./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/popl20-more-dec-subseq.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 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-dec-subseq.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 ecda181bd3fe1882667151a04232fb9d04292dd6ca3491d98fdc8de5d539856a --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 21:36:20,817 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 21:36:20,819 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 21:36:20,860 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 21:36:20,862 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 21:36:20,864 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 21:36:20,867 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 21:36:20,870 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 21:36:20,872 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 21:36:20,876 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 21:36:20,877 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 21:36:20,879 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 21:36:20,880 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 21:36:20,882 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 21:36:20,883 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 21:36:20,885 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 21:36:20,886 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 21:36:20,887 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 21:36:20,890 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 21:36:20,891 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 21:36:20,892 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 21:36:20,893 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 21:36:20,894 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 21:36:20,895 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 21:36:20,897 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 21:36:20,904 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 21:36:20,905 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 21:36:20,905 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 21:36:20,906 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 21:36:20,907 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 21:36:20,908 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 21:36:20,908 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 21:36:20,910 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 21:36:20,910 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 21:36:20,911 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 21:36:20,912 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 21:36:20,912 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 21:36:20,914 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 21:36:20,914 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 21:36:20,914 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 21:36:20,915 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 21:36:20,917 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 21:36:20,918 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 21:36:20,948 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 21:36:20,949 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 21:36:20,949 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 21:36:20,949 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 21:36:20,950 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 21:36:20,950 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 21:36:20,951 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 21:36:20,951 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 21:36:20,951 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 21:36:20,952 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 21:36:20,952 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 21:36:20,952 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 21:36:20,953 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 21:36:20,953 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 21:36:20,953 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 21:36:20,953 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 21:36:20,953 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 21:36:20,953 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 21:36:20,954 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 21:36:20,955 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 21:36:20,955 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 21:36:20,955 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 21:36:20,955 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 21:36:20,956 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 21:36:20,956 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 21:36:20,956 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 21:36:20,956 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 21:36:20,956 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 21:36:20,957 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 21:36:20,957 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 21:36:20,957 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 21:36:20,957 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 21:36:20,957 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 21:36:20,958 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ecda181bd3fe1882667151a04232fb9d04292dd6ca3491d98fdc8de5d539856a [2022-07-19 21:36:21,202 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 21:36:21,227 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 21:36:21,229 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 21:36:21,230 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 21:36:21,231 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 21:36:21,232 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-more-dec-subseq.wvr.c [2022-07-19 21:36:21,280 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/393c2a991/adab45303e7e4c58b894e60b657407cd/FLAG2c48a257a [2022-07-19 21:36:21,678 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 21:36:21,679 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-dec-subseq.wvr.c [2022-07-19 21:36:21,686 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/393c2a991/adab45303e7e4c58b894e60b657407cd/FLAG2c48a257a [2022-07-19 21:36:22,091 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/393c2a991/adab45303e7e4c58b894e60b657407cd [2022-07-19 21:36:22,093 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 21:36:22,094 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 21:36:22,095 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 21:36:22,095 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 21:36:22,100 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 21:36:22,101 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:36:22" (1/1) ... [2022-07-19 21:36:22,102 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14fb8c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:36:22, skipping insertion in model container [2022-07-19 21:36:22,102 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:36:22" (1/1) ... [2022-07-19 21:36:22,108 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 21:36:22,129 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 21:36:22,270 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-dec-subseq.wvr.c[2924,2937] [2022-07-19 21:36:22,276 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 21:36:22,282 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 21:36:22,301 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-dec-subseq.wvr.c[2924,2937] [2022-07-19 21:36:22,304 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 21:36:22,315 INFO L208 MainTranslator]: Completed translation [2022-07-19 21:36:22,316 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:36:22 WrapperNode [2022-07-19 21:36:22,316 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 21:36:22,317 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 21:36:22,317 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 21:36:22,318 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 21:36:22,324 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:36:22" (1/1) ... [2022-07-19 21:36:22,342 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:36:22" (1/1) ... [2022-07-19 21:36:22,367 INFO L137 Inliner]: procedures = 24, calls = 45, calls flagged for inlining = 11, calls inlined = 13, statements flattened = 191 [2022-07-19 21:36:22,367 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 21:36:22,368 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 21:36:22,368 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 21:36:22,368 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 21:36:22,375 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:36:22" (1/1) ... [2022-07-19 21:36:22,376 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:36:22" (1/1) ... [2022-07-19 21:36:22,388 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:36:22" (1/1) ... [2022-07-19 21:36:22,392 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:36:22" (1/1) ... [2022-07-19 21:36:22,399 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:36:22" (1/1) ... [2022-07-19 21:36:22,402 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:36:22" (1/1) ... [2022-07-19 21:36:22,404 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:36:22" (1/1) ... [2022-07-19 21:36:22,406 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 21:36:22,415 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 21:36:22,415 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 21:36:22,416 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 21:36:22,417 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:36:22" (1/1) ... [2022-07-19 21:36:22,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 21:36:22,433 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:36:22,444 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) [2022-07-19 21:36:22,447 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 [2022-07-19 21:36:22,473 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 21:36:22,474 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-19 21:36:22,474 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-19 21:36:22,474 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-19 21:36:22,474 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-19 21:36:22,474 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 21:36:22,474 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-19 21:36:22,475 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-19 21:36:22,475 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-07-19 21:36:22,475 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-07-19 21:36:22,475 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-19 21:36:22,475 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 21:36:22,475 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 21:36:22,475 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-19 21:36:22,476 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-19 21:36:22,477 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-19 21:36:22,541 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 21:36:22,543 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 21:36:22,799 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 21:36:22,903 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 21:36:22,910 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-07-19 21:36:22,913 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:36:22 BoogieIcfgContainer [2022-07-19 21:36:22,913 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 21:36:22,915 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 21:36:22,916 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 21:36:22,919 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 21:36:22,919 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 09:36:22" (1/3) ... [2022-07-19 21:36:22,920 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d01013d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:36:22, skipping insertion in model container [2022-07-19 21:36:22,920 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:36:22" (2/3) ... [2022-07-19 21:36:22,920 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d01013d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:36:22, skipping insertion in model container [2022-07-19 21:36:22,920 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:36:22" (3/3) ... [2022-07-19 21:36:22,922 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-more-dec-subseq.wvr.c [2022-07-19 21:36:22,926 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-19 21:36:22,935 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 21:36:22,935 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 21:36:22,935 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-19 21:36:23,010 INFO L135 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-07-19 21:36:23,058 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 181 places, 189 transitions, 394 flow [2022-07-19 21:36:23,121 INFO L129 PetriNetUnfolder]: 15/187 cut-off events. [2022-07-19 21:36:23,122 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-19 21:36:23,125 INFO L84 FinitePrefix]: Finished finitePrefix Result has 196 conditions, 187 events. 15/187 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 100 event pairs, 0 based on Foata normal form. 0/171 useless extension candidates. Maximal degree in co-relation 152. Up to 2 conditions per place. [2022-07-19 21:36:23,126 INFO L82 GeneralOperation]: Start removeDead. Operand has 181 places, 189 transitions, 394 flow [2022-07-19 21:36:23,131 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 170 places, 178 transitions, 368 flow [2022-07-19 21:36:23,139 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 21:36:23,145 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@672c2d35, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@5c75d097 [2022-07-19 21:36:23,145 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-07-19 21:36:23,199 INFO L129 PetriNetUnfolder]: 15/177 cut-off events. [2022-07-19 21:36:23,200 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-19 21:36:23,200 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:36:23,201 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] [2022-07-19 21:36:23,201 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:36:23,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:36:23,206 INFO L85 PathProgramCache]: Analyzing trace with hash 577602676, now seen corresponding path program 1 times [2022-07-19 21:36:23,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:36:23,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813046135] [2022-07-19 21:36:23,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:36:23,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:36:23,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:36:23,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:36:23,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:36:23,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813046135] [2022-07-19 21:36:23,481 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813046135] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:36:23,481 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:36:23,481 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 21:36:23,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274230193] [2022-07-19 21:36:23,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:36:23,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-19 21:36:23,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:36:23,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-19 21:36:23,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-19 21:36:23,528 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 189 [2022-07-19 21:36:23,542 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 178 transitions, 368 flow. Second operand has 2 states, 2 states have (on average 174.5) internal successors, (349), 2 states have internal predecessors, (349), 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) [2022-07-19 21:36:23,545 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:36:23,545 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 189 [2022-07-19 21:36:23,546 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:36:23,608 INFO L129 PetriNetUnfolder]: 14/193 cut-off events. [2022-07-19 21:36:23,608 INFO L130 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2022-07-19 21:36:23,609 INFO L84 FinitePrefix]: Finished finitePrefix Result has 226 conditions, 193 events. 14/193 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 172 event pairs, 3 based on Foata normal form. 15/194 useless extension candidates. Maximal degree in co-relation 147. Up to 20 conditions per place. [2022-07-19 21:36:23,611 INFO L132 encePairwiseOnDemand]: 179/189 looper letters, 7 selfloop transitions, 0 changer transitions 6/168 dead transitions. [2022-07-19 21:36:23,611 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 168 transitions, 362 flow [2022-07-19 21:36:23,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-19 21:36:23,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-07-19 21:36:23,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 359 transitions. [2022-07-19 21:36:23,623 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9497354497354498 [2022-07-19 21:36:23,624 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 359 transitions. [2022-07-19 21:36:23,625 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 359 transitions. [2022-07-19 21:36:23,626 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:36:23,628 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 359 transitions. [2022-07-19 21:36:23,633 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 179.5) internal successors, (359), 2 states have internal predecessors, (359), 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) [2022-07-19 21:36:23,640 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 189.0) internal successors, (567), 3 states have internal predecessors, (567), 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) [2022-07-19 21:36:23,641 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 189.0) internal successors, (567), 3 states have internal predecessors, (567), 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) [2022-07-19 21:36:23,643 INFO L186 Difference]: Start difference. First operand has 170 places, 178 transitions, 368 flow. Second operand 2 states and 359 transitions. [2022-07-19 21:36:23,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 168 transitions, 362 flow [2022-07-19 21:36:23,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 168 transitions, 354 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-07-19 21:36:23,653 INFO L242 Difference]: Finished difference. Result has 167 places, 162 transitions, 328 flow [2022-07-19 21:36:23,656 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=340, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=328, PETRI_PLACES=167, PETRI_TRANSITIONS=162} [2022-07-19 21:36:23,659 INFO L279 CegarLoopForPetriNet]: 170 programPoint places, -3 predicate places. [2022-07-19 21:36:23,659 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 162 transitions, 328 flow [2022-07-19 21:36:23,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 174.5) internal successors, (349), 2 states have internal predecessors, (349), 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) [2022-07-19 21:36:23,660 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:36:23,660 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] [2022-07-19 21:36:23,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 21:36:23,661 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:36:23,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:36:23,662 INFO L85 PathProgramCache]: Analyzing trace with hash 1660907215, now seen corresponding path program 1 times [2022-07-19 21:36:23,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:36:23,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189797510] [2022-07-19 21:36:23,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:36:23,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:36:23,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:36:23,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:36:23,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:36:23,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189797510] [2022-07-19 21:36:23,997 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189797510] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:36:23,998 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:36:23,999 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 21:36:24,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050755117] [2022-07-19 21:36:24,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:36:24,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 21:36:24,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:36:24,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 21:36:24,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-07-19 21:36:24,010 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 189 [2022-07-19 21:36:24,012 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 162 transitions, 328 flow. Second operand has 6 states, 6 states have (on average 136.66666666666666) internal successors, (820), 6 states have internal predecessors, (820), 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) [2022-07-19 21:36:24,012 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:36:24,015 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 189 [2022-07-19 21:36:24,015 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:36:24,250 INFO L129 PetriNetUnfolder]: 56/309 cut-off events. [2022-07-19 21:36:24,251 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-07-19 21:36:24,253 INFO L84 FinitePrefix]: Finished finitePrefix Result has 448 conditions, 309 events. 56/309 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 848 event pairs, 12 based on Foata normal form. 0/287 useless extension candidates. Maximal degree in co-relation 445. Up to 64 conditions per place. [2022-07-19 21:36:24,259 INFO L132 encePairwiseOnDemand]: 183/189 looper letters, 45 selfloop transitions, 5 changer transitions 0/171 dead transitions. [2022-07-19 21:36:24,259 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 171 transitions, 447 flow [2022-07-19 21:36:24,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 21:36:24,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-19 21:36:24,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 837 transitions. [2022-07-19 21:36:24,265 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7380952380952381 [2022-07-19 21:36:24,265 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 837 transitions. [2022-07-19 21:36:24,265 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 837 transitions. [2022-07-19 21:36:24,267 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:36:24,268 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 837 transitions. [2022-07-19 21:36:24,271 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 139.5) internal successors, (837), 6 states have internal predecessors, (837), 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) [2022-07-19 21:36:24,276 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 189.0) internal successors, (1323), 7 states have internal predecessors, (1323), 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) [2022-07-19 21:36:24,277 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 189.0) internal successors, (1323), 7 states have internal predecessors, (1323), 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) [2022-07-19 21:36:24,277 INFO L186 Difference]: Start difference. First operand has 167 places, 162 transitions, 328 flow. Second operand 6 states and 837 transitions. [2022-07-19 21:36:24,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 171 transitions, 447 flow [2022-07-19 21:36:24,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 171 transitions, 447 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-19 21:36:24,282 INFO L242 Difference]: Finished difference. Result has 167 places, 163 transitions, 346 flow [2022-07-19 21:36:24,283 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=346, PETRI_PLACES=167, PETRI_TRANSITIONS=163} [2022-07-19 21:36:24,284 INFO L279 CegarLoopForPetriNet]: 170 programPoint places, -3 predicate places. [2022-07-19 21:36:24,284 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 163 transitions, 346 flow [2022-07-19 21:36:24,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 136.66666666666666) internal successors, (820), 6 states have internal predecessors, (820), 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) [2022-07-19 21:36:24,285 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:36:24,285 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] [2022-07-19 21:36:24,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 21:36:24,286 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:36:24,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:36:24,287 INFO L85 PathProgramCache]: Analyzing trace with hash 730860721, now seen corresponding path program 1 times [2022-07-19 21:36:24,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:36:24,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638148165] [2022-07-19 21:36:24,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:36:24,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:36:24,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:36:24,407 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:36:24,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:36:24,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638148165] [2022-07-19 21:36:24,408 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638148165] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:36:24,408 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:36:24,408 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 21:36:24,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706970560] [2022-07-19 21:36:24,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:36:24,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 21:36:24,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:36:24,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 21:36:24,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-07-19 21:36:24,411 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 189 [2022-07-19 21:36:24,413 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 163 transitions, 346 flow. Second operand has 7 states, 7 states have (on average 141.14285714285714) internal successors, (988), 7 states have internal predecessors, (988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:36:24,413 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:36:24,413 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 189 [2022-07-19 21:36:24,413 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:36:24,582 INFO L129 PetriNetUnfolder]: 57/353 cut-off events. [2022-07-19 21:36:24,583 INFO L130 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2022-07-19 21:36:24,584 INFO L84 FinitePrefix]: Finished finitePrefix Result has 530 conditions, 353 events. 57/353 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 981 event pairs, 12 based on Foata normal form. 4/338 useless extension candidates. Maximal degree in co-relation 525. Up to 60 conditions per place. [2022-07-19 21:36:24,586 INFO L132 encePairwiseOnDemand]: 179/189 looper letters, 46 selfloop transitions, 8 changer transitions 7/182 dead transitions. [2022-07-19 21:36:24,586 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 182 transitions, 511 flow [2022-07-19 21:36:24,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-19 21:36:24,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-07-19 21:36:24,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1158 transitions. [2022-07-19 21:36:24,589 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7658730158730159 [2022-07-19 21:36:24,590 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1158 transitions. [2022-07-19 21:36:24,591 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1158 transitions. [2022-07-19 21:36:24,592 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:36:24,592 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1158 transitions. [2022-07-19 21:36:24,595 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 144.75) internal successors, (1158), 8 states have internal predecessors, (1158), 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) [2022-07-19 21:36:24,598 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 189.0) internal successors, (1701), 9 states have internal predecessors, (1701), 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) [2022-07-19 21:36:24,599 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 189.0) internal successors, (1701), 9 states have internal predecessors, (1701), 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) [2022-07-19 21:36:24,599 INFO L186 Difference]: Start difference. First operand has 167 places, 163 transitions, 346 flow. Second operand 8 states and 1158 transitions. [2022-07-19 21:36:24,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 182 transitions, 511 flow [2022-07-19 21:36:24,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 182 transitions, 501 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-07-19 21:36:24,607 INFO L242 Difference]: Finished difference. Result has 172 places, 164 transitions, 364 flow [2022-07-19 21:36:24,608 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=338, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=364, PETRI_PLACES=172, PETRI_TRANSITIONS=164} [2022-07-19 21:36:24,610 INFO L279 CegarLoopForPetriNet]: 170 programPoint places, 2 predicate places. [2022-07-19 21:36:24,610 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 164 transitions, 364 flow [2022-07-19 21:36:24,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 141.14285714285714) internal successors, (988), 7 states have internal predecessors, (988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:36:24,611 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:36:24,611 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] [2022-07-19 21:36:24,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 21:36:24,612 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:36:24,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:36:24,613 INFO L85 PathProgramCache]: Analyzing trace with hash -1033182428, now seen corresponding path program 1 times [2022-07-19 21:36:24,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:36:24,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268822661] [2022-07-19 21:36:24,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:36:24,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:36:24,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:36:24,765 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-19 21:36:24,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:36:24,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268822661] [2022-07-19 21:36:24,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268822661] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:36:24,766 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:36:24,767 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 21:36:24,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919920263] [2022-07-19 21:36:24,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:36:24,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 21:36:24,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:36:24,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 21:36:24,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 21:36:24,773 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 189 [2022-07-19 21:36:24,774 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 164 transitions, 364 flow. Second operand has 4 states, 4 states have (on average 158.75) internal successors, (635), 4 states have internal predecessors, (635), 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) [2022-07-19 21:36:24,774 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:36:24,774 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 189 [2022-07-19 21:36:24,775 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:36:24,912 INFO L129 PetriNetUnfolder]: 156/581 cut-off events. [2022-07-19 21:36:24,912 INFO L130 PetriNetUnfolder]: For 79/79 co-relation queries the response was YES. [2022-07-19 21:36:24,914 INFO L84 FinitePrefix]: Finished finitePrefix Result has 966 conditions, 581 events. 156/581 cut-off events. For 79/79 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2610 event pairs, 14 based on Foata normal form. 0/541 useless extension candidates. Maximal degree in co-relation 959. Up to 141 conditions per place. [2022-07-19 21:36:24,918 INFO L132 encePairwiseOnDemand]: 183/189 looper letters, 44 selfloop transitions, 11 changer transitions 0/194 dead transitions. [2022-07-19 21:36:24,918 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 194 transitions, 558 flow [2022-07-19 21:36:24,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 21:36:24,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-19 21:36:24,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 823 transitions. [2022-07-19 21:36:24,921 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.870899470899471 [2022-07-19 21:36:24,921 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 823 transitions. [2022-07-19 21:36:24,921 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 823 transitions. [2022-07-19 21:36:24,923 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:36:24,926 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 823 transitions. [2022-07-19 21:36:24,928 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 164.6) internal successors, (823), 5 states have internal predecessors, (823), 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) [2022-07-19 21:36:24,930 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 189.0) internal successors, (1134), 6 states have internal predecessors, (1134), 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) [2022-07-19 21:36:24,931 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 189.0) internal successors, (1134), 6 states have internal predecessors, (1134), 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) [2022-07-19 21:36:24,932 INFO L186 Difference]: Start difference. First operand has 172 places, 164 transitions, 364 flow. Second operand 5 states and 823 transitions. [2022-07-19 21:36:24,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 194 transitions, 558 flow [2022-07-19 21:36:24,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 194 transitions, 534 flow, removed 2 selfloop flow, removed 6 redundant places. [2022-07-19 21:36:24,939 INFO L242 Difference]: Finished difference. Result has 172 places, 174 transitions, 437 flow [2022-07-19 21:36:24,939 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=348, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=437, PETRI_PLACES=172, PETRI_TRANSITIONS=174} [2022-07-19 21:36:24,941 INFO L279 CegarLoopForPetriNet]: 170 programPoint places, 2 predicate places. [2022-07-19 21:36:24,943 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 174 transitions, 437 flow [2022-07-19 21:36:24,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 158.75) internal successors, (635), 4 states have internal predecessors, (635), 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) [2022-07-19 21:36:24,944 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:36:24,944 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] [2022-07-19 21:36:24,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 21:36:24,944 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:36:24,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:36:24,946 INFO L85 PathProgramCache]: Analyzing trace with hash -2124401224, now seen corresponding path program 2 times [2022-07-19 21:36:24,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:36:24,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228467442] [2022-07-19 21:36:24,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:36:24,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:36:25,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:36:25,122 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-19 21:36:25,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:36:25,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228467442] [2022-07-19 21:36:25,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228467442] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:36:25,123 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:36:25,123 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 21:36:25,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626441840] [2022-07-19 21:36:25,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:36:25,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 21:36:25,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:36:25,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 21:36:25,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 21:36:25,126 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 189 [2022-07-19 21:36:25,127 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 174 transitions, 437 flow. Second operand has 5 states, 5 states have (on average 144.2) internal successors, (721), 5 states have internal predecessors, (721), 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) [2022-07-19 21:36:25,127 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:36:25,127 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 189 [2022-07-19 21:36:25,127 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:36:25,261 INFO L129 PetriNetUnfolder]: 106/528 cut-off events. [2022-07-19 21:36:25,261 INFO L130 PetriNetUnfolder]: For 330/355 co-relation queries the response was YES. [2022-07-19 21:36:25,264 INFO L84 FinitePrefix]: Finished finitePrefix Result has 994 conditions, 528 events. 106/528 cut-off events. For 330/355 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2395 event pairs, 13 based on Foata normal form. 8/515 useless extension candidates. Maximal degree in co-relation 985. Up to 100 conditions per place. [2022-07-19 21:36:25,266 INFO L132 encePairwiseOnDemand]: 184/189 looper letters, 51 selfloop transitions, 2 changer transitions 4/190 dead transitions. [2022-07-19 21:36:25,266 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 190 transitions, 630 flow [2022-07-19 21:36:25,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 21:36:25,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-19 21:36:25,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 734 transitions. [2022-07-19 21:36:25,269 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7767195767195767 [2022-07-19 21:36:25,269 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 734 transitions. [2022-07-19 21:36:25,269 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 734 transitions. [2022-07-19 21:36:25,269 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:36:25,270 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 734 transitions. [2022-07-19 21:36:25,271 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 146.8) internal successors, (734), 5 states have internal predecessors, (734), 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) [2022-07-19 21:36:25,273 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 189.0) internal successors, (1134), 6 states have internal predecessors, (1134), 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) [2022-07-19 21:36:25,273 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 189.0) internal successors, (1134), 6 states have internal predecessors, (1134), 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) [2022-07-19 21:36:25,274 INFO L186 Difference]: Start difference. First operand has 172 places, 174 transitions, 437 flow. Second operand 5 states and 734 transitions. [2022-07-19 21:36:25,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 190 transitions, 630 flow [2022-07-19 21:36:25,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 190 transitions, 630 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-19 21:36:25,281 INFO L242 Difference]: Finished difference. Result has 179 places, 175 transitions, 453 flow [2022-07-19 21:36:25,281 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=437, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=453, PETRI_PLACES=179, PETRI_TRANSITIONS=175} [2022-07-19 21:36:25,283 INFO L279 CegarLoopForPetriNet]: 170 programPoint places, 9 predicate places. [2022-07-19 21:36:25,284 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 175 transitions, 453 flow [2022-07-19 21:36:25,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 144.2) internal successors, (721), 5 states have internal predecessors, (721), 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) [2022-07-19 21:36:25,284 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:36:25,285 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] [2022-07-19 21:36:25,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 21:36:25,285 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:36:25,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:36:25,288 INFO L85 PathProgramCache]: Analyzing trace with hash -8030758, now seen corresponding path program 1 times [2022-07-19 21:36:25,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:36:25,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184509958] [2022-07-19 21:36:25,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:36:25,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:36:25,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:36:25,414 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-19 21:36:25,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:36:25,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184509958] [2022-07-19 21:36:25,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184509958] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:36:25,415 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:36:25,415 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 21:36:25,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522532007] [2022-07-19 21:36:25,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:36:25,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 21:36:25,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:36:25,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 21:36:25,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 21:36:25,418 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 189 [2022-07-19 21:36:25,419 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 175 transitions, 453 flow. Second operand has 3 states, 3 states have (on average 169.0) internal successors, (507), 3 states have internal predecessors, (507), 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) [2022-07-19 21:36:25,419 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:36:25,419 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 189 [2022-07-19 21:36:25,419 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:36:25,513 INFO L129 PetriNetUnfolder]: 78/488 cut-off events. [2022-07-19 21:36:25,513 INFO L130 PetriNetUnfolder]: For 286/308 co-relation queries the response was YES. [2022-07-19 21:36:25,515 INFO L84 FinitePrefix]: Finished finitePrefix Result has 893 conditions, 488 events. 78/488 cut-off events. For 286/308 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1966 event pairs, 9 based on Foata normal form. 11/480 useless extension candidates. Maximal degree in co-relation 880. Up to 106 conditions per place. [2022-07-19 21:36:25,517 INFO L132 encePairwiseOnDemand]: 186/189 looper letters, 29 selfloop transitions, 2 changer transitions 2/185 dead transitions. [2022-07-19 21:36:25,517 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 185 transitions, 570 flow [2022-07-19 21:36:25,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 21:36:25,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-19 21:36:25,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 515 transitions. [2022-07-19 21:36:25,519 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.908289241622575 [2022-07-19 21:36:25,520 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 515 transitions. [2022-07-19 21:36:25,520 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 515 transitions. [2022-07-19 21:36:25,520 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:36:25,520 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 515 transitions. [2022-07-19 21:36:25,522 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 171.66666666666666) internal successors, (515), 3 states have internal predecessors, (515), 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) [2022-07-19 21:36:25,523 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 189.0) internal successors, (756), 4 states have internal predecessors, (756), 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) [2022-07-19 21:36:25,523 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 189.0) internal successors, (756), 4 states have internal predecessors, (756), 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) [2022-07-19 21:36:25,524 INFO L186 Difference]: Start difference. First operand has 179 places, 175 transitions, 453 flow. Second operand 3 states and 515 transitions. [2022-07-19 21:36:25,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 185 transitions, 570 flow [2022-07-19 21:36:25,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 185 transitions, 564 flow, removed 2 selfloop flow, removed 3 redundant places. [2022-07-19 21:36:25,529 INFO L242 Difference]: Finished difference. Result has 177 places, 176 transitions, 463 flow [2022-07-19 21:36:25,529 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=447, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=463, PETRI_PLACES=177, PETRI_TRANSITIONS=176} [2022-07-19 21:36:25,530 INFO L279 CegarLoopForPetriNet]: 170 programPoint places, 7 predicate places. [2022-07-19 21:36:25,530 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 176 transitions, 463 flow [2022-07-19 21:36:25,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 169.0) internal successors, (507), 3 states have internal predecessors, (507), 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) [2022-07-19 21:36:25,531 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:36:25,531 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] [2022-07-19 21:36:25,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-19 21:36:25,532 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:36:25,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:36:25,532 INFO L85 PathProgramCache]: Analyzing trace with hash -1086060663, now seen corresponding path program 1 times [2022-07-19 21:36:25,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:36:25,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759069478] [2022-07-19 21:36:25,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:36:25,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:36:25,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:36:25,607 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-19 21:36:25,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:36:25,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759069478] [2022-07-19 21:36:25,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759069478] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:36:25,608 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:36:25,608 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 21:36:25,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683375488] [2022-07-19 21:36:25,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:36:25,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 21:36:25,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:36:25,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 21:36:25,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 21:36:25,615 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 189 [2022-07-19 21:36:25,616 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 176 transitions, 463 flow. Second operand has 6 states, 6 states have (on average 149.83333333333334) internal successors, (899), 6 states have internal predecessors, (899), 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) [2022-07-19 21:36:25,616 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:36:25,616 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 189 [2022-07-19 21:36:25,617 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:36:25,778 INFO L129 PetriNetUnfolder]: 77/620 cut-off events. [2022-07-19 21:36:25,778 INFO L130 PetriNetUnfolder]: For 367/396 co-relation queries the response was YES. [2022-07-19 21:36:25,780 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1137 conditions, 620 events. 77/620 cut-off events. For 367/396 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 2606 event pairs, 16 based on Foata normal form. 15/608 useless extension candidates. Maximal degree in co-relation 1125. Up to 110 conditions per place. [2022-07-19 21:36:25,782 INFO L132 encePairwiseOnDemand]: 179/189 looper letters, 38 selfloop transitions, 8 changer transitions 22/202 dead transitions. [2022-07-19 21:36:25,783 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 202 transitions, 685 flow [2022-07-19 21:36:25,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 21:36:25,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-19 21:36:25,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1361 transitions. [2022-07-19 21:36:25,787 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8001175778953556 [2022-07-19 21:36:25,787 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1361 transitions. [2022-07-19 21:36:25,787 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1361 transitions. [2022-07-19 21:36:25,788 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:36:25,788 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1361 transitions. [2022-07-19 21:36:25,791 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 151.22222222222223) internal successors, (1361), 9 states have internal predecessors, (1361), 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) [2022-07-19 21:36:25,794 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 189.0) internal successors, (1890), 10 states have internal predecessors, (1890), 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) [2022-07-19 21:36:25,795 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 189.0) internal successors, (1890), 10 states have internal predecessors, (1890), 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) [2022-07-19 21:36:25,795 INFO L186 Difference]: Start difference. First operand has 177 places, 176 transitions, 463 flow. Second operand 9 states and 1361 transitions. [2022-07-19 21:36:25,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 202 transitions, 685 flow [2022-07-19 21:36:25,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 202 transitions, 683 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-19 21:36:25,800 INFO L242 Difference]: Finished difference. Result has 186 places, 177 transitions, 489 flow [2022-07-19 21:36:25,800 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=461, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=489, PETRI_PLACES=186, PETRI_TRANSITIONS=177} [2022-07-19 21:36:25,801 INFO L279 CegarLoopForPetriNet]: 170 programPoint places, 16 predicate places. [2022-07-19 21:36:25,801 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 177 transitions, 489 flow [2022-07-19 21:36:25,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 149.83333333333334) internal successors, (899), 6 states have internal predecessors, (899), 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) [2022-07-19 21:36:25,802 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:36:25,802 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] [2022-07-19 21:36:25,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-19 21:36:25,802 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:36:25,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:36:25,803 INFO L85 PathProgramCache]: Analyzing trace with hash -751624308, now seen corresponding path program 1 times [2022-07-19 21:36:25,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:36:25,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128998679] [2022-07-19 21:36:25,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:36:25,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:36:25,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:36:27,534 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:36:27,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:36:27,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128998679] [2022-07-19 21:36:27,534 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128998679] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:36:27,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1180799496] [2022-07-19 21:36:27,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:36:27,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:36:27,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:36:27,537 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) [2022-07-19 21:36:27,568 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-19 21:36:27,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:36:27,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 42 conjunts are in the unsatisfiable core [2022-07-19 21:36:27,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:36:29,357 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-07-19 21:36:29,378 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-19 21:36:29,378 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 21:36:29,886 INFO L356 Elim1Store]: treesize reduction 23, result has 58.2 percent of original size [2022-07-19 21:36:29,886 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 49 [2022-07-19 21:36:31,347 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-19 21:36:31,347 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1180799496] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 21:36:31,347 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 21:36:31,348 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 24, 19] total 63 [2022-07-19 21:36:31,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631383119] [2022-07-19 21:36:31,348 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 21:36:31,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2022-07-19 21:36:31,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:36:31,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2022-07-19 21:36:31,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=545, Invalid=3361, Unknown=0, NotChecked=0, Total=3906 [2022-07-19 21:36:31,355 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 189 [2022-07-19 21:36:31,359 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 177 transitions, 489 flow. Second operand has 63 states, 63 states have (on average 59.476190476190474) internal successors, (3747), 63 states have internal predecessors, (3747), 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) [2022-07-19 21:36:31,359 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:36:31,359 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 189 [2022-07-19 21:36:31,359 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:36:45,669 INFO L129 PetriNetUnfolder]: 9164/17955 cut-off events. [2022-07-19 21:36:45,669 INFO L130 PetriNetUnfolder]: For 11386/11386 co-relation queries the response was YES. [2022-07-19 21:36:45,739 INFO L84 FinitePrefix]: Finished finitePrefix Result has 45147 conditions, 17955 events. 9164/17955 cut-off events. For 11386/11386 co-relation queries the response was YES. Maximal size of possible extension queue 861. Compared 165866 event pairs, 721 based on Foata normal form. 32/17327 useless extension candidates. Maximal degree in co-relation 45133. Up to 2845 conditions per place. [2022-07-19 21:36:45,815 INFO L132 encePairwiseOnDemand]: 142/189 looper letters, 825 selfloop transitions, 284 changer transitions 218/1376 dead transitions. [2022-07-19 21:36:45,815 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 1376 transitions, 7649 flow [2022-07-19 21:36:45,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2022-07-19 21:36:45,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2022-07-19 21:36:45,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 8023 transitions. [2022-07-19 21:36:45,835 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.3395978835978836 [2022-07-19 21:36:45,835 INFO L72 ComplementDD]: Start complementDD. Operand 125 states and 8023 transitions. [2022-07-19 21:36:45,835 INFO L73 IsDeterministic]: Start isDeterministic. Operand 125 states and 8023 transitions. [2022-07-19 21:36:45,841 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:36:45,842 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 125 states and 8023 transitions. [2022-07-19 21:36:45,863 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 126 states, 125 states have (on average 64.184) internal successors, (8023), 125 states have internal predecessors, (8023), 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) [2022-07-19 21:36:45,898 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 126 states, 126 states have (on average 189.0) internal successors, (23814), 126 states have internal predecessors, (23814), 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) [2022-07-19 21:36:45,909 INFO L81 ComplementDD]: Finished complementDD. Result has 126 states, 126 states have (on average 189.0) internal successors, (23814), 126 states have internal predecessors, (23814), 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) [2022-07-19 21:36:45,909 INFO L186 Difference]: Start difference. First operand has 186 places, 177 transitions, 489 flow. Second operand 125 states and 8023 transitions. [2022-07-19 21:36:45,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 1376 transitions, 7649 flow [2022-07-19 21:36:45,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 1376 transitions, 7615 flow, removed 7 selfloop flow, removed 6 redundant places. [2022-07-19 21:36:45,960 INFO L242 Difference]: Finished difference. Result has 371 places, 492 transitions, 3069 flow [2022-07-19 21:36:45,961 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=471, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=125, PETRI_FLOW=3069, PETRI_PLACES=371, PETRI_TRANSITIONS=492} [2022-07-19 21:36:45,963 INFO L279 CegarLoopForPetriNet]: 170 programPoint places, 201 predicate places. [2022-07-19 21:36:45,963 INFO L495 AbstractCegarLoop]: Abstraction has has 371 places, 492 transitions, 3069 flow [2022-07-19 21:36:45,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 59.476190476190474) internal successors, (3747), 63 states have internal predecessors, (3747), 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) [2022-07-19 21:36:45,977 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:36:45,977 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] [2022-07-19 21:36:46,002 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-19 21:36:46,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:36:46,202 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:36:46,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:36:46,202 INFO L85 PathProgramCache]: Analyzing trace with hash 1738378008, now seen corresponding path program 2 times [2022-07-19 21:36:46,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:36:46,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753781127] [2022-07-19 21:36:46,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:36:46,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:36:46,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:36:47,615 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-19 21:36:47,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:36:47,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753781127] [2022-07-19 21:36:47,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753781127] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:36:47,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1096687672] [2022-07-19 21:36:47,616 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-19 21:36:47,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:36:47,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:36:47,620 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) [2022-07-19 21:36:47,624 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-19 21:36:47,802 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-19 21:36:47,803 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 21:36:47,806 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 69 conjunts are in the unsatisfiable core [2022-07-19 21:36:47,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:36:47,891 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 [2022-07-19 21:36:48,390 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-19 21:36:48,393 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 14 [2022-07-19 21:36:49,353 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-19 21:36:49,354 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-07-19 21:36:50,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 21:36:50,065 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-07-19 21:36:50,305 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 14 treesize of output 16 [2022-07-19 21:36:50,607 INFO L356 Elim1Store]: treesize reduction 14, result has 65.9 percent of original size [2022-07-19 21:36:50,608 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 36 [2022-07-19 21:36:51,082 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-19 21:36:51,082 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 21:36:52,668 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 21:36:52,669 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 938 treesize of output 894 [2022-07-19 21:36:52,705 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 21:36:52,706 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 794 treesize of output 740 [2022-07-19 21:36:52,740 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 21:36:52,740 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 692 treesize of output 536 [2022-07-19 21:37:01,669 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-07-19 21:37:01,673 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-07-19 21:37:01,746 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-19 21:37:01,746 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1096687672] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 21:37:01,746 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 21:37:01,746 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 36, 33] total 90 [2022-07-19 21:37:01,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551991720] [2022-07-19 21:37:01,746 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 21:37:01,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 90 states [2022-07-19 21:37:01,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:37:01,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2022-07-19 21:37:01,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=778, Invalid=7213, Unknown=19, NotChecked=0, Total=8010 [2022-07-19 21:37:01,753 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 189 [2022-07-19 21:37:01,757 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 371 places, 492 transitions, 3069 flow. Second operand has 90 states, 90 states have (on average 56.422222222222224) internal successors, (5078), 90 states have internal predecessors, (5078), 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) [2022-07-19 21:37:01,757 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:37:01,757 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 189 [2022-07-19 21:37:01,758 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:37:24,859 INFO L129 PetriNetUnfolder]: 15769/29092 cut-off events. [2022-07-19 21:37:24,860 INFO L130 PetriNetUnfolder]: For 270536/270612 co-relation queries the response was YES. [2022-07-19 21:37:25,288 INFO L84 FinitePrefix]: Finished finitePrefix Result has 135047 conditions, 29092 events. 15769/29092 cut-off events. For 270536/270612 co-relation queries the response was YES. Maximal size of possible extension queue 1391. Compared 273659 event pairs, 2268 based on Foata normal form. 26/29056 useless extension candidates. Maximal degree in co-relation 134965. Up to 14170 conditions per place. [2022-07-19 21:37:25,429 INFO L132 encePairwiseOnDemand]: 131/189 looper letters, 1093 selfloop transitions, 536 changer transitions 46/1722 dead transitions. [2022-07-19 21:37:25,429 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 490 places, 1722 transitions, 15830 flow [2022-07-19 21:37:25,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 140 states. [2022-07-19 21:37:25,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2022-07-19 21:37:25,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 8165 transitions. [2022-07-19 21:37:25,443 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.3085789871504157 [2022-07-19 21:37:25,443 INFO L72 ComplementDD]: Start complementDD. Operand 140 states and 8165 transitions. [2022-07-19 21:37:25,444 INFO L73 IsDeterministic]: Start isDeterministic. Operand 140 states and 8165 transitions. [2022-07-19 21:37:25,447 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:37:25,448 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 140 states and 8165 transitions. [2022-07-19 21:37:25,461 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 141 states, 140 states have (on average 58.32142857142857) internal successors, (8165), 140 states have internal predecessors, (8165), 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) [2022-07-19 21:37:25,491 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 141 states, 141 states have (on average 189.0) internal successors, (26649), 141 states have internal predecessors, (26649), 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) [2022-07-19 21:37:25,502 INFO L81 ComplementDD]: Finished complementDD. Result has 141 states, 141 states have (on average 189.0) internal successors, (26649), 141 states have internal predecessors, (26649), 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) [2022-07-19 21:37:25,503 INFO L186 Difference]: Start difference. First operand has 371 places, 492 transitions, 3069 flow. Second operand 140 states and 8165 transitions. [2022-07-19 21:37:25,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 490 places, 1722 transitions, 15830 flow [2022-07-19 21:37:26,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 460 places, 1722 transitions, 14586 flow, removed 585 selfloop flow, removed 30 redundant places. [2022-07-19 21:37:27,011 INFO L242 Difference]: Finished difference. Result has 522 places, 998 transitions, 8572 flow [2022-07-19 21:37:27,012 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=2726, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=492, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=140, PETRI_FLOW=8572, PETRI_PLACES=522, PETRI_TRANSITIONS=998} [2022-07-19 21:37:27,013 INFO L279 CegarLoopForPetriNet]: 170 programPoint places, 352 predicate places. [2022-07-19 21:37:27,013 INFO L495 AbstractCegarLoop]: Abstraction has has 522 places, 998 transitions, 8572 flow [2022-07-19 21:37:27,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 90 states, 90 states have (on average 56.422222222222224) internal successors, (5078), 90 states have internal predecessors, (5078), 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) [2022-07-19 21:37:27,015 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:37:27,015 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] [2022-07-19 21:37:27,040 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-19 21:37:27,231 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,SelfDestructingSolverStorable8 [2022-07-19 21:37:27,232 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:37:27,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:37:27,232 INFO L85 PathProgramCache]: Analyzing trace with hash -1611746612, now seen corresponding path program 3 times [2022-07-19 21:37:27,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:37:27,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235478635] [2022-07-19 21:37:27,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:37:27,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:37:27,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:37:28,308 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-19 21:37:28,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:37:28,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235478635] [2022-07-19 21:37:28,309 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235478635] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:37:28,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1298524095] [2022-07-19 21:37:28,309 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-19 21:37:28,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:37:28,310 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:37:28,311 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) [2022-07-19 21:37:28,311 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-19 21:37:28,429 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-07-19 21:37:28,429 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 21:37:28,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 74 conjunts are in the unsatisfiable core [2022-07-19 21:37:28,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:37:28,442 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 [2022-07-19 21:37:28,471 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-19 21:37:28,471 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 14 [2022-07-19 21:37:28,858 INFO L356 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2022-07-19 21:37:28,858 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 22 treesize of output 33 [2022-07-19 21:37:29,107 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 [2022-07-19 21:37:29,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 21:37:29,810 INFO L356 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2022-07-19 21:37:29,810 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 21 [2022-07-19 21:37:29,971 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 [2022-07-19 21:37:31,161 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 [2022-07-19 21:37:31,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 21:37:31,660 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-07-19 21:37:32,167 INFO L356 Elim1Store]: treesize reduction 54, result has 5.3 percent of original size [2022-07-19 21:37:32,167 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 13 [2022-07-19 21:37:32,246 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-19 21:37:32,246 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 21:37:55,331 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 21:37:55,332 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 128 treesize of output 92 [2022-07-19 21:37:55,393 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 21:37:55,394 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 4204 treesize of output 3906 [2022-07-19 21:37:55,484 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 21:37:55,485 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 3852 treesize of output 3636 [2022-07-19 21:37:55,523 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 21:37:55,524 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 3588 treesize of output 2772 [2022-07-19 21:37:55,565 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 21:37:55,565 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 2724 treesize of output 2244