./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe020_pso.oepc_pso.opt_tso.oepc_tso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c 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/safe020_pso.oepc_pso.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 8e0b8e6efb6fc18f3ca2ba094d3acbfc6a07fbc0100e70485e3a3a84ea56105b --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 10:09:53,063 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 10:09:53,066 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 10:09:53,110 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 10:09:53,111 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 10:09:53,112 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 10:09:53,114 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 10:09:53,116 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 10:09:53,118 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 10:09:53,122 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 10:09:53,123 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 10:09:53,125 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 10:09:53,125 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 10:09:53,127 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 10:09:53,128 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 10:09:53,131 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 10:09:53,132 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 10:09:53,133 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 10:09:53,134 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 10:09:53,139 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 10:09:53,141 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 10:09:53,142 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 10:09:53,143 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 10:09:53,144 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 10:09:53,145 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 10:09:53,152 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 10:09:53,152 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 10:09:53,152 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 10:09:53,154 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 10:09:53,154 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 10:09:53,155 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 10:09:53,155 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 10:09:53,157 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 10:09:53,158 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 10:09:53,158 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 10:09:53,159 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 10:09:53,160 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 10:09:53,161 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 10:09:53,161 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 10:09:53,162 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 10:09:53,162 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 10:09:53,164 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 10:09:53,166 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 10:09:53,183 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 10:09:53,184 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 10:09:53,184 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 10:09:53,184 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 10:09:53,185 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 10:09:53,185 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 10:09:53,185 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 10:09:53,185 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 10:09:53,186 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 10:09:53,186 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 10:09:53,186 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 10:09:53,186 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 10:09:53,186 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 10:09:53,186 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 10:09:53,187 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 10:09:53,187 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 10:09:53,187 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 10:09:53,187 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 10:09:53,187 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 10:09:53,188 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 10:09:53,189 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 10:09:53,189 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 10:09:53,189 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 10:09:53,189 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 10:09:53,189 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 10:09:53,190 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 10:09:53,190 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 10:09:53,190 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 10:09:53,190 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 10:09:53,191 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 10:09:53,191 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 10:09:53,191 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 10:09:53,191 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 10:09:53,192 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8e0b8e6efb6fc18f3ca2ba094d3acbfc6a07fbc0100e70485e3a3a84ea56105b [2022-07-12 10:09:53,420 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 10:09:53,443 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 10:09:53,445 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 10:09:53,447 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 10:09:53,447 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 10:09:53,448 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe020_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-07-12 10:09:53,498 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a76a8d2dd/c0d960c478c14ab3a66c7e49e4ff100b/FLAGda198e1a5 [2022-07-12 10:09:53,991 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 10:09:53,994 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe020_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-07-12 10:09:54,015 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a76a8d2dd/c0d960c478c14ab3a66c7e49e4ff100b/FLAGda198e1a5 [2022-07-12 10:09:54,363 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a76a8d2dd/c0d960c478c14ab3a66c7e49e4ff100b [2022-07-12 10:09:54,366 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 10:09:54,367 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 10:09:54,373 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 10:09:54,374 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 10:09:54,376 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 10:09:54,377 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 10:09:54" (1/1) ... [2022-07-12 10:09:54,378 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a324834 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:09:54, skipping insertion in model container [2022-07-12 10:09:54,378 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 10:09:54" (1/1) ... [2022-07-12 10:09:54,384 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 10:09:54,435 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 10:09:54,593 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/safe020_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2022-07-12 10:09:54,756 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 10:09:54,763 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 10:09:54,778 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/safe020_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2022-07-12 10:09:54,824 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 10:09:54,860 INFO L208 MainTranslator]: Completed translation [2022-07-12 10:09:54,860 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:09:54 WrapperNode [2022-07-12 10:09:54,860 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 10:09:54,861 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 10:09:54,862 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 10:09:54,862 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 10:09:54,868 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:09:54" (1/1) ... [2022-07-12 10:09:54,900 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:09:54" (1/1) ... [2022-07-12 10:09:54,923 INFO L137 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 70 [2022-07-12 10:09:54,923 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 10:09:54,924 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 10:09:54,925 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 10:09:54,925 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 10:09:54,931 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:09:54" (1/1) ... [2022-07-12 10:09:54,931 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:09:54" (1/1) ... [2022-07-12 10:09:54,945 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:09:54" (1/1) ... [2022-07-12 10:09:54,946 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:09:54" (1/1) ... [2022-07-12 10:09:54,955 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:09:54" (1/1) ... [2022-07-12 10:09:54,964 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:09:54" (1/1) ... [2022-07-12 10:09:54,965 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:09:54" (1/1) ... [2022-07-12 10:09:54,971 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 10:09:54,977 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 10:09:54,977 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 10:09:54,977 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 10:09:54,979 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:09:54" (1/1) ... [2022-07-12 10:09:54,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 10:09:54,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:09:55,008 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) [2022-07-12 10:09:55,033 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 [2022-07-12 10:09:55,057 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-12 10:09:55,058 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-07-12 10:09:55,058 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 10:09:55,058 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-12 10:09:55,058 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-12 10:09:55,058 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-07-12 10:09:55,058 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-07-12 10:09:55,059 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-07-12 10:09:55,059 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-07-12 10:09:55,059 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-07-12 10:09:55,059 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-07-12 10:09:55,059 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 10:09:55,059 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-07-12 10:09:55,059 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 10:09:55,060 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 10:09:55,061 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-12 10:09:55,172 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 10:09:55,174 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 10:09:55,303 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 10:09:55,309 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 10:09:55,309 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-12 10:09:55,311 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:09:55 BoogieIcfgContainer [2022-07-12 10:09:55,311 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 10:09:55,313 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 10:09:55,313 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 10:09:55,321 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 10:09:55,321 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 10:09:54" (1/3) ... [2022-07-12 10:09:55,322 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37a249f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 10:09:55, skipping insertion in model container [2022-07-12 10:09:55,322 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:09:54" (2/3) ... [2022-07-12 10:09:55,323 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37a249f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 10:09:55, skipping insertion in model container [2022-07-12 10:09:55,323 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:09:55" (3/3) ... [2022-07-12 10:09:55,324 INFO L111 eAbstractionObserver]: Analyzing ICFG safe020_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-07-12 10:09:55,329 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-12 10:09:55,337 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 10:09:55,337 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 10:09:55,337 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-12 10:09:55,394 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-12 10:09:55,429 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 98 places, 90 transitions, 195 flow [2022-07-12 10:09:55,463 INFO L129 PetriNetUnfolder]: 2/87 cut-off events. [2022-07-12 10:09:55,463 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-12 10:09:55,466 INFO L84 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 87 events. 2/87 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/84 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2022-07-12 10:09:55,466 INFO L82 GeneralOperation]: Start removeDead. Operand has 98 places, 90 transitions, 195 flow [2022-07-12 10:09:55,470 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 82 places, 73 transitions, 155 flow [2022-07-12 10:09:55,484 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 10:09:55,491 INFO L357 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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@4d135855, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@61c32b88 [2022-07-12 10:09:55,492 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-07-12 10:09:55,521 INFO L129 PetriNetUnfolder]: 1/72 cut-off events. [2022-07-12 10:09:55,521 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-12 10:09:55,522 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:09:55,522 INFO L200 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] [2022-07-12 10:09:55,523 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:09:55,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:09:55,527 INFO L85 PathProgramCache]: Analyzing trace with hash -36302498, now seen corresponding path program 1 times [2022-07-12 10:09:55,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:09:55,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005733329] [2022-07-12 10:09:55,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:09:55,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:09:55,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:09:56,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:09:56,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:09:56,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005733329] [2022-07-12 10:09:56,017 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005733329] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:09:56,017 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:09:56,018 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 10:09:56,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525770290] [2022-07-12 10:09:56,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:09:56,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 10:09:56,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:09:56,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 10:09:56,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 10:09:56,066 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 90 [2022-07-12 10:09:56,069 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 73 transitions, 155 flow. Second operand has 6 states, 6 states have (on average 72.0) internal successors, (432), 6 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:09:56,069 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:09:56,069 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 90 [2022-07-12 10:09:56,070 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:09:56,372 INFO L129 PetriNetUnfolder]: 104/398 cut-off events. [2022-07-12 10:09:56,373 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-07-12 10:09:56,388 INFO L84 FinitePrefix]: Finished finitePrefix Result has 636 conditions, 398 events. 104/398 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1940 event pairs, 34 based on Foata normal form. 15/400 useless extension candidates. Maximal degree in co-relation 600. Up to 95 conditions per place. [2022-07-12 10:09:56,392 INFO L132 encePairwiseOnDemand]: 80/90 looper letters, 20 selfloop transitions, 5 changer transitions 28/109 dead transitions. [2022-07-12 10:09:56,392 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 109 transitions, 339 flow [2022-07-12 10:09:56,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 10:09:56,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-12 10:09:56,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 687 transitions. [2022-07-12 10:09:56,409 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8481481481481481 [2022-07-12 10:09:56,410 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 687 transitions. [2022-07-12 10:09:56,410 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 687 transitions. [2022-07-12 10:09:56,412 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:09:56,414 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 687 transitions. [2022-07-12 10:09:56,418 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 76.33333333333333) internal successors, (687), 9 states have internal predecessors, (687), 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) [2022-07-12 10:09:56,425 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 90.0) internal successors, (900), 10 states have internal predecessors, (900), 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) [2022-07-12 10:09:56,426 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 90.0) internal successors, (900), 10 states have internal predecessors, (900), 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) [2022-07-12 10:09:56,428 INFO L186 Difference]: Start difference. First operand has 82 places, 73 transitions, 155 flow. Second operand 9 states and 687 transitions. [2022-07-12 10:09:56,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 109 transitions, 339 flow [2022-07-12 10:09:56,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 109 transitions, 334 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-07-12 10:09:56,434 INFO L242 Difference]: Finished difference. Result has 94 places, 75 transitions, 209 flow [2022-07-12 10:09:56,436 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=209, PETRI_PLACES=94, PETRI_TRANSITIONS=75} [2022-07-12 10:09:56,439 INFO L279 CegarLoopForPetriNet]: 82 programPoint places, 12 predicate places. [2022-07-12 10:09:56,439 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 75 transitions, 209 flow [2022-07-12 10:09:56,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 72.0) internal successors, (432), 6 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:09:56,440 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:09:56,440 INFO L200 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] [2022-07-12 10:09:56,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 10:09:56,441 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:09:56,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:09:56,442 INFO L85 PathProgramCache]: Analyzing trace with hash -1861666273, now seen corresponding path program 1 times [2022-07-12 10:09:56,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:09:56,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363297784] [2022-07-12 10:09:56,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:09:56,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:09:56,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:09:56,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:09:56,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:09:56,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363297784] [2022-07-12 10:09:56,543 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363297784] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:09:56,544 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:09:56,545 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 10:09:56,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003499953] [2022-07-12 10:09:56,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:09:56,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 10:09:56,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:09:56,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 10:09:56,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 10:09:56,549 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 90 [2022-07-12 10:09:56,550 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 75 transitions, 209 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) [2022-07-12 10:09:56,550 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:09:56,550 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 90 [2022-07-12 10:09:56,550 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:09:56,659 INFO L129 PetriNetUnfolder]: 29/207 cut-off events. [2022-07-12 10:09:56,660 INFO L130 PetriNetUnfolder]: For 257/289 co-relation queries the response was YES. [2022-07-12 10:09:56,663 INFO L84 FinitePrefix]: Finished finitePrefix Result has 472 conditions, 207 events. 29/207 cut-off events. For 257/289 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 834 event pairs, 16 based on Foata normal form. 4/198 useless extension candidates. Maximal degree in co-relation 432. Up to 47 conditions per place. [2022-07-12 10:09:56,664 INFO L132 encePairwiseOnDemand]: 84/90 looper letters, 9 selfloop transitions, 3 changer transitions 10/85 dead transitions. [2022-07-12 10:09:56,664 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 85 transitions, 315 flow [2022-07-12 10:09:56,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 10:09:56,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-12 10:09:56,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 698 transitions. [2022-07-12 10:09:56,667 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8617283950617284 [2022-07-12 10:09:56,667 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 698 transitions. [2022-07-12 10:09:56,667 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 698 transitions. [2022-07-12 10:09:56,668 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:09:56,668 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 698 transitions. [2022-07-12 10:09:56,670 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 77.55555555555556) internal successors, (698), 9 states have internal predecessors, (698), 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) [2022-07-12 10:09:56,673 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 90.0) internal successors, (900), 10 states have internal predecessors, (900), 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) [2022-07-12 10:09:56,673 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 90.0) internal successors, (900), 10 states have internal predecessors, (900), 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) [2022-07-12 10:09:56,673 INFO L186 Difference]: Start difference. First operand has 94 places, 75 transitions, 209 flow. Second operand 9 states and 698 transitions. [2022-07-12 10:09:56,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 85 transitions, 315 flow [2022-07-12 10:09:56,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 85 transitions, 296 flow, removed 7 selfloop flow, removed 4 redundant places. [2022-07-12 10:09:56,680 INFO L242 Difference]: Finished difference. Result has 99 places, 75 transitions, 221 flow [2022-07-12 10:09:56,681 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=221, PETRI_PLACES=99, PETRI_TRANSITIONS=75} [2022-07-12 10:09:56,682 INFO L279 CegarLoopForPetriNet]: 82 programPoint places, 17 predicate places. [2022-07-12 10:09:56,682 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 75 transitions, 221 flow [2022-07-12 10:09:56,682 INFO L496 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) [2022-07-12 10:09:56,683 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:09:56,683 INFO L200 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] [2022-07-12 10:09:56,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 10:09:56,683 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:09:56,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:09:56,684 INFO L85 PathProgramCache]: Analyzing trace with hash 121104541, now seen corresponding path program 1 times [2022-07-12 10:09:56,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:09:56,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014576260] [2022-07-12 10:09:56,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:09:56,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:09:56,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:09:56,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:09:56,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:09:56,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014576260] [2022-07-12 10:09:56,854 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014576260] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:09:56,854 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:09:56,855 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 10:09:56,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255179750] [2022-07-12 10:09:56,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:09:56,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 10:09:56,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:09:56,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 10:09:56,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 10:09:56,858 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 90 [2022-07-12 10:09:56,859 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 75 transitions, 221 flow. Second operand has 7 states, 7 states have (on average 70.0) internal successors, (490), 7 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:09:56,859 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:09:56,859 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 90 [2022-07-12 10:09:56,859 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:09:57,255 INFO L129 PetriNetUnfolder]: 234/708 cut-off events. [2022-07-12 10:09:57,256 INFO L130 PetriNetUnfolder]: For 1059/1465 co-relation queries the response was YES. [2022-07-12 10:09:57,259 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1875 conditions, 708 events. 234/708 cut-off events. For 1059/1465 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 4199 event pairs, 5 based on Foata normal form. 20/712 useless extension candidates. Maximal degree in co-relation 1827. Up to 133 conditions per place. [2022-07-12 10:09:57,263 INFO L132 encePairwiseOnDemand]: 79/90 looper letters, 35 selfloop transitions, 16 changer transitions 62/167 dead transitions. [2022-07-12 10:09:57,263 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 167 transitions, 1011 flow [2022-07-12 10:09:57,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-12 10:09:57,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-12 10:09:57,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1257 transitions. [2022-07-12 10:09:57,268 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8215686274509804 [2022-07-12 10:09:57,268 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1257 transitions. [2022-07-12 10:09:57,269 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1257 transitions. [2022-07-12 10:09:57,270 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:09:57,270 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1257 transitions. [2022-07-12 10:09:57,274 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 73.94117647058823) internal successors, (1257), 17 states have internal predecessors, (1257), 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) [2022-07-12 10:09:57,277 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 90.0) internal successors, (1620), 18 states have internal predecessors, (1620), 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) [2022-07-12 10:09:57,278 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 90.0) internal successors, (1620), 18 states have internal predecessors, (1620), 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) [2022-07-12 10:09:57,278 INFO L186 Difference]: Start difference. First operand has 99 places, 75 transitions, 221 flow. Second operand 17 states and 1257 transitions. [2022-07-12 10:09:57,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 167 transitions, 1011 flow [2022-07-12 10:09:57,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 167 transitions, 921 flow, removed 40 selfloop flow, removed 8 redundant places. [2022-07-12 10:09:57,290 INFO L242 Difference]: Finished difference. Result has 117 places, 86 transitions, 407 flow [2022-07-12 10:09:57,290 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=203, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=407, PETRI_PLACES=117, PETRI_TRANSITIONS=86} [2022-07-12 10:09:57,292 INFO L279 CegarLoopForPetriNet]: 82 programPoint places, 35 predicate places. [2022-07-12 10:09:57,293 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 86 transitions, 407 flow [2022-07-12 10:09:57,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 70.0) internal successors, (490), 7 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:09:57,293 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:09:57,294 INFO L200 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] [2022-07-12 10:09:57,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 10:09:57,294 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:09:57,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:09:57,295 INFO L85 PathProgramCache]: Analyzing trace with hash -1758235172, now seen corresponding path program 1 times [2022-07-12 10:09:57,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:09:57,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500432450] [2022-07-12 10:09:57,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:09:57,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:09:57,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:09:57,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:09:57,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:09:57,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500432450] [2022-07-12 10:09:57,480 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500432450] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:09:57,480 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:09:57,480 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 10:09:57,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627925375] [2022-07-12 10:09:57,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:09:57,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 10:09:57,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:09:57,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 10:09:57,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-12 10:09:57,483 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 90 [2022-07-12 10:09:57,484 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 86 transitions, 407 flow. Second operand has 8 states, 8 states have (on average 69.875) internal successors, (559), 8 states have internal predecessors, (559), 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) [2022-07-12 10:09:57,484 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:09:57,484 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 90 [2022-07-12 10:09:57,485 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:09:57,677 INFO L129 PetriNetUnfolder]: 126/456 cut-off events. [2022-07-12 10:09:57,677 INFO L130 PetriNetUnfolder]: For 3508/3995 co-relation queries the response was YES. [2022-07-12 10:09:57,680 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1924 conditions, 456 events. 126/456 cut-off events. For 3508/3995 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 2337 event pairs, 6 based on Foata normal form. 18/456 useless extension candidates. Maximal degree in co-relation 1864. Up to 96 conditions per place. [2022-07-12 10:09:57,682 INFO L132 encePairwiseOnDemand]: 79/90 looper letters, 22 selfloop transitions, 9 changer transitions 44/129 dead transitions. [2022-07-12 10:09:57,682 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 129 transitions, 1055 flow [2022-07-12 10:09:57,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-12 10:09:57,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-07-12 10:09:57,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 805 transitions. [2022-07-12 10:09:57,685 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8131313131313131 [2022-07-12 10:09:57,685 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 805 transitions. [2022-07-12 10:09:57,685 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 805 transitions. [2022-07-12 10:09:57,686 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:09:57,686 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 805 transitions. [2022-07-12 10:09:57,688 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 73.18181818181819) internal successors, (805), 11 states have internal predecessors, (805), 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) [2022-07-12 10:09:57,690 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 90.0) internal successors, (1080), 12 states have internal predecessors, (1080), 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) [2022-07-12 10:09:57,690 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 90.0) internal successors, (1080), 12 states have internal predecessors, (1080), 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) [2022-07-12 10:09:57,690 INFO L186 Difference]: Start difference. First operand has 117 places, 86 transitions, 407 flow. Second operand 11 states and 805 transitions. [2022-07-12 10:09:57,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 129 transitions, 1055 flow [2022-07-12 10:09:57,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 129 transitions, 851 flow, removed 102 selfloop flow, removed 9 redundant places. [2022-07-12 10:09:57,701 INFO L242 Difference]: Finished difference. Result has 115 places, 78 transitions, 313 flow [2022-07-12 10:09:57,701 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=361, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=313, PETRI_PLACES=115, PETRI_TRANSITIONS=78} [2022-07-12 10:09:57,704 INFO L279 CegarLoopForPetriNet]: 82 programPoint places, 33 predicate places. [2022-07-12 10:09:57,709 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 78 transitions, 313 flow [2022-07-12 10:09:57,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 69.875) internal successors, (559), 8 states have internal predecessors, (559), 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) [2022-07-12 10:09:57,709 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:09:57,710 INFO L200 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] [2022-07-12 10:09:57,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 10:09:57,710 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:09:57,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:09:57,711 INFO L85 PathProgramCache]: Analyzing trace with hash 1823871966, now seen corresponding path program 1 times [2022-07-12 10:09:57,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:09:57,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840982167] [2022-07-12 10:09:57,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:09:57,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:09:57,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:09:57,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:09:57,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:09:57,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840982167] [2022-07-12 10:09:57,828 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840982167] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:09:57,828 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:09:57,828 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 10:09:57,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100767556] [2022-07-12 10:09:57,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:09:57,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 10:09:57,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:09:57,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 10:09:57,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 10:09:57,830 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 90 [2022-07-12 10:09:57,831 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 78 transitions, 313 flow. Second operand has 6 states, 6 states have (on average 75.66666666666667) internal successors, (454), 6 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:09:57,831 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:09:57,831 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 90 [2022-07-12 10:09:57,831 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:09:57,960 INFO L129 PetriNetUnfolder]: 43/258 cut-off events. [2022-07-12 10:09:57,961 INFO L130 PetriNetUnfolder]: For 1039/1184 co-relation queries the response was YES. [2022-07-12 10:09:57,962 INFO L84 FinitePrefix]: Finished finitePrefix Result has 857 conditions, 258 events. 43/258 cut-off events. For 1039/1184 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1117 event pairs, 19 based on Foata normal form. 10/259 useless extension candidates. Maximal degree in co-relation 833. Up to 48 conditions per place. [2022-07-12 10:09:57,965 INFO L132 encePairwiseOnDemand]: 83/90 looper letters, 13 selfloop transitions, 5 changer transitions 19/100 dead transitions. [2022-07-12 10:09:57,965 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 100 transitions, 591 flow [2022-07-12 10:09:57,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 10:09:57,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-12 10:09:57,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 703 transitions. [2022-07-12 10:09:57,967 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8679012345679012 [2022-07-12 10:09:57,968 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 703 transitions. [2022-07-12 10:09:57,968 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 703 transitions. [2022-07-12 10:09:57,968 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:09:57,968 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 703 transitions. [2022-07-12 10:09:57,970 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 78.11111111111111) internal successors, (703), 9 states have internal predecessors, (703), 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) [2022-07-12 10:09:57,972 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 90.0) internal successors, (900), 10 states have internal predecessors, (900), 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) [2022-07-12 10:09:57,973 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 90.0) internal successors, (900), 10 states have internal predecessors, (900), 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) [2022-07-12 10:09:57,973 INFO L186 Difference]: Start difference. First operand has 115 places, 78 transitions, 313 flow. Second operand 9 states and 703 transitions. [2022-07-12 10:09:57,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 100 transitions, 591 flow [2022-07-12 10:09:57,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 100 transitions, 448 flow, removed 29 selfloop flow, removed 15 redundant places. [2022-07-12 10:09:57,979 INFO L242 Difference]: Finished difference. Result has 109 places, 79 transitions, 284 flow [2022-07-12 10:09:57,979 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=284, PETRI_PLACES=109, PETRI_TRANSITIONS=79} [2022-07-12 10:09:57,981 INFO L279 CegarLoopForPetriNet]: 82 programPoint places, 27 predicate places. [2022-07-12 10:09:57,981 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 79 transitions, 284 flow [2022-07-12 10:09:57,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 75.66666666666667) internal successors, (454), 6 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:09:57,982 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:09:57,982 INFO L200 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] [2022-07-12 10:09:57,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 10:09:57,983 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:09:57,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:09:57,984 INFO L85 PathProgramCache]: Analyzing trace with hash -1531363553, now seen corresponding path program 1 times [2022-07-12 10:09:57,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:09:57,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140987372] [2022-07-12 10:09:57,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:09:57,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:09:58,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:09:58,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:09:58,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:09:58,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140987372] [2022-07-12 10:09:58,081 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140987372] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:09:58,081 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:09:58,081 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 10:09:58,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686735593] [2022-07-12 10:09:58,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:09:58,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 10:09:58,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:09:58,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 10:09:58,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 10:09:58,085 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 90 [2022-07-12 10:09:58,086 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 79 transitions, 284 flow. Second operand has 6 states, 6 states have (on average 74.66666666666667) internal successors, (448), 6 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:09:58,086 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:09:58,086 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 90 [2022-07-12 10:09:58,086 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:09:58,290 INFO L129 PetriNetUnfolder]: 330/891 cut-off events. [2022-07-12 10:09:58,290 INFO L130 PetriNetUnfolder]: For 693/720 co-relation queries the response was YES. [2022-07-12 10:09:58,294 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1902 conditions, 891 events. 330/891 cut-off events. For 693/720 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 5876 event pairs, 22 based on Foata normal form. 1/803 useless extension candidates. Maximal degree in co-relation 1882. Up to 229 conditions per place. [2022-07-12 10:09:58,297 INFO L132 encePairwiseOnDemand]: 80/90 looper letters, 29 selfloop transitions, 17 changer transitions 0/111 dead transitions. [2022-07-12 10:09:58,297 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 111 transitions, 444 flow [2022-07-12 10:09:58,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 10:09:58,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-12 10:09:58,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 778 transitions. [2022-07-12 10:09:58,300 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8644444444444445 [2022-07-12 10:09:58,300 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 778 transitions. [2022-07-12 10:09:58,300 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 778 transitions. [2022-07-12 10:09:58,301 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:09:58,301 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 778 transitions. [2022-07-12 10:09:58,303 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 77.8) internal successors, (778), 10 states have internal predecessors, (778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:09:58,305 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 90.0) internal successors, (990), 11 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:09:58,305 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 90.0) internal successors, (990), 11 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:09:58,306 INFO L186 Difference]: Start difference. First operand has 109 places, 79 transitions, 284 flow. Second operand 10 states and 778 transitions. [2022-07-12 10:09:58,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 111 transitions, 444 flow [2022-07-12 10:09:58,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 111 transitions, 423 flow, removed 6 selfloop flow, removed 5 redundant places. [2022-07-12 10:09:58,310 INFO L242 Difference]: Finished difference. Result has 113 places, 94 transitions, 383 flow [2022-07-12 10:09:58,310 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=263, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=383, PETRI_PLACES=113, PETRI_TRANSITIONS=94} [2022-07-12 10:09:58,313 INFO L279 CegarLoopForPetriNet]: 82 programPoint places, 31 predicate places. [2022-07-12 10:09:58,313 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 94 transitions, 383 flow [2022-07-12 10:09:58,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 74.66666666666667) internal successors, (448), 6 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:09:58,314 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:09:58,314 INFO L200 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] [2022-07-12 10:09:58,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 10:09:58,314 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:09:58,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:09:58,315 INFO L85 PathProgramCache]: Analyzing trace with hash -1966547127, now seen corresponding path program 1 times [2022-07-12 10:09:58,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:09:58,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097156819] [2022-07-12 10:09:58,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:09:58,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:09:58,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:09:58,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:09:58,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:09:58,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097156819] [2022-07-12 10:09:58,408 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097156819] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:09:58,408 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:09:58,408 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 10:09:58,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208831452] [2022-07-12 10:09:58,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:09:58,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 10:09:58,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:09:58,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 10:09:58,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 10:09:58,411 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 90 [2022-07-12 10:09:58,411 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 94 transitions, 383 flow. Second operand has 7 states, 7 states have (on average 74.57142857142857) internal successors, (522), 7 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:09:58,411 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:09:58,412 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 90 [2022-07-12 10:09:58,412 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:09:58,649 INFO L129 PetriNetUnfolder]: 308/840 cut-off events. [2022-07-12 10:09:58,649 INFO L130 PetriNetUnfolder]: For 2014/2154 co-relation queries the response was YES. [2022-07-12 10:09:58,654 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2874 conditions, 840 events. 308/840 cut-off events. For 2014/2154 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 5630 event pairs, 5 based on Foata normal form. 46/827 useless extension candidates. Maximal degree in co-relation 2853. Up to 316 conditions per place. [2022-07-12 10:09:58,658 INFO L132 encePairwiseOnDemand]: 80/90 looper letters, 26 selfloop transitions, 32 changer transitions 9/132 dead transitions. [2022-07-12 10:09:58,658 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 132 transitions, 753 flow [2022-07-12 10:09:58,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-12 10:09:58,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-12 10:09:58,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1012 transitions. [2022-07-12 10:09:58,662 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.864957264957265 [2022-07-12 10:09:58,662 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1012 transitions. [2022-07-12 10:09:58,662 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1012 transitions. [2022-07-12 10:09:58,663 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:09:58,663 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1012 transitions. [2022-07-12 10:09:58,665 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 77.84615384615384) internal successors, (1012), 13 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:09:58,683 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 90.0) internal successors, (1260), 14 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:09:58,683 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 90.0) internal successors, (1260), 14 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:09:58,684 INFO L186 Difference]: Start difference. First operand has 113 places, 94 transitions, 383 flow. Second operand 13 states and 1012 transitions. [2022-07-12 10:09:58,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 132 transitions, 753 flow [2022-07-12 10:09:58,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 132 transitions, 751 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-12 10:09:58,690 INFO L242 Difference]: Finished difference. Result has 128 places, 114 transitions, 624 flow [2022-07-12 10:09:58,690 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=381, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=624, PETRI_PLACES=128, PETRI_TRANSITIONS=114} [2022-07-12 10:09:58,692 INFO L279 CegarLoopForPetriNet]: 82 programPoint places, 46 predicate places. [2022-07-12 10:09:58,692 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 114 transitions, 624 flow [2022-07-12 10:09:58,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 74.57142857142857) internal successors, (522), 7 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:09:58,692 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:09:58,693 INFO L200 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] [2022-07-12 10:09:58,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-12 10:09:58,693 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:09:58,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:09:58,694 INFO L85 PathProgramCache]: Analyzing trace with hash -1988358362, now seen corresponding path program 1 times [2022-07-12 10:09:58,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:09:58,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911392003] [2022-07-12 10:09:58,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:09:58,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:09:58,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:09:58,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:09:58,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:09:58,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911392003] [2022-07-12 10:09:58,795 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911392003] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:09:58,796 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:09:58,796 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 10:09:58,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301911709] [2022-07-12 10:09:58,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:09:58,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 10:09:58,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:09:58,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 10:09:58,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-12 10:09:58,799 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 90 [2022-07-12 10:09:58,799 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 114 transitions, 624 flow. Second operand has 8 states, 8 states have (on average 74.5) internal successors, (596), 8 states have internal predecessors, (596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:09:58,800 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:09:58,800 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 90 [2022-07-12 10:09:58,800 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:09:59,068 INFO L129 PetriNetUnfolder]: 232/713 cut-off events. [2022-07-12 10:09:59,069 INFO L130 PetriNetUnfolder]: For 2702/2844 co-relation queries the response was YES. [2022-07-12 10:09:59,072 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2897 conditions, 713 events. 232/713 cut-off events. For 2702/2844 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 5087 event pairs, 2 based on Foata normal form. 40/696 useless extension candidates. Maximal degree in co-relation 2872. Up to 242 conditions per place. [2022-07-12 10:09:59,075 INFO L132 encePairwiseOnDemand]: 80/90 looper letters, 20 selfloop transitions, 36 changer transitions 22/143 dead transitions. [2022-07-12 10:09:59,075 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 143 transitions, 966 flow [2022-07-12 10:09:59,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-12 10:09:59,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-12 10:09:59,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1230 transitions. [2022-07-12 10:09:59,078 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8541666666666666 [2022-07-12 10:09:59,079 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1230 transitions. [2022-07-12 10:09:59,079 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1230 transitions. [2022-07-12 10:09:59,080 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:09:59,080 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1230 transitions. [2022-07-12 10:09:59,083 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 76.875) internal successors, (1230), 16 states have internal predecessors, (1230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:09:59,086 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 90.0) internal successors, (1530), 17 states have internal predecessors, (1530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:09:59,087 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 90.0) internal successors, (1530), 17 states have internal predecessors, (1530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:09:59,087 INFO L186 Difference]: Start difference. First operand has 128 places, 114 transitions, 624 flow. Second operand 16 states and 1230 transitions. [2022-07-12 10:09:59,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 143 transitions, 966 flow [2022-07-12 10:09:59,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 143 transitions, 795 flow, removed 71 selfloop flow, removed 10 redundant places. [2022-07-12 10:09:59,116 INFO L242 Difference]: Finished difference. Result has 140 places, 114 transitions, 603 flow [2022-07-12 10:09:59,117 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=485, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=603, PETRI_PLACES=140, PETRI_TRANSITIONS=114} [2022-07-12 10:09:59,118 INFO L279 CegarLoopForPetriNet]: 82 programPoint places, 58 predicate places. [2022-07-12 10:09:59,118 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 114 transitions, 603 flow [2022-07-12 10:09:59,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 74.5) internal successors, (596), 8 states have internal predecessors, (596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:09:59,119 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:09:59,119 INFO L200 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] [2022-07-12 10:09:59,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-12 10:09:59,119 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:09:59,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:09:59,120 INFO L85 PathProgramCache]: Analyzing trace with hash -1279801259, now seen corresponding path program 1 times [2022-07-12 10:09:59,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:09:59,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567665771] [2022-07-12 10:09:59,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:09:59,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:09:59,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:09:59,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:09:59,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:09:59,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567665771] [2022-07-12 10:09:59,206 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567665771] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:09:59,206 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:09:59,206 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 10:09:59,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825968397] [2022-07-12 10:09:59,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:09:59,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 10:09:59,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:09:59,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 10:09:59,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 10:09:59,209 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 90 [2022-07-12 10:09:59,209 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 114 transitions, 603 flow. Second operand has 7 states, 7 states have (on average 70.57142857142857) internal successors, (494), 7 states have internal predecessors, (494), 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) [2022-07-12 10:09:59,209 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:09:59,210 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 90 [2022-07-12 10:09:59,210 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:09:59,350 INFO L129 PetriNetUnfolder]: 148/676 cut-off events. [2022-07-12 10:09:59,350 INFO L130 PetriNetUnfolder]: For 1392/1419 co-relation queries the response was YES. [2022-07-12 10:09:59,354 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1992 conditions, 676 events. 148/676 cut-off events. For 1392/1419 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 5249 event pairs, 0 based on Foata normal form. 1/651 useless extension candidates. Maximal degree in co-relation 1966. Up to 74 conditions per place. [2022-07-12 10:09:59,356 INFO L132 encePairwiseOnDemand]: 80/90 looper letters, 0 selfloop transitions, 0 changer transitions 119/119 dead transitions. [2022-07-12 10:09:59,356 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 119 transitions, 706 flow [2022-07-12 10:09:59,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-12 10:09:59,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-07-12 10:09:59,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 573 transitions. [2022-07-12 10:09:59,358 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7958333333333333 [2022-07-12 10:09:59,358 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 573 transitions. [2022-07-12 10:09:59,358 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 573 transitions. [2022-07-12 10:09:59,359 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:09:59,359 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 573 transitions. [2022-07-12 10:09:59,361 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 71.625) internal successors, (573), 8 states have internal predecessors, (573), 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) [2022-07-12 10:09:59,362 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 90.0) internal successors, (810), 9 states have internal predecessors, (810), 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) [2022-07-12 10:09:59,363 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 90.0) internal successors, (810), 9 states have internal predecessors, (810), 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) [2022-07-12 10:09:59,363 INFO L186 Difference]: Start difference. First operand has 140 places, 114 transitions, 603 flow. Second operand 8 states and 573 transitions. [2022-07-12 10:09:59,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 119 transitions, 706 flow [2022-07-12 10:09:59,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 119 transitions, 625 flow, removed 16 selfloop flow, removed 14 redundant places. [2022-07-12 10:09:59,373 INFO L242 Difference]: Finished difference. Result has 128 places, 0 transitions, 0 flow [2022-07-12 10:09:59,374 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=530, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=128, PETRI_TRANSITIONS=0} [2022-07-12 10:09:59,374 INFO L279 CegarLoopForPetriNet]: 82 programPoint places, 46 predicate places. [2022-07-12 10:09:59,375 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 0 transitions, 0 flow [2022-07-12 10:09:59,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 70.57142857142857) internal successors, (494), 7 states have internal predecessors, (494), 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) [2022-07-12 10:09:59,378 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-07-12 10:09:59,379 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2022-07-12 10:09:59,379 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-07-12 10:09:59,379 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2022-07-12 10:09:59,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-12 10:09:59,379 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:09:59,389 INFO L226 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-07-12 10:09:59,389 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-12 10:09:59,399 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.07 10:09:59 BasicIcfg [2022-07-12 10:09:59,399 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-12 10:09:59,400 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-12 10:09:59,400 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-12 10:09:59,400 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-12 10:09:59,400 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:09:55" (3/4) ... [2022-07-12 10:09:59,402 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-12 10:09:59,407 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2022-07-12 10:09:59,407 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2022-07-12 10:09:59,408 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2022-07-12 10:09:59,412 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2022-07-12 10:09:59,413 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-07-12 10:09:59,413 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-12 10:09:59,413 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-12 10:09:59,443 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-12 10:09:59,443 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-12 10:09:59,443 INFO L158 Benchmark]: Toolchain (without parser) took 5076.62ms. Allocated memory was 98.6MB in the beginning and 174.1MB in the end (delta: 75.5MB). Free memory was 65.7MB in the beginning and 78.9MB in the end (delta: -13.2MB). Peak memory consumption was 60.5MB. Max. memory is 16.1GB. [2022-07-12 10:09:59,444 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 98.6MB. Free memory is still 53.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 10:09:59,444 INFO L158 Benchmark]: CACSL2BoogieTranslator took 487.42ms. Allocated memory was 98.6MB in the beginning and 119.5MB in the end (delta: 21.0MB). Free memory was 65.4MB in the beginning and 83.8MB in the end (delta: -18.4MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-07-12 10:09:59,444 INFO L158 Benchmark]: Boogie Procedure Inliner took 62.12ms. Allocated memory is still 119.5MB. Free memory was 83.8MB in the beginning and 81.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-12 10:09:59,444 INFO L158 Benchmark]: Boogie Preprocessor took 51.70ms. Allocated memory is still 119.5MB. Free memory was 81.7MB in the beginning and 80.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-12 10:09:59,445 INFO L158 Benchmark]: RCFGBuilder took 334.37ms. Allocated memory is still 119.5MB. Free memory was 80.2MB in the beginning and 68.1MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-07-12 10:09:59,445 INFO L158 Benchmark]: TraceAbstraction took 4086.26ms. Allocated memory was 119.5MB in the beginning and 174.1MB in the end (delta: 54.5MB). Free memory was 67.6MB in the beginning and 82.1MB in the end (delta: -14.5MB). Peak memory consumption was 42.2MB. Max. memory is 16.1GB. [2022-07-12 10:09:59,445 INFO L158 Benchmark]: Witness Printer took 43.31ms. Allocated memory is still 174.1MB. Free memory was 82.1MB in the beginning and 78.9MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-12 10:09:59,447 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 98.6MB. Free memory is still 53.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 487.42ms. Allocated memory was 98.6MB in the beginning and 119.5MB in the end (delta: 21.0MB). Free memory was 65.4MB in the beginning and 83.8MB in the end (delta: -18.4MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 62.12ms. Allocated memory is still 119.5MB. Free memory was 83.8MB in the beginning and 81.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 51.70ms. Allocated memory is still 119.5MB. Free memory was 81.7MB in the beginning and 80.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 334.37ms. Allocated memory is still 119.5MB. Free memory was 80.2MB in the beginning and 68.1MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 4086.26ms. Allocated memory was 119.5MB in the beginning and 174.1MB in the end (delta: 54.5MB). Free memory was 67.6MB in the beginning and 82.1MB in the end (delta: -14.5MB). Peak memory consumption was 42.2MB. Max. memory is 16.1GB. * Witness Printer took 43.31ms. Allocated memory is still 174.1MB. Free memory was 82.1MB in the beginning and 78.9MB 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: - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 112 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 4.0s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 397 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 397 mSDsluCounter, 444 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 444 mSDsCounter, 99 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 543 IncrementalHoareTripleChecker+Invalid, 642 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 99 mSolverCounterUnsat, 109 mSDtfsCounter, 543 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 123 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=624occurred in iteration=7, InterpolantAutomatonStates: 102, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 531 NumberOfCodeBlocks, 531 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 522 ConstructedInterpolants, 0 QuantifiedInterpolants, 2078 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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! [2022-07-12 10:09:59,482 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE