./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe026_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/safe026_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 80799f6c8fd7356eb24d2cdce2b9813d505d1c320a66d664e71d3261c3c21a3d --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 13:32:27,893 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 13:32:27,894 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 13:32:27,957 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 13:32:27,957 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 13:32:27,960 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 13:32:27,961 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 13:32:27,965 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 13:32:27,967 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 13:32:27,970 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 13:32:27,971 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 13:32:27,972 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 13:32:27,972 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 13:32:27,974 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 13:32:27,975 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 13:32:27,977 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 13:32:27,978 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 13:32:27,979 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 13:32:27,980 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 13:32:27,983 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 13:32:27,984 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 13:32:27,985 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 13:32:27,986 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 13:32:27,987 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 13:32:27,992 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 13:32:27,993 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 13:32:27,993 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 13:32:27,994 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 13:32:27,994 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 13:32:27,995 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 13:32:27,995 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 13:32:27,996 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 13:32:27,997 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 13:32:27,998 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 13:32:27,998 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 13:32:27,999 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 13:32:27,999 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 13:32:27,999 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 13:32:27,999 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 13:32:28,000 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 13:32:28,001 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 13:32:28,002 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-22 13:32:28,022 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 13:32:28,025 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 13:32:28,025 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 13:32:28,025 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 13:32:28,026 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 13:32:28,026 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 13:32:28,026 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 13:32:28,027 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 13:32:28,027 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 13:32:28,027 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 13:32:28,028 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-22 13:32:28,028 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 13:32:28,028 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-22 13:32:28,028 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 13:32:28,028 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 13:32:28,028 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 13:32:28,028 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 13:32:28,028 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-22 13:32:28,029 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 13:32:28,029 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 13:32:28,029 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 13:32:28,029 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 13:32:28,029 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 13:32:28,029 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 13:32:28,029 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 13:32:28,030 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 13:32:28,030 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 13:32:28,031 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 13:32:28,031 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 13:32:28,031 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 13:32:28,031 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-22 13:32:28,031 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-22 13:32:28,031 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 13:32:28,032 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 13:32:28,032 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 80799f6c8fd7356eb24d2cdce2b9813d505d1c320a66d664e71d3261c3c21a3d [2021-12-22 13:32:28,222 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 13:32:28,235 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 13:32:28,237 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 13:32:28,238 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 13:32:28,238 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 13:32:28,239 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe026_tso.i [2021-12-22 13:32:28,285 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d6959ce2/0ed4403fc072472a868c26206c049982/FLAG218231369 [2021-12-22 13:32:28,750 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 13:32:28,757 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe026_tso.i [2021-12-22 13:32:28,776 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d6959ce2/0ed4403fc072472a868c26206c049982/FLAG218231369 [2021-12-22 13:32:29,273 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d6959ce2/0ed4403fc072472a868c26206c049982 [2021-12-22 13:32:29,275 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 13:32:29,276 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 13:32:29,285 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 13:32:29,285 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 13:32:29,291 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 13:32:29,292 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 01:32:29" (1/1) ... [2021-12-22 13:32:29,293 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f174750 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:32:29, skipping insertion in model container [2021-12-22 13:32:29,293 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 01:32:29" (1/1) ... [2021-12-22 13:32:29,297 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 13:32:29,356 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 13:32:29,572 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/safe026_tso.i[945,958] [2021-12-22 13:32:29,712 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 13:32:29,718 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 13:32:29,727 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/safe026_tso.i[945,958] [2021-12-22 13:32:29,755 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 13:32:29,779 INFO L208 MainTranslator]: Completed translation [2021-12-22 13:32:29,779 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:32:29 WrapperNode [2021-12-22 13:32:29,780 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 13:32:29,781 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 13:32:29,781 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 13:32:29,781 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 13:32:29,786 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:32:29" (1/1) ... [2021-12-22 13:32:29,813 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:32:29" (1/1) ... [2021-12-22 13:32:29,831 INFO L137 Inliner]: procedures = 176, calls = 51, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 70 [2021-12-22 13:32:29,832 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 13:32:29,833 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 13:32:29,833 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 13:32:29,833 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 13:32:29,838 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:32:29" (1/1) ... [2021-12-22 13:32:29,839 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:32:29" (1/1) ... [2021-12-22 13:32:29,849 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:32:29" (1/1) ... [2021-12-22 13:32:29,850 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:32:29" (1/1) ... [2021-12-22 13:32:29,857 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:32:29" (1/1) ... [2021-12-22 13:32:29,863 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:32:29" (1/1) ... [2021-12-22 13:32:29,865 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:32:29" (1/1) ... [2021-12-22 13:32:29,870 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 13:32:29,875 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 13:32:29,875 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 13:32:29,875 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 13:32:29,876 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:32:29" (1/1) ... [2021-12-22 13:32:29,881 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 13:32:29,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 13:32:29,904 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 13:32:29,919 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 13:32:29,936 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-22 13:32:29,937 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-12-22 13:32:29,937 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 13:32:29,937 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-22 13:32:29,937 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-22 13:32:29,937 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-12-22 13:32:29,937 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-12-22 13:32:29,938 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-12-22 13:32:29,938 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-12-22 13:32:29,938 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-12-22 13:32:29,938 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-12-22 13:32:29,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-22 13:32:29,938 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-12-22 13:32:29,938 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 13:32:29,938 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 13:32:29,939 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 13:32:30,071 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 13:32:30,072 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 13:32:30,196 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 13:32:30,201 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 13:32:30,201 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-22 13:32:30,203 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:32:30 BoogieIcfgContainer [2021-12-22 13:32:30,203 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 13:32:30,206 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 13:32:30,206 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 13:32:30,209 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 13:32:30,209 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 01:32:29" (1/3) ... [2021-12-22 13:32:30,209 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a18874e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 01:32:30, skipping insertion in model container [2021-12-22 13:32:30,210 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:32:29" (2/3) ... [2021-12-22 13:32:30,210 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a18874e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 01:32:30, skipping insertion in model container [2021-12-22 13:32:30,210 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:32:30" (3/3) ... [2021-12-22 13:32:30,211 INFO L111 eAbstractionObserver]: Analyzing ICFG safe026_tso.i [2021-12-22 13:32:30,215 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-12-22 13:32:30,215 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 13:32:30,215 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-22 13:32:30,215 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-12-22 13:32:30,238 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:32:30,238 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:32:30,239 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:32:30,239 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:32:30,239 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:32:30,239 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:32:30,239 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:32:30,239 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:32:30,240 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:32:30,240 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:32:30,240 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:32:30,240 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:32:30,241 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:32:30,241 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:32:30,241 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:32:30,241 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:32:30,241 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:32:30,242 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:32:30,242 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:32:30,242 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:32:30,242 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:32:30,242 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:32:30,243 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:32:30,243 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:32:30,243 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:32:30,243 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:32:30,244 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:32:30,244 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:32:30,244 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:32:30,244 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:32:30,244 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:32:30,244 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:32:30,245 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:32:30,245 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:32:30,245 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:32:30,245 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:32:30,248 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:32:30,248 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:32:30,248 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:32:30,248 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:32:30,250 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:32:30,250 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:32:30,251 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:32:30,251 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:32:30,252 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:32:30,252 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:32:30,252 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:32:30,252 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:32:30,253 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-12-22 13:32:30,291 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 13:32:30,296 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 13:32:30,296 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-12-22 13:32:30,306 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 98 places, 90 transitions, 195 flow [2021-12-22 13:32:30,333 INFO L129 PetriNetUnfolder]: 2/87 cut-off events. [2021-12-22 13:32:30,333 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-12-22 13:32:30,336 INFO L84 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 87 events. 2/87 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/84 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2021-12-22 13:32:30,336 INFO L82 GeneralOperation]: Start removeDead. Operand has 98 places, 90 transitions, 195 flow [2021-12-22 13:32:30,339 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 82 places, 73 transitions, 155 flow [2021-12-22 13:32:30,353 INFO L129 PetriNetUnfolder]: 1/72 cut-off events. [2021-12-22 13:32:30,353 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-12-22 13:32:30,353 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:32:30,354 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 13:32:30,354 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 13:32:30,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:32:30,358 INFO L85 PathProgramCache]: Analyzing trace with hash 1419924202, now seen corresponding path program 1 times [2021-12-22 13:32:30,364 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:32:30,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218532404] [2021-12-22 13:32:30,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:32:30,365 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:32:30,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:32:30,788 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 13:32:30,789 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:32:30,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218532404] [2021-12-22 13:32:30,790 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218532404] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:32:30,790 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:32:30,790 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 13:32:30,792 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982882293] [2021-12-22 13:32:30,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:32:30,800 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 13:32:30,801 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:32:30,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 13:32:30,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-22 13:32:30,836 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 90 [2021-12-22 13:32:30,841 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 73 transitions, 155 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 13:32:30,841 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:32:30,842 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 90 [2021-12-22 13:32:30,842 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:32:31,055 INFO L129 PetriNetUnfolder]: 178/534 cut-off events. [2021-12-22 13:32:31,056 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2021-12-22 13:32:31,058 INFO L84 FinitePrefix]: Finished finitePrefix Result has 881 conditions, 534 events. 178/534 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2896 event pairs, 26 based on Foata normal form. 19/531 useless extension candidates. Maximal degree in co-relation 845. Up to 117 conditions per place. [2021-12-22 13:32:31,060 INFO L132 encePairwiseOnDemand]: 80/90 looper letters, 19 selfloop transitions, 5 changer transitions 35/115 dead transitions. [2021-12-22 13:32:31,061 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 115 transitions, 357 flow [2021-12-22 13:32:31,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-22 13:32:31,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-12-22 13:32:31,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 975 transitions. [2021-12-22 13:32:31,073 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8333333333333334 [2021-12-22 13:32:31,073 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 975 transitions. [2021-12-22 13:32:31,073 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 975 transitions. [2021-12-22 13:32:31,075 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:32:31,077 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 975 transitions. [2021-12-22 13:32:31,080 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 75.0) internal successors, (975), 13 states have internal predecessors, (975), 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 13:32:31,086 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 90.0) internal successors, (1260), 14 states have internal predecessors, (1260), 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 13:32:31,087 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 90.0) internal successors, (1260), 14 states have internal predecessors, (1260), 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 13:32:31,088 INFO L186 Difference]: Start difference. First operand has 82 places, 73 transitions, 155 flow. Second operand 13 states and 975 transitions. [2021-12-22 13:32:31,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 115 transitions, 357 flow [2021-12-22 13:32:31,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 115 transitions, 354 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-12-22 13:32:31,093 INFO L242 Difference]: Finished difference. Result has 103 places, 75 transitions, 222 flow [2021-12-22 13:32:31,094 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=222, PETRI_PLACES=103, PETRI_TRANSITIONS=75} [2021-12-22 13:32:31,096 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 21 predicate places. [2021-12-22 13:32:31,096 INFO L470 AbstractCegarLoop]: Abstraction has has 103 places, 75 transitions, 222 flow [2021-12-22 13:32:31,097 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 13:32:31,097 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:32:31,097 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 13:32:31,097 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-22 13:32:31,098 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 13:32:31,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:32:31,098 INFO L85 PathProgramCache]: Analyzing trace with hash 273314153, now seen corresponding path program 1 times [2021-12-22 13:32:31,098 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:32:31,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415200839] [2021-12-22 13:32:31,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:32:31,099 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:32:31,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:32:31,179 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 13:32:31,179 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:32:31,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415200839] [2021-12-22 13:32:31,180 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415200839] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:32:31,180 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:32:31,180 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 13:32:31,180 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438858529] [2021-12-22 13:32:31,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:32:31,181 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 13:32:31,181 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:32:31,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 13:32:31,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-22 13:32:31,183 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 90 [2021-12-22 13:32:31,183 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 75 transitions, 222 flow. Second operand has 7 states, 7 states have (on average 71.85714285714286) internal successors, (503), 7 states have internal predecessors, (503), 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 13:32:31,184 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:32:31,184 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 90 [2021-12-22 13:32:31,184 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:32:31,370 INFO L129 PetriNetUnfolder]: 99/391 cut-off events. [2021-12-22 13:32:31,370 INFO L130 PetriNetUnfolder]: For 830/961 co-relation queries the response was YES. [2021-12-22 13:32:31,372 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1172 conditions, 391 events. 99/391 cut-off events. For 830/961 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1965 event pairs, 10 based on Foata normal form. 12/392 useless extension candidates. Maximal degree in co-relation 1125. Up to 95 conditions per place. [2021-12-22 13:32:31,373 INFO L132 encePairwiseOnDemand]: 79/90 looper letters, 21 selfloop transitions, 12 changer transitions 34/123 dead transitions. [2021-12-22 13:32:31,373 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 123 transitions, 704 flow [2021-12-22 13:32:31,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-22 13:32:31,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-12-22 13:32:31,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 977 transitions. [2021-12-22 13:32:31,375 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8350427350427351 [2021-12-22 13:32:31,375 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 977 transitions. [2021-12-22 13:32:31,376 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 977 transitions. [2021-12-22 13:32:31,376 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:32:31,376 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 977 transitions. [2021-12-22 13:32:31,378 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 75.15384615384616) internal successors, (977), 13 states have internal predecessors, (977), 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 13:32:31,379 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 90.0) internal successors, (1260), 14 states have internal predecessors, (1260), 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 13:32:31,380 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 90.0) internal successors, (1260), 14 states have internal predecessors, (1260), 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 13:32:31,380 INFO L186 Difference]: Start difference. First operand has 103 places, 75 transitions, 222 flow. Second operand 13 states and 977 transitions. [2021-12-22 13:32:31,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 123 transitions, 704 flow [2021-12-22 13:32:31,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 123 transitions, 652 flow, removed 24 selfloop flow, removed 4 redundant places. [2021-12-22 13:32:31,386 INFO L242 Difference]: Finished difference. Result has 113 places, 80 transitions, 311 flow [2021-12-22 13:32:31,386 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=311, PETRI_PLACES=113, PETRI_TRANSITIONS=80} [2021-12-22 13:32:31,386 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 31 predicate places. [2021-12-22 13:32:31,387 INFO L470 AbstractCegarLoop]: Abstraction has has 113 places, 80 transitions, 311 flow [2021-12-22 13:32:31,387 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 71.85714285714286) internal successors, (503), 7 states have internal predecessors, (503), 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 13:32:31,387 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:32:31,387 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 13:32:31,387 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-22 13:32:31,388 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 13:32:31,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:32:31,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1950295604, now seen corresponding path program 1 times [2021-12-22 13:32:31,388 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:32:31,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719451951] [2021-12-22 13:32:31,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:32:31,389 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:32:31,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:32:31,459 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 13:32:31,459 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:32:31,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719451951] [2021-12-22 13:32:31,459 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719451951] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:32:31,460 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:32:31,460 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 13:32:31,460 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222616130] [2021-12-22 13:32:31,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:32:31,460 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 13:32:31,461 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:32:31,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 13:32:31,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 13:32:31,462 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 90 [2021-12-22 13:32:31,462 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 80 transitions, 311 flow. Second operand has 7 states, 7 states have (on average 73.85714285714286) internal successors, (517), 7 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:32:31,462 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:32:31,463 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 90 [2021-12-22 13:32:31,463 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:32:31,555 INFO L129 PetriNetUnfolder]: 62/351 cut-off events. [2021-12-22 13:32:31,556 INFO L130 PetriNetUnfolder]: For 1076/1308 co-relation queries the response was YES. [2021-12-22 13:32:31,558 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1083 conditions, 351 events. 62/351 cut-off events. For 1076/1308 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1940 event pairs, 24 based on Foata normal form. 8/335 useless extension candidates. Maximal degree in co-relation 1025. Up to 67 conditions per place. [2021-12-22 13:32:31,559 INFO L132 encePairwiseOnDemand]: 81/90 looper letters, 15 selfloop transitions, 6 changer transitions 15/95 dead transitions. [2021-12-22 13:32:31,559 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 95 transitions, 512 flow [2021-12-22 13:32:31,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-22 13:32:31,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-12-22 13:32:31,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 536 transitions. [2021-12-22 13:32:31,561 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8507936507936508 [2021-12-22 13:32:31,561 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 536 transitions. [2021-12-22 13:32:31,561 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 536 transitions. [2021-12-22 13:32:31,561 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:32:31,561 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 536 transitions. [2021-12-22 13:32:31,562 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 76.57142857142857) internal successors, (536), 7 states have internal predecessors, (536), 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 13:32:31,563 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 90.0) internal successors, (720), 8 states have internal predecessors, (720), 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 13:32:31,564 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 90.0) internal successors, (720), 8 states have internal predecessors, (720), 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 13:32:31,564 INFO L186 Difference]: Start difference. First operand has 113 places, 80 transitions, 311 flow. Second operand 7 states and 536 transitions. [2021-12-22 13:32:31,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 95 transitions, 512 flow [2021-12-22 13:32:31,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 95 transitions, 470 flow, removed 21 selfloop flow, removed 12 redundant places. [2021-12-22 13:32:31,569 INFO L242 Difference]: Finished difference. Result has 102 places, 78 transitions, 288 flow [2021-12-22 13:32:31,570 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=281, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=288, PETRI_PLACES=102, PETRI_TRANSITIONS=78} [2021-12-22 13:32:31,570 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 20 predicate places. [2021-12-22 13:32:31,570 INFO L470 AbstractCegarLoop]: Abstraction has has 102 places, 78 transitions, 288 flow [2021-12-22 13:32:31,571 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 73.85714285714286) internal successors, (517), 7 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:32:31,571 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:32:31,571 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 13:32:31,571 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-22 13:32:31,571 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 13:32:31,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:32:31,572 INFO L85 PathProgramCache]: Analyzing trace with hash -2131656236, now seen corresponding path program 2 times [2021-12-22 13:32:31,572 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:32:31,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262103625] [2021-12-22 13:32:31,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:32:31,572 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:32:31,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:32:31,637 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 13:32:31,637 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:32:31,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262103625] [2021-12-22 13:32:31,637 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262103625] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:32:31,638 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:32:31,638 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-22 13:32:31,638 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897284377] [2021-12-22 13:32:31,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:32:31,638 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 13:32:31,639 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:32:31,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 13:32:31,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-22 13:32:31,640 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 90 [2021-12-22 13:32:31,640 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 78 transitions, 288 flow. Second operand has 6 states, 6 states have (on average 74.66666666666667) internal successors, (448), 6 states have internal predecessors, (448), 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 13:32:31,640 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:32:31,640 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 90 [2021-12-22 13:32:31,641 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:32:31,797 INFO L129 PetriNetUnfolder]: 374/995 cut-off events. [2021-12-22 13:32:31,797 INFO L130 PetriNetUnfolder]: For 624/644 co-relation queries the response was YES. [2021-12-22 13:32:31,802 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2142 conditions, 995 events. 374/995 cut-off events. For 624/644 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 6945 event pairs, 26 based on Foata normal form. 0/896 useless extension candidates. Maximal degree in co-relation 2089. Up to 246 conditions per place. [2021-12-22 13:32:31,806 INFO L132 encePairwiseOnDemand]: 80/90 looper letters, 29 selfloop transitions, 17 changer transitions 0/110 dead transitions. [2021-12-22 13:32:31,807 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 110 transitions, 448 flow [2021-12-22 13:32:31,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-22 13:32:31,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-12-22 13:32:31,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 778 transitions. [2021-12-22 13:32:31,809 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8644444444444445 [2021-12-22 13:32:31,809 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 778 transitions. [2021-12-22 13:32:31,809 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 778 transitions. [2021-12-22 13:32:31,810 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:32:31,810 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 778 transitions. [2021-12-22 13:32:31,811 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 77.8) internal successors, (778), 10 states have internal predecessors, (778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:32:31,812 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 90.0) internal successors, (990), 11 states have internal predecessors, (990), 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 13:32:31,813 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 90.0) internal successors, (990), 11 states have internal predecessors, (990), 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 13:32:31,813 INFO L186 Difference]: Start difference. First operand has 102 places, 78 transitions, 288 flow. Second operand 10 states and 778 transitions. [2021-12-22 13:32:31,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 110 transitions, 448 flow [2021-12-22 13:32:31,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 110 transitions, 413 flow, removed 10 selfloop flow, removed 7 redundant places. [2021-12-22 13:32:31,819 INFO L242 Difference]: Finished difference. Result has 107 places, 93 transitions, 373 flow [2021-12-22 13:32:31,820 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=253, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=373, PETRI_PLACES=107, PETRI_TRANSITIONS=93} [2021-12-22 13:32:31,820 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 25 predicate places. [2021-12-22 13:32:31,821 INFO L470 AbstractCegarLoop]: Abstraction has has 107 places, 93 transitions, 373 flow [2021-12-22 13:32:31,821 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 74.66666666666667) internal successors, (448), 6 states have internal predecessors, (448), 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 13:32:31,821 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:32:31,822 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 13:32:31,822 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-22 13:32:31,822 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 13:32:31,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:32:31,823 INFO L85 PathProgramCache]: Analyzing trace with hash 243950234, now seen corresponding path program 1 times [2021-12-22 13:32:31,823 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:32:31,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800494218] [2021-12-22 13:32:31,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:32:31,824 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:32:31,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:32:31,932 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 13:32:31,932 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:32:31,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800494218] [2021-12-22 13:32:31,933 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800494218] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:32:31,933 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:32:31,933 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 13:32:31,933 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475020603] [2021-12-22 13:32:31,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:32:31,934 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 13:32:31,934 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:32:31,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 13:32:31,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-22 13:32:31,935 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 90 [2021-12-22 13:32:31,936 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 93 transitions, 373 flow. Second operand has 7 states, 7 states have (on average 74.57142857142857) internal successors, (522), 7 states have internal predecessors, (522), 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 13:32:31,936 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:32:31,936 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 90 [2021-12-22 13:32:31,936 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:32:32,149 INFO L129 PetriNetUnfolder]: 332/917 cut-off events. [2021-12-22 13:32:32,150 INFO L130 PetriNetUnfolder]: For 2156/2286 co-relation queries the response was YES. [2021-12-22 13:32:32,154 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3090 conditions, 917 events. 332/917 cut-off events. For 2156/2286 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 6643 event pairs, 4 based on Foata normal form. 56/912 useless extension candidates. Maximal degree in co-relation 3036. Up to 338 conditions per place. [2021-12-22 13:32:32,158 INFO L132 encePairwiseOnDemand]: 80/90 looper letters, 26 selfloop transitions, 32 changer transitions 9/131 dead transitions. [2021-12-22 13:32:32,158 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 131 transitions, 743 flow [2021-12-22 13:32:32,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-22 13:32:32,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-12-22 13:32:32,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1012 transitions. [2021-12-22 13:32:32,160 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.864957264957265 [2021-12-22 13:32:32,161 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1012 transitions. [2021-12-22 13:32:32,161 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1012 transitions. [2021-12-22 13:32:32,161 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:32:32,161 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1012 transitions. [2021-12-22 13:32:32,164 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 77.84615384615384) internal successors, (1012), 13 states have internal predecessors, (1012), 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 13:32:32,166 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 90.0) internal successors, (1260), 14 states have internal predecessors, (1260), 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 13:32:32,167 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 90.0) internal successors, (1260), 14 states have internal predecessors, (1260), 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 13:32:32,167 INFO L186 Difference]: Start difference. First operand has 107 places, 93 transitions, 373 flow. Second operand 13 states and 1012 transitions. [2021-12-22 13:32:32,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 131 transitions, 743 flow [2021-12-22 13:32:32,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 131 transitions, 741 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-12-22 13:32:32,174 INFO L242 Difference]: Finished difference. Result has 122 places, 113 transitions, 614 flow [2021-12-22 13:32:32,175 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=371, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=614, PETRI_PLACES=122, PETRI_TRANSITIONS=113} [2021-12-22 13:32:32,177 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 40 predicate places. [2021-12-22 13:32:32,177 INFO L470 AbstractCegarLoop]: Abstraction has has 122 places, 113 transitions, 614 flow [2021-12-22 13:32:32,178 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 74.57142857142857) internal successors, (522), 7 states have internal predecessors, (522), 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 13:32:32,178 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:32:32,178 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 13:32:32,178 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-22 13:32:32,178 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 13:32:32,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:32:32,179 INFO L85 PathProgramCache]: Analyzing trace with hash 1857817141, now seen corresponding path program 1 times [2021-12-22 13:32:32,179 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:32:32,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919524989] [2021-12-22 13:32:32,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:32:32,179 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:32:32,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:32:32,277 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 13:32:32,277 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:32:32,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919524989] [2021-12-22 13:32:32,277 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919524989] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:32:32,277 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:32:32,278 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-22 13:32:32,278 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719188156] [2021-12-22 13:32:32,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:32:32,278 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-22 13:32:32,278 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:32:32,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-22 13:32:32,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-22 13:32:32,279 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 90 [2021-12-22 13:32:32,280 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 113 transitions, 614 flow. Second operand has 8 states, 8 states have (on average 74.5) internal successors, (596), 8 states have internal predecessors, (596), 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 13:32:32,280 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:32:32,280 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 90 [2021-12-22 13:32:32,280 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:32:32,518 INFO L129 PetriNetUnfolder]: 259/796 cut-off events. [2021-12-22 13:32:32,519 INFO L130 PetriNetUnfolder]: For 3199/3365 co-relation queries the response was YES. [2021-12-22 13:32:32,523 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3225 conditions, 796 events. 259/796 cut-off events. For 3199/3365 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 6012 event pairs, 0 based on Foata normal form. 61/799 useless extension candidates. Maximal degree in co-relation 3165. Up to 269 conditions per place. [2021-12-22 13:32:32,525 INFO L132 encePairwiseOnDemand]: 80/90 looper letters, 22 selfloop transitions, 36 changer transitions 20/142 dead transitions. [2021-12-22 13:32:32,526 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 142 transitions, 956 flow [2021-12-22 13:32:32,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-22 13:32:32,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-12-22 13:32:32,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1230 transitions. [2021-12-22 13:32:32,528 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8541666666666666 [2021-12-22 13:32:32,528 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1230 transitions. [2021-12-22 13:32:32,529 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1230 transitions. [2021-12-22 13:32:32,529 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:32:32,529 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1230 transitions. [2021-12-22 13:32:32,531 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 76.875) internal successors, (1230), 16 states have internal predecessors, (1230), 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 13:32:32,533 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 90.0) internal successors, (1530), 17 states have internal predecessors, (1530), 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 13:32:32,533 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 90.0) internal successors, (1530), 17 states have internal predecessors, (1530), 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 13:32:32,533 INFO L186 Difference]: Start difference. First operand has 122 places, 113 transitions, 614 flow. Second operand 16 states and 1230 transitions. [2021-12-22 13:32:32,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 142 transitions, 956 flow [2021-12-22 13:32:32,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 142 transitions, 793 flow, removed 67 selfloop flow, removed 7 redundant places. [2021-12-22 13:32:32,548 INFO L242 Difference]: Finished difference. Result has 137 places, 113 transitions, 601 flow [2021-12-22 13:32:32,548 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=483, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=601, PETRI_PLACES=137, PETRI_TRANSITIONS=113} [2021-12-22 13:32:32,548 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 55 predicate places. [2021-12-22 13:32:32,549 INFO L470 AbstractCegarLoop]: Abstraction has has 137 places, 113 transitions, 601 flow [2021-12-22 13:32:32,549 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 74.5) internal successors, (596), 8 states have internal predecessors, (596), 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 13:32:32,549 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:32:32,549 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 13:32:32,549 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-22 13:32:32,550 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 13:32:32,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:32:32,550 INFO L85 PathProgramCache]: Analyzing trace with hash -290666129, now seen corresponding path program 1 times [2021-12-22 13:32:32,550 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:32:32,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661566669] [2021-12-22 13:32:32,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:32:32,551 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:32:32,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:32:32,612 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 13:32:32,613 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:32:32,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661566669] [2021-12-22 13:32:32,613 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661566669] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:32:32,613 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:32:32,613 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 13:32:32,613 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416642286] [2021-12-22 13:32:32,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:32:32,614 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 13:32:32,614 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:32:32,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 13:32:32,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 13:32:32,615 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 90 [2021-12-22 13:32:32,615 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 113 transitions, 601 flow. Second operand has 7 states, 7 states have (on average 74.85714285714286) internal successors, (524), 7 states have internal predecessors, (524), 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 13:32:32,616 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:32:32,616 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 90 [2021-12-22 13:32:32,616 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:32:32,720 INFO L129 PetriNetUnfolder]: 180/778 cut-off events. [2021-12-22 13:32:32,720 INFO L130 PetriNetUnfolder]: For 1682/1719 co-relation queries the response was YES. [2021-12-22 13:32:32,724 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2289 conditions, 778 events. 180/778 cut-off events. For 1682/1719 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 6489 event pairs, 0 based on Foata normal form. 1/731 useless extension candidates. Maximal degree in co-relation 2231. Up to 103 conditions per place. [2021-12-22 13:32:32,725 INFO L132 encePairwiseOnDemand]: 84/90 looper letters, 0 selfloop transitions, 0 changer transitions 114/114 dead transitions. [2021-12-22 13:32:32,725 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 114 transitions, 647 flow [2021-12-22 13:32:32,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-22 13:32:32,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-12-22 13:32:32,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 527 transitions. [2021-12-22 13:32:32,727 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8365079365079365 [2021-12-22 13:32:32,727 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 527 transitions. [2021-12-22 13:32:32,727 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 527 transitions. [2021-12-22 13:32:32,727 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:32:32,727 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 527 transitions. [2021-12-22 13:32:32,728 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 75.28571428571429) internal successors, (527), 7 states have internal predecessors, (527), 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 13:32:32,729 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 90.0) internal successors, (720), 8 states have internal predecessors, (720), 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 13:32:32,729 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 90.0) internal successors, (720), 8 states have internal predecessors, (720), 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 13:32:32,730 INFO L186 Difference]: Start difference. First operand has 137 places, 113 transitions, 601 flow. Second operand 7 states and 527 transitions. [2021-12-22 13:32:32,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 114 transitions, 647 flow [2021-12-22 13:32:32,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 114 transitions, 572 flow, removed 13 selfloop flow, removed 14 redundant places. [2021-12-22 13:32:32,741 INFO L242 Difference]: Finished difference. Result has 124 places, 0 transitions, 0 flow [2021-12-22 13:32:32,742 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=528, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=124, PETRI_TRANSITIONS=0} [2021-12-22 13:32:32,742 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 42 predicate places. [2021-12-22 13:32:32,742 INFO L470 AbstractCegarLoop]: Abstraction has has 124 places, 0 transitions, 0 flow [2021-12-22 13:32:32,743 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 74.85714285714286) internal successors, (524), 7 states have internal predecessors, (524), 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 13:32:32,745 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2021-12-22 13:32:32,745 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 4 remaining) [2021-12-22 13:32:32,745 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (1 of 4 remaining) [2021-12-22 13:32:32,745 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION (0 of 4 remaining) [2021-12-22 13:32:32,746 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-22 13:32:32,748 INFO L732 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1] [2021-12-22 13:32:32,750 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-12-22 13:32:32,750 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-22 13:32:32,752 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 01:32:32 BasicIcfg [2021-12-22 13:32:32,752 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-22 13:32:32,753 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-22 13:32:32,753 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-22 13:32:32,753 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-22 13:32:32,754 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:32:30" (3/4) ... [2021-12-22 13:32:32,755 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-12-22 13:32:32,760 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2021-12-22 13:32:32,760 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2021-12-22 13:32:32,760 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2021-12-22 13:32:32,764 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2021-12-22 13:32:32,764 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-12-22 13:32:32,765 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-12-22 13:32:32,765 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-12-22 13:32:32,798 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-22 13:32:32,799 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-22 13:32:32,799 INFO L158 Benchmark]: Toolchain (without parser) took 3523.12ms. Allocated memory was 169.9MB in the beginning and 230.7MB in the end (delta: 60.8MB). Free memory was 139.6MB in the beginning and 105.9MB in the end (delta: 33.7MB). Peak memory consumption was 92.9MB. Max. memory is 16.1GB. [2021-12-22 13:32:32,800 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 86.0MB. Free memory was 44.3MB in the beginning and 44.3MB in the end (delta: 41.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-22 13:32:32,800 INFO L158 Benchmark]: CACSL2BoogieTranslator took 495.52ms. Allocated memory is still 169.9MB. Free memory was 139.6MB in the beginning and 137.6MB in the end (delta: 2.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-22 13:32:32,800 INFO L158 Benchmark]: Boogie Procedure Inliner took 51.27ms. Allocated memory is still 169.9MB. Free memory was 137.6MB in the beginning and 135.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-22 13:32:32,800 INFO L158 Benchmark]: Boogie Preprocessor took 41.92ms. Allocated memory is still 169.9MB. Free memory was 135.6MB in the beginning and 134.4MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-22 13:32:32,800 INFO L158 Benchmark]: RCFGBuilder took 328.46ms. Allocated memory is still 169.9MB. Free memory was 134.4MB in the beginning and 121.7MB in the end (delta: 12.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-22 13:32:32,801 INFO L158 Benchmark]: TraceAbstraction took 2546.77ms. Allocated memory was 169.9MB in the beginning and 230.7MB in the end (delta: 60.8MB). Free memory was 121.7MB in the beginning and 108.0MB in the end (delta: 13.7MB). Peak memory consumption was 76.4MB. Max. memory is 16.1GB. [2021-12-22 13:32:32,801 INFO L158 Benchmark]: Witness Printer took 45.94ms. Allocated memory is still 230.7MB. Free memory was 108.0MB in the beginning and 105.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-22 13:32:32,802 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 86.0MB. Free memory was 44.3MB in the beginning and 44.3MB in the end (delta: 41.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 495.52ms. Allocated memory is still 169.9MB. Free memory was 139.6MB in the beginning and 137.6MB in the end (delta: 2.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 51.27ms. Allocated memory is still 169.9MB. Free memory was 137.6MB in the beginning and 135.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 41.92ms. Allocated memory is still 169.9MB. Free memory was 135.6MB in the beginning and 134.4MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 328.46ms. Allocated memory is still 169.9MB. Free memory was 134.4MB in the beginning and 121.7MB in the end (delta: 12.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 2546.77ms. Allocated memory was 169.9MB in the beginning and 230.7MB in the end (delta: 60.8MB). Free memory was 121.7MB in the beginning and 108.0MB in the end (delta: 13.7MB). Peak memory consumption was 76.4MB. Max. memory is 16.1GB. * Witness Printer took 45.94ms. Allocated memory is still 230.7MB. Free memory was 108.0MB in the beginning and 105.9MB 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, 112 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: 2.5s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 277 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 277 mSDsluCounter, 328 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 342 mSDsCounter, 88 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 449 IncrementalHoareTripleChecker+Invalid, 537 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 88 mSolverCounterUnsat, 79 mSDtfsCounter, 449 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 97 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=614occurred in iteration=5, InterpolantAutomatonStates: 79, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 411 NumberOfCodeBlocks, 411 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 404 ConstructedInterpolants, 0 QuantifiedInterpolants, 1520 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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 13:32:32,846 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