./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe011_tso.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e19ca921 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/safe011_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 c5d6625a918041bec3ddf6b8a37ec84fd94f58444755be51392d35f521d3d51e --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 13:31:46,929 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 13:31:46,930 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 13:31:46,951 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 13:31:46,952 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 13:31:46,952 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 13:31:46,953 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 13:31:46,955 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 13:31:46,956 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 13:31:46,956 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 13:31:46,957 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 13:31:46,958 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 13:31:46,958 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 13:31:46,959 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 13:31:46,965 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 13:31:46,966 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 13:31:46,967 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 13:31:46,967 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 13:31:46,968 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 13:31:46,971 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 13:31:46,972 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 13:31:46,977 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 13:31:46,978 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 13:31:46,978 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 13:31:46,980 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 13:31:46,980 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 13:31:46,984 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 13:31:46,985 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 13:31:46,985 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 13:31:46,985 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 13:31:46,986 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 13:31:46,986 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 13:31:46,987 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 13:31:46,987 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 13:31:46,988 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 13:31:46,989 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 13:31:46,990 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 13:31:46,990 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 13:31:46,990 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 13:31:46,991 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 13:31:46,992 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 13:31:46,993 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-22 13:31:47,017 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 13:31:47,019 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 13:31:47,019 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 13:31:47,019 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 13:31:47,020 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 13:31:47,020 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 13:31:47,021 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 13:31:47,021 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 13:31:47,021 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 13:31:47,021 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 13:31:47,022 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-22 13:31:47,022 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 13:31:47,022 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-22 13:31:47,022 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 13:31:47,022 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 13:31:47,022 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 13:31:47,023 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 13:31:47,023 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-22 13:31:47,023 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 13:31:47,023 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 13:31:47,023 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 13:31:47,023 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 13:31:47,024 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 13:31:47,024 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 13:31:47,024 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 13:31:47,024 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 13:31:47,024 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 13:31:47,024 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 13:31:47,024 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 13:31:47,025 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 13:31:47,025 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-22 13:31:47,025 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-22 13:31:47,025 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 13:31:47,025 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 13:31:47,025 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c5d6625a918041bec3ddf6b8a37ec84fd94f58444755be51392d35f521d3d51e [2021-12-22 13:31:47,178 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 13:31:47,199 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 13:31:47,201 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 13:31:47,202 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 13:31:47,203 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 13:31:47,203 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe011_tso.i [2021-12-22 13:31:47,244 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d347f9c68/ef1387dd664b48178e077e6d1f5abf88/FLAGddfb3d608 [2021-12-22 13:31:47,595 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 13:31:47,603 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe011_tso.i [2021-12-22 13:31:47,619 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d347f9c68/ef1387dd664b48178e077e6d1f5abf88/FLAGddfb3d608 [2021-12-22 13:31:47,964 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d347f9c68/ef1387dd664b48178e077e6d1f5abf88 [2021-12-22 13:31:47,965 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 13:31:47,966 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 13:31:47,977 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 13:31:47,977 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 13:31:47,979 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 13:31:47,980 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 01:31:47" (1/1) ... [2021-12-22 13:31:47,982 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42acb5e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:31:47, skipping insertion in model container [2021-12-22 13:31:47,982 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 01:31:47" (1/1) ... [2021-12-22 13:31:47,986 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 13:31:48,021 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 13:31:48,128 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/safe011_tso.i[945,958] [2021-12-22 13:31:48,232 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 13:31:48,237 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 13:31:48,244 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/safe011_tso.i[945,958] [2021-12-22 13:31:48,269 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 13:31:48,290 INFO L208 MainTranslator]: Completed translation [2021-12-22 13:31:48,291 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:31:48 WrapperNode [2021-12-22 13:31:48,291 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 13:31:48,292 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 13:31:48,292 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 13:31:48,292 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 13:31:48,296 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:31:48" (1/1) ... [2021-12-22 13:31:48,304 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:31:48" (1/1) ... [2021-12-22 13:31:48,316 INFO L137 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 70 [2021-12-22 13:31:48,317 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 13:31:48,317 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 13:31:48,317 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 13:31:48,317 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 13:31:48,322 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:31:48" (1/1) ... [2021-12-22 13:31:48,322 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:31:48" (1/1) ... [2021-12-22 13:31:48,333 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:31:48" (1/1) ... [2021-12-22 13:31:48,336 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:31:48" (1/1) ... [2021-12-22 13:31:48,339 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:31:48" (1/1) ... [2021-12-22 13:31:48,348 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:31:48" (1/1) ... [2021-12-22 13:31:48,349 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:31:48" (1/1) ... [2021-12-22 13:31:48,351 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 13:31:48,354 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 13:31:48,355 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 13:31:48,355 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 13:31:48,358 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:31:48" (1/1) ... [2021-12-22 13:31:48,363 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 13:31:48,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 13:31:48,381 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) [2021-12-22 13:31:48,382 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 [2021-12-22 13:31:48,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-22 13:31:48,403 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-12-22 13:31:48,403 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 13:31:48,403 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-22 13:31:48,403 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-22 13:31:48,403 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-12-22 13:31:48,403 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-12-22 13:31:48,403 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-12-22 13:31:48,403 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-12-22 13:31:48,403 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-12-22 13:31:48,403 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-12-22 13:31:48,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-22 13:31:48,403 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-12-22 13:31:48,403 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 13:31:48,403 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 13:31:48,404 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-12-22 13:31:48,478 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 13:31:48,479 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 13:31:48,582 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 13:31:48,595 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 13:31:48,595 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-22 13:31:48,597 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:31:48 BoogieIcfgContainer [2021-12-22 13:31:48,597 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 13:31:48,598 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 13:31:48,598 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 13:31:48,600 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 13:31:48,600 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 01:31:47" (1/3) ... [2021-12-22 13:31:48,601 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ee80dcb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 01:31:48, skipping insertion in model container [2021-12-22 13:31:48,601 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:31:48" (2/3) ... [2021-12-22 13:31:48,601 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ee80dcb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 01:31:48, skipping insertion in model container [2021-12-22 13:31:48,601 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:31:48" (3/3) ... [2021-12-22 13:31:48,602 INFO L111 eAbstractionObserver]: Analyzing ICFG safe011_tso.i [2021-12-22 13:31:48,605 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-12-22 13:31:48,606 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 13:31:48,606 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-22 13:31:48,606 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-12-22 13:31:48,630 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:31:48,631 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:31:48,631 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:31:48,631 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:31:48,631 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:31:48,631 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:31:48,632 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:31:48,632 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:31:48,632 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:31:48,632 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:31:48,633 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:31:48,633 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:31:48,633 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:31:48,633 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:31:48,634 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:31:48,634 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:31:48,634 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:31:48,634 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:31:48,634 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:31:48,634 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:31:48,635 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:31:48,635 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:31:48,636 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:31:48,636 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:31:48,636 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:31:48,636 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:31:48,636 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:31:48,637 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:31:48,637 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:31:48,637 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:31:48,637 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:31:48,637 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:31:48,638 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:31:48,638 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:31:48,638 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:31:48,638 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:31:48,641 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:31:48,641 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:31:48,641 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:31:48,642 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:31:48,644 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:31:48,644 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:31:48,644 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:31:48,644 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:31:48,645 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:31:48,645 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:31:48,645 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:31:48,646 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:31:48,646 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-12-22 13:31:48,677 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 13:31:48,682 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 [2021-12-22 13:31:48,682 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-12-22 13:31:48,694 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 99 places, 91 transitions, 197 flow [2021-12-22 13:31:48,742 INFO L129 PetriNetUnfolder]: 2/88 cut-off events. [2021-12-22 13:31:48,742 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-12-22 13:31:48,745 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. [2021-12-22 13:31:48,745 INFO L82 GeneralOperation]: Start removeDead. Operand has 99 places, 91 transitions, 197 flow [2021-12-22 13:31:48,748 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 83 places, 74 transitions, 157 flow [2021-12-22 13:31:48,762 INFO L129 PetriNetUnfolder]: 1/73 cut-off events. [2021-12-22 13:31:48,762 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-12-22 13:31:48,763 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:31:48,763 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] [2021-12-22 13:31:48,764 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-22 13:31:48,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:31:48,767 INFO L85 PathProgramCache]: Analyzing trace with hash -1250208404, now seen corresponding path program 1 times [2021-12-22 13:31:48,773 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:31:48,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190970760] [2021-12-22 13:31:48,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:31:48,774 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:31:48,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:31:49,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:31:49,139 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:31:49,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190970760] [2021-12-22 13:31:49,140 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190970760] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:31:49,140 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:31:49,140 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 13:31:49,141 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499281861] [2021-12-22 13:31:49,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:31:49,148 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 13:31:49,148 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:31:49,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 13:31:49,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-22 13:31:49,171 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 91 [2021-12-22 13:31:49,173 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 74 transitions, 157 flow. Second operand has 7 states, 7 states have (on average 71.71428571428571) internal successors, (502), 7 states have internal predecessors, (502), 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) [2021-12-22 13:31:49,173 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:31:49,174 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 91 [2021-12-22 13:31:49,174 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:31:49,415 INFO L129 PetriNetUnfolder]: 303/820 cut-off events. [2021-12-22 13:31:49,415 INFO L130 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2021-12-22 13:31:49,418 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1371 conditions, 820 events. 303/820 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 4890 event pairs, 31 based on Foata normal form. 27/816 useless extension candidates. Maximal degree in co-relation 1335. Up to 135 conditions per place. [2021-12-22 13:31:49,422 INFO L132 encePairwiseOnDemand]: 80/91 looper letters, 22 selfloop transitions, 6 changer transitions 47/131 dead transitions. [2021-12-22 13:31:49,422 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 131 transitions, 421 flow [2021-12-22 13:31:49,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-22 13:31:49,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-12-22 13:31:49,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 991 transitions. [2021-12-22 13:31:49,434 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8377007607776839 [2021-12-22 13:31:49,434 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 991 transitions. [2021-12-22 13:31:49,435 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 991 transitions. [2021-12-22 13:31:49,437 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:31:49,439 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 991 transitions. [2021-12-22 13:31:49,443 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 76.23076923076923) internal successors, (991), 13 states have internal predecessors, (991), 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) [2021-12-22 13:31:49,454 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) [2021-12-22 13:31:49,455 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) [2021-12-22 13:31:49,456 INFO L186 Difference]: Start difference. First operand has 83 places, 74 transitions, 157 flow. Second operand 13 states and 991 transitions. [2021-12-22 13:31:49,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 131 transitions, 421 flow [2021-12-22 13:31:49,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 131 transitions, 418 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-12-22 13:31:49,463 INFO L242 Difference]: Finished difference. Result has 104 places, 77 transitions, 238 flow [2021-12-22 13:31:49,464 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=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=238, PETRI_PLACES=104, PETRI_TRANSITIONS=77} [2021-12-22 13:31:49,468 INFO L334 CegarLoopForPetriNet]: 83 programPoint places, 21 predicate places. [2021-12-22 13:31:49,469 INFO L470 AbstractCegarLoop]: Abstraction has has 104 places, 77 transitions, 238 flow [2021-12-22 13:31:49,469 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 71.71428571428571) internal successors, (502), 7 states have internal predecessors, (502), 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) [2021-12-22 13:31:49,469 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:31:49,470 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 13:31:49,470 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-22 13:31:49,470 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-22 13:31:49,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:31:49,474 INFO L85 PathProgramCache]: Analyzing trace with hash 404556299, now seen corresponding path program 1 times [2021-12-22 13:31:49,474 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:31:49,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873768198] [2021-12-22 13:31:49,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:31:49,475 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:31:49,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:31:49,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:31:49,644 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:31:49,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873768198] [2021-12-22 13:31:49,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873768198] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:31:49,644 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:31:49,644 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 13:31:49,645 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280864355] [2021-12-22 13:31:49,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:31:49,648 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 13:31:49,648 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:31:49,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 13:31:49,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 13:31:49,651 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 91 [2021-12-22 13:31:49,651 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 77 transitions, 238 flow. Second operand has 7 states, 7 states have (on average 70.0) internal successors, (490), 7 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:31:49,652 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:31:49,652 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 91 [2021-12-22 13:31:49,652 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:31:49,976 INFO L129 PetriNetUnfolder]: 472/1239 cut-off events. [2021-12-22 13:31:49,976 INFO L130 PetriNetUnfolder]: For 2689/3434 co-relation queries the response was YES. [2021-12-22 13:31:49,981 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3770 conditions, 1239 events. 472/1239 cut-off events. For 2689/3434 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 8121 event pairs, 9 based on Foata normal form. 35/1238 useless extension candidates. Maximal degree in co-relation 3722. Up to 258 conditions per place. [2021-12-22 13:31:49,986 INFO L132 encePairwiseOnDemand]: 79/91 looper letters, 40 selfloop transitions, 18 changer transitions 84/196 dead transitions. [2021-12-22 13:31:49,986 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 196 transitions, 1358 flow [2021-12-22 13:31:49,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-22 13:31:49,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-12-22 13:31:49,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1272 transitions. [2021-12-22 13:31:49,989 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8222365869424693 [2021-12-22 13:31:49,989 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1272 transitions. [2021-12-22 13:31:49,989 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1272 transitions. [2021-12-22 13:31:49,990 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:31:49,990 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1272 transitions. [2021-12-22 13:31:49,992 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 74.82352941176471) internal successors, (1272), 17 states have internal predecessors, (1272), 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) [2021-12-22 13:31:49,994 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 91.0) internal successors, (1638), 18 states have internal predecessors, (1638), 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) [2021-12-22 13:31:49,995 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 91.0) internal successors, (1638), 18 states have internal predecessors, (1638), 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) [2021-12-22 13:31:49,995 INFO L186 Difference]: Start difference. First operand has 104 places, 77 transitions, 238 flow. Second operand 17 states and 1272 transitions. [2021-12-22 13:31:49,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 196 transitions, 1358 flow [2021-12-22 13:31:50,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 196 transitions, 1313 flow, removed 20 selfloop flow, removed 4 redundant places. [2021-12-22 13:31:50,004 INFO L242 Difference]: Finished difference. Result has 123 places, 90 transitions, 472 flow [2021-12-22 13:31:50,005 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=472, PETRI_PLACES=123, PETRI_TRANSITIONS=90} [2021-12-22 13:31:50,005 INFO L334 CegarLoopForPetriNet]: 83 programPoint places, 40 predicate places. [2021-12-22 13:31:50,006 INFO L470 AbstractCegarLoop]: Abstraction has has 123 places, 90 transitions, 472 flow [2021-12-22 13:31:50,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 70.0) internal successors, (490), 7 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:31:50,006 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:31:50,006 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] [2021-12-22 13:31:50,006 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-22 13:31:50,007 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-22 13:31:50,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:31:50,007 INFO L85 PathProgramCache]: Analyzing trace with hash -332297076, now seen corresponding path program 1 times [2021-12-22 13:31:50,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:31:50,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333204513] [2021-12-22 13:31:50,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:31:50,008 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:31:50,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:31:50,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:31:50,137 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:31:50,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333204513] [2021-12-22 13:31:50,137 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333204513] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:31:50,138 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:31:50,138 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 13:31:50,138 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338371796] [2021-12-22 13:31:50,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:31:50,139 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 13:31:50,139 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:31:50,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 13:31:50,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-22 13:31:50,141 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 91 [2021-12-22 13:31:50,142 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 90 transitions, 472 flow. Second operand has 7 states, 7 states have (on average 72.0) internal successors, (504), 7 states have internal predecessors, (504), 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) [2021-12-22 13:31:50,142 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:31:50,142 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 91 [2021-12-22 13:31:50,142 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:31:50,334 INFO L129 PetriNetUnfolder]: 227/718 cut-off events. [2021-12-22 13:31:50,334 INFO L130 PetriNetUnfolder]: For 5696/5994 co-relation queries the response was YES. [2021-12-22 13:31:50,338 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3212 conditions, 718 events. 227/718 cut-off events. For 5696/5994 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 4146 event pairs, 6 based on Foata normal form. 31/731 useless extension candidates. Maximal degree in co-relation 3149. Up to 188 conditions per place. [2021-12-22 13:31:50,342 INFO L132 encePairwiseOnDemand]: 80/91 looper letters, 31 selfloop transitions, 22 changer transitions 47/157 dead transitions. [2021-12-22 13:31:50,342 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 157 transitions, 1403 flow [2021-12-22 13:31:50,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-22 13:31:50,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-12-22 13:31:50,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 981 transitions. [2021-12-22 13:31:50,344 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8292476754015216 [2021-12-22 13:31:50,344 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 981 transitions. [2021-12-22 13:31:50,344 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 981 transitions. [2021-12-22 13:31:50,345 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:31:50,345 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 981 transitions. [2021-12-22 13:31:50,346 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 75.46153846153847) internal successors, (981), 13 states have internal predecessors, (981), 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) [2021-12-22 13:31:50,348 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) [2021-12-22 13:31:50,348 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) [2021-12-22 13:31:50,349 INFO L186 Difference]: Start difference. First operand has 123 places, 90 transitions, 472 flow. Second operand 13 states and 981 transitions. [2021-12-22 13:31:50,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 157 transitions, 1403 flow [2021-12-22 13:31:50,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 157 transitions, 1259 flow, removed 72 selfloop flow, removed 9 redundant places. [2021-12-22 13:31:50,365 INFO L242 Difference]: Finished difference. Result has 126 places, 100 transitions, 677 flow [2021-12-22 13:31:50,365 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=424, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=677, PETRI_PLACES=126, PETRI_TRANSITIONS=100} [2021-12-22 13:31:50,367 INFO L334 CegarLoopForPetriNet]: 83 programPoint places, 43 predicate places. [2021-12-22 13:31:50,367 INFO L470 AbstractCegarLoop]: Abstraction has has 126 places, 100 transitions, 677 flow [2021-12-22 13:31:50,368 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 72.0) internal successors, (504), 7 states have internal predecessors, (504), 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) [2021-12-22 13:31:50,368 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:31:50,368 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] [2021-12-22 13:31:50,372 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-22 13:31:50,372 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-22 13:31:50,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:31:50,374 INFO L85 PathProgramCache]: Analyzing trace with hash -740900114, now seen corresponding path program 1 times [2021-12-22 13:31:50,374 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:31:50,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445688004] [2021-12-22 13:31:50,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:31:50,375 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:31:50,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:31:50,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:31:50,496 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:31:50,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445688004] [2021-12-22 13:31:50,496 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445688004] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:31:50,496 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:31:50,497 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 13:31:50,497 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597707929] [2021-12-22 13:31:50,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:31:50,497 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 13:31:50,497 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:31:50,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 13:31:50,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-22 13:31:50,498 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 91 [2021-12-22 13:31:50,499 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 100 transitions, 677 flow. Second operand has 7 states, 7 states have (on average 72.0) internal successors, (504), 7 states have internal predecessors, (504), 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) [2021-12-22 13:31:50,499 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:31:50,499 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 91 [2021-12-22 13:31:50,499 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:31:50,671 INFO L129 PetriNetUnfolder]: 172/645 cut-off events. [2021-12-22 13:31:50,671 INFO L130 PetriNetUnfolder]: For 4881/5329 co-relation queries the response was YES. [2021-12-22 13:31:50,674 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2695 conditions, 645 events. 172/645 cut-off events. For 4881/5329 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 3785 event pairs, 2 based on Foata normal form. 27/660 useless extension candidates. Maximal degree in co-relation 2625. Up to 145 conditions per place. [2021-12-22 13:31:50,676 INFO L132 encePairwiseOnDemand]: 80/91 looper letters, 30 selfloop transitions, 29 changer transitions 43/159 dead transitions. [2021-12-22 13:31:50,677 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 159 transitions, 1617 flow [2021-12-22 13:31:50,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-22 13:31:50,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-12-22 13:31:50,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 978 transitions. [2021-12-22 13:31:50,679 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8267117497886729 [2021-12-22 13:31:50,679 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 978 transitions. [2021-12-22 13:31:50,679 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 978 transitions. [2021-12-22 13:31:50,679 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:31:50,679 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 978 transitions. [2021-12-22 13:31:50,681 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 75.23076923076923) internal successors, (978), 13 states have internal predecessors, (978), 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) [2021-12-22 13:31:50,682 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) [2021-12-22 13:31:50,684 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) [2021-12-22 13:31:50,684 INFO L186 Difference]: Start difference. First operand has 126 places, 100 transitions, 677 flow. Second operand 13 states and 978 transitions. [2021-12-22 13:31:50,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 159 transitions, 1617 flow [2021-12-22 13:31:50,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 159 transitions, 1485 flow, removed 66 selfloop flow, removed 9 redundant places. [2021-12-22 13:31:50,696 INFO L242 Difference]: Finished difference. Result has 130 places, 105 transitions, 791 flow [2021-12-22 13:31:50,697 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=629, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=791, PETRI_PLACES=130, PETRI_TRANSITIONS=105} [2021-12-22 13:31:50,697 INFO L334 CegarLoopForPetriNet]: 83 programPoint places, 47 predicate places. [2021-12-22 13:31:50,698 INFO L470 AbstractCegarLoop]: Abstraction has has 130 places, 105 transitions, 791 flow [2021-12-22 13:31:50,698 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 72.0) internal successors, (504), 7 states have internal predecessors, (504), 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) [2021-12-22 13:31:50,699 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:31:50,699 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 13:31:50,699 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-22 13:31:50,699 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-22 13:31:50,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:31:50,700 INFO L85 PathProgramCache]: Analyzing trace with hash -46698488, now seen corresponding path program 1 times [2021-12-22 13:31:50,700 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:31:50,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753357335] [2021-12-22 13:31:50,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:31:50,701 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:31:50,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:31:50,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:31:50,807 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:31:50,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753357335] [2021-12-22 13:31:50,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753357335] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:31:50,807 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:31:50,807 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-22 13:31:50,807 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214029353] [2021-12-22 13:31:50,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:31:50,807 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-22 13:31:50,808 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:31:50,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-22 13:31:50,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-22 13:31:50,808 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 91 [2021-12-22 13:31:50,809 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 105 transitions, 791 flow. Second operand has 8 states, 8 states have (on average 70.0) internal successors, (560), 8 states have internal predecessors, (560), 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) [2021-12-22 13:31:50,809 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:31:50,809 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 91 [2021-12-22 13:31:50,809 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:31:50,952 INFO L129 PetriNetUnfolder]: 165/535 cut-off events. [2021-12-22 13:31:50,952 INFO L130 PetriNetUnfolder]: For 4403/6091 co-relation queries the response was YES. [2021-12-22 13:31:50,954 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2579 conditions, 535 events. 165/535 cut-off events. For 4403/6091 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2790 event pairs, 9 based on Foata normal form. 17/529 useless extension candidates. Maximal degree in co-relation 2504. Up to 122 conditions per place. [2021-12-22 13:31:50,955 INFO L132 encePairwiseOnDemand]: 80/91 looper letters, 28 selfloop transitions, 10 changer transitions 76/168 dead transitions. [2021-12-22 13:31:50,955 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 168 transitions, 1874 flow [2021-12-22 13:31:50,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-22 13:31:50,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-12-22 13:31:50,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 813 transitions. [2021-12-22 13:31:50,957 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8121878121878122 [2021-12-22 13:31:50,957 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 813 transitions. [2021-12-22 13:31:50,957 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 813 transitions. [2021-12-22 13:31:50,958 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:31:50,958 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 813 transitions. [2021-12-22 13:31:50,959 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 73.9090909090909) internal successors, (813), 11 states have internal predecessors, (813), 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) [2021-12-22 13:31:50,960 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) [2021-12-22 13:31:50,960 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) [2021-12-22 13:31:50,960 INFO L186 Difference]: Start difference. First operand has 130 places, 105 transitions, 791 flow. Second operand 11 states and 813 transitions. [2021-12-22 13:31:50,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 168 transitions, 1874 flow [2021-12-22 13:31:50,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 168 transitions, 1706 flow, removed 62 selfloop flow, removed 13 redundant places. [2021-12-22 13:31:50,970 INFO L242 Difference]: Finished difference. Result has 126 places, 85 transitions, 485 flow [2021-12-22 13:31:50,970 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=725, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=485, PETRI_PLACES=126, PETRI_TRANSITIONS=85} [2021-12-22 13:31:50,970 INFO L334 CegarLoopForPetriNet]: 83 programPoint places, 43 predicate places. [2021-12-22 13:31:50,970 INFO L470 AbstractCegarLoop]: Abstraction has has 126 places, 85 transitions, 485 flow [2021-12-22 13:31:50,971 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 70.0) internal successors, (560), 8 states have internal predecessors, (560), 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) [2021-12-22 13:31:50,971 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:31:50,971 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] [2021-12-22 13:31:50,971 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-22 13:31:50,971 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-22 13:31:50,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:31:50,971 INFO L85 PathProgramCache]: Analyzing trace with hash 2121397217, now seen corresponding path program 1 times [2021-12-22 13:31:50,972 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:31:50,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552895437] [2021-12-22 13:31:50,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:31:50,972 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:31:50,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:31:51,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:31:51,046 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:31:51,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552895437] [2021-12-22 13:31:51,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552895437] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:31:51,046 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:31:51,046 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-22 13:31:51,047 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59251397] [2021-12-22 13:31:51,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:31:51,047 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 13:31:51,047 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:31:51,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 13:31:51,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-22 13:31:51,048 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 91 [2021-12-22 13:31:51,048 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 85 transitions, 485 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) [2021-12-22 13:31:51,048 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:31:51,048 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 91 [2021-12-22 13:31:51,049 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:31:51,176 INFO L129 PetriNetUnfolder]: 260/776 cut-off events. [2021-12-22 13:31:51,176 INFO L130 PetriNetUnfolder]: For 1047/1146 co-relation queries the response was YES. [2021-12-22 13:31:51,180 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1744 conditions, 776 events. 260/776 cut-off events. For 1047/1146 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 5384 event pairs, 6 based on Foata normal form. 18/720 useless extension candidates. Maximal degree in co-relation 1673. Up to 190 conditions per place. [2021-12-22 13:31:51,182 INFO L132 encePairwiseOnDemand]: 81/91 looper letters, 29 selfloop transitions, 17 changer transitions 0/117 dead transitions. [2021-12-22 13:31:51,182 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 117 transitions, 645 flow [2021-12-22 13:31:51,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-22 13:31:51,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-12-22 13:31:51,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 788 transitions. [2021-12-22 13:31:51,184 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.865934065934066 [2021-12-22 13:31:51,184 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 788 transitions. [2021-12-22 13:31:51,184 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 788 transitions. [2021-12-22 13:31:51,185 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:31:51,185 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 788 transitions. [2021-12-22 13:31:51,208 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) [2021-12-22 13:31:51,209 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) [2021-12-22 13:31:51,209 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) [2021-12-22 13:31:51,209 INFO L186 Difference]: Start difference. First operand has 126 places, 85 transitions, 485 flow. Second operand 10 states and 788 transitions. [2021-12-22 13:31:51,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 117 transitions, 645 flow [2021-12-22 13:31:51,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 117 transitions, 557 flow, removed 27 selfloop flow, removed 13 redundant places. [2021-12-22 13:31:51,214 INFO L242 Difference]: Finished difference. Result has 122 places, 100 transitions, 517 flow [2021-12-22 13:31:51,215 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=397, PETRI_DIFFERENCE_MINUEND_PLACES=107, 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=517, PETRI_PLACES=122, PETRI_TRANSITIONS=100} [2021-12-22 13:31:51,215 INFO L334 CegarLoopForPetriNet]: 83 programPoint places, 39 predicate places. [2021-12-22 13:31:51,215 INFO L470 AbstractCegarLoop]: Abstraction has has 122 places, 100 transitions, 517 flow [2021-12-22 13:31:51,215 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) [2021-12-22 13:31:51,215 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:31:51,216 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] [2021-12-22 13:31:51,216 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-22 13:31:51,216 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-22 13:31:51,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:31:51,216 INFO L85 PathProgramCache]: Analyzing trace with hash -509335992, now seen corresponding path program 1 times [2021-12-22 13:31:51,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:31:51,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332911300] [2021-12-22 13:31:51,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:31:51,217 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:31:51,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:31:51,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:31:51,302 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:31:51,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332911300] [2021-12-22 13:31:51,302 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332911300] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:31:51,302 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:31:51,302 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 13:31:51,302 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621340678] [2021-12-22 13:31:51,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:31:51,308 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 13:31:51,308 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:31:51,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 13:31:51,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-22 13:31:51,310 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 91 [2021-12-22 13:31:51,310 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 100 transitions, 517 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) [2021-12-22 13:31:51,311 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:31:51,311 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 91 [2021-12-22 13:31:51,311 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:31:51,476 INFO L129 PetriNetUnfolder]: 246/770 cut-off events. [2021-12-22 13:31:51,477 INFO L130 PetriNetUnfolder]: For 1829/1968 co-relation queries the response was YES. [2021-12-22 13:31:51,481 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2576 conditions, 770 events. 246/770 cut-off events. For 1829/1968 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 5620 event pairs, 0 based on Foata normal form. 66/787 useless extension candidates. Maximal degree in co-relation 2509. Up to 240 conditions per place. [2021-12-22 13:31:51,483 INFO L132 encePairwiseOnDemand]: 81/91 looper letters, 22 selfloop transitions, 32 changer transitions 13/138 dead transitions. [2021-12-22 13:31:51,483 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 138 transitions, 887 flow [2021-12-22 13:31:51,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-22 13:31:51,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-12-22 13:31:51,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1025 transitions. [2021-12-22 13:31:51,485 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8664412510566357 [2021-12-22 13:31:51,485 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1025 transitions. [2021-12-22 13:31:51,486 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1025 transitions. [2021-12-22 13:31:51,486 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:31:51,486 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1025 transitions. [2021-12-22 13:31:51,487 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) [2021-12-22 13:31:51,489 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) [2021-12-22 13:31:51,489 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) [2021-12-22 13:31:51,490 INFO L186 Difference]: Start difference. First operand has 122 places, 100 transitions, 517 flow. Second operand 13 states and 1025 transitions. [2021-12-22 13:31:51,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 138 transitions, 887 flow [2021-12-22 13:31:51,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 138 transitions, 859 flow, removed 11 selfloop flow, removed 4 redundant places. [2021-12-22 13:31:51,496 INFO L242 Difference]: Finished difference. Result has 134 places, 116 transitions, 692 flow [2021-12-22 13:31:51,496 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=489, PETRI_DIFFERENCE_MINUEND_PLACES=118, 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=692, PETRI_PLACES=134, PETRI_TRANSITIONS=116} [2021-12-22 13:31:51,497 INFO L334 CegarLoopForPetriNet]: 83 programPoint places, 51 predicate places. [2021-12-22 13:31:51,497 INFO L470 AbstractCegarLoop]: Abstraction has has 134 places, 116 transitions, 692 flow [2021-12-22 13:31:51,497 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) [2021-12-22 13:31:51,497 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:31:51,497 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 13:31:51,497 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-22 13:31:51,498 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-22 13:31:51,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:31:51,498 INFO L85 PathProgramCache]: Analyzing trace with hash -1682813595, now seen corresponding path program 1 times [2021-12-22 13:31:51,498 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:31:51,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936810659] [2021-12-22 13:31:51,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:31:51,498 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:31:51,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:31:51,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:31:51,571 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:31:51,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936810659] [2021-12-22 13:31:51,571 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936810659] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:31:51,572 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:31:51,572 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-22 13:31:51,572 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340876438] [2021-12-22 13:31:51,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:31:51,572 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-22 13:31:51,573 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:31:51,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-22 13:31:51,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-22 13:31:51,574 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 91 [2021-12-22 13:31:51,574 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 116 transitions, 692 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) [2021-12-22 13:31:51,574 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:31:51,574 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 91 [2021-12-22 13:31:51,574 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:31:51,767 INFO L129 PetriNetUnfolder]: 198/632 cut-off events. [2021-12-22 13:31:51,767 INFO L130 PetriNetUnfolder]: For 2481/2736 co-relation queries the response was YES. [2021-12-22 13:31:51,770 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2529 conditions, 632 events. 198/632 cut-off events. For 2481/2736 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 4720 event pairs, 0 based on Foata normal form. 71/650 useless extension candidates. Maximal degree in co-relation 2459. Up to 195 conditions per place. [2021-12-22 13:31:51,771 INFO L132 encePairwiseOnDemand]: 83/91 looper letters, 0 selfloop transitions, 0 changer transitions 123/123 dead transitions. [2021-12-22 13:31:51,771 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 123 transitions, 871 flow [2021-12-22 13:31:51,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-22 13:31:51,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-12-22 13:31:51,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1163 transitions. [2021-12-22 13:31:51,773 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.852014652014652 [2021-12-22 13:31:51,773 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1163 transitions. [2021-12-22 13:31:51,773 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1163 transitions. [2021-12-22 13:31:51,774 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:31:51,774 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1163 transitions. [2021-12-22 13:31:51,776 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 77.53333333333333) internal successors, (1163), 15 states have internal predecessors, (1163), 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) [2021-12-22 13:31:51,777 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) [2021-12-22 13:31:51,777 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) [2021-12-22 13:31:51,778 INFO L186 Difference]: Start difference. First operand has 134 places, 116 transitions, 692 flow. Second operand 15 states and 1163 transitions. [2021-12-22 13:31:51,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 123 transitions, 871 flow [2021-12-22 13:31:51,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 123 transitions, 700 flow, removed 58 selfloop flow, removed 15 redundant places. [2021-12-22 13:31:51,787 INFO L242 Difference]: Finished difference. Result has 124 places, 0 transitions, 0 flow [2021-12-22 13:31:51,787 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=515, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=0, PETRI_PLACES=124, PETRI_TRANSITIONS=0} [2021-12-22 13:31:51,787 INFO L334 CegarLoopForPetriNet]: 83 programPoint places, 41 predicate places. [2021-12-22 13:31:51,788 INFO L470 AbstractCegarLoop]: Abstraction has has 124 places, 0 transitions, 0 flow [2021-12-22 13:31:51,788 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) [2021-12-22 13:31:51,790 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2021-12-22 13:31:51,790 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 4 remaining) [2021-12-22 13:31:51,790 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (1 of 4 remaining) [2021-12-22 13:31:51,790 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION (0 of 4 remaining) [2021-12-22 13:31:51,790 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-22 13:31:51,793 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 13:31:51,795 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-12-22 13:31:51,795 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-22 13:31:51,797 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 01:31:51 BasicIcfg [2021-12-22 13:31:51,797 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-22 13:31:51,797 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-22 13:31:51,797 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-22 13:31:51,797 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-22 13:31:51,798 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:31:48" (3/4) ... [2021-12-22 13:31:51,799 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-12-22 13:31:51,803 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2021-12-22 13:31:51,804 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2021-12-22 13:31:51,804 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2021-12-22 13:31:51,806 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2021-12-22 13:31:51,806 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-12-22 13:31:51,806 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-12-22 13:31:51,806 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-12-22 13:31:51,825 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-22 13:31:51,825 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-22 13:31:51,825 INFO L158 Benchmark]: Toolchain (without parser) took 3859.08ms. Allocated memory was 90.2MB in the beginning and 174.1MB in the end (delta: 83.9MB). Free memory was 58.4MB in the beginning and 85.2MB in the end (delta: -26.8MB). Peak memory consumption was 56.2MB. Max. memory is 16.1GB. [2021-12-22 13:31:51,825 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 90.2MB. Free memory was 47.6MB in the beginning and 47.5MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-22 13:31:51,826 INFO L158 Benchmark]: CACSL2BoogieTranslator took 314.30ms. Allocated memory is still 90.2MB. Free memory was 58.2MB in the beginning and 57.2MB in the end (delta: 996.3kB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-22 13:31:51,826 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.20ms. Allocated memory is still 90.2MB. Free memory was 57.2MB in the beginning and 55.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-22 13:31:51,826 INFO L158 Benchmark]: Boogie Preprocessor took 36.72ms. Allocated memory is still 90.2MB. Free memory was 55.1MB in the beginning and 53.7MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-22 13:31:51,826 INFO L158 Benchmark]: RCFGBuilder took 242.44ms. Allocated memory was 90.2MB in the beginning and 119.5MB in the end (delta: 29.4MB). Free memory was 53.7MB in the beginning and 95.3MB in the end (delta: -41.6MB). Peak memory consumption was 17.1MB. Max. memory is 16.1GB. [2021-12-22 13:31:51,826 INFO L158 Benchmark]: TraceAbstraction took 3199.09ms. Allocated memory was 119.5MB in the beginning and 174.1MB in the end (delta: 54.5MB). Free memory was 95.3MB in the beginning and 87.3MB in the end (delta: 8.0MB). Peak memory consumption was 62.5MB. Max. memory is 16.1GB. [2021-12-22 13:31:51,827 INFO L158 Benchmark]: Witness Printer took 27.72ms. Allocated memory is still 174.1MB. Free memory was 87.3MB in the beginning and 85.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-22 13:31:51,828 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 90.2MB. Free memory was 47.6MB in the beginning and 47.5MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 314.30ms. Allocated memory is still 90.2MB. Free memory was 58.2MB in the beginning and 57.2MB in the end (delta: 996.3kB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 25.20ms. Allocated memory is still 90.2MB. Free memory was 57.2MB in the beginning and 55.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 36.72ms. Allocated memory is still 90.2MB. Free memory was 55.1MB in the beginning and 53.7MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 242.44ms. Allocated memory was 90.2MB in the beginning and 119.5MB in the end (delta: 29.4MB). Free memory was 53.7MB in the beginning and 95.3MB in the end (delta: -41.6MB). Peak memory consumption was 17.1MB. Max. memory is 16.1GB. * TraceAbstraction took 3199.09ms. Allocated memory was 119.5MB in the beginning and 174.1MB in the end (delta: 54.5MB). Free memory was 95.3MB in the beginning and 87.3MB in the end (delta: 8.0MB). Peak memory consumption was 62.5MB. Max. memory is 16.1GB. * Witness Printer took 27.72ms. Allocated memory is still 174.1MB. Free memory was 87.3MB in the beginning and 85.2MB 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: 3.1s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 482 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 482 mSDsluCounter, 605 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 559 mSDsCounter, 101 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 490 IncrementalHoareTripleChecker+Invalid, 591 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 101 mSolverCounterUnsat, 144 mSDtfsCounter, 490 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 124 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=791occurred in iteration=4, InterpolantAutomatonStates: 105, 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, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 472 NumberOfCodeBlocks, 472 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 464 ConstructedInterpolants, 0 QuantifiedInterpolants, 1930 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! [2021-12-22 13:31:51,855 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