:58,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 297 transitions, 3257 flow, removed 244 selfloop flow, removed 15 redundant places. [2021-12-16 02:42:58,420 INFO L242 Difference]: Finished difference. Result has 226 places, 143 transitions, 1215 flow [2021-12-16 02:42:58,420 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=3061, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1215, PETRI_PLACES=226, PETRI_TRANSITIONS=143} [2021-12-16 02:42:58,421 INFO L334 CegarLoopForPetriNet]: 70 programPoint places, 156 predicate places. [2021-12-16 02:42:58,421 INFO L470 AbstractCegarLoop]: Abstraction has has 226 places, 143 transitions, 1215 flow [2021-12-16 02:42:58,421 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 59.84615384615385) internal successors, (778), 13 states have internal predecessors, (778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:42:58,421 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 02:42:58,422 INFO L254 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:42:58,438 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-16 02:42:58,638 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 02:42:58,638 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-16 02:42:58,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:42:58,639 INFO L85 PathProgramCache]: Analyzing trace with hash -1584022840, now seen corresponding path program 6 times [2021-12-16 02:42:58,639 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:42:58,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871735345] [2021-12-16 02:42:58,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:42:58,639 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:42:58,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:42:58,732 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 66 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:42:58,733 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:42:58,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871735345] [2021-12-16 02:42:58,733 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871735345] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 02:42:58,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1275444178] [2021-12-16 02:42:58,733 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-16 02:42:58,733 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 02:42:58,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 02:42:58,735 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 02:42:58,737 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-16 02:42:58,798 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-12-16 02:42:58,798 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 02:42:58,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-16 02:42:58,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 02:42:58,971 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:42:58,971 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 02:42:58,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1275444178] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:42:58,972 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-16 02:42:58,972 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [13] total 15 [2021-12-16 02:42:58,972 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882738065] [2021-12-16 02:42:58,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:42:58,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-16 02:42:58,973 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:42:58,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-16 02:42:58,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2021-12-16 02:42:58,974 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 70 [2021-12-16 02:42:58,975 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 143 transitions, 1215 flow. Second operand has 13 states, 13 states have (on average 59.84615384615385) internal successors, (778), 13 states have internal predecessors, (778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:42:58,975 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 02:42:58,975 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 70 [2021-12-16 02:42:58,975 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 02:42:59,463 INFO L129 PetriNetUnfolder]: 574/2856 cut-off events. [2021-12-16 02:42:59,463 INFO L130 PetriNetUnfolder]: For 35896/35942 co-relation queries the response was YES. [2021-12-16 02:42:59,485 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10810 conditions, 2856 events. 574/2856 cut-off events. For 35896/35942 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 27535 event pairs, 88 based on Foata normal form. 43/2744 useless extension candidates. Maximal degree in co-relation 10738. Up to 395 conditions per place. [2021-12-16 02:42:59,489 INFO L132 encePairwiseOnDemand]: 64/70 looper letters, 0 selfloop transitions, 0 changer transitions 157/157 dead transitions. [2021-12-16 02:42:59,489 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 157 transitions, 1205 flow [2021-12-16 02:42:59,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-16 02:42:59,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-12-16 02:42:59,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1074 transitions. [2021-12-16 02:42:59,490 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8523809523809524 [2021-12-16 02:42:59,490 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1074 transitions. [2021-12-16 02:42:59,490 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1074 transitions. [2021-12-16 02:42:59,491 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 02:42:59,491 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1074 transitions. [2021-12-16 02:42:59,492 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 59.666666666666664) internal successors, (1074), 18 states have internal predecessors, (1074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:42:59,494 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 70.0) internal successors, (1330), 19 states have internal predecessors, (1330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:42:59,494 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 70.0) internal successors, (1330), 19 states have internal predecessors, (1330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:42:59,494 INFO L186 Difference]: Start difference. First operand has 226 places, 143 transitions, 1215 flow. Second operand 18 states and 1074 transitions. [2021-12-16 02:42:59,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 157 transitions, 1205 flow [2021-12-16 02:42:59,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 157 transitions, 897 flow, removed 41 selfloop flow, removed 48 redundant places. [2021-12-16 02:42:59,585 INFO L242 Difference]: Finished difference. Result has 169 places, 0 transitions, 0 flow [2021-12-16 02:42:59,586 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=797, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=0, PETRI_PLACES=169, PETRI_TRANSITIONS=0} [2021-12-16 02:42:59,586 INFO L334 CegarLoopForPetriNet]: 70 programPoint places, 99 predicate places. [2021-12-16 02:42:59,586 INFO L470 AbstractCegarLoop]: Abstraction has has 169 places, 0 transitions, 0 flow [2021-12-16 02:42:59,587 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 59.84615384615385) internal successors, (778), 13 states have internal predecessors, (778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:42:59,588 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2021-12-16 02:42:59,589 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2021-12-16 02:42:59,589 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2021-12-16 02:42:59,617 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-12-16 02:42:59,789 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 02:42:59,792 INFO L732 BasicCegarLoop]: Path program histogram: [6, 2, 2, 1, 1] [2021-12-16 02:42:59,794 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-12-16 02:42:59,794 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-16 02:42:59,796 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 02:42:59 BasicIcfg [2021-12-16 02:42:59,796 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-16 02:42:59,796 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-16 02:42:59,796 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-16 02:42:59,797 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-16 02:42:59,797 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 02:42:49" (3/4) ... [2021-12-16 02:42:59,798 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-12-16 02:42:59,802 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure t1 [2021-12-16 02:42:59,802 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure t2 [2021-12-16 02:42:59,804 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2021-12-16 02:42:59,805 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-12-16 02:42:59,805 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-12-16 02:42:59,805 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-12-16 02:42:59,822 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-16 02:42:59,822 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-16 02:42:59,823 INFO L158 Benchmark]: Toolchain (without parser) took 10949.37ms. Allocated memory was 111.1MB in the beginning and 348.1MB in the end (delta: 237.0MB). Free memory was 72.0MB in the beginning and 216.8MB in the end (delta: -144.8MB). Peak memory consumption was 91.9MB. Max. memory is 16.1GB. [2021-12-16 02:42:59,823 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 111.1MB. Free memory is still 90.0MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-16 02:42:59,823 INFO L158 Benchmark]: CACSL2BoogieTranslator took 444.19ms. Allocated memory is still 111.1MB. Free memory was 71.8MB in the beginning and 76.2MB in the end (delta: -4.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-16 02:42:59,823 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.10ms. Allocated memory is still 111.1MB. Free memory was 76.2MB in the beginning and 74.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-16 02:42:59,824 INFO L158 Benchmark]: Boogie Preprocessor took 30.90ms. Allocated memory is still 111.1MB. Free memory was 74.5MB in the beginning and 73.2MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-16 02:42:59,824 INFO L158 Benchmark]: RCFGBuilder took 289.18ms. Allocated memory is still 111.1MB. Free memory was 73.2MB in the beginning and 61.6MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-16 02:42:59,824 INFO L158 Benchmark]: TraceAbstraction took 10125.80ms. Allocated memory was 111.1MB in the beginning and 348.1MB in the end (delta: 237.0MB). Free memory was 61.1MB in the beginning and 218.9MB in the end (delta: -157.7MB). Peak memory consumption was 197.0MB. Max. memory is 16.1GB. [2021-12-16 02:42:59,824 INFO L158 Benchmark]: Witness Printer took 26.12ms. Allocated memory is still 348.1MB. Free memory was 218.9MB in the beginning and 216.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-16 02:42:59,825 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 111.1MB. Free memory is still 90.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 444.19ms. Allocated memory is still 111.1MB. Free memory was 71.8MB in the beginning and 76.2MB in the end (delta: -4.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 27.10ms. Allocated memory is still 111.1MB. Free memory was 76.2MB in the beginning and 74.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 30.90ms. Allocated memory is still 111.1MB. Free memory was 74.5MB in the beginning and 73.2MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 289.18ms. Allocated memory is still 111.1MB. Free memory was 73.2MB in the beginning and 61.6MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 10125.80ms. Allocated memory was 111.1MB in the beginning and 348.1MB in the end (delta: 237.0MB). Free memory was 61.1MB in the beginning and 218.9MB in the end (delta: -157.7MB). Peak memory consumption was 197.0MB. Max. memory is 16.1GB. * Witness Printer took 26.12ms. Allocated memory is still 348.1MB. Free memory was 218.9MB in the beginning and 216.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 722]: 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 5 procedures, 88 locations, 3 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: 10.0s, OverallIterations: 12, TraceHistogramMax: 6, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 4.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 405 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 405 mSDsluCounter, 172 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 235 mSDsCounter, 425 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1313 IncrementalHoareTripleChecker+Invalid, 1738 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 425 mSolverCounterUnsat, 55 mSDtfsCounter, 1313 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1068 GetRequests, 777 SyntacticMatches, 9 SemanticMatches, 282 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2107 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3981occurred in iteration=10, InterpolantAutomatonStates: 228, 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: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.1s InterpolantComputationTime, 1181 NumberOfCodeBlocks, 1181 NumberOfCodeBlocksAsserted, 34 NumberOfCheckSat, 1472 ConstructedInterpolants, 0 QuantifiedInterpolants, 4748 SizeOfPredicates, 52 NumberOfNonLiveVariables, 1200 ConjunctsInSsa, 81 ConjunctsInUnsatCore, 24 InterpolantComputations, 7 PerfectInterpolantSequences, 372/782 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! [2021-12-16 02:42:59,861 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