./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe035_pso.oepc_pso.opt_rmo.oepc_rmo.opt_tso.oepc_tso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ff03de63 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/safe035_pso.oepc_pso.opt_rmo.oepc_rmo.opt_tso.oepc_tso.opt.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 fb302bfc042709458f72100356b9fd74bb7921271e539fc7dcbd801222f139c8 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 15:07:16,061 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 15:07:16,067 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 15:07:16,095 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 15:07:16,095 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 15:07:16,096 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 15:07:16,097 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 15:07:16,098 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 15:07:16,099 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 15:07:16,099 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 15:07:16,100 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 15:07:16,101 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 15:07:16,101 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 15:07:16,101 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 15:07:16,102 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 15:07:16,103 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 15:07:16,103 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 15:07:16,104 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 15:07:16,105 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 15:07:16,107 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 15:07:16,108 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 15:07:16,109 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 15:07:16,109 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 15:07:16,110 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 15:07:16,112 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 15:07:16,112 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 15:07:16,112 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 15:07:16,113 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 15:07:16,113 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 15:07:16,114 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 15:07:16,114 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 15:07:16,114 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 15:07:16,115 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 15:07:16,116 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 15:07:16,117 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 15:07:16,118 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 15:07:16,118 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 15:07:16,118 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 15:07:16,118 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 15:07:16,119 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 15:07:16,119 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 15:07:16,120 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-21 15:07:16,140 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 15:07:16,141 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 15:07:16,141 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 15:07:16,141 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 15:07:16,141 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 15:07:16,142 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 15:07:16,142 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 15:07:16,142 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 15:07:16,142 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 15:07:16,143 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 15:07:16,143 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-21 15:07:16,143 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 15:07:16,143 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-21 15:07:16,143 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 15:07:16,143 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 15:07:16,143 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 15:07:16,144 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 15:07:16,144 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-21 15:07:16,144 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 15:07:16,144 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 15:07:16,144 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 15:07:16,144 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 15:07:16,144 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 15:07:16,145 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 15:07:16,145 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 15:07:16,145 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 15:07:16,145 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 15:07:16,145 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 15:07:16,145 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 15:07:16,146 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 15:07:16,146 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-21 15:07:16,146 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-21 15:07:16,146 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 15:07:16,146 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 15:07:16,146 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fb302bfc042709458f72100356b9fd74bb7921271e539fc7dcbd801222f139c8 [2021-12-21 15:07:16,288 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 15:07:16,304 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 15:07:16,306 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 15:07:16,307 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 15:07:16,311 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 15:07:16,312 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe035_pso.oepc_pso.opt_rmo.oepc_rmo.opt_tso.oepc_tso.opt.i [2021-12-21 15:07:16,372 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/feb7e82bd/4eb7336922d4421bb64c2587a009de18/FLAGd21c59043 [2021-12-21 15:07:16,808 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 15:07:16,809 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe035_pso.oepc_pso.opt_rmo.oepc_rmo.opt_tso.oepc_tso.opt.i [2021-12-21 15:07:16,825 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/feb7e82bd/4eb7336922d4421bb64c2587a009de18/FLAGd21c59043 [2021-12-21 15:07:17,335 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/feb7e82bd/4eb7336922d4421bb64c2587a009de18 [2021-12-21 15:07:17,337 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 15:07:17,337 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 15:07:17,339 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 15:07:17,339 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 15:07:17,343 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 15:07:17,344 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 03:07:17" (1/1) ... [2021-12-21 15:07:17,344 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7474724c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:07:17, skipping insertion in model container [2021-12-21 15:07:17,345 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 03:07:17" (1/1) ... [2021-12-21 15:07:17,349 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 15:07:17,370 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 15:07:17,481 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/safe035_pso.oepc_pso.opt_rmo.oepc_rmo.opt_tso.oepc_tso.opt.i[992,1005] [2021-12-21 15:07:17,568 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 15:07:17,573 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 15:07:17,588 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/safe035_pso.oepc_pso.opt_rmo.oepc_rmo.opt_tso.oepc_tso.opt.i[992,1005] [2021-12-21 15:07:17,627 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 15:07:17,657 INFO L208 MainTranslator]: Completed translation [2021-12-21 15:07:17,657 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:07:17 WrapperNode [2021-12-21 15:07:17,658 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 15:07:17,659 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 15:07:17,659 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 15:07:17,659 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 15:07:17,664 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:07:17" (1/1) ... [2021-12-21 15:07:17,674 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:07:17" (1/1) ... [2021-12-21 15:07:17,692 INFO L137 Inliner]: procedures = 176, calls = 59, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 71 [2021-12-21 15:07:17,693 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 15:07:17,694 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 15:07:17,694 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 15:07:17,694 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 15:07:17,699 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:07:17" (1/1) ... [2021-12-21 15:07:17,699 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:07:17" (1/1) ... [2021-12-21 15:07:17,714 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:07:17" (1/1) ... [2021-12-21 15:07:17,716 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:07:17" (1/1) ... [2021-12-21 15:07:17,719 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:07:17" (1/1) ... [2021-12-21 15:07:17,727 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:07:17" (1/1) ... [2021-12-21 15:07:17,728 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:07:17" (1/1) ... [2021-12-21 15:07:17,730 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 15:07:17,734 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 15:07:17,734 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 15:07:17,734 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 15:07:17,736 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:07:17" (1/1) ... [2021-12-21 15:07:17,740 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 15:07:17,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:07:17,757 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) [2021-12-21 15:07:17,762 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 [2021-12-21 15:07:17,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-21 15:07:17,782 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-12-21 15:07:17,782 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 15:07:17,783 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-21 15:07:17,783 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-21 15:07:17,783 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-12-21 15:07:17,783 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-12-21 15:07:17,783 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-12-21 15:07:17,783 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-12-21 15:07:17,784 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-12-21 15:07:17,784 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-12-21 15:07:17,784 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 15:07:17,784 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-12-21 15:07:17,784 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 15:07:17,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 15:07:17,785 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-12-21 15:07:17,878 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 15:07:17,879 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 15:07:18,004 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 15:07:18,010 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 15:07:18,010 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-21 15:07:18,012 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 03:07:18 BoogieIcfgContainer [2021-12-21 15:07:18,012 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 15:07:18,013 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 15:07:18,013 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 15:07:18,017 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 15:07:18,017 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 03:07:17" (1/3) ... [2021-12-21 15:07:18,017 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45ba33ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 03:07:18, skipping insertion in model container [2021-12-21 15:07:18,018 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:07:17" (2/3) ... [2021-12-21 15:07:18,018 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45ba33ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 03:07:18, skipping insertion in model container [2021-12-21 15:07:18,018 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 03:07:18" (3/3) ... [2021-12-21 15:07:18,019 INFO L111 eAbstractionObserver]: Analyzing ICFG safe035_pso.oepc_pso.opt_rmo.oepc_rmo.opt_tso.oepc_tso.opt.i [2021-12-21 15:07:18,022 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-12-21 15:07:18,022 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 15:07:18,023 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-21 15:07:18,023 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-12-21 15:07:18,055 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:18,055 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:18,055 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:18,055 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:18,056 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:18,056 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:18,056 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:18,056 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:18,056 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:18,057 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:18,057 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:18,057 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:18,057 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:18,058 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:18,058 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:18,058 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:18,058 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:18,058 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:18,059 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:18,059 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:18,059 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:18,060 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:18,060 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:18,061 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:18,061 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:18,061 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:18,062 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:18,062 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:18,062 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:18,062 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:18,063 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:18,063 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:18,063 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:18,063 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:18,064 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:18,064 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:18,066 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:18,066 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:18,066 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:18,066 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:18,068 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:18,068 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:18,068 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:18,068 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:18,076 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:18,077 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:18,078 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:18,078 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:07:18,078 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-12-21 15:07:18,109 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 15:07:18,118 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 [2021-12-21 15:07:18,119 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-12-21 15:07:18,129 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 100 places, 92 transitions, 199 flow [2021-12-21 15:07:18,179 INFO L129 PetriNetUnfolder]: 2/89 cut-off events. [2021-12-21 15:07:18,179 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-12-21 15:07:18,184 INFO L84 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 89 events. 2/89 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/86 useless extension candidates. Maximal degree in co-relation 68. Up to 2 conditions per place. [2021-12-21 15:07:18,185 INFO L82 GeneralOperation]: Start removeDead. Operand has 100 places, 92 transitions, 199 flow [2021-12-21 15:07:18,187 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 84 places, 75 transitions, 159 flow [2021-12-21 15:07:18,215 INFO L129 PetriNetUnfolder]: 1/74 cut-off events. [2021-12-21 15:07:18,216 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-12-21 15:07:18,216 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:07:18,216 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:07:18,217 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-21 15:07:18,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:07:18,220 INFO L85 PathProgramCache]: Analyzing trace with hash -1426205310, now seen corresponding path program 1 times [2021-12-21 15:07:18,226 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:07:18,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557522259] [2021-12-21 15:07:18,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:07:18,227 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:07:18,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:07:18,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 15:07:18,540 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:07:18,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557522259] [2021-12-21 15:07:18,540 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557522259] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:07:18,540 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:07:18,541 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 15:07:18,542 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653206415] [2021-12-21 15:07:18,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:07:18,548 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 15:07:18,548 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:07:18,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 15:07:18,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-21 15:07:18,568 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 92 [2021-12-21 15:07:18,571 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 75 transitions, 159 flow. Second operand has 6 states, 6 states have (on average 72.16666666666667) internal successors, (433), 6 states have internal predecessors, (433), 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) [2021-12-21 15:07:18,571 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 15:07:18,571 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 92 [2021-12-21 15:07:18,572 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 15:07:18,879 INFO L129 PetriNetUnfolder]: 376/1042 cut-off events. [2021-12-21 15:07:18,880 INFO L130 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2021-12-21 15:07:18,883 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1713 conditions, 1042 events. 376/1042 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 6754 event pairs, 48 based on Foata normal form. 34/1036 useless extension candidates. Maximal degree in co-relation 1675. Up to 203 conditions per place. [2021-12-21 15:07:18,887 INFO L132 encePairwiseOnDemand]: 81/92 looper letters, 22 selfloop transitions, 6 changer transitions 34/118 dead transitions. [2021-12-21 15:07:18,888 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 118 transitions, 375 flow [2021-12-21 15:07:18,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-21 15:07:18,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-12-21 15:07:18,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 696 transitions. [2021-12-21 15:07:18,899 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8405797101449275 [2021-12-21 15:07:18,899 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 696 transitions. [2021-12-21 15:07:18,899 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 696 transitions. [2021-12-21 15:07:18,901 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 15:07:18,910 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 696 transitions. [2021-12-21 15:07:18,917 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 77.33333333333333) internal successors, (696), 9 states have internal predecessors, (696), 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) [2021-12-21 15:07:18,923 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 92.0) internal successors, (920), 10 states have internal predecessors, (920), 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) [2021-12-21 15:07:18,923 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 92.0) internal successors, (920), 10 states have internal predecessors, (920), 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) [2021-12-21 15:07:18,925 INFO L186 Difference]: Start difference. First operand has 84 places, 75 transitions, 159 flow. Second operand 9 states and 696 transitions. [2021-12-21 15:07:18,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 118 transitions, 375 flow [2021-12-21 15:07:18,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 118 transitions, 370 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-12-21 15:07:18,930 INFO L242 Difference]: Finished difference. Result has 97 places, 78 transitions, 232 flow [2021-12-21 15:07:18,931 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=232, PETRI_PLACES=97, PETRI_TRANSITIONS=78} [2021-12-21 15:07:18,933 INFO L334 CegarLoopForPetriNet]: 84 programPoint places, 13 predicate places. [2021-12-21 15:07:18,933 INFO L470 AbstractCegarLoop]: Abstraction has has 97 places, 78 transitions, 232 flow [2021-12-21 15:07:18,934 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 72.16666666666667) internal successors, (433), 6 states have internal predecessors, (433), 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) [2021-12-21 15:07:18,934 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:07:18,934 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:07:18,934 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-21 15:07:18,935 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-21 15:07:18,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:07:18,935 INFO L85 PathProgramCache]: Analyzing trace with hash -380875965, now seen corresponding path program 1 times [2021-12-21 15:07:18,935 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:07:18,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315006547] [2021-12-21 15:07:18,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:07:18,936 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:07:18,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:07:19,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 15:07:19,046 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:07:19,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315006547] [2021-12-21 15:07:19,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315006547] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:07:19,046 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:07:19,046 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 15:07:19,047 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788239298] [2021-12-21 15:07:19,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:07:19,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 15:07:19,048 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:07:19,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 15:07:19,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-21 15:07:19,050 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 92 [2021-12-21 15:07:19,051 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 78 transitions, 232 flow. Second operand has 6 states, 6 states have (on average 78.66666666666667) internal successors, (472), 6 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:07:19,051 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 15:07:19,051 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 92 [2021-12-21 15:07:19,051 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 15:07:19,196 INFO L129 PetriNetUnfolder]: 105/489 cut-off events. [2021-12-21 15:07:19,196 INFO L130 PetriNetUnfolder]: For 707/811 co-relation queries the response was YES. [2021-12-21 15:07:19,200 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1186 conditions, 489 events. 105/489 cut-off events. For 707/811 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2989 event pairs, 33 based on Foata normal form. 21/474 useless extension candidates. Maximal degree in co-relation 1144. Up to 111 conditions per place. [2021-12-21 15:07:19,201 INFO L132 encePairwiseOnDemand]: 86/92 looper letters, 9 selfloop transitions, 3 changer transitions 13/91 dead transitions. [2021-12-21 15:07:19,201 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 91 transitions, 362 flow [2021-12-21 15:07:19,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-21 15:07:19,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-12-21 15:07:19,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 716 transitions. [2021-12-21 15:07:19,207 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8647342995169082 [2021-12-21 15:07:19,207 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 716 transitions. [2021-12-21 15:07:19,207 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 716 transitions. [2021-12-21 15:07:19,208 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 15:07:19,208 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 716 transitions. [2021-12-21 15:07:19,210 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 79.55555555555556) internal successors, (716), 9 states have internal predecessors, (716), 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) [2021-12-21 15:07:19,213 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 92.0) internal successors, (920), 10 states have internal predecessors, (920), 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) [2021-12-21 15:07:19,213 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 92.0) internal successors, (920), 10 states have internal predecessors, (920), 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) [2021-12-21 15:07:19,214 INFO L186 Difference]: Start difference. First operand has 97 places, 78 transitions, 232 flow. Second operand 9 states and 716 transitions. [2021-12-21 15:07:19,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 91 transitions, 362 flow [2021-12-21 15:07:19,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 91 transitions, 344 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-12-21 15:07:19,222 INFO L242 Difference]: Finished difference. Result has 104 places, 78 transitions, 243 flow [2021-12-21 15:07:19,222 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=243, PETRI_PLACES=104, PETRI_TRANSITIONS=78} [2021-12-21 15:07:19,223 INFO L334 CegarLoopForPetriNet]: 84 programPoint places, 20 predicate places. [2021-12-21 15:07:19,223 INFO L470 AbstractCegarLoop]: Abstraction has has 104 places, 78 transitions, 243 flow [2021-12-21 15:07:19,223 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 78.66666666666667) internal successors, (472), 6 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:07:19,223 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:07:19,224 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:07:19,224 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-21 15:07:19,224 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-21 15:07:19,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:07:19,225 INFO L85 PathProgramCache]: Analyzing trace with hash -2033570468, now seen corresponding path program 1 times [2021-12-21 15:07:19,225 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:07:19,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159178101] [2021-12-21 15:07:19,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:07:19,226 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:07:19,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:07:19,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 15:07:19,347 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:07:19,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159178101] [2021-12-21 15:07:19,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159178101] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:07:19,348 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:07:19,348 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 15:07:19,348 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75006571] [2021-12-21 15:07:19,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:07:19,349 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 15:07:19,349 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:07:19,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 15:07:19,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-21 15:07:19,351 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 92 [2021-12-21 15:07:19,352 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 78 transitions, 243 flow. Second operand has 6 states, 6 states have (on average 76.66666666666667) internal successors, (460), 6 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:07:19,352 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 15:07:19,352 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 92 [2021-12-21 15:07:19,352 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 15:07:19,520 INFO L129 PetriNetUnfolder]: 466/1264 cut-off events. [2021-12-21 15:07:19,521 INFO L130 PetriNetUnfolder]: For 483/505 co-relation queries the response was YES. [2021-12-21 15:07:19,526 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2547 conditions, 1264 events. 466/1264 cut-off events. For 483/505 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 9840 event pairs, 26 based on Foata normal form. 8/1140 useless extension candidates. Maximal degree in co-relation 2498. Up to 333 conditions per place. [2021-12-21 15:07:19,530 INFO L132 encePairwiseOnDemand]: 82/92 looper letters, 29 selfloop transitions, 17 changer transitions 0/110 dead transitions. [2021-12-21 15:07:19,530 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 110 transitions, 403 flow [2021-12-21 15:07:19,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-21 15:07:19,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-12-21 15:07:19,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 798 transitions. [2021-12-21 15:07:19,532 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8673913043478261 [2021-12-21 15:07:19,532 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 798 transitions. [2021-12-21 15:07:19,532 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 798 transitions. [2021-12-21 15:07:19,532 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 15:07:19,532 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 798 transitions. [2021-12-21 15:07:19,534 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 79.8) internal successors, (798), 10 states have internal predecessors, (798), 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) [2021-12-21 15:07:19,535 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 92.0) internal successors, (1012), 11 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) [2021-12-21 15:07:19,535 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 92.0) internal successors, (1012), 11 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) [2021-12-21 15:07:19,535 INFO L186 Difference]: Start difference. First operand has 104 places, 78 transitions, 243 flow. Second operand 10 states and 798 transitions. [2021-12-21 15:07:19,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 110 transitions, 403 flow [2021-12-21 15:07:19,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 110 transitions, 379 flow, removed 9 selfloop flow, removed 8 redundant places. [2021-12-21 15:07:19,539 INFO L242 Difference]: Finished difference. Result has 105 places, 93 transitions, 339 flow [2021-12-21 15:07:19,539 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=219, PETRI_DIFFERENCE_MINUEND_PLACES=90, 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=339, PETRI_PLACES=105, PETRI_TRANSITIONS=93} [2021-12-21 15:07:19,540 INFO L334 CegarLoopForPetriNet]: 84 programPoint places, 21 predicate places. [2021-12-21 15:07:19,540 INFO L470 AbstractCegarLoop]: Abstraction has has 105 places, 93 transitions, 339 flow [2021-12-21 15:07:19,540 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 76.66666666666667) internal successors, (460), 6 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 15:07:19,540 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:07:19,540 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] [2021-12-21 15:07:19,540 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-21 15:07:19,540 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-21 15:07:19,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:07:19,541 INFO L85 PathProgramCache]: Analyzing trace with hash 523491721, now seen corresponding path program 1 times [2021-12-21 15:07:19,541 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:07:19,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276750982] [2021-12-21 15:07:19,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:07:19,541 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:07:19,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:07:19,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 15:07:19,607 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:07:19,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276750982] [2021-12-21 15:07:19,607 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276750982] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:07:19,607 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:07:19,607 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 15:07:19,607 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469949682] [2021-12-21 15:07:19,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:07:19,608 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 15:07:19,608 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:07:19,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 15:07:19,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-21 15:07:19,612 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 92 [2021-12-21 15:07:19,612 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 93 transitions, 339 flow. Second operand has 7 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) [2021-12-21 15:07:19,612 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 15:07:19,613 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 92 [2021-12-21 15:07:19,613 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 15:07:19,816 INFO L129 PetriNetUnfolder]: 434/1218 cut-off events. [2021-12-21 15:07:19,816 INFO L130 PetriNetUnfolder]: For 2618/2967 co-relation queries the response was YES. [2021-12-21 15:07:19,823 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4058 conditions, 1218 events. 434/1218 cut-off events. For 2618/2967 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 9864 event pairs, 10 based on Foata normal form. 121/1248 useless extension candidates. Maximal degree in co-relation 4008. Up to 425 conditions per place. [2021-12-21 15:07:19,827 INFO L132 encePairwiseOnDemand]: 82/92 looper letters, 26 selfloop transitions, 32 changer transitions 9/131 dead transitions. [2021-12-21 15:07:19,827 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 131 transitions, 709 flow [2021-12-21 15:07:19,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-21 15:07:19,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-12-21 15:07:19,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1038 transitions. [2021-12-21 15:07:19,830 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8678929765886287 [2021-12-21 15:07:19,830 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1038 transitions. [2021-12-21 15:07:19,830 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1038 transitions. [2021-12-21 15:07:19,831 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 15:07:19,831 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1038 transitions. [2021-12-21 15:07:19,832 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 79.84615384615384) internal successors, (1038), 13 states have internal predecessors, (1038), 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) [2021-12-21 15:07:19,834 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 92.0) internal successors, (1288), 14 states have internal predecessors, (1288), 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) [2021-12-21 15:07:19,834 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 92.0) internal successors, (1288), 14 states have internal predecessors, (1288), 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) [2021-12-21 15:07:19,835 INFO L186 Difference]: Start difference. First operand has 105 places, 93 transitions, 339 flow. Second operand 13 states and 1038 transitions. [2021-12-21 15:07:19,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 131 transitions, 709 flow [2021-12-21 15:07:19,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 131 transitions, 689 flow, removed 9 selfloop flow, removed 4 redundant places. [2021-12-21 15:07:19,845 INFO L242 Difference]: Finished difference. Result has 117 places, 113 transitions, 562 flow [2021-12-21 15:07:19,846 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=319, PETRI_DIFFERENCE_MINUEND_PLACES=101, 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=562, PETRI_PLACES=117, PETRI_TRANSITIONS=113} [2021-12-21 15:07:19,847 INFO L334 CegarLoopForPetriNet]: 84 programPoint places, 33 predicate places. [2021-12-21 15:07:19,847 INFO L470 AbstractCegarLoop]: Abstraction has has 117 places, 113 transitions, 562 flow [2021-12-21 15:07:19,847 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 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) [2021-12-21 15:07:19,847 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:07:19,848 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:07:19,848 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-21 15:07:19,848 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-21 15:07:19,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:07:19,850 INFO L85 PathProgramCache]: Analyzing trace with hash 144108594, now seen corresponding path program 1 times [2021-12-21 15:07:19,850 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:07:19,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880493618] [2021-12-21 15:07:19,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:07:19,851 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:07:19,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:07:19,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 15:07:19,963 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:07:19,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880493618] [2021-12-21 15:07:19,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880493618] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:07:19,964 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:07:19,964 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-21 15:07:19,964 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247382782] [2021-12-21 15:07:19,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:07:19,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-21 15:07:19,965 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:07:19,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-21 15:07:19,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-21 15:07:19,967 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 92 [2021-12-21 15:07:19,967 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 113 transitions, 562 flow. Second operand has 8 states, 8 states have (on average 76.5) internal successors, (612), 8 states have internal predecessors, (612), 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) [2021-12-21 15:07:19,968 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 15:07:19,968 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 92 [2021-12-21 15:07:19,968 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 15:07:20,235 INFO L129 PetriNetUnfolder]: 389/1125 cut-off events. [2021-12-21 15:07:20,236 INFO L130 PetriNetUnfolder]: For 4333/4678 co-relation queries the response was YES. [2021-12-21 15:07:20,241 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4477 conditions, 1125 events. 389/1125 cut-off events. For 4333/4678 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 9355 event pairs, 6 based on Foata normal form. 100/1119 useless extension candidates. Maximal degree in co-relation 4424. Up to 366 conditions per place. [2021-12-21 15:07:20,245 INFO L132 encePairwiseOnDemand]: 82/92 looper letters, 20 selfloop transitions, 36 changer transitions 22/142 dead transitions. [2021-12-21 15:07:20,245 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 142 transitions, 904 flow [2021-12-21 15:07:20,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-21 15:07:20,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-12-21 15:07:20,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1262 transitions. [2021-12-21 15:07:20,248 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8573369565217391 [2021-12-21 15:07:20,248 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1262 transitions. [2021-12-21 15:07:20,248 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1262 transitions. [2021-12-21 15:07:20,248 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 15:07:20,248 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1262 transitions. [2021-12-21 15:07:20,252 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 78.875) internal successors, (1262), 16 states have internal predecessors, (1262), 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) [2021-12-21 15:07:20,254 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 92.0) internal successors, (1564), 17 states have internal predecessors, (1564), 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) [2021-12-21 15:07:20,254 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 92.0) internal successors, (1564), 17 states have internal predecessors, (1564), 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) [2021-12-21 15:07:20,254 INFO L186 Difference]: Start difference. First operand has 117 places, 113 transitions, 562 flow. Second operand 16 states and 1262 transitions. [2021-12-21 15:07:20,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 142 transitions, 904 flow [2021-12-21 15:07:20,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 142 transitions, 741 flow, removed 67 selfloop flow, removed 10 redundant places. [2021-12-21 15:07:20,278 INFO L242 Difference]: Finished difference. Result has 129 places, 113 transitions, 549 flow [2021-12-21 15:07:20,278 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=431, PETRI_DIFFERENCE_MINUEND_PLACES=107, 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=549, PETRI_PLACES=129, PETRI_TRANSITIONS=113} [2021-12-21 15:07:20,279 INFO L334 CegarLoopForPetriNet]: 84 programPoint places, 45 predicate places. [2021-12-21 15:07:20,279 INFO L470 AbstractCegarLoop]: Abstraction has has 129 places, 113 transitions, 549 flow [2021-12-21 15:07:20,279 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 76.5) internal successors, (612), 8 states have internal predecessors, (612), 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) [2021-12-21 15:07:20,280 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:07:20,280 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, 1, 1] [2021-12-21 15:07:20,280 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-21 15:07:20,280 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-21 15:07:20,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:07:20,281 INFO L85 PathProgramCache]: Analyzing trace with hash -1780862248, now seen corresponding path program 1 times [2021-12-21 15:07:20,281 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:07:20,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178452783] [2021-12-21 15:07:20,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:07:20,281 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:07:20,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:07:20,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 15:07:20,358 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:07:20,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178452783] [2021-12-21 15:07:20,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178452783] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:07:20,358 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:07:20,358 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 15:07:20,358 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042720801] [2021-12-21 15:07:20,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:07:20,359 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 15:07:20,359 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:07:20,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 15:07:20,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 15:07:20,360 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 92 [2021-12-21 15:07:20,360 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 113 transitions, 549 flow. Second operand has 7 states, 7 states have (on average 70.85714285714286) internal successors, (496), 7 states have internal predecessors, (496), 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) [2021-12-21 15:07:20,361 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 15:07:20,361 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 92 [2021-12-21 15:07:20,361 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 15:07:20,522 INFO L129 PetriNetUnfolder]: 258/1132 cut-off events. [2021-12-21 15:07:20,522 INFO L130 PetriNetUnfolder]: For 2114/2145 co-relation queries the response was YES. [2021-12-21 15:07:20,527 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3221 conditions, 1132 events. 258/1132 cut-off events. For 2114/2145 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 10297 event pairs, 2 based on Foata normal form. 4/1078 useless extension candidates. Maximal degree in co-relation 3177. Up to 121 conditions per place. [2021-12-21 15:07:20,529 INFO L132 encePairwiseOnDemand]: 81/92 looper letters, 0 selfloop transitions, 0 changer transitions 126/126 dead transitions. [2021-12-21 15:07:20,529 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 126 transitions, 679 flow [2021-12-21 15:07:20,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-21 15:07:20,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-12-21 15:07:20,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 580 transitions. [2021-12-21 15:07:20,531 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7880434782608695 [2021-12-21 15:07:20,531 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 580 transitions. [2021-12-21 15:07:20,531 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 580 transitions. [2021-12-21 15:07:20,532 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 15:07:20,532 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 580 transitions. [2021-12-21 15:07:20,533 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 72.5) internal successors, (580), 8 states have internal predecessors, (580), 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) [2021-12-21 15:07:20,534 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 92.0) internal successors, (828), 9 states have internal predecessors, (828), 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) [2021-12-21 15:07:20,534 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 92.0) internal successors, (828), 9 states have internal predecessors, (828), 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) [2021-12-21 15:07:20,535 INFO L186 Difference]: Start difference. First operand has 129 places, 113 transitions, 549 flow. Second operand 8 states and 580 transitions. [2021-12-21 15:07:20,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 126 transitions, 679 flow [2021-12-21 15:07:20,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 126 transitions, 622 flow, removed 4 selfloop flow, removed 11 redundant places. [2021-12-21 15:07:20,549 INFO L242 Difference]: Finished difference. Result has 120 places, 0 transitions, 0 flow [2021-12-21 15:07:20,549 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=488, PETRI_DIFFERENCE_MINUEND_PLACES=113, 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=8, PETRI_FLOW=0, PETRI_PLACES=120, PETRI_TRANSITIONS=0} [2021-12-21 15:07:20,551 INFO L334 CegarLoopForPetriNet]: 84 programPoint places, 36 predicate places. [2021-12-21 15:07:20,551 INFO L470 AbstractCegarLoop]: Abstraction has has 120 places, 0 transitions, 0 flow [2021-12-21 15:07:20,551 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 70.85714285714286) internal successors, (496), 7 states have internal predecessors, (496), 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) [2021-12-21 15:07:20,553 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2021-12-21 15:07:20,554 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 4 remaining) [2021-12-21 15:07:20,554 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (1 of 4 remaining) [2021-12-21 15:07:20,554 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION (0 of 4 remaining) [2021-12-21 15:07:20,554 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-21 15:07:20,557 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2021-12-21 15:07:20,558 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-12-21 15:07:20,558 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-21 15:07:20,563 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.12 03:07:20 BasicIcfg [2021-12-21 15:07:20,563 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-21 15:07:20,568 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-21 15:07:20,568 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-21 15:07:20,568 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-21 15:07:20,568 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 03:07:18" (3/4) ... [2021-12-21 15:07:20,570 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-12-21 15:07:20,575 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2021-12-21 15:07:20,575 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2021-12-21 15:07:20,575 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2021-12-21 15:07:20,579 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2021-12-21 15:07:20,579 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-12-21 15:07:20,579 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-12-21 15:07:20,579 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-12-21 15:07:20,603 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-21 15:07:20,603 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-21 15:07:20,604 INFO L158 Benchmark]: Toolchain (without parser) took 3266.41ms. Allocated memory was 104.9MB in the beginning and 159.4MB in the end (delta: 54.5MB). Free memory was 73.3MB in the beginning and 67.3MB in the end (delta: 6.0MB). Peak memory consumption was 59.0MB. Max. memory is 16.1GB. [2021-12-21 15:07:20,604 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 83.9MB. Free memory is still 40.5MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-21 15:07:20,604 INFO L158 Benchmark]: CACSL2BoogieTranslator took 318.73ms. Allocated memory is still 104.9MB. Free memory was 72.8MB in the beginning and 71.3MB in the end (delta: 1.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-21 15:07:20,605 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.12ms. Allocated memory is still 104.9MB. Free memory was 71.3MB in the beginning and 69.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-21 15:07:20,605 INFO L158 Benchmark]: Boogie Preprocessor took 40.03ms. Allocated memory is still 104.9MB. Free memory was 69.2MB in the beginning and 68.2MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-21 15:07:20,605 INFO L158 Benchmark]: RCFGBuilder took 278.16ms. Allocated memory is still 104.9MB. Free memory was 68.2MB in the beginning and 55.6MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-21 15:07:20,605 INFO L158 Benchmark]: TraceAbstraction took 2551.99ms. Allocated memory was 104.9MB in the beginning and 159.4MB in the end (delta: 54.5MB). Free memory was 55.1MB in the beginning and 70.4MB in the end (delta: -15.4MB). Peak memory consumption was 42.3MB. Max. memory is 16.1GB. [2021-12-21 15:07:20,606 INFO L158 Benchmark]: Witness Printer took 35.90ms. Allocated memory is still 159.4MB. Free memory was 70.4MB in the beginning and 67.3MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-21 15:07:20,607 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 83.9MB. Free memory is still 40.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 318.73ms. Allocated memory is still 104.9MB. Free memory was 72.8MB in the beginning and 71.3MB in the end (delta: 1.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.12ms. Allocated memory is still 104.9MB. Free memory was 71.3MB in the beginning and 69.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 40.03ms. Allocated memory is still 104.9MB. Free memory was 69.2MB in the beginning and 68.2MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 278.16ms. Allocated memory is still 104.9MB. Free memory was 68.2MB in the beginning and 55.6MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 2551.99ms. Allocated memory was 104.9MB in the beginning and 159.4MB in the end (delta: 54.5MB). Free memory was 55.1MB in the beginning and 70.4MB in the end (delta: -15.4MB). Peak memory consumption was 42.3MB. Max. memory is 16.1GB. * Witness Printer took 35.90ms. Allocated memory is still 159.4MB. Free memory was 70.4MB in the beginning and 67.3MB in the end (delta: 3.1MB). 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, 115 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: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 209 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 209 mSDsluCounter, 241 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 263 mSDsCounter, 96 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 394 IncrementalHoareTripleChecker+Invalid, 490 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 96 mSolverCounterUnsat, 58 mSDtfsCounter, 394 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 79 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=562occurred in iteration=4, InterpolantAutomatonStates: 65, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 363 NumberOfCodeBlocks, 363 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 357 ConstructedInterpolants, 0 QuantifiedInterpolants, 1631 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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! [2021-12-21 15:07:20,630 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE