./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/popl20-more-parray-copy.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 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/weaver/popl20-more-parray-copy.wvr.c -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 a1f81f307bb0fd2f7d30845e458dba6e8acf9b3ee1da86e74967e4c3005bce62 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 22:16:30,824 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 22:16:30,826 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 22:16:30,862 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 22:16:30,862 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 22:16:30,863 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 22:16:30,864 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 22:16:30,866 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 22:16:30,867 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 22:16:30,867 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 22:16:30,868 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 22:16:30,869 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 22:16:30,869 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 22:16:30,870 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 22:16:30,870 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 22:16:30,871 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 22:16:30,872 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 22:16:30,872 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 22:16:30,873 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 22:16:30,874 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 22:16:30,875 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 22:16:30,882 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 22:16:30,883 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 22:16:30,884 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 22:16:30,885 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 22:16:30,890 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 22:16:30,890 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 22:16:30,890 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 22:16:30,891 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 22:16:30,895 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 22:16:30,896 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 22:16:30,896 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 22:16:30,897 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 22:16:30,897 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 22:16:30,898 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 22:16:30,898 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 22:16:30,899 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 22:16:30,899 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 22:16:30,899 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 22:16:30,900 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 22:16:30,901 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 22:16:30,902 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 22:16:30,903 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 22:16:30,921 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 22:16:30,921 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 22:16:30,921 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 22:16:30,921 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 22:16:30,922 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 22:16:30,922 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 22:16:30,922 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 22:16:30,923 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 22:16:30,923 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 22:16:30,923 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 22:16:30,923 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 22:16:30,923 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 22:16:30,923 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 22:16:30,924 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 22:16:30,924 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 22:16:30,924 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 22:16:30,924 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 22:16:30,924 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 22:16:30,924 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 22:16:30,924 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 22:16:30,925 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 22:16:30,925 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 22:16:30,925 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 22:16:30,925 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 22:16:30,925 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 22:16:30,925 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 22:16:30,925 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 22:16:30,926 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 22:16:30,926 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 22:16:30,926 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 22:16:30,926 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 22:16:30,926 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 22:16:30,926 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 22:16:30,926 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a1f81f307bb0fd2f7d30845e458dba6e8acf9b3ee1da86e74967e4c3005bce62 [2022-07-13 22:16:31,101 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 22:16:31,129 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 22:16:31,131 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 22:16:31,132 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 22:16:31,133 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 22:16:31,134 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-more-parray-copy.wvr.c [2022-07-13 22:16:31,174 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d39461bfd/a02b10b5e1a84d98901f2127b823d8aa/FLAGf0e780a63 [2022-07-13 22:16:31,568 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 22:16:31,569 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-parray-copy.wvr.c [2022-07-13 22:16:31,581 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d39461bfd/a02b10b5e1a84d98901f2127b823d8aa/FLAGf0e780a63 [2022-07-13 22:16:31,596 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d39461bfd/a02b10b5e1a84d98901f2127b823d8aa [2022-07-13 22:16:31,599 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 22:16:31,600 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 22:16:31,602 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 22:16:31,602 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 22:16:31,604 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 22:16:31,605 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 10:16:31" (1/1) ... [2022-07-13 22:16:31,606 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1915d4b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:16:31, skipping insertion in model container [2022-07-13 22:16:31,606 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 10:16:31" (1/1) ... [2022-07-13 22:16:31,610 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 22:16:31,625 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 22:16:31,759 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/weaver/popl20-more-parray-copy.wvr.c[2385,2398] [2022-07-13 22:16:31,765 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 22:16:31,770 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 22:16:31,785 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/weaver/popl20-more-parray-copy.wvr.c[2385,2398] [2022-07-13 22:16:31,787 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 22:16:31,796 INFO L208 MainTranslator]: Completed translation [2022-07-13 22:16:31,796 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:16:31 WrapperNode [2022-07-13 22:16:31,797 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 22:16:31,797 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 22:16:31,797 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 22:16:31,797 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 22:16:31,802 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:16:31" (1/1) ... [2022-07-13 22:16:31,807 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:16:31" (1/1) ... [2022-07-13 22:16:31,824 INFO L137 Inliner]: procedures = 24, calls = 41, calls flagged for inlining = 9, calls inlined = 11, statements flattened = 139 [2022-07-13 22:16:31,825 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 22:16:31,825 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 22:16:31,825 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 22:16:31,826 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 22:16:31,831 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:16:31" (1/1) ... [2022-07-13 22:16:31,831 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:16:31" (1/1) ... [2022-07-13 22:16:31,834 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:16:31" (1/1) ... [2022-07-13 22:16:31,834 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:16:31" (1/1) ... [2022-07-13 22:16:31,840 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:16:31" (1/1) ... [2022-07-13 22:16:31,846 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:16:31" (1/1) ... [2022-07-13 22:16:31,847 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:16:31" (1/1) ... [2022-07-13 22:16:31,849 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 22:16:31,850 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 22:16:31,850 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 22:16:31,850 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 22:16:31,858 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:16:31" (1/1) ... [2022-07-13 22:16:31,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 22:16:31,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:16:31,884 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) [2022-07-13 22:16:31,885 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 [2022-07-13 22:16:31,911 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 22:16:31,911 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-13 22:16:31,911 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-13 22:16:31,911 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-13 22:16:31,912 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-13 22:16:31,912 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-07-13 22:16:31,912 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-07-13 22:16:31,912 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 22:16:31,912 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-13 22:16:31,912 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-13 22:16:31,913 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-13 22:16:31,913 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 22:16:31,913 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 22:16:31,913 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-13 22:16:31,913 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-13 22:16:31,914 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-13 22:16:32,006 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 22:16:32,024 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 22:16:32,255 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 22:16:32,262 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 22:16:32,262 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2022-07-13 22:16:32,267 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 10:16:32 BoogieIcfgContainer [2022-07-13 22:16:32,268 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 22:16:32,269 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 22:16:32,269 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 22:16:32,272 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 22:16:32,272 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 10:16:31" (1/3) ... [2022-07-13 22:16:32,273 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67c4b120 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 10:16:32, skipping insertion in model container [2022-07-13 22:16:32,273 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:16:31" (2/3) ... [2022-07-13 22:16:32,274 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67c4b120 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 10:16:32, skipping insertion in model container [2022-07-13 22:16:32,274 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 10:16:32" (3/3) ... [2022-07-13 22:16:32,277 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-more-parray-copy.wvr.c [2022-07-13 22:16:32,281 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-13 22:16:32,287 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 22:16:32,287 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 22:16:32,287 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-13 22:16:32,347 INFO L135 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-07-13 22:16:32,374 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 205 places, 212 transitions, 448 flow [2022-07-13 22:16:32,437 INFO L129 PetriNetUnfolder]: 17/209 cut-off events. [2022-07-13 22:16:32,441 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-13 22:16:32,445 INFO L84 FinitePrefix]: Finished finitePrefix Result has 222 conditions, 209 events. 17/209 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 126 event pairs, 0 based on Foata normal form. 0/191 useless extension candidates. Maximal degree in co-relation 154. Up to 2 conditions per place. [2022-07-13 22:16:32,446 INFO L82 GeneralOperation]: Start removeDead. Operand has 205 places, 212 transitions, 448 flow [2022-07-13 22:16:32,458 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 191 places, 198 transitions, 414 flow [2022-07-13 22:16:32,465 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 22:16:32,470 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@4d4cce68, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7b328394 [2022-07-13 22:16:32,470 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-07-13 22:16:32,498 INFO L129 PetriNetUnfolder]: 17/197 cut-off events. [2022-07-13 22:16:32,498 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-13 22:16:32,498 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:16:32,499 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:16:32,503 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:16:32,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:16:32,507 INFO L85 PathProgramCache]: Analyzing trace with hash 1627701037, now seen corresponding path program 1 times [2022-07-13 22:16:32,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:16:32,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81399442] [2022-07-13 22:16:32,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:16:32,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:16:32,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:16:32,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:16:32,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:16:32,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81399442] [2022-07-13 22:16:32,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81399442] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:16:32,945 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:16:32,945 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 22:16:32,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501696965] [2022-07-13 22:16:32,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:16:32,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 22:16:32,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:16:32,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 22:16:32,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-13 22:16:32,975 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 212 [2022-07-13 22:16:32,978 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 198 transitions, 414 flow. Second operand has 6 states, 6 states have (on average 148.33333333333334) internal successors, (890), 6 states have internal predecessors, (890), 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) [2022-07-13 22:16:32,978 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:16:32,978 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 212 [2022-07-13 22:16:32,979 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:16:33,209 INFO L129 PetriNetUnfolder]: 281/705 cut-off events. [2022-07-13 22:16:33,210 INFO L130 PetriNetUnfolder]: For 112/112 co-relation queries the response was YES. [2022-07-13 22:16:33,214 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1204 conditions, 705 events. 281/705 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2656 event pairs, 65 based on Foata normal form. 9/540 useless extension candidates. Maximal degree in co-relation 936. Up to 238 conditions per place. [2022-07-13 22:16:33,221 INFO L132 encePairwiseOnDemand]: 189/212 looper letters, 52 selfloop transitions, 6 changer transitions 7/193 dead transitions. [2022-07-13 22:16:33,221 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 193 transitions, 540 flow [2022-07-13 22:16:33,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 22:16:33,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-13 22:16:33,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1068 transitions. [2022-07-13 22:16:33,237 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7196765498652291 [2022-07-13 22:16:33,238 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1068 transitions. [2022-07-13 22:16:33,239 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1068 transitions. [2022-07-13 22:16:33,242 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:16:33,244 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1068 transitions. [2022-07-13 22:16:33,249 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 152.57142857142858) internal successors, (1068), 7 states have internal predecessors, (1068), 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) [2022-07-13 22:16:33,257 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 212.0) internal successors, (1696), 8 states have internal predecessors, (1696), 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) [2022-07-13 22:16:33,258 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 212.0) internal successors, (1696), 8 states have internal predecessors, (1696), 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) [2022-07-13 22:16:33,260 INFO L186 Difference]: Start difference. First operand has 191 places, 198 transitions, 414 flow. Second operand 7 states and 1068 transitions. [2022-07-13 22:16:33,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 193 transitions, 540 flow [2022-07-13 22:16:33,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 193 transitions, 524 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-07-13 22:16:33,270 INFO L242 Difference]: Finished difference. Result has 193 places, 180 transitions, 389 flow [2022-07-13 22:16:33,272 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=378, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=389, PETRI_PLACES=193, PETRI_TRANSITIONS=180} [2022-07-13 22:16:33,276 INFO L279 CegarLoopForPetriNet]: 191 programPoint places, 2 predicate places. [2022-07-13 22:16:33,276 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 180 transitions, 389 flow [2022-07-13 22:16:33,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 148.33333333333334) internal successors, (890), 6 states have internal predecessors, (890), 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) [2022-07-13 22:16:33,277 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:16:33,278 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:16:33,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 22:16:33,278 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:16:33,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:16:33,280 INFO L85 PathProgramCache]: Analyzing trace with hash -957692159, now seen corresponding path program 1 times [2022-07-13 22:16:33,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:16:33,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915262163] [2022-07-13 22:16:33,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:16:33,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:16:33,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:16:33,578 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:16:33,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:16:33,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915262163] [2022-07-13 22:16:33,579 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915262163] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:16:33,579 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:16:33,580 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 22:16:33,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928496306] [2022-07-13 22:16:33,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:16:33,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 22:16:33,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:16:33,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 22:16:33,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-13 22:16:33,587 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 212 [2022-07-13 22:16:33,589 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 180 transitions, 389 flow. Second operand has 9 states, 9 states have (on average 129.55555555555554) internal successors, (1166), 9 states have internal predecessors, (1166), 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) [2022-07-13 22:16:33,589 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:16:33,593 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 212 [2022-07-13 22:16:33,593 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:16:33,813 INFO L129 PetriNetUnfolder]: 283/725 cut-off events. [2022-07-13 22:16:33,813 INFO L130 PetriNetUnfolder]: For 137/137 co-relation queries the response was YES. [2022-07-13 22:16:33,815 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1329 conditions, 725 events. 283/725 cut-off events. For 137/137 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2556 event pairs, 128 based on Foata normal form. 1/559 useless extension candidates. Maximal degree in co-relation 670. Up to 385 conditions per place. [2022-07-13 22:16:33,818 INFO L132 encePairwiseOnDemand]: 196/212 looper letters, 73 selfloop transitions, 11 changer transitions 23/217 dead transitions. [2022-07-13 22:16:33,818 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 217 transitions, 683 flow [2022-07-13 22:16:33,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 22:16:33,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-13 22:16:33,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1214 transitions. [2022-07-13 22:16:33,821 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6362683438155137 [2022-07-13 22:16:33,821 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1214 transitions. [2022-07-13 22:16:33,821 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1214 transitions. [2022-07-13 22:16:33,821 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:16:33,821 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1214 transitions. [2022-07-13 22:16:33,824 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 134.88888888888889) internal successors, (1214), 9 states have internal predecessors, (1214), 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) [2022-07-13 22:16:33,827 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 212.0) internal successors, (2120), 10 states have internal predecessors, (2120), 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) [2022-07-13 22:16:33,827 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 212.0) internal successors, (2120), 10 states have internal predecessors, (2120), 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) [2022-07-13 22:16:33,828 INFO L186 Difference]: Start difference. First operand has 193 places, 180 transitions, 389 flow. Second operand 9 states and 1214 transitions. [2022-07-13 22:16:33,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 217 transitions, 683 flow [2022-07-13 22:16:33,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 217 transitions, 671 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-07-13 22:16:33,835 INFO L242 Difference]: Finished difference. Result has 193 places, 182 transitions, 427 flow [2022-07-13 22:16:33,835 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=381, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=427, PETRI_PLACES=193, PETRI_TRANSITIONS=182} [2022-07-13 22:16:33,836 INFO L279 CegarLoopForPetriNet]: 191 programPoint places, 2 predicate places. [2022-07-13 22:16:33,836 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 182 transitions, 427 flow [2022-07-13 22:16:33,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 129.55555555555554) internal successors, (1166), 9 states have internal predecessors, (1166), 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) [2022-07-13 22:16:33,837 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:16:33,837 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:16:33,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 22:16:33,838 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:16:33,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:16:33,839 INFO L85 PathProgramCache]: Analyzing trace with hash -1282933884, now seen corresponding path program 1 times [2022-07-13 22:16:33,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:16:33,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420840272] [2022-07-13 22:16:33,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:16:33,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:16:33,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:16:33,960 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-13 22:16:33,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:16:33,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420840272] [2022-07-13 22:16:33,961 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420840272] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:16:33,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [919373060] [2022-07-13 22:16:33,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:16:33,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:16:33,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:16:33,973 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:16:33,974 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-13 22:16:34,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:16:34,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-13 22:16:34,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:16:34,217 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-13 22:16:34,218 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 22:16:34,377 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-13 22:16:34,377 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [919373060] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-13 22:16:34,377 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-13 22:16:34,377 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 7] total 14 [2022-07-13 22:16:34,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121558023] [2022-07-13 22:16:34,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:16:34,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 22:16:34,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:16:34,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 22:16:34,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2022-07-13 22:16:34,382 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 212 [2022-07-13 22:16:34,383 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 182 transitions, 427 flow. Second operand has 7 states, 7 states have (on average 161.42857142857142) internal successors, (1130), 7 states have internal predecessors, (1130), 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) [2022-07-13 22:16:34,383 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:16:34,383 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 212 [2022-07-13 22:16:34,383 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:16:34,495 INFO L129 PetriNetUnfolder]: 51/345 cut-off events. [2022-07-13 22:16:34,496 INFO L130 PetriNetUnfolder]: For 96/106 co-relation queries the response was YES. [2022-07-13 22:16:34,497 INFO L84 FinitePrefix]: Finished finitePrefix Result has 578 conditions, 345 events. 51/345 cut-off events. For 96/106 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 844 event pairs, 23 based on Foata normal form. 10/330 useless extension candidates. Maximal degree in co-relation 418. Up to 66 conditions per place. [2022-07-13 22:16:34,499 INFO L132 encePairwiseOnDemand]: 204/212 looper letters, 46 selfloop transitions, 7 changer transitions 0/189 dead transitions. [2022-07-13 22:16:34,499 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 189 transitions, 558 flow [2022-07-13 22:16:34,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 22:16:34,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-13 22:16:34,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1142 transitions. [2022-07-13 22:16:34,502 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7695417789757413 [2022-07-13 22:16:34,502 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1142 transitions. [2022-07-13 22:16:34,502 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1142 transitions. [2022-07-13 22:16:34,503 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:16:34,503 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1142 transitions. [2022-07-13 22:16:34,505 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 163.14285714285714) internal successors, (1142), 7 states have internal predecessors, (1142), 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) [2022-07-13 22:16:34,508 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 212.0) internal successors, (1696), 8 states have internal predecessors, (1696), 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) [2022-07-13 22:16:34,508 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 212.0) internal successors, (1696), 8 states have internal predecessors, (1696), 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) [2022-07-13 22:16:34,508 INFO L186 Difference]: Start difference. First operand has 193 places, 182 transitions, 427 flow. Second operand 7 states and 1142 transitions. [2022-07-13 22:16:34,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 189 transitions, 558 flow [2022-07-13 22:16:34,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 189 transitions, 532 flow, removed 3 selfloop flow, removed 7 redundant places. [2022-07-13 22:16:34,515 INFO L242 Difference]: Finished difference. Result has 193 places, 184 transitions, 435 flow [2022-07-13 22:16:34,515 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=402, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=435, PETRI_PLACES=193, PETRI_TRANSITIONS=184} [2022-07-13 22:16:34,517 INFO L279 CegarLoopForPetriNet]: 191 programPoint places, 2 predicate places. [2022-07-13 22:16:34,517 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 184 transitions, 435 flow [2022-07-13 22:16:34,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 161.42857142857142) internal successors, (1130), 7 states have internal predecessors, (1130), 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) [2022-07-13 22:16:34,518 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:16:34,518 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:16:34,546 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-13 22:16:34,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:16:34,732 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:16:34,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:16:34,732 INFO L85 PathProgramCache]: Analyzing trace with hash -460638022, now seen corresponding path program 1 times [2022-07-13 22:16:34,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:16:34,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859356960] [2022-07-13 22:16:34,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:16:34,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:16:34,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:16:35,871 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-13 22:16:35,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:16:35,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859356960] [2022-07-13 22:16:35,872 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859356960] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:16:35,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1720102876] [2022-07-13 22:16:35,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:16:35,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:16:35,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:16:35,882 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:16:35,883 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-13 22:16:35,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:16:35,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 82 conjunts are in the unsatisfiable core [2022-07-13 22:16:35,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:16:36,022 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-13 22:16:36,056 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-13 22:16:36,056 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2022-07-13 22:16:36,107 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-13 22:16:36,108 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 22 [2022-07-13 22:16:36,403 INFO L356 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2022-07-13 22:16:36,404 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 26 treesize of output 37 [2022-07-13 22:16:36,754 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-07-13 22:16:37,534 INFO L356 Elim1Store]: treesize reduction 8, result has 75.8 percent of original size [2022-07-13 22:16:37,534 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 25 treesize of output 41 [2022-07-13 22:16:37,777 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-13 22:16:38,211 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-13 22:16:38,321 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-13 22:16:38,531 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-13 22:16:38,616 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-13 22:16:38,844 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 23 [2022-07-13 22:16:39,879 INFO L356 Elim1Store]: treesize reduction 26, result has 21.2 percent of original size [2022-07-13 22:16:39,879 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 42 treesize of output 16 [2022-07-13 22:16:39,888 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-13 22:16:39,889 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 22:16:49,011 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 1 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-13 22:16:49,012 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1720102876] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 22:16:49,013 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 22:16:49,013 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 40, 19] total 84 [2022-07-13 22:16:49,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524503946] [2022-07-13 22:16:49,013 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 22:16:49,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2022-07-13 22:16:49,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:16:49,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2022-07-13 22:16:49,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=268, Invalid=6695, Unknown=9, NotChecked=0, Total=6972 [2022-07-13 22:16:49,026 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 212 [2022-07-13 22:16:49,031 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 184 transitions, 435 flow. Second operand has 84 states, 84 states have (on average 72.53571428571429) internal successors, (6093), 84 states have internal predecessors, (6093), 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) [2022-07-13 22:16:49,031 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:16:49,031 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 212 [2022-07-13 22:16:49,031 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:17:18,494 WARN L233 SmtUtils]: Spent 7.01s on a formula simplification. DAG size of input: 111 DAG size of output: 103 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-13 22:17:43,914 WARN L233 SmtUtils]: Spent 16.72s on a formula simplification. DAG size of input: 121 DAG size of output: 113 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-13 22:18:08,361 WARN L233 SmtUtils]: Spent 6.36s on a formula simplification. DAG size of input: 107 DAG size of output: 100 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-13 22:18:33,015 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse0 (= (select |c_#valid| |c_ULTIMATE.start_main_~#t1~0#1.base|) 1)) (.cse3 (not (= |c_ULTIMATE.start_main_~#t1~0#1.base| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (.cse1 (not (= |c_ULTIMATE.start_main_~#t1~0#1.base| |c_ULTIMATE.start_create_fresh_int_array_#res#1.base|))) (.cse2 (= |c_ULTIMATE.start_main_~#t1~0#1.base| |c_ULTIMATE.start_main_~#t2~0#1.base|)) (.cse6 (<= c_~N~0 1))) (and .cse0 (not (= |c_ULTIMATE.start_main_~#t1~0#1.base| c_~A~0.base)) (or .cse1 .cse2) (not (= |c_ULTIMATE.start_main_~#t3~0#1.base| |c_ULTIMATE.start_create_fresh_int_array_#res#1.base|)) (or .cse0 .cse2) (or .cse3 .cse2) .cse3 (not (= |c_ULTIMATE.start_main_~#t3~0#1.base| c_~B~0.base)) (or (< (+ c_thread3Thread1of1ForFork1_~i~2 1) c_~N~0) (forall ((|ULTIMATE.start_main_~k~0#1| Int) (~B~0.offset Int)) (or (<= c_~N~0 |ULTIMATE.start_main_~k~0#1|) (< |ULTIMATE.start_main_~k~0#1| 0) (let ((.cse4 (store (select |c_#memory_int| c_~B~0.base) (+ ~B~0.offset (* c_thread3Thread1of1ForFork1_~i~2 4)) |c_thread3Thread1of1ForFork1_#t~mem6|)) (.cse5 (* |ULTIMATE.start_main_~k~0#1| 4))) (= (select (select (store |c_#memory_int| c_~B~0.base .cse4) c_~A~0.base) (+ .cse5 c_~A~0.offset)) (select .cse4 (+ .cse5 ~B~0.offset))))))) (< |c_#StackHeapBarrier| |c_ULTIMATE.start_main_~#t2~0#1.base|) (<= c_thread2Thread1of1ForFork0_~i~1 0) (not (= |c_ULTIMATE.start_create_fresh_int_array_#res#1.base| c_~A~0.base)) (= |c_ULTIMATE.start_create_fresh_int_array_#res#1.offset| 0) (= (select |c_#valid| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) 1) (= c_~N~0 |c_ULTIMATE.start_create_fresh_int_array_~size#1|) (<= 1 c_~N~0) (<= c_~N~0 |c_ULTIMATE.start_create_fresh_int_array_~size#1|) .cse6 (= |c_ULTIMATE.start_create_fresh_int_array_#in~size#1| c_~N~0) (not (= c_~A~0.base |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|)) (< (+ c_~A~0.base 1) |c_ULTIMATE.start_main_~#t2~0#1.base|) (= c_~B~0.offset 0) .cse1 (<= |c_ULTIMATE.start_create_fresh_int_array_~size#1| c_~N~0) (or (not (= |c_ULTIMATE.start_main_~#t1~0#1.base| c_~B~0.base)) .cse2) (or (<= (+ c_~B~0.offset 1 (* c_thread3Thread1of1ForFork1_~i~2 4)) (* c_~N~0 4)) (and (= (select (select |c_#memory_int| c_~A~0.base) 0) (select (select |c_#memory_int| c_~B~0.base) 0)) .cse6)) (not (= |c_ULTIMATE.start_main_~#t3~0#1.base| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|)) (= c_~A~0.offset 0) (not (= |c_ULTIMATE.start_main_~#t3~0#1.base| c_~A~0.base)) (< (+ |c_ULTIMATE.start_create_fresh_int_array_#res#1.base| 1) |c_ULTIMATE.start_main_~#t2~0#1.base|) (not (= c_~B~0.base c_~A~0.base)) (= (select |c_#valid| |c_ULTIMATE.start_main_~#t3~0#1.base|) 1) (= (select |c_#valid| c_~A~0.base) 1) (< 0 c_~N~0) (= c_thread2Thread1of1ForFork0_~i~1 0) (= 0 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) (< (+ |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| 1) |c_ULTIMATE.start_main_~#t2~0#1.base|) (= (select |c_#valid| |c_ULTIMATE.start_create_fresh_int_array_#res#1.base|) 1))) is different from false [2022-07-13 22:18:46,870 WARN L233 SmtUtils]: Spent 7.82s on a formula simplification. DAG size of input: 108 DAG size of output: 101 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-13 22:19:14,031 WARN L233 SmtUtils]: Spent 18.35s on a formula simplification. DAG size of input: 118 DAG size of output: 111 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-13 22:20:48,794 INFO L129 PetriNetUnfolder]: 30137/51147 cut-off events. [2022-07-13 22:20:48,794 INFO L130 PetriNetUnfolder]: For 18003/23461 co-relation queries the response was YES. [2022-07-13 22:20:48,909 INFO L84 FinitePrefix]: Finished finitePrefix Result has 112762 conditions, 51147 events. 30137/51147 cut-off events. For 18003/23461 co-relation queries the response was YES. Maximal size of possible extension queue 2270. Compared 464840 event pairs, 5423 based on Foata normal form. 5462/54183 useless extension candidates. Maximal degree in co-relation 76770. Up to 5041 conditions per place. [2022-07-13 22:20:49,138 INFO L132 encePairwiseOnDemand]: 144/212 looper letters, 1407 selfloop transitions, 544 changer transitions 109/2122 dead transitions. [2022-07-13 22:20:49,138 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 2122 transitions, 9794 flow [2022-07-13 22:20:49,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 176 states. [2022-07-13 22:20:49,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2022-07-13 22:20:49,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 14125 transitions. [2022-07-13 22:20:49,165 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.3785645368782161 [2022-07-13 22:20:49,165 INFO L72 ComplementDD]: Start complementDD. Operand 176 states and 14125 transitions. [2022-07-13 22:20:49,165 INFO L73 IsDeterministic]: Start isDeterministic. Operand 176 states and 14125 transitions. [2022-07-13 22:20:49,171 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:20:49,171 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 176 states and 14125 transitions. [2022-07-13 22:20:49,195 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 177 states, 176 states have (on average 80.25568181818181) internal successors, (14125), 176 states have internal predecessors, (14125), 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) [2022-07-13 22:20:49,238 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 177 states, 177 states have (on average 212.0) internal successors, (37524), 177 states have internal predecessors, (37524), 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) [2022-07-13 22:20:49,260 INFO L81 ComplementDD]: Finished complementDD. Result has 177 states, 177 states have (on average 212.0) internal successors, (37524), 177 states have internal predecessors, (37524), 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) [2022-07-13 22:20:49,260 INFO L186 Difference]: Start difference. First operand has 193 places, 184 transitions, 435 flow. Second operand 176 states and 14125 transitions. [2022-07-13 22:20:49,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 2122 transitions, 9794 flow [2022-07-13 22:20:49,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 364 places, 2122 transitions, 9699 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-07-13 22:20:49,331 INFO L242 Difference]: Finished difference. Result has 503 places, 811 transitions, 4991 flow [2022-07-13 22:20:49,331 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=427, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=176, PETRI_FLOW=4991, PETRI_PLACES=503, PETRI_TRANSITIONS=811} [2022-07-13 22:20:49,332 INFO L279 CegarLoopForPetriNet]: 191 programPoint places, 312 predicate places. [2022-07-13 22:20:49,332 INFO L495 AbstractCegarLoop]: Abstraction has has 503 places, 811 transitions, 4991 flow [2022-07-13 22:20:49,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 84 states, 84 states have (on average 72.53571428571429) internal successors, (6093), 84 states have internal predecessors, (6093), 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) [2022-07-13 22:20:49,334 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:20:49,334 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:20:49,350 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-13 22:20:49,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-07-13 22:20:49,535 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:20:49,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:20:49,535 INFO L85 PathProgramCache]: Analyzing trace with hash -514890780, now seen corresponding path program 2 times [2022-07-13 22:20:49,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:20:49,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193611866] [2022-07-13 22:20:49,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:20:49,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:20:49,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:20:50,735 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-13 22:20:50,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:20:50,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193611866] [2022-07-13 22:20:50,736 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193611866] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:20:50,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [196629712] [2022-07-13 22:20:50,736 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-13 22:20:50,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:20:50,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:20:50,737 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:20:50,738 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-13 22:20:50,836 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-13 22:20:50,836 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 22:20:50,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 65 conjunts are in the unsatisfiable core [2022-07-13 22:20:50,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:20:50,848 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-13 22:20:50,907 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-07-13 22:20:50,907 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-07-13 22:20:51,183 INFO L356 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-07-13 22:20:51,183 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2022-07-13 22:20:51,499 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-13 22:20:51,554 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-13 22:20:51,663 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 23 [2022-07-13 22:20:52,475 INFO L356 Elim1Store]: treesize reduction 26, result has 21.2 percent of original size [2022-07-13 22:20:52,476 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 42 treesize of output 16 [2022-07-13 22:20:52,483 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-13 22:20:52,483 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 22:20:56,655 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-13 22:20:56,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [196629712] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 22:20:56,656 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 22:20:56,656 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 29, 17] total 70 [2022-07-13 22:20:56,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721854028] [2022-07-13 22:20:56,657 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 22:20:56,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2022-07-13 22:20:56,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:20:56,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2022-07-13 22:20:56,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=222, Invalid=4604, Unknown=4, NotChecked=0, Total=4830 [2022-07-13 22:20:56,700 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 212 [2022-07-13 22:20:56,703 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 503 places, 811 transitions, 4991 flow. Second operand has 70 states, 70 states have (on average 76.2) internal successors, (5334), 70 states have internal predecessors, (5334), 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) [2022-07-13 22:20:56,703 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:20:56,703 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 212 [2022-07-13 22:20:56,703 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand