./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/mix027_power.oepc_pso.oepc_rmo.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 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/mix027_power.oepc_pso.oepc_rmo.oepc.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 d8f535cb798ce58a79ec2e9a728d4e5d884025e215c7cfd9880fc53267dd5a20 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 08:40:30,751 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 08:40:30,754 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 08:40:30,799 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 08:40:30,800 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 08:40:30,802 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 08:40:30,806 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 08:40:30,808 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 08:40:30,810 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 08:40:30,815 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 08:40:30,816 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 08:40:30,818 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 08:40:30,818 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 08:40:30,820 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 08:40:30,821 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 08:40:30,826 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 08:40:30,827 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 08:40:30,828 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 08:40:30,830 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 08:40:30,835 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 08:40:30,836 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 08:40:30,837 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 08:40:30,839 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 08:40:30,840 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 08:40:30,841 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 08:40:30,845 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 08:40:30,845 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 08:40:30,845 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 08:40:30,846 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 08:40:30,846 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 08:40:30,847 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 08:40:30,847 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 08:40:30,849 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 08:40:30,849 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 08:40:30,851 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 08:40:30,851 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 08:40:30,852 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 08:40:30,852 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 08:40:30,852 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 08:40:30,853 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 08:40:30,853 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 08:40:30,854 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 08:40:30,861 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 08:40:30,891 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 08:40:30,892 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 08:40:30,892 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 08:40:30,892 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 08:40:30,893 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 08:40:30,893 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 08:40:30,894 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 08:40:30,894 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 08:40:30,894 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 08:40:30,895 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 08:40:30,895 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 08:40:30,895 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 08:40:30,896 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 08:40:30,896 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 08:40:30,896 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 08:40:30,896 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 08:40:30,896 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 08:40:30,897 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 08:40:30,897 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 08:40:30,897 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 08:40:30,897 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 08:40:30,897 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 08:40:30,898 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 08:40:30,898 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 08:40:30,898 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 08:40:30,898 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 08:40:30,898 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 08:40:30,899 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 08:40:30,899 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 08:40:30,899 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 08:40:30,899 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 08:40:30,899 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 08:40:30,900 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 08:40:30,900 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d8f535cb798ce58a79ec2e9a728d4e5d884025e215c7cfd9880fc53267dd5a20 [2022-07-21 08:40:31,231 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 08:40:31,252 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 08:40:31,255 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 08:40:31,256 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 08:40:31,256 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 08:40:31,258 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/mix027_power.oepc_pso.oepc_rmo.oepc.i [2022-07-21 08:40:31,332 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/281a8abe1/1a284d7dfd114d089a19f383a083adb3/FLAGf1f950443 [2022-07-21 08:40:31,811 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 08:40:31,812 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/mix027_power.oepc_pso.oepc_rmo.oepc.i [2022-07-21 08:40:31,838 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/281a8abe1/1a284d7dfd114d089a19f383a083adb3/FLAGf1f950443 [2022-07-21 08:40:32,344 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/281a8abe1/1a284d7dfd114d089a19f383a083adb3 [2022-07-21 08:40:32,345 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 08:40:32,346 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 08:40:32,347 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 08:40:32,347 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 08:40:32,350 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 08:40:32,350 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:40:32" (1/1) ... [2022-07-21 08:40:32,351 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2465e3ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:40:32, skipping insertion in model container [2022-07-21 08:40:32,352 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:40:32" (1/1) ... [2022-07-21 08:40:32,357 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 08:40:32,389 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 08:40:32,509 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/mix027_power.oepc_pso.oepc_rmo.oepc.i[969,982] [2022-07-21 08:40:32,686 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 08:40:32,694 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 08:40:32,706 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/mix027_power.oepc_pso.oepc_rmo.oepc.i[969,982] [2022-07-21 08:40:32,749 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 08:40:32,795 INFO L208 MainTranslator]: Completed translation [2022-07-21 08:40:32,796 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:40:32 WrapperNode [2022-07-21 08:40:32,796 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 08:40:32,797 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 08:40:32,797 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 08:40:32,798 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 08:40:32,803 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:40:32" (1/1) ... [2022-07-21 08:40:32,819 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:40:32" (1/1) ... [2022-07-21 08:40:32,851 INFO L137 Inliner]: procedures = 177, calls = 69, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 192 [2022-07-21 08:40:32,852 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 08:40:32,852 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 08:40:32,852 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 08:40:32,853 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 08:40:32,860 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:40:32" (1/1) ... [2022-07-21 08:40:32,860 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:40:32" (1/1) ... [2022-07-21 08:40:32,865 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:40:32" (1/1) ... [2022-07-21 08:40:32,866 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:40:32" (1/1) ... [2022-07-21 08:40:32,878 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:40:32" (1/1) ... [2022-07-21 08:40:32,883 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:40:32" (1/1) ... [2022-07-21 08:40:32,887 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:40:32" (1/1) ... [2022-07-21 08:40:32,891 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 08:40:32,892 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 08:40:32,892 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 08:40:32,892 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 08:40:32,893 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:40:32" (1/1) ... [2022-07-21 08:40:32,898 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 08:40:32,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 08:40:32,920 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) [2022-07-21 08:40:32,933 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 [2022-07-21 08:40:32,969 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-21 08:40:32,969 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-07-21 08:40:32,969 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 08:40:32,969 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-21 08:40:32,970 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-21 08:40:32,970 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-07-21 08:40:32,970 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-07-21 08:40:32,970 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-07-21 08:40:32,970 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-07-21 08:40:32,970 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-07-21 08:40:32,970 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-07-21 08:40:32,971 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2022-07-21 08:40:32,971 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2022-07-21 08:40:32,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 08:40:32,971 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-07-21 08:40:32,971 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 08:40:32,971 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 08:40:32,974 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-21 08:40:33,131 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 08:40:33,133 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 08:40:33,630 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 08:40:33,951 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 08:40:33,952 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-21 08:40:33,954 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:40:33 BoogieIcfgContainer [2022-07-21 08:40:33,954 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 08:40:33,956 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 08:40:33,956 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 08:40:33,958 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 08:40:33,959 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 08:40:32" (1/3) ... [2022-07-21 08:40:33,959 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b7d3a88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:40:33, skipping insertion in model container [2022-07-21 08:40:33,959 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:40:32" (2/3) ... [2022-07-21 08:40:33,960 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b7d3a88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:40:33, skipping insertion in model container [2022-07-21 08:40:33,960 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:40:33" (3/3) ... [2022-07-21 08:40:33,961 INFO L111 eAbstractionObserver]: Analyzing ICFG mix027_power.oepc_pso.oepc_rmo.oepc.i [2022-07-21 08:40:33,966 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-21 08:40:33,974 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 08:40:33,974 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-21 08:40:33,974 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-21 08:40:34,047 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-21 08:40:34,092 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 148 places, 137 transitions, 294 flow [2022-07-21 08:40:34,157 INFO L129 PetriNetUnfolder]: 2/133 cut-off events. [2022-07-21 08:40:34,157 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-21 08:40:34,164 INFO L84 FinitePrefix]: Finished finitePrefix Result has 146 conditions, 133 events. 2/133 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 68 event pairs, 0 based on Foata normal form. 0/129 useless extension candidates. Maximal degree in co-relation 92. Up to 2 conditions per place. [2022-07-21 08:40:34,164 INFO L82 GeneralOperation]: Start removeDead. Operand has 148 places, 137 transitions, 294 flow [2022-07-21 08:40:34,173 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 144 places, 133 transitions, 278 flow [2022-07-21 08:40:34,186 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 08:40:34,194 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@65e2cd93, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@f8fb36e [2022-07-21 08:40:34,195 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-07-21 08:40:34,214 INFO L129 PetriNetUnfolder]: 0/49 cut-off events. [2022-07-21 08:40:34,214 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-21 08:40:34,215 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:40:34,215 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] [2022-07-21 08:40:34,216 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-21 08:40:34,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:40:34,221 INFO L85 PathProgramCache]: Analyzing trace with hash 1338494467, now seen corresponding path program 1 times [2022-07-21 08:40:34,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:40:34,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053033335] [2022-07-21 08:40:34,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:40:34,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:40:34,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:40:34,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:40:34,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:40:34,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053033335] [2022-07-21 08:40:34,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053033335] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:40:34,509 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:40:34,509 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 08:40:34,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775819043] [2022-07-21 08:40:34,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:40:34,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 08:40:34,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:40:34,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 08:40:34,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 08:40:34,551 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 137 [2022-07-21 08:40:34,554 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 133 transitions, 278 flow. Second operand has 3 states, 3 states have (on average 122.0) internal successors, (366), 3 states have internal predecessors, (366), 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) [2022-07-21 08:40:34,554 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:40:34,554 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 137 [2022-07-21 08:40:34,555 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:40:34,815 INFO L129 PetriNetUnfolder]: 162/620 cut-off events. [2022-07-21 08:40:34,816 INFO L130 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2022-07-21 08:40:34,822 INFO L84 FinitePrefix]: Finished finitePrefix Result has 926 conditions, 620 events. 162/620 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 3375 event pairs, 132 based on Foata normal form. 41/619 useless extension candidates. Maximal degree in co-relation 869. Up to 191 conditions per place. [2022-07-21 08:40:34,828 INFO L132 encePairwiseOnDemand]: 132/137 looper letters, 18 selfloop transitions, 2 changer transitions 0/137 dead transitions. [2022-07-21 08:40:34,828 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 137 transitions, 335 flow [2022-07-21 08:40:34,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 08:40:34,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-21 08:40:34,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 388 transitions. [2022-07-21 08:40:34,853 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9440389294403893 [2022-07-21 08:40:34,854 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 388 transitions. [2022-07-21 08:40:34,855 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 388 transitions. [2022-07-21 08:40:34,858 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:40:34,861 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 388 transitions. [2022-07-21 08:40:34,865 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 129.33333333333334) internal successors, (388), 3 states have internal predecessors, (388), 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) [2022-07-21 08:40:34,873 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 137.0) internal successors, (548), 4 states have internal predecessors, (548), 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) [2022-07-21 08:40:34,873 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 137.0) internal successors, (548), 4 states have internal predecessors, (548), 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) [2022-07-21 08:40:34,875 INFO L186 Difference]: Start difference. First operand has 144 places, 133 transitions, 278 flow. Second operand 3 states and 388 transitions. [2022-07-21 08:40:34,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 137 transitions, 335 flow [2022-07-21 08:40:34,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 137 transitions, 328 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-07-21 08:40:34,884 INFO L242 Difference]: Finished difference. Result has 140 places, 129 transitions, 270 flow [2022-07-21 08:40:34,886 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=270, PETRI_PLACES=140, PETRI_TRANSITIONS=129} [2022-07-21 08:40:34,889 INFO L279 CegarLoopForPetriNet]: 144 programPoint places, -4 predicate places. [2022-07-21 08:40:34,890 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 129 transitions, 270 flow [2022-07-21 08:40:34,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 122.0) internal successors, (366), 3 states have internal predecessors, (366), 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) [2022-07-21 08:40:34,890 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:40:34,891 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:40:34,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 08:40:34,891 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-21 08:40:34,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:40:34,893 INFO L85 PathProgramCache]: Analyzing trace with hash 1196194587, now seen corresponding path program 1 times [2022-07-21 08:40:34,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:40:34,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595442022] [2022-07-21 08:40:34,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:40:34,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:40:34,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:40:35,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:40:35,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:40:35,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595442022] [2022-07-21 08:40:35,174 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595442022] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:40:35,176 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:40:35,176 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:40:35,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657122530] [2022-07-21 08:40:35,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:40:35,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:40:35,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:40:35,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:40:35,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:40:35,181 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 137 [2022-07-21 08:40:35,187 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 129 transitions, 270 flow. Second operand has 7 states, 7 states have (on average 106.28571428571429) internal successors, (744), 7 states have internal predecessors, (744), 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) [2022-07-21 08:40:35,187 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:40:35,187 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 137 [2022-07-21 08:40:35,187 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:40:39,863 INFO L129 PetriNetUnfolder]: 14081/30815 cut-off events. [2022-07-21 08:40:39,863 INFO L130 PetriNetUnfolder]: For 1103/1103 co-relation queries the response was YES. [2022-07-21 08:40:40,017 INFO L84 FinitePrefix]: Finished finitePrefix Result has 51441 conditions, 30815 events. 14081/30815 cut-off events. For 1103/1103 co-relation queries the response was YES. Maximal size of possible extension queue 1320. Compared 323802 event pairs, 1148 based on Foata normal form. 0/30243 useless extension candidates. Maximal degree in co-relation 51381. Up to 6804 conditions per place. [2022-07-21 08:40:40,134 INFO L132 encePairwiseOnDemand]: 123/137 looper letters, 48 selfloop transitions, 12 changer transitions 128/275 dead transitions. [2022-07-21 08:40:40,135 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 275 transitions, 944 flow [2022-07-21 08:40:40,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-21 08:40:40,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-21 08:40:40,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1530 transitions. [2022-07-21 08:40:40,139 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8590679393599102 [2022-07-21 08:40:40,140 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1530 transitions. [2022-07-21 08:40:40,140 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1530 transitions. [2022-07-21 08:40:40,141 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:40:40,141 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1530 transitions. [2022-07-21 08:40:40,144 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 117.6923076923077) internal successors, (1530), 13 states have internal predecessors, (1530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:40:40,149 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 137.0) internal successors, (1918), 14 states have internal predecessors, (1918), 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) [2022-07-21 08:40:40,150 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 137.0) internal successors, (1918), 14 states have internal predecessors, (1918), 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) [2022-07-21 08:40:40,151 INFO L186 Difference]: Start difference. First operand has 140 places, 129 transitions, 270 flow. Second operand 13 states and 1530 transitions. [2022-07-21 08:40:40,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 275 transitions, 944 flow [2022-07-21 08:40:40,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 275 transitions, 918 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-21 08:40:40,159 INFO L242 Difference]: Finished difference. Result has 162 places, 124 transitions, 370 flow [2022-07-21 08:40:40,159 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=370, PETRI_PLACES=162, PETRI_TRANSITIONS=124} [2022-07-21 08:40:40,160 INFO L279 CegarLoopForPetriNet]: 144 programPoint places, 18 predicate places. [2022-07-21 08:40:40,161 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 124 transitions, 370 flow [2022-07-21 08:40:40,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 106.28571428571429) internal successors, (744), 7 states have internal predecessors, (744), 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) [2022-07-21 08:40:40,161 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:40:40,162 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:40:40,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 08:40:40,162 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-21 08:40:40,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:40:40,163 INFO L85 PathProgramCache]: Analyzing trace with hash -1504018406, now seen corresponding path program 1 times [2022-07-21 08:40:40,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:40:40,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245794474] [2022-07-21 08:40:40,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:40:40,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:40:40,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:40:40,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:40:40,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:40:40,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245794474] [2022-07-21 08:40:40,338 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245794474] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:40:40,339 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:40:40,339 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:40:40,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498060274] [2022-07-21 08:40:40,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:40:40,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:40:40,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:40:40,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:40:40,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:40:40,341 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 137 [2022-07-21 08:40:40,342 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 124 transitions, 370 flow. Second operand has 7 states, 7 states have (on average 106.42857142857143) internal successors, (745), 7 states have internal predecessors, (745), 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) [2022-07-21 08:40:40,343 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:40:40,343 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 137 [2022-07-21 08:40:40,343 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:40:42,923 INFO L129 PetriNetUnfolder]: 9125/16233 cut-off events. [2022-07-21 08:40:42,923 INFO L130 PetriNetUnfolder]: For 24685/24688 co-relation queries the response was YES. [2022-07-21 08:40:43,029 INFO L84 FinitePrefix]: Finished finitePrefix Result has 46996 conditions, 16233 events. 9125/16233 cut-off events. For 24685/24688 co-relation queries the response was YES. Maximal size of possible extension queue 829. Compared 132208 event pairs, 1132 based on Foata normal form. 370/16387 useless extension candidates. Maximal degree in co-relation 46920. Up to 3567 conditions per place. [2022-07-21 08:40:43,093 INFO L132 encePairwiseOnDemand]: 126/137 looper letters, 54 selfloop transitions, 12 changer transitions 118/271 dead transitions. [2022-07-21 08:40:43,093 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 271 transitions, 1482 flow [2022-07-21 08:40:43,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-21 08:40:43,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-21 08:40:43,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1507 transitions. [2022-07-21 08:40:43,098 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8461538461538461 [2022-07-21 08:40:43,098 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1507 transitions. [2022-07-21 08:40:43,099 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1507 transitions. [2022-07-21 08:40:43,100 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:40:43,100 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1507 transitions. [2022-07-21 08:40:43,103 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 115.92307692307692) internal successors, (1507), 13 states have internal predecessors, (1507), 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) [2022-07-21 08:40:43,107 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 137.0) internal successors, (1918), 14 states have internal predecessors, (1918), 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) [2022-07-21 08:40:43,108 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 137.0) internal successors, (1918), 14 states have internal predecessors, (1918), 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) [2022-07-21 08:40:43,108 INFO L186 Difference]: Start difference. First operand has 162 places, 124 transitions, 370 flow. Second operand 13 states and 1507 transitions. [2022-07-21 08:40:43,108 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 271 transitions, 1482 flow [2022-07-21 08:40:43,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 271 transitions, 1458 flow, removed 12 selfloop flow, removed 3 redundant places. [2022-07-21 08:40:43,221 INFO L242 Difference]: Finished difference. Result has 160 places, 132 transitions, 528 flow [2022-07-21 08:40:43,222 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=364, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=528, PETRI_PLACES=160, PETRI_TRANSITIONS=132} [2022-07-21 08:40:43,223 INFO L279 CegarLoopForPetriNet]: 144 programPoint places, 16 predicate places. [2022-07-21 08:40:43,223 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 132 transitions, 528 flow [2022-07-21 08:40:43,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 106.42857142857143) internal successors, (745), 7 states have internal predecessors, (745), 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) [2022-07-21 08:40:43,224 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:40:43,224 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:40:43,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 08:40:43,224 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-21 08:40:43,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:40:43,225 INFO L85 PathProgramCache]: Analyzing trace with hash -2053332378, now seen corresponding path program 1 times [2022-07-21 08:40:43,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:40:43,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959911585] [2022-07-21 08:40:43,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:40:43,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:40:43,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:40:43,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:40:43,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:40:43,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959911585] [2022-07-21 08:40:43,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959911585] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:40:43,416 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:40:43,416 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 08:40:43,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247210630] [2022-07-21 08:40:43,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:40:43,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 08:40:43,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:40:43,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 08:40:43,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 08:40:43,420 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 137 [2022-07-21 08:40:43,421 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 132 transitions, 528 flow. Second operand has 6 states, 6 states have (on average 112.0) internal successors, (672), 6 states have internal predecessors, (672), 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) [2022-07-21 08:40:43,421 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:40:43,421 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 137 [2022-07-21 08:40:43,421 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:40:48,006 INFO L129 PetriNetUnfolder]: 19000/33516 cut-off events. [2022-07-21 08:40:48,006 INFO L130 PetriNetUnfolder]: For 59612/100384 co-relation queries the response was YES. [2022-07-21 08:40:48,232 INFO L84 FinitePrefix]: Finished finitePrefix Result has 80106 conditions, 33516 events. 19000/33516 cut-off events. For 59612/100384 co-relation queries the response was YES. Maximal size of possible extension queue 2266. Compared 310818 event pairs, 1398 based on Foata normal form. 518/31834 useless extension candidates. Maximal degree in co-relation 80023. Up to 10325 conditions per place. [2022-07-21 08:40:48,372 INFO L132 encePairwiseOnDemand]: 126/137 looper letters, 101 selfloop transitions, 20 changer transitions 0/228 dead transitions. [2022-07-21 08:40:48,372 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 228 transitions, 1178 flow [2022-07-21 08:40:48,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 08:40:48,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-21 08:40:48,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1207 transitions. [2022-07-21 08:40:48,376 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.881021897810219 [2022-07-21 08:40:48,377 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1207 transitions. [2022-07-21 08:40:48,381 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1207 transitions. [2022-07-21 08:40:48,381 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:40:48,381 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1207 transitions. [2022-07-21 08:40:48,385 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 120.7) internal successors, (1207), 10 states have internal predecessors, (1207), 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) [2022-07-21 08:40:48,388 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 137.0) internal successors, (1507), 11 states have internal predecessors, (1507), 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) [2022-07-21 08:40:48,389 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 137.0) internal successors, (1507), 11 states have internal predecessors, (1507), 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) [2022-07-21 08:40:48,389 INFO L186 Difference]: Start difference. First operand has 160 places, 132 transitions, 528 flow. Second operand 10 states and 1207 transitions. [2022-07-21 08:40:48,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 228 transitions, 1178 flow [2022-07-21 08:40:48,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 228 transitions, 1157 flow, removed 9 selfloop flow, removed 4 redundant places. [2022-07-21 08:40:48,482 INFO L242 Difference]: Finished difference. Result has 162 places, 150 transitions, 650 flow [2022-07-21 08:40:48,482 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=507, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=650, PETRI_PLACES=162, PETRI_TRANSITIONS=150} [2022-07-21 08:40:48,484 INFO L279 CegarLoopForPetriNet]: 144 programPoint places, 18 predicate places. [2022-07-21 08:40:48,484 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 150 transitions, 650 flow [2022-07-21 08:40:48,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 112.0) internal successors, (672), 6 states have internal predecessors, (672), 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) [2022-07-21 08:40:48,485 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:40:48,485 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:40:48,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-21 08:40:48,485 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-21 08:40:48,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:40:48,486 INFO L85 PathProgramCache]: Analyzing trace with hash -671718172, now seen corresponding path program 1 times [2022-07-21 08:40:48,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:40:48,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818178293] [2022-07-21 08:40:48,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:40:48,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:40:48,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:40:48,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:40:48,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:40:48,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818178293] [2022-07-21 08:40:48,652 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818178293] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:40:48,652 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:40:48,653 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:40:48,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651842566] [2022-07-21 08:40:48,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:40:48,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:40:48,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:40:48,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:40:48,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:40:48,655 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 137 [2022-07-21 08:40:48,656 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 150 transitions, 650 flow. Second operand has 7 states, 7 states have (on average 107.0) internal successors, (749), 7 states have internal predecessors, (749), 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) [2022-07-21 08:40:48,656 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:40:48,656 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 137 [2022-07-21 08:40:48,657 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:40:51,842 INFO L129 PetriNetUnfolder]: 9362/22841 cut-off events. [2022-07-21 08:40:51,842 INFO L130 PetriNetUnfolder]: For 38647/42643 co-relation queries the response was YES. [2022-07-21 08:40:52,048 INFO L84 FinitePrefix]: Finished finitePrefix Result has 66691 conditions, 22841 events. 9362/22841 cut-off events. For 38647/42643 co-relation queries the response was YES. Maximal size of possible extension queue 1506. Compared 262103 event pairs, 2241 based on Foata normal form. 529/21898 useless extension candidates. Maximal degree in co-relation 66599. Up to 3799 conditions per place. [2022-07-21 08:40:52,166 INFO L132 encePairwiseOnDemand]: 123/137 looper letters, 120 selfloop transitions, 48 changer transitions 0/273 dead transitions. [2022-07-21 08:40:52,167 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 273 transitions, 1725 flow [2022-07-21 08:40:52,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-21 08:40:52,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-21 08:40:52,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1493 transitions. [2022-07-21 08:40:52,171 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8382930937675463 [2022-07-21 08:40:52,171 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1493 transitions. [2022-07-21 08:40:52,171 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1493 transitions. [2022-07-21 08:40:52,172 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:40:52,172 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1493 transitions. [2022-07-21 08:40:52,175 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 114.84615384615384) internal successors, (1493), 13 states have internal predecessors, (1493), 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) [2022-07-21 08:40:52,179 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 137.0) internal successors, (1918), 14 states have internal predecessors, (1918), 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) [2022-07-21 08:40:52,180 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 137.0) internal successors, (1918), 14 states have internal predecessors, (1918), 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) [2022-07-21 08:40:52,180 INFO L186 Difference]: Start difference. First operand has 162 places, 150 transitions, 650 flow. Second operand 13 states and 1493 transitions. [2022-07-21 08:40:52,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 273 transitions, 1725 flow [2022-07-21 08:40:52,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 273 transitions, 1687 flow, removed 18 selfloop flow, removed 7 redundant places. [2022-07-21 08:40:52,367 INFO L242 Difference]: Finished difference. Result has 179 places, 184 transitions, 1164 flow [2022-07-21 08:40:52,367 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=624, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1164, PETRI_PLACES=179, PETRI_TRANSITIONS=184} [2022-07-21 08:40:52,368 INFO L279 CegarLoopForPetriNet]: 144 programPoint places, 35 predicate places. [2022-07-21 08:40:52,368 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 184 transitions, 1164 flow [2022-07-21 08:40:52,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 107.0) internal successors, (749), 7 states have internal predecessors, (749), 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) [2022-07-21 08:40:52,369 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:40:52,369 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:40:52,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-21 08:40:52,369 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-21 08:40:52,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:40:52,370 INFO L85 PathProgramCache]: Analyzing trace with hash 1763515646, now seen corresponding path program 1 times [2022-07-21 08:40:52,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:40:52,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170214876] [2022-07-21 08:40:52,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:40:52,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:40:52,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:40:52,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:40:52,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:40:52,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170214876] [2022-07-21 08:40:52,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170214876] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:40:52,734 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:40:52,734 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:40:52,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582426463] [2022-07-21 08:40:52,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:40:52,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:40:52,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:40:52,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:40:52,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:40:52,738 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 137 [2022-07-21 08:40:52,739 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 184 transitions, 1164 flow. Second operand has 7 states, 7 states have (on average 112.0) internal successors, (784), 7 states have internal predecessors, (784), 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) [2022-07-21 08:40:52,740 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:40:52,740 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 137 [2022-07-21 08:40:52,740 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:41:00,136 INFO L129 PetriNetUnfolder]: 27314/49507 cut-off events. [2022-07-21 08:41:00,137 INFO L130 PetriNetUnfolder]: For 153324/203106 co-relation queries the response was YES. [2022-07-21 08:41:00,614 INFO L84 FinitePrefix]: Finished finitePrefix Result has 161728 conditions, 49507 events. 27314/49507 cut-off events. For 153324/203106 co-relation queries the response was YES. Maximal size of possible extension queue 3281. Compared 501588 event pairs, 1546 based on Foata normal form. 1200/48879 useless extension candidates. Maximal degree in co-relation 161629. Up to 10430 conditions per place. [2022-07-21 08:41:00,753 INFO L132 encePairwiseOnDemand]: 126/137 looper letters, 138 selfloop transitions, 38 changer transitions 0/313 dead transitions. [2022-07-21 08:41:00,754 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 313 transitions, 2404 flow [2022-07-21 08:41:00,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-21 08:41:00,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-21 08:41:00,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1574 transitions. [2022-07-21 08:41:00,759 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8837731611454239 [2022-07-21 08:41:00,759 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1574 transitions. [2022-07-21 08:41:00,759 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1574 transitions. [2022-07-21 08:41:00,760 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:41:00,760 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1574 transitions. [2022-07-21 08:41:00,763 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 121.07692307692308) internal successors, (1574), 13 states have internal predecessors, (1574), 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) [2022-07-21 08:41:00,766 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 137.0) internal successors, (1918), 14 states have internal predecessors, (1918), 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) [2022-07-21 08:41:00,767 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 137.0) internal successors, (1918), 14 states have internal predecessors, (1918), 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) [2022-07-21 08:41:00,767 INFO L186 Difference]: Start difference. First operand has 179 places, 184 transitions, 1164 flow. Second operand 13 states and 1574 transitions. [2022-07-21 08:41:00,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 313 transitions, 2404 flow [2022-07-21 08:41:02,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 313 transitions, 2386 flow, removed 9 selfloop flow, removed 0 redundant places. [2022-07-21 08:41:02,441 INFO L242 Difference]: Finished difference. Result has 197 places, 201 transitions, 1397 flow [2022-07-21 08:41:02,441 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=1104, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1397, PETRI_PLACES=197, PETRI_TRANSITIONS=201} [2022-07-21 08:41:02,442 INFO L279 CegarLoopForPetriNet]: 144 programPoint places, 53 predicate places. [2022-07-21 08:41:02,442 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 201 transitions, 1397 flow [2022-07-21 08:41:02,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 112.0) internal successors, (784), 7 states have internal predecessors, (784), 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) [2022-07-21 08:41:02,443 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:41:02,443 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:41:02,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-21 08:41:02,443 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-21 08:41:02,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:41:02,443 INFO L85 PathProgramCache]: Analyzing trace with hash -415170025, now seen corresponding path program 1 times [2022-07-21 08:41:02,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:41:02,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623587641] [2022-07-21 08:41:02,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:41:02,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:41:02,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:41:02,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:41:02,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:41:02,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623587641] [2022-07-21 08:41:02,638 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623587641] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:41:02,639 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:41:02,639 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 08:41:02,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828213971] [2022-07-21 08:41:02,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:41:02,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 08:41:02,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:41:02,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 08:41:02,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-21 08:41:02,645 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 137 [2022-07-21 08:41:02,646 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 201 transitions, 1397 flow. Second operand has 8 states, 8 states have (on average 112.125) internal successors, (897), 8 states have internal predecessors, (897), 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) [2022-07-21 08:41:02,646 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:41:02,646 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 137 [2022-07-21 08:41:02,646 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:41:10,314 INFO L129 PetriNetUnfolder]: 26344/47933 cut-off events. [2022-07-21 08:41:10,314 INFO L130 PetriNetUnfolder]: For 221863/271120 co-relation queries the response was YES. [2022-07-21 08:41:10,913 INFO L84 FinitePrefix]: Finished finitePrefix Result has 187071 conditions, 47933 events. 26344/47933 cut-off events. For 221863/271120 co-relation queries the response was YES. Maximal size of possible extension queue 3278. Compared 491329 event pairs, 1392 based on Foata normal form. 870/47012 useless extension candidates. Maximal degree in co-relation 186963. Up to 10073 conditions per place. [2022-07-21 08:41:11,054 INFO L132 encePairwiseOnDemand]: 126/137 looper letters, 131 selfloop transitions, 58 changer transitions 46/353 dead transitions. [2022-07-21 08:41:11,054 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 353 transitions, 3035 flow [2022-07-21 08:41:11,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-21 08:41:11,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-21 08:41:11,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1940 transitions. [2022-07-21 08:41:11,059 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.885036496350365 [2022-07-21 08:41:11,059 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1940 transitions. [2022-07-21 08:41:11,059 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1940 transitions. [2022-07-21 08:41:11,061 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:41:11,061 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1940 transitions. [2022-07-21 08:41:11,065 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 121.25) internal successors, (1940), 16 states have internal predecessors, (1940), 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) [2022-07-21 08:41:11,069 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 137.0) internal successors, (2329), 17 states have internal predecessors, (2329), 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) [2022-07-21 08:41:11,070 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 137.0) internal successors, (2329), 17 states have internal predecessors, (2329), 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) [2022-07-21 08:41:11,070 INFO L186 Difference]: Start difference. First operand has 197 places, 201 transitions, 1397 flow. Second operand 16 states and 1940 transitions. [2022-07-21 08:41:11,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 353 transitions, 3035 flow [2022-07-21 08:41:20,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 353 transitions, 2911 flow, removed 49 selfloop flow, removed 5 redundant places. [2022-07-21 08:41:20,894 INFO L242 Difference]: Finished difference. Result has 208 places, 208 transitions, 1538 flow [2022-07-21 08:41:20,894 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=1143, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1538, PETRI_PLACES=208, PETRI_TRANSITIONS=208} [2022-07-21 08:41:20,895 INFO L279 CegarLoopForPetriNet]: 144 programPoint places, 64 predicate places. [2022-07-21 08:41:20,895 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 208 transitions, 1538 flow [2022-07-21 08:41:20,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 112.125) internal successors, (897), 8 states have internal predecessors, (897), 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) [2022-07-21 08:41:20,896 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:41:20,896 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:41:20,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-21 08:41:20,896 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-21 08:41:20,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:41:20,897 INFO L85 PathProgramCache]: Analyzing trace with hash -1822682210, now seen corresponding path program 1 times [2022-07-21 08:41:20,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:41:20,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651005197] [2022-07-21 08:41:20,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:41:20,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:41:20,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:41:21,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:41:21,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:41:21,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651005197] [2022-07-21 08:41:21,037 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651005197] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:41:21,038 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:41:21,038 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 08:41:21,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169763434] [2022-07-21 08:41:21,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:41:21,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 08:41:21,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:41:21,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 08:41:21,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-07-21 08:41:21,040 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 137 [2022-07-21 08:41:21,041 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 208 transitions, 1538 flow. Second operand has 9 states, 9 states have (on average 112.22222222222223) internal successors, (1010), 9 states have internal predecessors, (1010), 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) [2022-07-21 08:41:21,041 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:41:21,042 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 137 [2022-07-21 08:41:21,042 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand