./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe031_tso.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-wmm/safe031_tso.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 26b6897a83c9df9076ea7ea4c612ce46453382fa627c0d6af54da2d169befd96 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-17 22:22:55,305 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-17 22:22:55,307 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-17 22:22:55,338 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-17 22:22:55,343 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-17 22:22:55,344 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-17 22:22:55,347 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-17 22:22:55,351 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-17 22:22:55,354 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-17 22:22:55,355 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-17 22:22:55,356 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-17 22:22:55,357 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-17 22:22:55,359 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-17 22:22:55,361 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-17 22:22:55,363 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-17 22:22:55,364 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-17 22:22:55,366 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-17 22:22:55,367 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-17 22:22:55,372 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-17 22:22:55,379 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-17 22:22:55,381 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-17 22:22:55,382 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-17 22:22:55,384 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-17 22:22:55,385 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-17 22:22:55,387 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-17 22:22:55,390 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-17 22:22:55,390 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-17 22:22:55,391 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-17 22:22:55,392 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-17 22:22:55,393 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-17 22:22:55,393 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-17 22:22:55,394 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-17 22:22:55,395 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-17 22:22:55,396 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-17 22:22:55,397 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-17 22:22:55,398 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-17 22:22:55,399 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-17 22:22:55,399 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-17 22:22:55,399 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-17 22:22:55,400 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-17 22:22:55,400 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-17 22:22:55,401 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-17 22:22:55,431 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-17 22:22:55,437 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-17 22:22:55,437 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-17 22:22:55,437 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-17 22:22:55,438 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-17 22:22:55,439 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-17 22:22:55,439 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-17 22:22:55,440 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-17 22:22:55,440 INFO L138 SettingsManager]: * Use SBE=true [2021-12-17 22:22:55,440 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-17 22:22:55,441 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-17 22:22:55,441 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-17 22:22:55,442 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-17 22:22:55,442 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-17 22:22:55,442 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-17 22:22:55,442 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-17 22:22:55,442 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-17 22:22:55,443 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-17 22:22:55,443 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-17 22:22:55,443 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-17 22:22:55,443 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-17 22:22:55,443 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-17 22:22:55,444 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-17 22:22:55,444 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-17 22:22:55,444 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 22:22:55,444 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-17 22:22:55,444 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-17 22:22:55,445 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-17 22:22:55,445 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-17 22:22:55,445 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-17 22:22:55,445 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-17 22:22:55,445 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-17 22:22:55,446 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-17 22:22:55,446 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-17 22:22:55,446 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 26b6897a83c9df9076ea7ea4c612ce46453382fa627c0d6af54da2d169befd96 [2021-12-17 22:22:55,638 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-17 22:22:55,656 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-17 22:22:55,658 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-17 22:22:55,659 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-17 22:22:55,660 INFO L275 PluginConnector]: CDTParser initialized [2021-12-17 22:22:55,661 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe031_tso.i [2021-12-17 22:22:55,732 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f954f381/ff557de7f0c74ccb85e304070b29a7e1/FLAG909c54a5a [2021-12-17 22:22:56,184 INFO L306 CDTParser]: Found 1 translation units. [2021-12-17 22:22:56,185 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe031_tso.i [2021-12-17 22:22:56,203 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f954f381/ff557de7f0c74ccb85e304070b29a7e1/FLAG909c54a5a [2021-12-17 22:22:56,218 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f954f381/ff557de7f0c74ccb85e304070b29a7e1 [2021-12-17 22:22:56,220 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-17 22:22:56,222 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-17 22:22:56,223 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-17 22:22:56,223 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-17 22:22:56,226 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-17 22:22:56,227 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 10:22:56" (1/1) ... [2021-12-17 22:22:56,228 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c1a03b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:22:56, skipping insertion in model container [2021-12-17 22:22:56,228 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 10:22:56" (1/1) ... [2021-12-17 22:22:56,233 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-17 22:22:56,289 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-17 22:22:56,439 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe031_tso.i[945,958] [2021-12-17 22:22:56,605 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 22:22:56,612 INFO L203 MainTranslator]: Completed pre-run [2021-12-17 22:22:56,626 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe031_tso.i[945,958] [2021-12-17 22:22:56,664 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 22:22:56,706 INFO L208 MainTranslator]: Completed translation [2021-12-17 22:22:56,707 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:22:56 WrapperNode [2021-12-17 22:22:56,707 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-17 22:22:56,708 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-17 22:22:56,709 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-17 22:22:56,709 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-17 22:22:56,715 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:22:56" (1/1) ... [2021-12-17 22:22:56,745 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:22:56" (1/1) ... [2021-12-17 22:22:56,769 INFO L137 Inliner]: procedures = 176, calls = 55, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 70 [2021-12-17 22:22:56,769 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-17 22:22:56,770 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-17 22:22:56,770 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-17 22:22:56,771 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-17 22:22:56,777 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:22:56" (1/1) ... [2021-12-17 22:22:56,778 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:22:56" (1/1) ... [2021-12-17 22:22:56,790 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:22:56" (1/1) ... [2021-12-17 22:22:56,795 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:22:56" (1/1) ... [2021-12-17 22:22:56,799 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:22:56" (1/1) ... [2021-12-17 22:22:56,810 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:22:56" (1/1) ... [2021-12-17 22:22:56,811 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:22:56" (1/1) ... [2021-12-17 22:22:56,813 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-17 22:22:56,819 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-17 22:22:56,819 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-17 22:22:56,819 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-17 22:22:56,820 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:22:56" (1/1) ... [2021-12-17 22:22:56,827 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 22:22:56,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 22:22:56,848 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) [2021-12-17 22:22:56,862 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 [2021-12-17 22:22:56,884 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-17 22:22:56,884 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-12-17 22:22:56,884 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-17 22:22:56,884 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-17 22:22:56,884 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-17 22:22:56,884 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-12-17 22:22:56,885 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-12-17 22:22:56,885 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-12-17 22:22:56,885 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-12-17 22:22:56,885 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-12-17 22:22:56,885 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-12-17 22:22:56,885 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-17 22:22:56,885 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-12-17 22:22:56,886 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-17 22:22:56,886 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-17 22:22:56,887 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-12-17 22:22:56,984 INFO L236 CfgBuilder]: Building ICFG [2021-12-17 22:22:56,985 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-17 22:22:57,185 INFO L277 CfgBuilder]: Performing block encoding [2021-12-17 22:22:57,191 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-17 22:22:57,191 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-17 22:22:57,193 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 10:22:57 BoogieIcfgContainer [2021-12-17 22:22:57,193 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-17 22:22:57,209 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-17 22:22:57,209 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-17 22:22:57,212 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-17 22:22:57,213 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 10:22:56" (1/3) ... [2021-12-17 22:22:57,214 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a707688 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 10:22:57, skipping insertion in model container [2021-12-17 22:22:57,214 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:22:56" (2/3) ... [2021-12-17 22:22:57,214 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a707688 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 10:22:57, skipping insertion in model container [2021-12-17 22:22:57,215 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 10:22:57" (3/3) ... [2021-12-17 22:22:57,216 INFO L111 eAbstractionObserver]: Analyzing ICFG safe031_tso.i [2021-12-17 22:22:57,221 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-12-17 22:22:57,221 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-17 22:22:57,221 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-17 22:22:57,221 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-12-17 22:22:57,256 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:22:57,256 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:22:57,256 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:22:57,256 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:22:57,257 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:22:57,257 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:22:57,257 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:22:57,257 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:22:57,257 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:22:57,258 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:22:57,258 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:22:57,258 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:22:57,258 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:22:57,259 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:22:57,259 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:22:57,259 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:22:57,259 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:22:57,259 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:22:57,259 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:22:57,260 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:22:57,260 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:22:57,260 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:22:57,260 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:22:57,260 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:22:57,261 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:22:57,261 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:22:57,261 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:22:57,261 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:22:57,262 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:22:57,262 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:22:57,262 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:22:57,262 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:22:57,262 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:22:57,263 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:22:57,263 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:22:57,263 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:22:57,266 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:22:57,266 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:22:57,266 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:22:57,266 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:22:57,269 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:22:57,270 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:22:57,270 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:22:57,270 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:22:57,271 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:22:57,271 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:22:57,271 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:22:57,272 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:22:57,272 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-12-17 22:22:57,312 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-17 22:22:57,320 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 [2021-12-17 22:22:57,327 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-12-17 22:22:57,336 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 99 places, 91 transitions, 197 flow [2021-12-17 22:22:57,371 INFO L129 PetriNetUnfolder]: 2/88 cut-off events. [2021-12-17 22:22:57,372 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-12-17 22:22:57,375 INFO L84 FinitePrefix]: Finished finitePrefix Result has 98 conditions, 88 events. 2/88 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/85 useless extension candidates. Maximal degree in co-relation 68. Up to 2 conditions per place. [2021-12-17 22:22:57,375 INFO L82 GeneralOperation]: Start removeDead. Operand has 99 places, 91 transitions, 197 flow [2021-12-17 22:22:57,379 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 83 places, 74 transitions, 157 flow [2021-12-17 22:22:57,397 INFO L129 PetriNetUnfolder]: 1/73 cut-off events. [2021-12-17 22:22:57,397 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-12-17 22:22:57,397 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:22:57,398 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:22:57,399 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-17 22:22:57,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:22:57,404 INFO L85 PathProgramCache]: Analyzing trace with hash -1079717748, now seen corresponding path program 1 times [2021-12-17 22:22:57,411 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:22:57,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332677231] [2021-12-17 22:22:57,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:22:57,412 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:22:57,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:22:57,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:22:57,812 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:22:57,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332677231] [2021-12-17 22:22:57,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332677231] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:22:57,814 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:22:57,814 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 22:22:57,815 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369060081] [2021-12-17 22:22:57,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:22:57,823 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 22:22:57,823 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:22:57,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 22:22:57,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-17 22:22:57,851 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 91 [2021-12-17 22:22:57,855 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 74 transitions, 157 flow. Second operand has 6 states, 6 states have (on average 72.0) internal successors, (432), 6 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:22:57,855 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:22:57,855 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 91 [2021-12-17 22:22:57,856 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:22:58,239 INFO L129 PetriNetUnfolder]: 384/1032 cut-off events. [2021-12-17 22:22:58,239 INFO L130 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2021-12-17 22:22:58,250 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1720 conditions, 1032 events. 384/1032 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 6935 event pairs, 83 based on Foata normal form. 31/1028 useless extension candidates. Maximal degree in co-relation 1684. Up to 216 conditions per place. [2021-12-17 22:22:58,258 INFO L132 encePairwiseOnDemand]: 80/91 looper letters, 22 selfloop transitions, 6 changer transitions 37/121 dead transitions. [2021-12-17 22:22:58,258 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 121 transitions, 387 flow [2021-12-17 22:22:58,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-17 22:22:58,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-12-17 22:22:58,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 699 transitions. [2021-12-17 22:22:58,283 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8534798534798534 [2021-12-17 22:22:58,284 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 699 transitions. [2021-12-17 22:22:58,285 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 699 transitions. [2021-12-17 22:22:58,287 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:22:58,290 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 699 transitions. [2021-12-17 22:22:58,295 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 77.66666666666667) internal successors, (699), 9 states have internal predecessors, (699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:22:58,307 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 91.0) internal successors, (910), 10 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:22:58,308 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 91.0) internal successors, (910), 10 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:22:58,310 INFO L186 Difference]: Start difference. First operand has 83 places, 74 transitions, 157 flow. Second operand 9 states and 699 transitions. [2021-12-17 22:22:58,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 121 transitions, 387 flow [2021-12-17 22:22:58,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 121 transitions, 382 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-12-17 22:22:58,317 INFO L242 Difference]: Finished difference. Result has 96 places, 78 transitions, 240 flow [2021-12-17 22:22:58,319 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=240, PETRI_PLACES=96, PETRI_TRANSITIONS=78} [2021-12-17 22:22:58,322 INFO L334 CegarLoopForPetriNet]: 83 programPoint places, 13 predicate places. [2021-12-17 22:22:58,322 INFO L470 AbstractCegarLoop]: Abstraction has has 96 places, 78 transitions, 240 flow [2021-12-17 22:22:58,323 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 72.0) internal successors, (432), 6 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:22:58,323 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:22:58,323 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:22:58,323 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-17 22:22:58,324 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-17 22:22:58,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:22:58,324 INFO L85 PathProgramCache]: Analyzing trace with hash -482584883, now seen corresponding path program 1 times [2021-12-17 22:22:58,325 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:22:58,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276441873] [2021-12-17 22:22:58,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:22:58,325 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:22:58,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:22:58,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:22:58,484 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:22:58,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276441873] [2021-12-17 22:22:58,484 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276441873] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:22:58,485 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:22:58,485 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 22:22:58,485 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621465935] [2021-12-17 22:22:58,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:22:58,486 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 22:22:58,486 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:22:58,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 22:22:58,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-17 22:22:58,488 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 91 [2021-12-17 22:22:58,489 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 78 transitions, 240 flow. Second operand has 6 states, 6 states have (on average 76.66666666666667) internal successors, (460), 6 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:22:58,489 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:22:58,489 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 91 [2021-12-17 22:22:58,489 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:22:58,671 INFO L129 PetriNetUnfolder]: 174/645 cut-off events. [2021-12-17 22:22:58,671 INFO L130 PetriNetUnfolder]: For 1231/1438 co-relation queries the response was YES. [2021-12-17 22:22:58,674 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1780 conditions, 645 events. 174/645 cut-off events. For 1231/1438 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 4412 event pairs, 52 based on Foata normal form. 37/640 useless extension candidates. Maximal degree in co-relation 1739. Up to 145 conditions per place. [2021-12-17 22:22:58,678 INFO L132 encePairwiseOnDemand]: 84/91 looper letters, 14 selfloop transitions, 5 changer transitions 25/108 dead transitions. [2021-12-17 22:22:58,678 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 108 transitions, 540 flow [2021-12-17 22:22:58,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-17 22:22:58,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-12-17 22:22:58,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 711 transitions. [2021-12-17 22:22:58,681 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8681318681318682 [2021-12-17 22:22:58,681 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 711 transitions. [2021-12-17 22:22:58,681 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 711 transitions. [2021-12-17 22:22:58,682 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:22:58,682 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 711 transitions. [2021-12-17 22:22:58,683 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 79.0) internal successors, (711), 9 states have internal predecessors, (711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:22:58,685 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 91.0) internal successors, (910), 10 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:22:58,686 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 91.0) internal successors, (910), 10 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:22:58,686 INFO L186 Difference]: Start difference. First operand has 96 places, 78 transitions, 240 flow. Second operand 9 states and 711 transitions. [2021-12-17 22:22:58,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 108 transitions, 540 flow [2021-12-17 22:22:58,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 108 transitions, 506 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-12-17 22:22:58,698 INFO L242 Difference]: Finished difference. Result has 103 places, 82 transitions, 305 flow [2021-12-17 22:22:58,699 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=305, PETRI_PLACES=103, PETRI_TRANSITIONS=82} [2021-12-17 22:22:58,700 INFO L334 CegarLoopForPetriNet]: 83 programPoint places, 20 predicate places. [2021-12-17 22:22:58,700 INFO L470 AbstractCegarLoop]: Abstraction has has 103 places, 82 transitions, 305 flow [2021-12-17 22:22:58,700 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 76.66666666666667) internal successors, (460), 6 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:22:58,700 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:22:58,701 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:22:58,701 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-17 22:22:58,701 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-17 22:22:58,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:22:58,704 INFO L85 PathProgramCache]: Analyzing trace with hash 1387040811, now seen corresponding path program 1 times [2021-12-17 22:22:58,704 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:22:58,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646991017] [2021-12-17 22:22:58,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:22:58,704 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:22:58,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:22:58,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:22:58,854 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:22:58,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646991017] [2021-12-17 22:22:58,854 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646991017] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:22:58,855 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:22:58,855 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 22:22:58,855 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724435332] [2021-12-17 22:22:58,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:22:58,856 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 22:22:58,857 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:22:58,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 22:22:58,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-17 22:22:58,859 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 91 [2021-12-17 22:22:58,860 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 82 transitions, 305 flow. Second operand has 6 states, 6 states have (on average 76.66666666666667) internal successors, (460), 6 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:22:58,861 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:22:58,861 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 91 [2021-12-17 22:22:58,861 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:22:59,054 INFO L129 PetriNetUnfolder]: 181/649 cut-off events. [2021-12-17 22:22:59,054 INFO L130 PetriNetUnfolder]: For 2227/2366 co-relation queries the response was YES. [2021-12-17 22:22:59,058 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2045 conditions, 649 events. 181/649 cut-off events. For 2227/2366 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 4096 event pairs, 54 based on Foata normal form. 25/644 useless extension candidates. Maximal degree in co-relation 1997. Up to 137 conditions per place. [2021-12-17 22:22:59,061 INFO L132 encePairwiseOnDemand]: 84/91 looper letters, 14 selfloop transitions, 5 changer transitions 28/115 dead transitions. [2021-12-17 22:22:59,061 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 115 transitions, 613 flow [2021-12-17 22:22:59,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-17 22:22:59,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-12-17 22:22:59,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 712 transitions. [2021-12-17 22:22:59,065 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8693528693528694 [2021-12-17 22:22:59,065 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 712 transitions. [2021-12-17 22:22:59,065 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 712 transitions. [2021-12-17 22:22:59,066 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:22:59,066 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 712 transitions. [2021-12-17 22:22:59,068 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 79.11111111111111) internal successors, (712), 9 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:22:59,070 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 91.0) internal successors, (910), 10 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:22:59,071 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 91.0) internal successors, (910), 10 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:22:59,071 INFO L186 Difference]: Start difference. First operand has 103 places, 82 transitions, 305 flow. Second operand 9 states and 712 transitions. [2021-12-17 22:22:59,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 115 transitions, 613 flow [2021-12-17 22:22:59,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 115 transitions, 580 flow, removed 14 selfloop flow, removed 4 redundant places. [2021-12-17 22:22:59,083 INFO L242 Difference]: Finished difference. Result has 108 places, 85 transitions, 357 flow [2021-12-17 22:22:59,083 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=357, PETRI_PLACES=108, PETRI_TRANSITIONS=85} [2021-12-17 22:22:59,085 INFO L334 CegarLoopForPetriNet]: 83 programPoint places, 25 predicate places. [2021-12-17 22:22:59,086 INFO L470 AbstractCegarLoop]: Abstraction has has 108 places, 85 transitions, 357 flow [2021-12-17 22:22:59,086 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 76.66666666666667) internal successors, (460), 6 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:22:59,086 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:22:59,087 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:22:59,088 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-17 22:22:59,088 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-17 22:22:59,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:22:59,090 INFO L85 PathProgramCache]: Analyzing trace with hash -1893875314, now seen corresponding path program 1 times [2021-12-17 22:22:59,090 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:22:59,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992472439] [2021-12-17 22:22:59,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:22:59,091 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:22:59,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:22:59,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:22:59,238 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:22:59,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992472439] [2021-12-17 22:22:59,239 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992472439] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:22:59,239 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:22:59,240 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 22:22:59,240 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999058348] [2021-12-17 22:22:59,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:22:59,240 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 22:22:59,241 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:22:59,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 22:22:59,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-17 22:22:59,245 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 91 [2021-12-17 22:22:59,246 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 85 transitions, 357 flow. Second operand has 6 states, 6 states have (on average 75.66666666666667) internal successors, (454), 6 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:22:59,246 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:22:59,246 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 91 [2021-12-17 22:22:59,246 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:22:59,523 INFO L129 PetriNetUnfolder]: 540/1468 cut-off events. [2021-12-17 22:22:59,523 INFO L130 PetriNetUnfolder]: For 2245/2338 co-relation queries the response was YES. [2021-12-17 22:22:59,532 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3560 conditions, 1468 events. 540/1468 cut-off events. For 2245/2338 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 11502 event pairs, 39 based on Foata normal form. 2/1329 useless extension candidates. Maximal degree in co-relation 3507. Up to 355 conditions per place. [2021-12-17 22:22:59,539 INFO L132 encePairwiseOnDemand]: 81/91 looper letters, 29 selfloop transitions, 17 changer transitions 0/117 dead transitions. [2021-12-17 22:22:59,539 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 117 transitions, 517 flow [2021-12-17 22:22:59,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-17 22:22:59,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-12-17 22:22:59,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 788 transitions. [2021-12-17 22:22:59,543 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.865934065934066 [2021-12-17 22:22:59,543 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 788 transitions. [2021-12-17 22:22:59,543 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 788 transitions. [2021-12-17 22:22:59,544 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:22:59,544 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 788 transitions. [2021-12-17 22:22:59,546 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 78.8) internal successors, (788), 10 states have internal predecessors, (788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:22:59,547 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 91.0) internal successors, (1001), 11 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:22:59,548 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 91.0) internal successors, (1001), 11 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:22:59,548 INFO L186 Difference]: Start difference. First operand has 108 places, 85 transitions, 357 flow. Second operand 10 states and 788 transitions. [2021-12-17 22:22:59,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 117 transitions, 517 flow [2021-12-17 22:22:59,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 117 transitions, 490 flow, removed 11 selfloop flow, removed 4 redundant places. [2021-12-17 22:22:59,560 INFO L242 Difference]: Finished difference. Result has 113 places, 100 transitions, 450 flow [2021-12-17 22:22:59,560 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=330, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=450, PETRI_PLACES=113, PETRI_TRANSITIONS=100} [2021-12-17 22:22:59,561 INFO L334 CegarLoopForPetriNet]: 83 programPoint places, 30 predicate places. [2021-12-17 22:22:59,561 INFO L470 AbstractCegarLoop]: Abstraction has has 113 places, 100 transitions, 450 flow [2021-12-17 22:22:59,562 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 75.66666666666667) internal successors, (454), 6 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:22:59,562 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:22:59,562 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:22:59,562 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-17 22:22:59,563 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-17 22:22:59,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:22:59,564 INFO L85 PathProgramCache]: Analyzing trace with hash -934647985, now seen corresponding path program 1 times [2021-12-17 22:22:59,564 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:22:59,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801255730] [2021-12-17 22:22:59,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:22:59,565 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:22:59,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:22:59,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:22:59,715 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:22:59,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801255730] [2021-12-17 22:22:59,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801255730] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:22:59,716 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:22:59,716 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 22:22:59,716 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898139375] [2021-12-17 22:22:59,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:22:59,717 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 22:22:59,718 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:22:59,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 22:22:59,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 22:22:59,720 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 91 [2021-12-17 22:22:59,721 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 100 transitions, 450 flow. Second operand has 7 states, 7 states have (on average 75.57142857142857) internal successors, (529), 7 states have internal predecessors, (529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:22:59,721 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:22:59,721 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 91 [2021-12-17 22:22:59,721 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:23:00,035 INFO L129 PetriNetUnfolder]: 459/1279 cut-off events. [2021-12-17 22:23:00,036 INFO L130 PetriNetUnfolder]: For 3444/3721 co-relation queries the response was YES. [2021-12-17 22:23:00,045 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4455 conditions, 1279 events. 459/1279 cut-off events. For 3444/3721 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 10266 event pairs, 9 based on Foata normal form. 98/1276 useless extension candidates. Maximal degree in co-relation 4397. Up to 433 conditions per place. [2021-12-17 22:23:00,052 INFO L132 encePairwiseOnDemand]: 81/91 looper letters, 26 selfloop transitions, 32 changer transitions 9/138 dead transitions. [2021-12-17 22:23:00,052 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 138 transitions, 820 flow [2021-12-17 22:23:00,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-17 22:23:00,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-12-17 22:23:00,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1025 transitions. [2021-12-17 22:23:00,055 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8664412510566357 [2021-12-17 22:23:00,056 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1025 transitions. [2021-12-17 22:23:00,056 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1025 transitions. [2021-12-17 22:23:00,056 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:23:00,057 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1025 transitions. [2021-12-17 22:23:00,059 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 78.84615384615384) internal successors, (1025), 13 states have internal predecessors, (1025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:23:00,061 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 91.0) internal successors, (1274), 14 states have internal predecessors, (1274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:23:00,062 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 91.0) internal successors, (1274), 14 states have internal predecessors, (1274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:23:00,062 INFO L186 Difference]: Start difference. First operand has 113 places, 100 transitions, 450 flow. Second operand 13 states and 1025 transitions. [2021-12-17 22:23:00,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 138 transitions, 820 flow [2021-12-17 22:23:00,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 138 transitions, 812 flow, removed 3 selfloop flow, removed 1 redundant places. [2021-12-17 22:23:00,074 INFO L242 Difference]: Finished difference. Result has 128 places, 120 transitions, 685 flow [2021-12-17 22:23:00,074 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=442, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=685, PETRI_PLACES=128, PETRI_TRANSITIONS=120} [2021-12-17 22:23:00,075 INFO L334 CegarLoopForPetriNet]: 83 programPoint places, 45 predicate places. [2021-12-17 22:23:00,075 INFO L470 AbstractCegarLoop]: Abstraction has has 128 places, 120 transitions, 685 flow [2021-12-17 22:23:00,075 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 75.57142857142857) internal successors, (529), 7 states have internal predecessors, (529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:23:00,076 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:23:00,076 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:23:00,076 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-17 22:23:00,076 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-17 22:23:00,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:23:00,077 INFO L85 PathProgramCache]: Analyzing trace with hash 1939345524, now seen corresponding path program 1 times [2021-12-17 22:23:00,077 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:23:00,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773031920] [2021-12-17 22:23:00,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:23:00,078 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:23:00,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:23:00,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:23:00,167 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:23:00,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773031920] [2021-12-17 22:23:00,168 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773031920] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:23:00,168 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:23:00,168 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 22:23:00,168 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574740690] [2021-12-17 22:23:00,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:23:00,169 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 22:23:00,169 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:23:00,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 22:23:00,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 22:23:00,170 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 91 [2021-12-17 22:23:00,171 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 120 transitions, 685 flow. Second operand has 7 states, 7 states have (on average 70.42857142857143) internal successors, (493), 7 states have internal predecessors, (493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:23:00,171 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:23:00,171 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 91 [2021-12-17 22:23:00,172 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:23:00,451 INFO L129 PetriNetUnfolder]: 303/1230 cut-off events. [2021-12-17 22:23:00,451 INFO L130 PetriNetUnfolder]: For 3642/3726 co-relation queries the response was YES. [2021-12-17 22:23:00,460 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4137 conditions, 1230 events. 303/1230 cut-off events. For 3642/3726 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 10600 event pairs, 1 based on Foata normal form. 12/1170 useless extension candidates. Maximal degree in co-relation 4070. Up to 282 conditions per place. [2021-12-17 22:23:00,464 INFO L132 encePairwiseOnDemand]: 80/91 looper letters, 38 selfloop transitions, 20 changer transitions 25/167 dead transitions. [2021-12-17 22:23:00,464 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 167 transitions, 1253 flow [2021-12-17 22:23:00,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-17 22:23:00,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-12-17 22:23:00,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 814 transitions. [2021-12-17 22:23:00,467 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8131868131868132 [2021-12-17 22:23:00,467 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 814 transitions. [2021-12-17 22:23:00,467 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 814 transitions. [2021-12-17 22:23:00,468 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:23:00,468 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 814 transitions. [2021-12-17 22:23:00,470 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 74.0) internal successors, (814), 11 states have internal predecessors, (814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:23:00,472 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 91.0) internal successors, (1092), 12 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:23:00,472 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 91.0) internal successors, (1092), 12 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:23:00,472 INFO L186 Difference]: Start difference. First operand has 128 places, 120 transitions, 685 flow. Second operand 11 states and 814 transitions. [2021-12-17 22:23:00,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 167 transitions, 1253 flow [2021-12-17 22:23:00,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 167 transitions, 1117 flow, removed 55 selfloop flow, removed 9 redundant places. [2021-12-17 22:23:00,504 INFO L242 Difference]: Finished difference. Result has 138 places, 127 transitions, 737 flow [2021-12-17 22:23:00,505 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=557, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=737, PETRI_PLACES=138, PETRI_TRANSITIONS=127} [2021-12-17 22:23:00,505 INFO L334 CegarLoopForPetriNet]: 83 programPoint places, 55 predicate places. [2021-12-17 22:23:00,506 INFO L470 AbstractCegarLoop]: Abstraction has has 138 places, 127 transitions, 737 flow [2021-12-17 22:23:00,506 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 70.42857142857143) internal successors, (493), 7 states have internal predecessors, (493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:23:00,506 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:23:00,506 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:23:00,506 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-17 22:23:00,507 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-17 22:23:00,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:23:00,507 INFO L85 PathProgramCache]: Analyzing trace with hash -2098892986, now seen corresponding path program 1 times [2021-12-17 22:23:00,507 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:23:00,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954866937] [2021-12-17 22:23:00,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:23:00,508 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:23:00,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:23:00,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:23:00,572 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:23:00,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954866937] [2021-12-17 22:23:00,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954866937] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:23:00,573 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:23:00,573 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 22:23:00,573 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202468022] [2021-12-17 22:23:00,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:23:00,574 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 22:23:00,574 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:23:00,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 22:23:00,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-17 22:23:00,575 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 91 [2021-12-17 22:23:00,576 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 127 transitions, 737 flow. Second operand has 6 states, 6 states have (on average 77.0) internal successors, (462), 6 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:23:00,576 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:23:00,576 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 91 [2021-12-17 22:23:00,576 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:23:00,799 INFO L129 PetriNetUnfolder]: 318/1499 cut-off events. [2021-12-17 22:23:00,799 INFO L130 PetriNetUnfolder]: For 2442/2467 co-relation queries the response was YES. [2021-12-17 22:23:00,811 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3954 conditions, 1499 events. 318/1499 cut-off events. For 2442/2467 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 14849 event pairs, 24 based on Foata normal form. 3/1418 useless extension candidates. Maximal degree in co-relation 3886. Up to 174 conditions per place. [2021-12-17 22:23:00,815 INFO L132 encePairwiseOnDemand]: 85/91 looper letters, 17 selfloop transitions, 8 changer transitions 6/135 dead transitions. [2021-12-17 22:23:00,816 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 135 transitions, 871 flow [2021-12-17 22:23:00,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-17 22:23:00,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-12-17 22:23:00,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 472 transitions. [2021-12-17 22:23:00,818 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8644688644688645 [2021-12-17 22:23:00,818 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 472 transitions. [2021-12-17 22:23:00,818 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 472 transitions. [2021-12-17 22:23:00,819 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:23:00,819 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 472 transitions. [2021-12-17 22:23:00,820 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 78.66666666666667) internal successors, (472), 6 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:23:00,822 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 91.0) internal successors, (637), 7 states have internal predecessors, (637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:23:00,822 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 91.0) internal successors, (637), 7 states have internal predecessors, (637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:23:00,822 INFO L186 Difference]: Start difference. First operand has 138 places, 127 transitions, 737 flow. Second operand 6 states and 472 transitions. [2021-12-17 22:23:00,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 135 transitions, 871 flow [2021-12-17 22:23:00,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 135 transitions, 825 flow, removed 23 selfloop flow, removed 6 redundant places. [2021-12-17 22:23:00,844 INFO L242 Difference]: Finished difference. Result has 135 places, 125 transitions, 721 flow [2021-12-17 22:23:00,844 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=711, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=721, PETRI_PLACES=135, PETRI_TRANSITIONS=125} [2021-12-17 22:23:00,845 INFO L334 CegarLoopForPetriNet]: 83 programPoint places, 52 predicate places. [2021-12-17 22:23:00,846 INFO L470 AbstractCegarLoop]: Abstraction has has 135 places, 125 transitions, 721 flow [2021-12-17 22:23:00,846 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 77.0) internal successors, (462), 6 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:23:00,846 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:23:00,846 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 22:23:00,846 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-17 22:23:00,847 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-17 22:23:00,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:23:00,847 INFO L85 PathProgramCache]: Analyzing trace with hash -1436338908, now seen corresponding path program 2 times [2021-12-17 22:23:00,847 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:23:00,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98563407] [2021-12-17 22:23:00,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:23:00,848 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:23:00,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:23:00,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:23:00,971 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:23:00,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98563407] [2021-12-17 22:23:00,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98563407] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:23:00,971 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:23:00,971 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 22:23:00,972 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103581348] [2021-12-17 22:23:00,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:23:00,972 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-17 22:23:00,972 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:23:00,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-17 22:23:00,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-17 22:23:00,974 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 91 [2021-12-17 22:23:00,975 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 125 transitions, 721 flow. Second operand has 8 states, 8 states have (on average 75.5) internal successors, (604), 8 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:23:00,975 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:23:00,975 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 91 [2021-12-17 22:23:00,975 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:23:01,333 INFO L129 PetriNetUnfolder]: 450/1450 cut-off events. [2021-12-17 22:23:01,333 INFO L130 PetriNetUnfolder]: For 2496/3127 co-relation queries the response was YES. [2021-12-17 22:23:01,344 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4701 conditions, 1450 events. 450/1450 cut-off events. For 2496/3127 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 13954 event pairs, 1 based on Foata normal form. 195/1517 useless extension candidates. Maximal degree in co-relation 4670. Up to 242 conditions per place. [2021-12-17 22:23:01,346 INFO L132 encePairwiseOnDemand]: 83/91 looper letters, 0 selfloop transitions, 0 changer transitions 134/134 dead transitions. [2021-12-17 22:23:01,347 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 134 transitions, 868 flow [2021-12-17 22:23:01,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 22:23:01,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-12-17 22:23:01,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1164 transitions. [2021-12-17 22:23:01,351 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8527472527472527 [2021-12-17 22:23:01,351 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1164 transitions. [2021-12-17 22:23:01,351 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1164 transitions. [2021-12-17 22:23:01,352 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:23:01,352 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1164 transitions. [2021-12-17 22:23:01,355 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 77.6) internal successors, (1164), 15 states have internal predecessors, (1164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:23:01,358 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 91.0) internal successors, (1456), 16 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:23:01,359 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 91.0) internal successors, (1456), 16 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:23:01,359 INFO L186 Difference]: Start difference. First operand has 135 places, 125 transitions, 721 flow. Second operand 15 states and 1164 transitions. [2021-12-17 22:23:01,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 134 transitions, 868 flow [2021-12-17 22:23:01,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 134 transitions, 742 flow, removed 42 selfloop flow, removed 16 redundant places. [2021-12-17 22:23:01,378 INFO L242 Difference]: Finished difference. Result has 121 places, 0 transitions, 0 flow [2021-12-17 22:23:01,378 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=547, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=0, PETRI_PLACES=121, PETRI_TRANSITIONS=0} [2021-12-17 22:23:01,381 INFO L334 CegarLoopForPetriNet]: 83 programPoint places, 38 predicate places. [2021-12-17 22:23:01,381 INFO L470 AbstractCegarLoop]: Abstraction has has 121 places, 0 transitions, 0 flow [2021-12-17 22:23:01,382 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 75.5) internal successors, (604), 8 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:23:01,386 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2021-12-17 22:23:01,386 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 4 remaining) [2021-12-17 22:23:01,387 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (1 of 4 remaining) [2021-12-17 22:23:01,387 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION (0 of 4 remaining) [2021-12-17 22:23:01,387 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-17 22:23:01,391 INFO L732 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1] [2021-12-17 22:23:01,394 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-12-17 22:23:01,395 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-17 22:23:01,399 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.12 10:23:01 BasicIcfg [2021-12-17 22:23:01,399 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-17 22:23:01,400 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-17 22:23:01,400 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-17 22:23:01,400 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-17 22:23:01,400 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 10:22:57" (3/4) ... [2021-12-17 22:23:01,403 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-12-17 22:23:01,413 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2021-12-17 22:23:01,413 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2021-12-17 22:23:01,413 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2021-12-17 22:23:01,419 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2021-12-17 22:23:01,419 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-12-17 22:23:01,419 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-12-17 22:23:01,420 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-12-17 22:23:01,455 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-17 22:23:01,456 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-17 22:23:01,456 INFO L158 Benchmark]: Toolchain (without parser) took 5234.50ms. Allocated memory was 107.0MB in the beginning and 188.7MB in the end (delta: 81.8MB). Free memory was 72.9MB in the beginning and 95.7MB in the end (delta: -22.8MB). Peak memory consumption was 58.7MB. Max. memory is 16.1GB. [2021-12-17 22:23:01,457 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 107.0MB. Free memory was 63.9MB in the beginning and 63.9MB in the end (delta: 76.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-17 22:23:01,457 INFO L158 Benchmark]: CACSL2BoogieTranslator took 484.47ms. Allocated memory is still 107.0MB. Free memory was 72.9MB in the beginning and 70.8MB in the end (delta: 2.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-17 22:23:01,457 INFO L158 Benchmark]: Boogie Procedure Inliner took 61.05ms. Allocated memory is still 107.0MB. Free memory was 70.8MB in the beginning and 68.6MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-17 22:23:01,458 INFO L158 Benchmark]: Boogie Preprocessor took 47.58ms. Allocated memory is still 107.0MB. Free memory was 68.6MB in the beginning and 67.3MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-17 22:23:01,458 INFO L158 Benchmark]: RCFGBuilder took 374.42ms. Allocated memory is still 107.0MB. Free memory was 67.3MB in the beginning and 55.4MB in the end (delta: 11.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-17 22:23:01,458 INFO L158 Benchmark]: TraceAbstraction took 4190.52ms. Allocated memory was 130.0MB in the beginning and 188.7MB in the end (delta: 58.7MB). Free memory was 105.1MB in the beginning and 97.8MB in the end (delta: 7.4MB). Peak memory consumption was 65.4MB. Max. memory is 16.1GB. [2021-12-17 22:23:01,459 INFO L158 Benchmark]: Witness Printer took 56.05ms. Allocated memory is still 188.7MB. Free memory was 97.8MB in the beginning and 95.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-17 22:23:01,461 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 107.0MB. Free memory was 63.9MB in the beginning and 63.9MB in the end (delta: 76.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 484.47ms. Allocated memory is still 107.0MB. Free memory was 72.9MB in the beginning and 70.8MB in the end (delta: 2.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 61.05ms. Allocated memory is still 107.0MB. Free memory was 70.8MB in the beginning and 68.6MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 47.58ms. Allocated memory is still 107.0MB. Free memory was 68.6MB in the beginning and 67.3MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 374.42ms. Allocated memory is still 107.0MB. Free memory was 67.3MB in the beginning and 55.4MB in the end (delta: 11.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 4190.52ms. Allocated memory was 130.0MB in the beginning and 188.7MB in the end (delta: 58.7MB). Free memory was 105.1MB in the beginning and 97.8MB in the end (delta: 7.4MB). Peak memory consumption was 65.4MB. Max. memory is 16.1GB. * Witness Printer took 56.05ms. Allocated memory is still 188.7MB. Free memory was 97.8MB in the beginning and 95.7MB 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: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 114 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 4.1s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 306 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 306 mSDsluCounter, 411 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 400 mSDsCounter, 87 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 450 IncrementalHoareTripleChecker+Invalid, 537 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 87 mSolverCounterUnsat, 109 mSDtfsCounter, 450 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 101 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=737occurred in iteration=6, InterpolantAutomatonStates: 82, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 470 NumberOfCodeBlocks, 470 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 462 ConstructedInterpolants, 0 QuantifiedInterpolants, 1810 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-12-17 22:23:01,510 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