./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe005_tso.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 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/safe005_tso.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0f4fff0b2b9fbf3a1c21190a7a3a2488ff184faa22678fe9af5f2740e4422fce --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 21:25:48,763 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 21:25:48,766 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 21:25:48,811 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 21:25:48,811 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 21:25:48,813 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 21:25:48,815 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 21:25:48,817 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 21:25:48,819 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 21:25:48,823 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 21:25:48,824 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 21:25:48,826 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 21:25:48,826 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 21:25:48,828 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 21:25:48,829 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 21:25:48,832 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 21:25:48,833 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 21:25:48,835 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 21:25:48,837 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 21:25:48,842 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 21:25:48,845 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 21:25:48,846 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 21:25:48,847 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 21:25:48,848 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 21:25:48,849 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 21:25:48,856 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 21:25:48,857 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 21:25:48,857 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 21:25:48,858 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 21:25:48,859 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 21:25:48,860 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 21:25:48,860 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 21:25:48,862 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 21:25:48,862 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 21:25:48,863 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 21:25:48,864 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 21:25:48,864 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 21:25:48,865 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 21:25:48,866 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 21:25:48,866 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 21:25:48,867 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 21:25:48,869 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 21:25:48,871 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 21:25:48,899 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 21:25:48,899 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 21:25:48,900 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 21:25:48,900 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 21:25:48,901 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 21:25:48,901 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 21:25:48,901 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 21:25:48,902 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 21:25:48,902 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 21:25:48,903 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 21:25:48,903 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 21:25:48,903 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 21:25:48,903 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 21:25:48,903 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 21:25:48,904 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 21:25:48,904 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 21:25:48,904 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 21:25:48,904 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 21:25:48,904 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 21:25:48,905 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 21:25:48,905 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 21:25:48,905 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 21:25:48,905 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 21:25:48,905 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 21:25:48,906 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 21:25:48,906 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 21:25:48,906 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 21:25:48,906 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 21:25:48,907 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 21:25:48,907 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 21:25:48,907 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 21:25:48,907 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 21:25:48,907 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 21:25:48,908 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0f4fff0b2b9fbf3a1c21190a7a3a2488ff184faa22678fe9af5f2740e4422fce [2022-07-22 21:25:49,149 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 21:25:49,182 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 21:25:49,185 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 21:25:49,186 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 21:25:49,187 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 21:25:49,188 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe005_tso.i [2022-07-22 21:25:49,258 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4ecec882/c0d2fef5d1a54dc48a6a31be5cb23d66/FLAG01b9e2afe [2022-07-22 21:25:49,694 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 21:25:49,698 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe005_tso.i [2022-07-22 21:25:49,722 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4ecec882/c0d2fef5d1a54dc48a6a31be5cb23d66/FLAG01b9e2afe [2022-07-22 21:25:50,036 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4ecec882/c0d2fef5d1a54dc48a6a31be5cb23d66 [2022-07-22 21:25:50,038 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 21:25:50,040 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 21:25:50,044 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 21:25:50,045 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 21:25:50,048 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 21:25:50,048 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 09:25:50" (1/1) ... [2022-07-22 21:25:50,049 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52568dc2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:25:50, skipping insertion in model container [2022-07-22 21:25:50,050 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 09:25:50" (1/1) ... [2022-07-22 21:25:50,056 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 21:25:50,106 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 21:25:50,267 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/safe005_tso.i[945,958] [2022-07-22 21:25:50,429 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 21:25:50,438 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 21:25:50,447 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/safe005_tso.i[945,958] [2022-07-22 21:25:50,477 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 21:25:50,510 INFO L208 MainTranslator]: Completed translation [2022-07-22 21:25:50,510 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:25:50 WrapperNode [2022-07-22 21:25:50,511 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 21:25:50,512 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 21:25:50,512 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 21:25:50,512 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 21:25:50,520 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:25:50" (1/1) ... [2022-07-22 21:25:50,539 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:25:50" (1/1) ... [2022-07-22 21:25:50,576 INFO L137 Inliner]: procedures = 176, calls = 55, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 71 [2022-07-22 21:25:50,577 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 21:25:50,578 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 21:25:50,578 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 21:25:50,578 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 21:25:50,585 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:25:50" (1/1) ... [2022-07-22 21:25:50,586 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:25:50" (1/1) ... [2022-07-22 21:25:50,602 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:25:50" (1/1) ... [2022-07-22 21:25:50,611 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:25:50" (1/1) ... [2022-07-22 21:25:50,616 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:25:50" (1/1) ... [2022-07-22 21:25:50,618 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:25:50" (1/1) ... [2022-07-22 21:25:50,630 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:25:50" (1/1) ... [2022-07-22 21:25:50,633 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 21:25:50,634 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 21:25:50,634 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 21:25:50,634 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 21:25:50,635 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:25:50" (1/1) ... [2022-07-22 21:25:50,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 21:25:50,664 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 21:25:50,681 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) [2022-07-22 21:25:50,691 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 [2022-07-22 21:25:50,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-22 21:25:50,721 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-07-22 21:25:50,722 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 21:25:50,722 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-22 21:25:50,722 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-22 21:25:50,722 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-07-22 21:25:50,725 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-07-22 21:25:50,726 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-07-22 21:25:50,726 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-07-22 21:25:50,726 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-07-22 21:25:50,726 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-07-22 21:25:50,727 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 21:25:50,727 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-07-22 21:25:50,727 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 21:25:50,727 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 21:25:50,729 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-22 21:25:50,879 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 21:25:50,880 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 21:25:51,053 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 21:25:51,059 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 21:25:51,060 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-22 21:25:51,061 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 09:25:51 BoogieIcfgContainer [2022-07-22 21:25:51,061 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 21:25:51,063 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 21:25:51,063 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 21:25:51,068 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 21:25:51,068 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 09:25:50" (1/3) ... [2022-07-22 21:25:51,069 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16d9752c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 09:25:51, skipping insertion in model container [2022-07-22 21:25:51,069 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:25:50" (2/3) ... [2022-07-22 21:25:51,069 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16d9752c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 09:25:51, skipping insertion in model container [2022-07-22 21:25:51,069 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 09:25:51" (3/3) ... [2022-07-22 21:25:51,070 INFO L111 eAbstractionObserver]: Analyzing ICFG safe005_tso.i [2022-07-22 21:25:51,076 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-22 21:25:51,084 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 21:25:51,085 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 21:25:51,085 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-22 21:25:51,132 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-22 21:25:51,161 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 100 places, 92 transitions, 199 flow [2022-07-22 21:25:51,198 INFO L129 PetriNetUnfolder]: 2/89 cut-off events. [2022-07-22 21:25:51,198 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-22 21:25:51,202 INFO L84 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 89 events. 2/89 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/86 useless extension candidates. Maximal degree in co-relation 68. Up to 2 conditions per place. [2022-07-22 21:25:51,202 INFO L82 GeneralOperation]: Start removeDead. Operand has 100 places, 92 transitions, 199 flow [2022-07-22 21:25:51,206 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 84 places, 75 transitions, 159 flow [2022-07-22 21:25:51,216 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 21:25:51,222 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@9ade670, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6f1434c0 [2022-07-22 21:25:51,223 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-07-22 21:25:51,243 INFO L129 PetriNetUnfolder]: 1/74 cut-off events. [2022-07-22 21:25:51,244 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-22 21:25:51,254 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:25:51,255 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] [2022-07-22 21:25:51,256 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)] === [2022-07-22 21:25:51,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:25:51,261 INFO L85 PathProgramCache]: Analyzing trace with hash -1011825075, now seen corresponding path program 1 times [2022-07-22 21:25:51,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:25:51,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913308116] [2022-07-22 21:25:51,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:25:51,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:25:51,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:25:51,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:25:51,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:25:51,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913308116] [2022-07-22 21:25:51,789 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913308116] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:25:51,789 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:25:51,789 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 21:25:51,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219226346] [2022-07-22 21:25:51,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:25:51,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 21:25:51,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:25:51,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 21:25:51,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-22 21:25:51,833 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 92 [2022-07-22 21:25:51,838 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 75 transitions, 159 flow. Second operand has 7 states, 7 states have (on average 71.85714285714286) internal successors, (503), 7 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:25:51,838 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:25:51,838 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 92 [2022-07-22 21:25:51,839 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:25:52,315 INFO L129 PetriNetUnfolder]: 290/709 cut-off events. [2022-07-22 21:25:52,316 INFO L130 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2022-07-22 21:25:52,322 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1238 conditions, 709 events. 290/709 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 3814 event pairs, 11 based on Foata normal form. 31/708 useless extension candidates. Maximal degree in co-relation 1200. Up to 110 conditions per place. [2022-07-22 21:25:52,327 INFO L132 encePairwiseOnDemand]: 81/92 looper letters, 21 selfloop transitions, 6 changer transitions 45/128 dead transitions. [2022-07-22 21:25:52,327 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 128 transitions, 409 flow [2022-07-22 21:25:52,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-22 21:25:52,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-22 21:25:52,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 988 transitions. [2022-07-22 21:25:52,350 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8260869565217391 [2022-07-22 21:25:52,351 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 988 transitions. [2022-07-22 21:25:52,352 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 988 transitions. [2022-07-22 21:25:52,356 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:25:52,359 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 988 transitions. [2022-07-22 21:25:52,366 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 76.0) internal successors, (988), 13 states have internal predecessors, (988), 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) [2022-07-22 21:25:52,375 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 92.0) internal successors, (1288), 14 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:25:52,376 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 92.0) internal successors, (1288), 14 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:25:52,378 INFO L186 Difference]: Start difference. First operand has 84 places, 75 transitions, 159 flow. Second operand 13 states and 988 transitions. [2022-07-22 21:25:52,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 128 transitions, 409 flow [2022-07-22 21:25:52,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 128 transitions, 406 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-07-22 21:25:52,389 INFO L242 Difference]: Finished difference. Result has 105 places, 78 transitions, 240 flow [2022-07-22 21:25:52,391 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=240, PETRI_PLACES=105, PETRI_TRANSITIONS=78} [2022-07-22 21:25:52,394 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, 21 predicate places. [2022-07-22 21:25:52,394 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 78 transitions, 240 flow [2022-07-22 21:25:52,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 71.85714285714286) internal successors, (503), 7 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:25:52,395 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:25:52,395 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] [2022-07-22 21:25:52,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 21:25:52,396 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)] === [2022-07-22 21:25:52,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:25:52,399 INFO L85 PathProgramCache]: Analyzing trace with hash -1138626235, now seen corresponding path program 1 times [2022-07-22 21:25:52,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:25:52,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835756479] [2022-07-22 21:25:52,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:25:52,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:25:52,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:25:52,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:25:52,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:25:52,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835756479] [2022-07-22 21:25:52,599 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835756479] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:25:52,600 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:25:52,601 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 21:25:52,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042788777] [2022-07-22 21:25:52,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:25:52,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 21:25:52,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:25:52,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 21:25:52,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-07-22 21:25:52,608 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 92 [2022-07-22 21:25:52,609 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 78 transitions, 240 flow. Second operand has 8 states, 8 states have (on average 71.875) internal successors, (575), 8 states have internal predecessors, (575), 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) [2022-07-22 21:25:52,610 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:25:52,615 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 92 [2022-07-22 21:25:52,616 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:25:52,824 INFO L129 PetriNetUnfolder]: 148/544 cut-off events. [2022-07-22 21:25:52,824 INFO L130 PetriNetUnfolder]: For 1165/1935 co-relation queries the response was YES. [2022-07-22 21:25:52,828 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1666 conditions, 544 events. 148/544 cut-off events. For 1165/1935 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 3122 event pairs, 2 based on Foata normal form. 16/538 useless extension candidates. Maximal degree in co-relation 1617. Up to 120 conditions per place. [2022-07-22 21:25:52,830 INFO L132 encePairwiseOnDemand]: 81/92 looper letters, 22 selfloop transitions, 9 changer transitions 31/118 dead transitions. [2022-07-22 21:25:52,831 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 118 transitions, 662 flow [2022-07-22 21:25:52,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 21:25:52,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-07-22 21:25:52,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 609 transitions. [2022-07-22 21:25:52,833 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8274456521739131 [2022-07-22 21:25:52,833 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 609 transitions. [2022-07-22 21:25:52,834 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 609 transitions. [2022-07-22 21:25:52,834 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:25:52,834 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 609 transitions. [2022-07-22 21:25:52,836 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 76.125) internal successors, (609), 8 states have internal predecessors, (609), 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) [2022-07-22 21:25:52,838 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 92.0) internal successors, (828), 9 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:25:52,839 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 92.0) internal successors, (828), 9 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:25:52,839 INFO L186 Difference]: Start difference. First operand has 105 places, 78 transitions, 240 flow. Second operand 8 states and 609 transitions. [2022-07-22 21:25:52,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 118 transitions, 662 flow [2022-07-22 21:25:52,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 118 transitions, 631 flow, removed 14 selfloop flow, removed 4 redundant places. [2022-07-22 21:25:52,851 INFO L242 Difference]: Finished difference. Result has 104 places, 80 transitions, 278 flow [2022-07-22 21:25:52,852 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=278, PETRI_PLACES=104, PETRI_TRANSITIONS=80} [2022-07-22 21:25:52,853 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, 20 predicate places. [2022-07-22 21:25:52,853 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 80 transitions, 278 flow [2022-07-22 21:25:52,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 71.875) internal successors, (575), 8 states have internal predecessors, (575), 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) [2022-07-22 21:25:52,854 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:25:52,854 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] [2022-07-22 21:25:52,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 21:25:52,855 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)] === [2022-07-22 21:25:52,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:25:52,856 INFO L85 PathProgramCache]: Analyzing trace with hash 1467782811, now seen corresponding path program 1 times [2022-07-22 21:25:52,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:25:52,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691182477] [2022-07-22 21:25:52,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:25:52,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:25:52,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:25:53,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:25:53,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:25:53,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691182477] [2022-07-22 21:25:53,008 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691182477] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:25:53,008 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:25:53,008 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 21:25:53,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081464252] [2022-07-22 21:25:53,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:25:53,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 21:25:53,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:25:53,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 21:25:53,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-22 21:25:53,011 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 92 [2022-07-22 21:25:53,012 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 80 transitions, 278 flow. Second operand has 7 states, 7 states have (on average 72.28571428571429) internal successors, (506), 7 states have internal predecessors, (506), 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) [2022-07-22 21:25:53,012 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:25:53,012 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 92 [2022-07-22 21:25:53,012 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:25:53,209 INFO L129 PetriNetUnfolder]: 58/293 cut-off events. [2022-07-22 21:25:53,209 INFO L130 PetriNetUnfolder]: For 730/1054 co-relation queries the response was YES. [2022-07-22 21:25:53,210 INFO L84 FinitePrefix]: Finished finitePrefix Result has 895 conditions, 293 events. 58/293 cut-off events. For 730/1054 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1282 event pairs, 11 based on Foata normal form. 9/290 useless extension candidates. Maximal degree in co-relation 841. Up to 50 conditions per place. [2022-07-22 21:25:53,212 INFO L132 encePairwiseOnDemand]: 82/92 looper letters, 23 selfloop transitions, 7 changer transitions 31/117 dead transitions. [2022-07-22 21:25:53,212 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 117 transitions, 702 flow [2022-07-22 21:25:53,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-22 21:25:53,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-22 21:25:53,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 965 transitions. [2022-07-22 21:25:53,215 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8068561872909699 [2022-07-22 21:25:53,216 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 965 transitions. [2022-07-22 21:25:53,217 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 965 transitions. [2022-07-22 21:25:53,217 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:25:53,218 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 965 transitions. [2022-07-22 21:25:53,220 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 74.23076923076923) internal successors, (965), 13 states have internal predecessors, (965), 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) [2022-07-22 21:25:53,222 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 92.0) internal successors, (1288), 14 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:25:53,223 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 92.0) internal successors, (1288), 14 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:25:53,223 INFO L186 Difference]: Start difference. First operand has 104 places, 80 transitions, 278 flow. Second operand 13 states and 965 transitions. [2022-07-22 21:25:53,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 117 transitions, 702 flow [2022-07-22 21:25:53,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 117 transitions, 625 flow, removed 19 selfloop flow, removed 6 redundant places. [2022-07-22 21:25:53,230 INFO L242 Difference]: Finished difference. Result has 118 places, 81 transitions, 297 flow [2022-07-22 21:25:53,230 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=245, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=297, PETRI_PLACES=118, PETRI_TRANSITIONS=81} [2022-07-22 21:25:53,232 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, 34 predicate places. [2022-07-22 21:25:53,232 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 81 transitions, 297 flow [2022-07-22 21:25:53,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 72.28571428571429) internal successors, (506), 7 states have internal predecessors, (506), 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) [2022-07-22 21:25:53,232 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:25:53,233 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] [2022-07-22 21:25:53,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 21:25:53,233 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)] === [2022-07-22 21:25:53,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:25:53,234 INFO L85 PathProgramCache]: Analyzing trace with hash 262329859, now seen corresponding path program 1 times [2022-07-22 21:25:53,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:25:53,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314404120] [2022-07-22 21:25:53,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:25:53,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:25:53,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:25:53,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:25:53,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:25:53,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314404120] [2022-07-22 21:25:53,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314404120] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:25:53,383 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:25:53,383 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 21:25:53,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745403483] [2022-07-22 21:25:53,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:25:53,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 21:25:53,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:25:53,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 21:25:53,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-22 21:25:53,386 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 92 [2022-07-22 21:25:53,386 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 81 transitions, 297 flow. Second operand has 8 states, 8 states have (on average 72.125) internal successors, (577), 8 states have internal predecessors, (577), 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) [2022-07-22 21:25:53,387 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:25:53,387 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 92 [2022-07-22 21:25:53,387 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:25:53,596 INFO L129 PetriNetUnfolder]: 23/266 cut-off events. [2022-07-22 21:25:53,597 INFO L130 PetriNetUnfolder]: For 688/1373 co-relation queries the response was YES. [2022-07-22 21:25:53,599 INFO L84 FinitePrefix]: Finished finitePrefix Result has 763 conditions, 266 events. 23/266 cut-off events. For 688/1373 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1371 event pairs, 8 based on Foata normal form. 8/263 useless extension candidates. Maximal degree in co-relation 709. Up to 36 conditions per place. [2022-07-22 21:25:53,600 INFO L132 encePairwiseOnDemand]: 82/92 looper letters, 23 selfloop transitions, 8 changer transitions 22/109 dead transitions. [2022-07-22 21:25:53,600 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 109 transitions, 645 flow [2022-07-22 21:25:53,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-22 21:25:53,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-22 21:25:53,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 960 transitions. [2022-07-22 21:25:53,603 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.802675585284281 [2022-07-22 21:25:53,603 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 960 transitions. [2022-07-22 21:25:53,604 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 960 transitions. [2022-07-22 21:25:53,604 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:25:53,604 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 960 transitions. [2022-07-22 21:25:53,607 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 73.84615384615384) internal successors, (960), 13 states have internal predecessors, (960), 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) [2022-07-22 21:25:53,609 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 92.0) internal successors, (1288), 14 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:25:53,609 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 92.0) internal successors, (1288), 14 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:25:53,610 INFO L186 Difference]: Start difference. First operand has 118 places, 81 transitions, 297 flow. Second operand 13 states and 960 transitions. [2022-07-22 21:25:53,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 109 transitions, 645 flow [2022-07-22 21:25:53,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 109 transitions, 550 flow, removed 45 selfloop flow, removed 11 redundant places. [2022-07-22 21:25:53,615 INFO L242 Difference]: Finished difference. Result has 121 places, 80 transitions, 312 flow [2022-07-22 21:25:53,615 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=312, PETRI_PLACES=121, PETRI_TRANSITIONS=80} [2022-07-22 21:25:53,616 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, 37 predicate places. [2022-07-22 21:25:53,616 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 80 transitions, 312 flow [2022-07-22 21:25:53,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 72.125) internal successors, (577), 8 states have internal predecessors, (577), 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) [2022-07-22 21:25:53,617 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:25:53,617 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] [2022-07-22 21:25:53,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 21:25:53,617 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)] === [2022-07-22 21:25:53,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:25:53,618 INFO L85 PathProgramCache]: Analyzing trace with hash 251901706, now seen corresponding path program 1 times [2022-07-22 21:25:53,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:25:53,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632860740] [2022-07-22 21:25:53,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:25:53,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:25:53,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:25:53,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:25:53,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:25:53,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632860740] [2022-07-22 21:25:53,727 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632860740] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:25:53,727 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:25:53,727 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 21:25:53,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44622653] [2022-07-22 21:25:53,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:25:53,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 21:25:53,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:25:53,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 21:25:53,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 21:25:53,729 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 92 [2022-07-22 21:25:53,729 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 80 transitions, 312 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) [2022-07-22 21:25:53,729 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:25:53,729 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 92 [2022-07-22 21:25:53,730 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:25:53,951 INFO L129 PetriNetUnfolder]: 500/1268 cut-off events. [2022-07-22 21:25:53,951 INFO L130 PetriNetUnfolder]: For 701/726 co-relation queries the response was YES. [2022-07-22 21:25:53,958 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2646 conditions, 1268 events. 500/1268 cut-off events. For 701/726 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 9531 event pairs, 21 based on Foata normal form. 5/1162 useless extension candidates. Maximal degree in co-relation 2584. Up to 345 conditions per place. [2022-07-22 21:25:53,962 INFO L132 encePairwiseOnDemand]: 82/92 looper letters, 25 selfloop transitions, 15 changer transitions 6/112 dead transitions. [2022-07-22 21:25:53,963 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 112 transitions, 472 flow [2022-07-22 21:25:53,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 21:25:53,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-22 21:25:53,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 798 transitions. [2022-07-22 21:25:53,965 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8673913043478261 [2022-07-22 21:25:53,965 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 798 transitions. [2022-07-22 21:25:53,965 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 798 transitions. [2022-07-22 21:25:53,966 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:25:53,966 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 798 transitions. [2022-07-22 21:25:53,968 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 79.8) internal successors, (798), 10 states have internal predecessors, (798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:25:53,969 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 92.0) internal successors, (1012), 11 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:25:53,970 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 92.0) internal successors, (1012), 11 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:25:53,970 INFO L186 Difference]: Start difference. First operand has 121 places, 80 transitions, 312 flow. Second operand 10 states and 798 transitions. [2022-07-22 21:25:53,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 112 transitions, 472 flow [2022-07-22 21:25:53,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 112 transitions, 431 flow, removed 15 selfloop flow, removed 14 redundant places. [2022-07-22 21:25:53,976 INFO L242 Difference]: Finished difference. Result has 114 places, 93 transitions, 380 flow [2022-07-22 21:25:53,976 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=271, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=380, PETRI_PLACES=114, PETRI_TRANSITIONS=93} [2022-07-22 21:25:53,977 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, 30 predicate places. [2022-07-22 21:25:53,977 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 93 transitions, 380 flow [2022-07-22 21:25:53,977 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) [2022-07-22 21:25:53,977 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:25:53,978 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] [2022-07-22 21:25:53,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 21:25:53,978 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)] === [2022-07-22 21:25:53,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:25:53,978 INFO L85 PathProgramCache]: Analyzing trace with hash 1451553419, now seen corresponding path program 1 times [2022-07-22 21:25:53,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:25:53,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458307638] [2022-07-22 21:25:53,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:25:53,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:25:53,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:25:54,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:25:54,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:25:54,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458307638] [2022-07-22 21:25:54,055 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458307638] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:25:54,055 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:25:54,055 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 21:25:54,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047808345] [2022-07-22 21:25:54,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:25:54,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 21:25:54,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:25:54,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 21:25:54,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-22 21:25:54,057 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 92 [2022-07-22 21:25:54,058 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 93 transitions, 380 flow. Second operand has 7 states, 7 states have (on average 76.57142857142857) internal successors, (536), 7 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:25:54,058 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:25:54,058 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 92 [2022-07-22 21:25:54,058 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:25:54,338 INFO L129 PetriNetUnfolder]: 487/1334 cut-off events. [2022-07-22 21:25:54,338 INFO L130 PetriNetUnfolder]: For 3014/3285 co-relation queries the response was YES. [2022-07-22 21:25:54,345 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4513 conditions, 1334 events. 487/1334 cut-off events. For 3014/3285 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 10660 event pairs, 4 based on Foata normal form. 101/1369 useless extension candidates. Maximal degree in co-relation 4456. Up to 529 conditions per place. [2022-07-22 21:25:54,350 INFO L132 encePairwiseOnDemand]: 82/92 looper letters, 24 selfloop transitions, 28 changer transitions 13/131 dead transitions. [2022-07-22 21:25:54,350 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 131 transitions, 746 flow [2022-07-22 21:25:54,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-22 21:25:54,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-22 21:25:54,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1036 transitions. [2022-07-22 21:25:54,354 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8662207357859532 [2022-07-22 21:25:54,354 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1036 transitions. [2022-07-22 21:25:54,354 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1036 transitions. [2022-07-22 21:25:54,355 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:25:54,355 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1036 transitions. [2022-07-22 21:25:54,358 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 79.6923076923077) internal successors, (1036), 13 states have internal predecessors, (1036), 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) [2022-07-22 21:25:54,360 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 92.0) internal successors, (1288), 14 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:25:54,361 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 92.0) internal successors, (1288), 14 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:25:54,361 INFO L186 Difference]: Start difference. First operand has 114 places, 93 transitions, 380 flow. Second operand 13 states and 1036 transitions. [2022-07-22 21:25:54,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 131 transitions, 746 flow [2022-07-22 21:25:54,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 131 transitions, 744 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-22 21:25:54,370 INFO L242 Difference]: Finished difference. Result has 131 places, 110 transitions, 604 flow [2022-07-22 21:25:54,371 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=378, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=604, PETRI_PLACES=131, PETRI_TRANSITIONS=110} [2022-07-22 21:25:54,373 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, 47 predicate places. [2022-07-22 21:25:54,373 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 110 transitions, 604 flow [2022-07-22 21:25:54,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 76.57142857142857) internal successors, (536), 7 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:25:54,374 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:25:54,374 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] [2022-07-22 21:25:54,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 21:25:54,375 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)] === [2022-07-22 21:25:54,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:25:54,375 INFO L85 PathProgramCache]: Analyzing trace with hash 748857068, now seen corresponding path program 1 times [2022-07-22 21:25:54,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:25:54,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506636526] [2022-07-22 21:25:54,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:25:54,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:25:54,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:25:54,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:25:54,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:25:54,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506636526] [2022-07-22 21:25:54,473 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506636526] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:25:54,473 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:25:54,473 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 21:25:54,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52298876] [2022-07-22 21:25:54,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:25:54,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 21:25:54,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:25:54,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 21:25:54,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-22 21:25:54,479 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 92 [2022-07-22 21:25:54,480 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 110 transitions, 604 flow. Second operand has 8 states, 8 states have (on average 76.5) internal successors, (612), 8 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:25:54,480 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:25:54,480 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 92 [2022-07-22 21:25:54,480 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:25:54,801 INFO L129 PetriNetUnfolder]: 327/1067 cut-off events. [2022-07-22 21:25:54,801 INFO L130 PetriNetUnfolder]: For 5199/6106 co-relation queries the response was YES. [2022-07-22 21:25:54,808 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4639 conditions, 1067 events. 327/1067 cut-off events. For 5199/6106 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 9012 event pairs, 0 based on Foata normal form. 129/1130 useless extension candidates. Maximal degree in co-relation 4574. Up to 375 conditions per place. [2022-07-22 21:25:54,811 INFO L132 encePairwiseOnDemand]: 82/92 looper letters, 20 selfloop transitions, 32 changer transitions 21/139 dead transitions. [2022-07-22 21:25:54,812 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 139 transitions, 944 flow [2022-07-22 21:25:54,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-22 21:25:54,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-22 21:25:54,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1258 transitions. [2022-07-22 21:25:54,815 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8546195652173914 [2022-07-22 21:25:54,815 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1258 transitions. [2022-07-22 21:25:54,816 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1258 transitions. [2022-07-22 21:25:54,817 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:25:54,817 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1258 transitions. [2022-07-22 21:25:54,820 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 78.625) internal successors, (1258), 16 states have internal predecessors, (1258), 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) [2022-07-22 21:25:54,823 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 92.0) internal successors, (1564), 17 states have internal predecessors, (1564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:25:54,824 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 92.0) internal successors, (1564), 17 states have internal predecessors, (1564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:25:54,824 INFO L186 Difference]: Start difference. First operand has 131 places, 110 transitions, 604 flow. Second operand 16 states and 1258 transitions. [2022-07-22 21:25:54,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 139 transitions, 944 flow [2022-07-22 21:25:54,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 139 transitions, 855 flow, removed 35 selfloop flow, removed 9 redundant places. [2022-07-22 21:25:54,848 INFO L242 Difference]: Finished difference. Result has 144 places, 111 transitions, 629 flow [2022-07-22 21:25:54,849 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=523, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=629, PETRI_PLACES=144, PETRI_TRANSITIONS=111} [2022-07-22 21:25:54,849 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, 60 predicate places. [2022-07-22 21:25:54,850 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 111 transitions, 629 flow [2022-07-22 21:25:54,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 76.5) internal successors, (612), 8 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:25:54,851 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:25:54,851 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, 1, 1] [2022-07-22 21:25:54,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 21:25:54,851 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)] === [2022-07-22 21:25:54,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:25:54,852 INFO L85 PathProgramCache]: Analyzing trace with hash 453170603, now seen corresponding path program 1 times [2022-07-22 21:25:54,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:25:54,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163191950] [2022-07-22 21:25:54,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:25:54,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:25:54,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:25:54,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:25:54,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:25:54,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163191950] [2022-07-22 21:25:54,993 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163191950] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:25:54,993 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:25:54,993 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 21:25:54,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730416224] [2022-07-22 21:25:54,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:25:54,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 21:25:54,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:25:54,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 21:25:54,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-22 21:25:54,995 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 92 [2022-07-22 21:25:54,996 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 111 transitions, 629 flow. Second operand has 7 states, 7 states have (on average 72.57142857142857) internal successors, (508), 7 states have internal predecessors, (508), 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) [2022-07-22 21:25:54,996 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:25:54,997 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 92 [2022-07-22 21:25:54,997 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:25:55,149 INFO L129 PetriNetUnfolder]: 160/838 cut-off events. [2022-07-22 21:25:55,149 INFO L130 PetriNetUnfolder]: For 2577/2661 co-relation queries the response was YES. [2022-07-22 21:25:55,154 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2800 conditions, 838 events. 160/838 cut-off events. For 2577/2661 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 7303 event pairs, 0 based on Foata normal form. 3/799 useless extension candidates. Maximal degree in co-relation 2729. Up to 121 conditions per place. [2022-07-22 21:25:55,156 INFO L132 encePairwiseOnDemand]: 83/92 looper letters, 16 selfloop transitions, 6 changer transitions 9/118 dead transitions. [2022-07-22 21:25:55,156 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 118 transitions, 713 flow [2022-07-22 21:25:55,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 21:25:55,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-22 21:25:55,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 521 transitions. [2022-07-22 21:25:55,158 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8090062111801242 [2022-07-22 21:25:55,158 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 521 transitions. [2022-07-22 21:25:55,159 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 521 transitions. [2022-07-22 21:25:55,159 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:25:55,159 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 521 transitions. [2022-07-22 21:25:55,160 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 74.42857142857143) internal successors, (521), 7 states have internal predecessors, (521), 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) [2022-07-22 21:25:55,162 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 92.0) internal successors, (736), 8 states have internal predecessors, (736), 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) [2022-07-22 21:25:55,163 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 92.0) internal successors, (736), 8 states have internal predecessors, (736), 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) [2022-07-22 21:25:55,163 INFO L186 Difference]: Start difference. First operand has 144 places, 111 transitions, 629 flow. Second operand 7 states and 521 transitions. [2022-07-22 21:25:55,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 118 transitions, 713 flow [2022-07-22 21:25:55,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 118 transitions, 616 flow, removed 15 selfloop flow, removed 15 redundant places. [2022-07-22 21:25:55,182 INFO L242 Difference]: Finished difference. Result has 136 places, 108 transitions, 531 flow [2022-07-22 21:25:55,183 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=532, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=531, PETRI_PLACES=136, PETRI_TRANSITIONS=108} [2022-07-22 21:25:55,185 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, 52 predicate places. [2022-07-22 21:25:55,186 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 108 transitions, 531 flow [2022-07-22 21:25:55,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 72.57142857142857) internal successors, (508), 7 states have internal predecessors, (508), 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) [2022-07-22 21:25:55,186 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:25:55,187 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, 1, 1] [2022-07-22 21:25:55,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-22 21:25:55,187 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)] === [2022-07-22 21:25:55,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:25:55,188 INFO L85 PathProgramCache]: Analyzing trace with hash -114987435, now seen corresponding path program 2 times [2022-07-22 21:25:55,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:25:55,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845759078] [2022-07-22 21:25:55,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:25:55,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:25:55,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:25:55,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:25:55,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:25:55,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845759078] [2022-07-22 21:25:55,287 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845759078] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:25:55,287 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:25:55,287 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 21:25:55,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208701522] [2022-07-22 21:25:55,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:25:55,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 21:25:55,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:25:55,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 21:25:55,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 21:25:55,290 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 92 [2022-07-22 21:25:55,291 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 108 transitions, 531 flow. Second operand has 7 states, 7 states have (on average 76.85714285714286) internal successors, (538), 7 states have internal predecessors, (538), 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) [2022-07-22 21:25:55,291 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:25:55,291 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 92 [2022-07-22 21:25:55,291 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:25:55,396 INFO L129 PetriNetUnfolder]: 83/451 cut-off events. [2022-07-22 21:25:55,396 INFO L130 PetriNetUnfolder]: For 656/665 co-relation queries the response was YES. [2022-07-22 21:25:55,398 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1239 conditions, 451 events. 83/451 cut-off events. For 656/665 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3168 event pairs, 0 based on Foata normal form. 1/430 useless extension candidates. Maximal degree in co-relation 1216. Up to 54 conditions per place. [2022-07-22 21:25:55,399 INFO L132 encePairwiseOnDemand]: 86/92 looper letters, 0 selfloop transitions, 0 changer transitions 107/107 dead transitions. [2022-07-22 21:25:55,399 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 107 transitions, 557 flow [2022-07-22 21:25:55,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 21:25:55,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-22 21:25:55,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 539 transitions. [2022-07-22 21:25:55,401 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8369565217391305 [2022-07-22 21:25:55,401 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 539 transitions. [2022-07-22 21:25:55,401 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 539 transitions. [2022-07-22 21:25:55,402 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:25:55,402 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 539 transitions. [2022-07-22 21:25:55,403 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 77.0) internal successors, (539), 7 states have internal predecessors, (539), 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) [2022-07-22 21:25:55,405 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 92.0) internal successors, (736), 8 states have internal predecessors, (736), 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) [2022-07-22 21:25:55,405 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 92.0) internal successors, (736), 8 states have internal predecessors, (736), 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) [2022-07-22 21:25:55,406 INFO L186 Difference]: Start difference. First operand has 136 places, 108 transitions, 531 flow. Second operand 7 states and 539 transitions. [2022-07-22 21:25:55,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 107 transitions, 557 flow [2022-07-22 21:25:55,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 107 transitions, 518 flow, removed 5 selfloop flow, removed 10 redundant places. [2022-07-22 21:25:55,411 INFO L242 Difference]: Finished difference. Result has 127 places, 0 transitions, 0 flow [2022-07-22 21:25:55,411 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=486, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=127, PETRI_TRANSITIONS=0} [2022-07-22 21:25:55,412 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, 43 predicate places. [2022-07-22 21:25:55,413 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 0 transitions, 0 flow [2022-07-22 21:25:55,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 76.85714285714286) internal successors, (538), 7 states have internal predecessors, (538), 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) [2022-07-22 21:25:55,415 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-07-22 21:25:55,416 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2022-07-22 21:25:55,416 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-07-22 21:25:55,416 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2022-07-22 21:25:55,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-22 21:25:55,417 INFO L356 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:25:55,420 INFO L226 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-07-22 21:25:55,420 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-22 21:25:55,431 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.07 09:25:55 BasicIcfg [2022-07-22 21:25:55,431 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-22 21:25:55,432 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-22 21:25:55,432 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-22 21:25:55,432 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-22 21:25:55,432 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 09:25:51" (3/4) ... [2022-07-22 21:25:55,435 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-22 21:25:55,440 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2022-07-22 21:25:55,441 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2022-07-22 21:25:55,441 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2022-07-22 21:25:55,446 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2022-07-22 21:25:55,446 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-07-22 21:25:55,446 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-22 21:25:55,447 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-22 21:25:55,477 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-22 21:25:55,478 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-22 21:25:55,479 INFO L158 Benchmark]: Toolchain (without parser) took 5438.47ms. Allocated memory was 88.1MB in the beginning and 161.5MB in the end (delta: 73.4MB). Free memory was 51.0MB in the beginning and 119.5MB in the end (delta: -68.5MB). Peak memory consumption was 5.2MB. Max. memory is 16.1GB. [2022-07-22 21:25:55,479 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 88.1MB. Free memory is still 68.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 21:25:55,479 INFO L158 Benchmark]: CACSL2BoogieTranslator took 466.86ms. Allocated memory was 88.1MB in the beginning and 111.1MB in the end (delta: 23.1MB). Free memory was 50.8MB in the beginning and 76.0MB in the end (delta: -25.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-07-22 21:25:55,479 INFO L158 Benchmark]: Boogie Procedure Inliner took 65.35ms. Allocated memory is still 111.1MB. Free memory was 76.0MB in the beginning and 73.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-22 21:25:55,480 INFO L158 Benchmark]: Boogie Preprocessor took 54.98ms. Allocated memory is still 111.1MB. Free memory was 73.9MB in the beginning and 72.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-22 21:25:55,480 INFO L158 Benchmark]: RCFGBuilder took 427.88ms. Allocated memory is still 111.1MB. Free memory was 72.3MB in the beginning and 60.2MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-07-22 21:25:55,480 INFO L158 Benchmark]: TraceAbstraction took 4368.52ms. Allocated memory was 111.1MB in the beginning and 161.5MB in the end (delta: 50.3MB). Free memory was 59.3MB in the beginning and 122.7MB in the end (delta: -63.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 21:25:55,481 INFO L158 Benchmark]: Witness Printer took 46.24ms. Allocated memory is still 161.5MB. Free memory was 122.7MB in the beginning and 119.5MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-07-22 21:25:55,482 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 88.1MB. Free memory is still 68.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 466.86ms. Allocated memory was 88.1MB in the beginning and 111.1MB in the end (delta: 23.1MB). Free memory was 50.8MB in the beginning and 76.0MB in the end (delta: -25.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 65.35ms. Allocated memory is still 111.1MB. Free memory was 76.0MB in the beginning and 73.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 54.98ms. Allocated memory is still 111.1MB. Free memory was 73.9MB in the beginning and 72.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 427.88ms. Allocated memory is still 111.1MB. Free memory was 72.3MB in the beginning and 60.2MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 4368.52ms. Allocated memory was 111.1MB in the beginning and 161.5MB in the end (delta: 50.3MB). Free memory was 59.3MB in the beginning and 122.7MB in the end (delta: -63.4MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 46.24ms. Allocated memory is still 161.5MB. Free memory was 122.7MB in the beginning and 119.5MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. 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, 115 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 4.3s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 404 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 404 mSDsluCounter, 484 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 492 mSDsCounter, 116 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 551 IncrementalHoareTripleChecker+Invalid, 667 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 116 mSolverCounterUnsat, 114 mSDtfsCounter, 551 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 124 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=629occurred in iteration=7, InterpolantAutomatonStates: 100, 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, 0.3s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 561 NumberOfCodeBlocks, 561 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 552 ConstructedInterpolants, 0 QuantifiedInterpolants, 2548 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! [2022-07-22 21:25:55,535 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