./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/popl20-more-array-sum.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-more-array-sum.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 c328ca6a6071aea6db12d1e311bd2e5e22fce6c700c884e61df52925e139f834 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 22:13:16,865 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 22:13:16,867 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 22:13:16,906 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 22:13:16,906 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 22:13:16,907 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 22:13:16,909 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 22:13:16,910 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 22:13:16,912 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 22:13:16,927 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 22:13:16,928 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 22:13:16,930 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 22:13:16,930 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 22:13:16,932 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 22:13:16,933 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 22:13:16,939 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 22:13:16,940 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 22:13:16,941 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 22:13:16,942 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 22:13:16,947 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 22:13:16,948 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 22:13:16,949 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 22:13:16,949 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 22:13:16,950 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 22:13:16,951 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 22:13:16,953 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 22:13:16,953 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 22:13:16,953 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 22:13:16,954 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 22:13:16,954 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 22:13:16,955 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 22:13:16,955 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 22:13:16,956 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 22:13:16,957 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 22:13:16,957 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 22:13:16,958 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 22:13:16,958 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 22:13:16,958 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 22:13:16,959 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 22:13:16,959 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 22:13:16,959 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 22:13:16,960 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 22:13:16,961 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 22:13:16,983 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 22:13:16,984 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 22:13:16,984 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 22:13:16,984 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 22:13:16,984 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 22:13:16,985 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 22:13:16,985 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 22:13:16,985 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 22:13:16,985 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 22:13:16,986 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 22:13:16,986 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 22:13:16,986 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 22:13:16,986 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 22:13:16,987 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 22:13:16,987 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 22:13:16,987 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 22:13:16,987 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 22:13:16,987 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 22:13:16,987 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 22:13:16,988 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 22:13:16,988 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 22:13:16,988 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 22:13:16,988 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 22:13:16,988 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 22:13:16,988 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 22:13:16,988 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 22:13:16,989 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 22:13:16,989 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 22:13:16,989 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 22:13:16,989 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 22:13:16,989 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 22:13:16,989 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 22:13:16,989 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 22:13:16,990 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c328ca6a6071aea6db12d1e311bd2e5e22fce6c700c884e61df52925e139f834 [2022-07-13 22:13:17,181 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 22:13:17,197 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 22:13:17,199 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 22:13:17,200 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 22:13:17,201 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 22:13:17,202 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-more-array-sum.wvr.c [2022-07-13 22:13:17,265 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dad51f85d/bb4a01db9ea147d89c945554379dc2ee/FLAG0fc56506e [2022-07-13 22:13:17,613 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 22:13:17,614 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-array-sum.wvr.c [2022-07-13 22:13:17,619 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dad51f85d/bb4a01db9ea147d89c945554379dc2ee/FLAG0fc56506e [2022-07-13 22:13:17,631 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dad51f85d/bb4a01db9ea147d89c945554379dc2ee [2022-07-13 22:13:17,633 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 22:13:17,634 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 22:13:17,636 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 22:13:17,636 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 22:13:17,638 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 22:13:17,638 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 10:13:17" (1/1) ... [2022-07-13 22:13:17,639 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d3b67c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:13:17, skipping insertion in model container [2022-07-13 22:13:17,639 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 10:13:17" (1/1) ... [2022-07-13 22:13:17,643 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 22:13:17,659 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 22:13:17,794 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-array-sum.wvr.c[2835,2848] [2022-07-13 22:13:17,812 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 22:13:17,820 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 22:13:17,852 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-array-sum.wvr.c[2835,2848] [2022-07-13 22:13:17,860 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 22:13:17,871 INFO L208 MainTranslator]: Completed translation [2022-07-13 22:13:17,872 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:13:17 WrapperNode [2022-07-13 22:13:17,872 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 22:13:17,873 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 22:13:17,873 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 22:13:17,873 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 22:13:17,878 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:13:17" (1/1) ... [2022-07-13 22:13:17,899 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:13:17" (1/1) ... [2022-07-13 22:13:17,934 INFO L137 Inliner]: procedures = 25, calls = 58, calls flagged for inlining = 16, calls inlined = 28, statements flattened = 280 [2022-07-13 22:13:17,935 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 22:13:17,936 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 22:13:17,936 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 22:13:17,936 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 22:13:17,942 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:13:17" (1/1) ... [2022-07-13 22:13:17,942 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:13:17" (1/1) ... [2022-07-13 22:13:17,945 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:13:17" (1/1) ... [2022-07-13 22:13:17,945 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:13:17" (1/1) ... [2022-07-13 22:13:17,951 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:13:17" (1/1) ... [2022-07-13 22:13:17,955 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:13:17" (1/1) ... [2022-07-13 22:13:17,956 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:13:17" (1/1) ... [2022-07-13 22:13:17,958 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 22:13:17,959 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 22:13:17,962 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 22:13:17,962 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 22:13:17,978 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:13:17" (1/1) ... [2022-07-13 22:13:17,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 22:13:17,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:13:18,000 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-13 22:13:18,008 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-13 22:13:18,029 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 22:13:18,036 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-13 22:13:18,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-13 22:13:18,036 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-13 22:13:18,036 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-13 22:13:18,036 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-13 22:13:18,036 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-13 22:13:18,036 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-13 22:13:18,037 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-07-13 22:13:18,037 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-07-13 22:13:18,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 22:13:18,037 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-07-13 22:13:18,037 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-07-13 22:13:18,037 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-13 22:13:18,037 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 22:13:18,038 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 22:13:18,038 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-13 22:13:18,039 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-13 22:13:18,171 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 22:13:18,172 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 22:13:18,503 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 22:13:18,632 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 22:13:18,632 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2022-07-13 22:13:18,634 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 10:13:18 BoogieIcfgContainer [2022-07-13 22:13:18,634 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 22:13:18,635 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 22:13:18,635 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 22:13:18,649 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 22:13:18,649 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 10:13:17" (1/3) ... [2022-07-13 22:13:18,650 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@267d80c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 10:13:18, skipping insertion in model container [2022-07-13 22:13:18,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:13:17" (2/3) ... [2022-07-13 22:13:18,650 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@267d80c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 10:13:18, skipping insertion in model container [2022-07-13 22:13:18,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 10:13:18" (3/3) ... [2022-07-13 22:13:18,651 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-more-array-sum.wvr.c [2022-07-13 22:13:18,655 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-13 22:13:18,661 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 22:13:18,661 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 22:13:18,661 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-13 22:13:18,776 INFO L135 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-07-13 22:13:18,815 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 190 places, 196 transitions, 416 flow [2022-07-13 22:13:18,881 INFO L129 PetriNetUnfolder]: 16/193 cut-off events. [2022-07-13 22:13:18,881 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-13 22:13:18,884 INFO L84 FinitePrefix]: Finished finitePrefix Result has 206 conditions, 193 events. 16/193 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 110 event pairs, 0 based on Foata normal form. 0/176 useless extension candidates. Maximal degree in co-relation 154. Up to 2 conditions per place. [2022-07-13 22:13:18,884 INFO L82 GeneralOperation]: Start removeDead. Operand has 190 places, 196 transitions, 416 flow [2022-07-13 22:13:18,891 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 176 places, 182 transitions, 382 flow [2022-07-13 22:13:18,904 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 22:13:18,910 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@c2b8eb9, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@67e07182 [2022-07-13 22:13:18,910 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-07-13 22:13:18,938 INFO L129 PetriNetUnfolder]: 16/181 cut-off events. [2022-07-13 22:13:18,938 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-13 22:13:18,939 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:13:18,939 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] [2022-07-13 22:13:18,940 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:13:18,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:13:18,944 INFO L85 PathProgramCache]: Analyzing trace with hash 258256848, now seen corresponding path program 1 times [2022-07-13 22:13:18,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:13:18,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311503874] [2022-07-13 22:13:18,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:13:18,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:13:19,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:13:19,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:13:19,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:13:19,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311503874] [2022-07-13 22:13:19,152 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311503874] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:13:19,152 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:13:19,152 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 22:13:19,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499652330] [2022-07-13 22:13:19,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:13:19,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-13 22:13:19,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:13:19,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-13 22:13:19,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-13 22:13:19,180 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 196 [2022-07-13 22:13:19,182 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 182 transitions, 382 flow. Second operand has 2 states, 2 states have (on average 179.0) internal successors, (358), 2 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:13:19,182 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:13:19,182 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 196 [2022-07-13 22:13:19,183 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:13:19,254 INFO L129 PetriNetUnfolder]: 42/316 cut-off events. [2022-07-13 22:13:19,254 INFO L130 PetriNetUnfolder]: For 50/51 co-relation queries the response was YES. [2022-07-13 22:13:19,255 INFO L84 FinitePrefix]: Finished finitePrefix Result has 407 conditions, 316 events. 42/316 cut-off events. For 50/51 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 804 event pairs, 15 based on Foata normal form. 42/325 useless extension candidates. Maximal degree in co-relation 229. Up to 59 conditions per place. [2022-07-13 22:13:19,257 INFO L132 encePairwiseOnDemand]: 185/196 looper letters, 9 selfloop transitions, 0 changer transitions 6/171 dead transitions. [2022-07-13 22:13:19,257 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 171 transitions, 378 flow [2022-07-13 22:13:19,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-13 22:13:19,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-07-13 22:13:19,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 370 transitions. [2022-07-13 22:13:19,266 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9438775510204082 [2022-07-13 22:13:19,266 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 370 transitions. [2022-07-13 22:13:19,266 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 370 transitions. [2022-07-13 22:13:19,268 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:13:19,269 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 370 transitions. [2022-07-13 22:13:19,272 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 185.0) internal successors, (370), 2 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:13:19,275 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 196.0) internal successors, (588), 3 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:13:19,275 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 196.0) internal successors, (588), 3 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:13:19,276 INFO L186 Difference]: Start difference. First operand has 176 places, 182 transitions, 382 flow. Second operand 2 states and 370 transitions. [2022-07-13 22:13:19,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 171 transitions, 378 flow [2022-07-13 22:13:19,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 171 transitions, 366 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-07-13 22:13:19,283 INFO L242 Difference]: Finished difference. Result has 171 places, 165 transitions, 336 flow [2022-07-13 22:13:19,285 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=348, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=336, PETRI_PLACES=171, PETRI_TRANSITIONS=165} [2022-07-13 22:13:19,287 INFO L279 CegarLoopForPetriNet]: 176 programPoint places, -5 predicate places. [2022-07-13 22:13:19,287 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 165 transitions, 336 flow [2022-07-13 22:13:19,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 179.0) internal successors, (358), 2 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:13:19,287 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:13:19,288 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] [2022-07-13 22:13:19,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 22:13:19,288 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:13:19,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:13:19,288 INFO L85 PathProgramCache]: Analyzing trace with hash -2054653840, now seen corresponding path program 1 times [2022-07-13 22:13:19,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:13:19,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669591886] [2022-07-13 22:13:19,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:13:19,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:13:19,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:13:19,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:13:19,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:13:19,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669591886] [2022-07-13 22:13:19,614 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669591886] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:13:19,614 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:13:19,614 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 22:13:19,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642653296] [2022-07-13 22:13:19,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:13:19,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 22:13:19,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:13:19,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 22:13:19,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2022-07-13 22:13:19,618 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 196 [2022-07-13 22:13:19,619 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 165 transitions, 336 flow. Second operand has 8 states, 8 states have (on average 120.25) internal successors, (962), 8 states have internal predecessors, (962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:13:19,619 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:13:19,619 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 196 [2022-07-13 22:13:19,619 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:13:19,878 INFO L129 PetriNetUnfolder]: 298/789 cut-off events. [2022-07-13 22:13:19,879 INFO L130 PetriNetUnfolder]: For 26/26 co-relation queries the response was YES. [2022-07-13 22:13:19,882 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1289 conditions, 789 events. 298/789 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 3371 event pairs, 167 based on Foata normal form. 1/609 useless extension candidates. Maximal degree in co-relation 1286. Up to 438 conditions per place. [2022-07-13 22:13:19,886 INFO L132 encePairwiseOnDemand]: 181/196 looper letters, 62 selfloop transitions, 10 changer transitions 23/196 dead transitions. [2022-07-13 22:13:19,886 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 196 transitions, 588 flow [2022-07-13 22:13:19,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-13 22:13:19,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-07-13 22:13:19,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1008 transitions. [2022-07-13 22:13:19,891 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6428571428571429 [2022-07-13 22:13:19,891 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1008 transitions. [2022-07-13 22:13:19,891 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1008 transitions. [2022-07-13 22:13:19,891 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:13:19,891 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1008 transitions. [2022-07-13 22:13:19,894 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 126.0) internal successors, (1008), 8 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:13:19,898 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 196.0) internal successors, (1764), 9 states have internal predecessors, (1764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:13:19,899 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 196.0) internal successors, (1764), 9 states have internal predecessors, (1764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:13:19,899 INFO L186 Difference]: Start difference. First operand has 171 places, 165 transitions, 336 flow. Second operand 8 states and 1008 transitions. [2022-07-13 22:13:19,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 196 transitions, 588 flow [2022-07-13 22:13:19,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 196 transitions, 588 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-13 22:13:19,906 INFO L242 Difference]: Finished difference. Result has 176 places, 167 transitions, 380 flow [2022-07-13 22:13:19,907 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=380, PETRI_PLACES=176, PETRI_TRANSITIONS=167} [2022-07-13 22:13:19,907 INFO L279 CegarLoopForPetriNet]: 176 programPoint places, 0 predicate places. [2022-07-13 22:13:19,907 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 167 transitions, 380 flow [2022-07-13 22:13:19,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 120.25) internal successors, (962), 8 states have internal predecessors, (962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:13:19,908 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:13:19,908 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] [2022-07-13 22:13:19,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 22:13:19,909 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:13:19,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:13:19,909 INFO L85 PathProgramCache]: Analyzing trace with hash 2135143954, now seen corresponding path program 1 times [2022-07-13 22:13:19,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:13:19,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728659308] [2022-07-13 22:13:19,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:13:19,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:13:19,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:13:20,043 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-13 22:13:20,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:13:20,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728659308] [2022-07-13 22:13:20,044 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728659308] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:13:20,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1654992037] [2022-07-13 22:13:20,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:13:20,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:13:20,045 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:13:20,048 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:13:20,049 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-13 22:13:20,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:13:20,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-13 22:13:20,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:13:20,344 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-13 22:13:20,344 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 22:13:20,531 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-13 22:13:20,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1654992037] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-13 22:13:20,531 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-13 22:13:20,532 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 7] total 14 [2022-07-13 22:13:20,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793054530] [2022-07-13 22:13:20,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:13:20,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 22:13:20,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:13:20,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 22:13:20,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2022-07-13 22:13:20,535 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 196 [2022-07-13 22:13:20,536 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 167 transitions, 380 flow. Second operand has 7 states, 7 states have (on average 146.14285714285714) internal successors, (1023), 7 states have internal predecessors, (1023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:13:20,536 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:13:20,536 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 196 [2022-07-13 22:13:20,536 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:13:20,678 INFO L129 PetriNetUnfolder]: 182/683 cut-off events. [2022-07-13 22:13:20,678 INFO L130 PetriNetUnfolder]: For 31/31 co-relation queries the response was YES. [2022-07-13 22:13:20,680 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1030 conditions, 683 events. 182/683 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 3308 event pairs, 80 based on Foata normal form. 0/600 useless extension candidates. Maximal degree in co-relation 1022. Up to 147 conditions per place. [2022-07-13 22:13:20,681 INFO L132 encePairwiseOnDemand]: 188/196 looper letters, 46 selfloop transitions, 7 changer transitions 0/175 dead transitions. [2022-07-13 22:13:20,682 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 175 transitions, 504 flow [2022-07-13 22:13:20,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 22:13:20,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-13 22:13:20,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1039 transitions. [2022-07-13 22:13:20,684 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7572886297376094 [2022-07-13 22:13:20,684 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1039 transitions. [2022-07-13 22:13:20,684 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1039 transitions. [2022-07-13 22:13:20,684 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:13:20,685 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1039 transitions. [2022-07-13 22:13:20,687 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 148.42857142857142) internal successors, (1039), 7 states have internal predecessors, (1039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:13:20,688 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 196.0) internal successors, (1568), 8 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:13:20,689 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 196.0) internal successors, (1568), 8 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:13:20,689 INFO L186 Difference]: Start difference. First operand has 176 places, 167 transitions, 380 flow. Second operand 7 states and 1039 transitions. [2022-07-13 22:13:20,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 175 transitions, 504 flow [2022-07-13 22:13:20,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 175 transitions, 480 flow, removed 3 selfloop flow, removed 7 redundant places. [2022-07-13 22:13:20,693 INFO L242 Difference]: Finished difference. Result has 176 places, 169 transitions, 389 flow [2022-07-13 22:13:20,694 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=389, PETRI_PLACES=176, PETRI_TRANSITIONS=169} [2022-07-13 22:13:20,695 INFO L279 CegarLoopForPetriNet]: 176 programPoint places, 0 predicate places. [2022-07-13 22:13:20,695 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 169 transitions, 389 flow [2022-07-13 22:13:20,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 146.14285714285714) internal successors, (1023), 7 states have internal predecessors, (1023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:13:20,696 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:13:20,697 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] [2022-07-13 22:13:20,716 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-13 22:13:20,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:13:20,908 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:13:20,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:13:20,908 INFO L85 PathProgramCache]: Analyzing trace with hash -875219082, now seen corresponding path program 1 times [2022-07-13 22:13:20,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:13:20,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504254842] [2022-07-13 22:13:20,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:13:20,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:13:20,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:13:20,999 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-13 22:13:21,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:13:21,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504254842] [2022-07-13 22:13:21,000 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504254842] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:13:21,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1900827819] [2022-07-13 22:13:21,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:13:21,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:13:21,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:13:21,001 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:13:21,002 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-13 22:13:21,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:13:21,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-13 22:13:21,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:13:21,315 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-13 22:13:21,315 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 22:13:21,500 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-13 22:13:21,501 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1900827819] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-13 22:13:21,501 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-13 22:13:21,501 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10, 9] total 18 [2022-07-13 22:13:21,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261389820] [2022-07-13 22:13:21,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:13:21,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 22:13:21,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:13:21,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 22:13:21,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2022-07-13 22:13:21,504 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 196 [2022-07-13 22:13:21,505 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 169 transitions, 389 flow. Second operand has 9 states, 9 states have (on average 138.66666666666666) internal successors, (1248), 9 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:13:21,505 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:13:21,505 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 196 [2022-07-13 22:13:21,505 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:13:21,825 INFO L129 PetriNetUnfolder]: 875/1783 cut-off events. [2022-07-13 22:13:21,826 INFO L130 PetriNetUnfolder]: For 648/905 co-relation queries the response was YES. [2022-07-13 22:13:21,829 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3540 conditions, 1783 events. 875/1783 cut-off events. For 648/905 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 10354 event pairs, 253 based on Foata normal form. 257/1864 useless extension candidates. Maximal degree in co-relation 3532. Up to 445 conditions per place. [2022-07-13 22:13:21,836 INFO L132 encePairwiseOnDemand]: 185/196 looper letters, 97 selfloop transitions, 17 changer transitions 0/229 dead transitions. [2022-07-13 22:13:21,836 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 229 transitions, 788 flow [2022-07-13 22:13:21,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-13 22:13:21,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-07-13 22:13:21,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1581 transitions. [2022-07-13 22:13:21,839 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7333024118738405 [2022-07-13 22:13:21,839 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1581 transitions. [2022-07-13 22:13:21,839 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1581 transitions. [2022-07-13 22:13:21,839 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:13:21,840 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1581 transitions. [2022-07-13 22:13:21,842 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 143.72727272727272) internal successors, (1581), 11 states have internal predecessors, (1581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:13:21,844 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 196.0) internal successors, (2352), 12 states have internal predecessors, (2352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:13:21,845 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 196.0) internal successors, (2352), 12 states have internal predecessors, (2352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:13:21,845 INFO L186 Difference]: Start difference. First operand has 176 places, 169 transitions, 389 flow. Second operand 11 states and 1581 transitions. [2022-07-13 22:13:21,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 229 transitions, 788 flow [2022-07-13 22:13:21,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 229 transitions, 775 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-07-13 22:13:21,849 INFO L242 Difference]: Finished difference. Result has 186 places, 180 transitions, 469 flow [2022-07-13 22:13:21,849 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=381, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=469, PETRI_PLACES=186, PETRI_TRANSITIONS=180} [2022-07-13 22:13:21,849 INFO L279 CegarLoopForPetriNet]: 176 programPoint places, 10 predicate places. [2022-07-13 22:13:21,850 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 180 transitions, 469 flow [2022-07-13 22:13:21,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 138.66666666666666) internal successors, (1248), 9 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:13:21,850 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:13:21,850 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] [2022-07-13 22:13:21,869 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-13 22:13:22,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-07-13 22:13:22,068 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:13:22,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:13:22,068 INFO L85 PathProgramCache]: Analyzing trace with hash 164975412, now seen corresponding path program 2 times [2022-07-13 22:13:22,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:13:22,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001708930] [2022-07-13 22:13:22,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:13:22,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:13:22,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:13:22,175 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-13 22:13:22,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:13:22,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001708930] [2022-07-13 22:13:22,176 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001708930] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:13:22,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [648376189] [2022-07-13 22:13:22,176 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-13 22:13:22,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:13:22,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:13:22,177 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:13:22,179 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-13 22:13:22,267 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-13 22:13:22,268 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 22:13:22,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-13 22:13:22,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:13:22,426 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-13 22:13:22,426 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:13:22,427 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [648376189] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:13:22,427 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 22:13:22,428 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2022-07-13 22:13:22,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499333207] [2022-07-13 22:13:22,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:13:22,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 22:13:22,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:13:22,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 22:13:22,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-07-13 22:13:22,429 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 196 [2022-07-13 22:13:22,430 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 180 transitions, 469 flow. Second operand has 6 states, 6 states have (on average 137.0) internal successors, (822), 6 states have internal predecessors, (822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:13:22,430 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:13:22,431 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 196 [2022-07-13 22:13:22,431 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:13:22,696 INFO L129 PetriNetUnfolder]: 608/1399 cut-off events. [2022-07-13 22:13:22,697 INFO L130 PetriNetUnfolder]: For 896/1098 co-relation queries the response was YES. [2022-07-13 22:13:22,700 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3131 conditions, 1399 events. 608/1399 cut-off events. For 896/1098 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 7873 event pairs, 181 based on Foata normal form. 234/1589 useless extension candidates. Maximal degree in co-relation 3119. Up to 535 conditions per place. [2022-07-13 22:13:22,705 INFO L132 encePairwiseOnDemand]: 187/196 looper letters, 57 selfloop transitions, 13 changer transitions 0/193 dead transitions. [2022-07-13 22:13:22,706 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 193 transitions, 662 flow [2022-07-13 22:13:22,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-13 22:13:22,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-07-13 22:13:22,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1098 transitions. [2022-07-13 22:13:22,708 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7002551020408163 [2022-07-13 22:13:22,708 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1098 transitions. [2022-07-13 22:13:22,708 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1098 transitions. [2022-07-13 22:13:22,709 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:13:22,709 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1098 transitions. [2022-07-13 22:13:22,711 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 137.25) internal successors, (1098), 8 states have internal predecessors, (1098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:13:22,712 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 196.0) internal successors, (1764), 9 states have internal predecessors, (1764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:13:22,713 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 196.0) internal successors, (1764), 9 states have internal predecessors, (1764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:13:22,713 INFO L186 Difference]: Start difference. First operand has 186 places, 180 transitions, 469 flow. Second operand 8 states and 1098 transitions. [2022-07-13 22:13:22,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 193 transitions, 662 flow [2022-07-13 22:13:22,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 193 transitions, 655 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-07-13 22:13:22,721 INFO L242 Difference]: Finished difference. Result has 191 places, 183 transitions, 530 flow [2022-07-13 22:13:22,721 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=462, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=530, PETRI_PLACES=191, PETRI_TRANSITIONS=183} [2022-07-13 22:13:22,723 INFO L279 CegarLoopForPetriNet]: 176 programPoint places, 15 predicate places. [2022-07-13 22:13:22,723 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 183 transitions, 530 flow [2022-07-13 22:13:22,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 137.0) internal successors, (822), 6 states have internal predecessors, (822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:13:22,724 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:13:22,724 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] [2022-07-13 22:13:22,743 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-13 22:13:22,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:13:22,944 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 22:13:22,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:13:22,944 INFO L85 PathProgramCache]: Analyzing trace with hash -2080790250, now seen corresponding path program 1 times [2022-07-13 22:13:22,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:13:22,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639472264] [2022-07-13 22:13:22,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:13:22,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:13:23,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:13:24,850 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:13:24,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:13:24,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639472264] [2022-07-13 22:13:24,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639472264] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:13:24,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1692294793] [2022-07-13 22:13:24,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:13:24,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:13:24,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:13:24,852 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:13:24,853 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-13 22:13:24,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:13:24,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 103 conjunts are in the unsatisfiable core [2022-07-13 22:13:24,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:13:25,025 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-13 22:13:25,077 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-13 22:13:25,078 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2022-07-13 22:13:25,470 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-07-13 22:13:25,471 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 25 [2022-07-13 22:13:25,793 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 15 treesize of output 11 [2022-07-13 22:13:26,576 INFO L356 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2022-07-13 22:13:26,576 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 26 [2022-07-13 22:13:26,806 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-13 22:13:27,269 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-13 22:13:27,371 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-13 22:13:27,477 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-13 22:13:27,855 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-13 22:13:27,855 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 38 treesize of output 98 [2022-07-13 22:13:28,281 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:13:28,281 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 22:14:22,503 WARN L833 $PredicateComparison]: unable to prove that (forall ((~M~0 Int) (v_ArrVal_201 (Array Int Int))) (or (<= (+ 2 ~M~0) c_~N~0) (not (< ~M~0 c_~N~0)) (and (forall ((~B~0.base Int)) (let ((.cse3 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_201))) (let ((.cse2 (select .cse3 c_~A~0.base)) (.cse0 (select .cse3 ~B~0.base))) (<= (let ((.cse1 (* ~M~0 4))) (+ c_~res2~0 (select .cse0 (+ .cse1 c_~B~0.offset)) (select .cse2 (+ c_~A~0.offset .cse1)))) (+ (select .cse2 c_~A~0.offset) c_~res1~0 (select .cse0 c_~B~0.offset)))))) (forall ((~B~0.base Int)) (let ((.cse7 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_201))) (let ((.cse5 (select .cse7 ~B~0.base)) (.cse4 (select .cse7 c_~A~0.base))) (<= (+ (select .cse4 c_~A~0.offset) c_~res1~0 (select .cse5 c_~B~0.offset)) (let ((.cse6 (* ~M~0 4))) (+ c_~res2~0 (select .cse5 (+ .cse6 c_~B~0.offset)) (select .cse4 (+ c_~A~0.offset .cse6))))))))))) is different from false [2022-07-13 22:14:22,656 WARN L833 $PredicateComparison]: unable to prove that (forall ((~M~0 Int) (v_ArrVal_200 (Array Int Int))) (or (<= (+ 2 ~M~0) c_~N~0) (and (forall ((~B~0.base Int) (v_ArrVal_201 (Array Int Int))) (let ((.cse3 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_200) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_201))) (let ((.cse0 (select .cse3 c_~A~0.base)) (.cse1 (select .cse3 ~B~0.base))) (<= (+ (select .cse0 c_~A~0.offset) (select .cse1 c_~B~0.offset) c_~res1~0) (let ((.cse2 (* ~M~0 4))) (+ (select .cse0 (+ c_~A~0.offset .cse2)) c_~res2~0 (select .cse1 (+ .cse2 c_~B~0.offset)))))))) (forall ((~B~0.base Int) (v_ArrVal_201 (Array Int Int))) (let ((.cse7 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_200) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_201))) (let ((.cse4 (select .cse7 c_~A~0.base)) (.cse6 (select .cse7 ~B~0.base))) (<= (let ((.cse5 (* ~M~0 4))) (+ (select .cse4 (+ c_~A~0.offset .cse5)) c_~res2~0 (select .cse6 (+ .cse5 c_~B~0.offset)))) (+ (select .cse4 c_~A~0.offset) (select .cse6 c_~B~0.offset) c_~res1~0)))))) (not (< ~M~0 c_~N~0)))) is different from false [2022-07-13 22:14:23,719 WARN L833 $PredicateComparison]: unable to prove that (forall ((~M~0 Int)) (or (<= (+ 2 ~M~0) c_~N~0) (and (forall ((v_ArrVal_199 (Array Int Int)) (~B~0.base Int) (v_ArrVal_201 (Array Int Int)) (v_ArrVal_200 (Array Int Int))) (let ((.cse3 (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_199) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_200) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_201))) (let ((.cse0 (select .cse3 c_~A~0.base)) (.cse2 (select .cse3 ~B~0.base))) (<= (let ((.cse1 (* ~M~0 4))) (+ c_~res2~0 (select .cse0 (+ c_~A~0.offset .cse1)) (select .cse2 (+ .cse1 |c_ULTIMATE.start_main_#t~ret19#1.offset|)))) (+ (select .cse0 c_~A~0.offset) (select .cse2 |c_ULTIMATE.start_main_#t~ret19#1.offset|) c_~res1~0))))) (forall ((v_ArrVal_199 (Array Int Int)) (~B~0.base Int) (v_ArrVal_201 (Array Int Int)) (v_ArrVal_200 (Array Int Int))) (let ((.cse7 (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_199) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_200) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_201))) (let ((.cse4 (select .cse7 c_~A~0.base)) (.cse5 (select .cse7 ~B~0.base))) (<= (+ (select .cse4 c_~A~0.offset) (select .cse5 |c_ULTIMATE.start_main_#t~ret19#1.offset|) c_~res1~0) (let ((.cse6 (* ~M~0 4))) (+ c_~res2~0 (select .cse4 (+ c_~A~0.offset .cse6)) (select .cse5 (+ .cse6 |c_ULTIMATE.start_main_#t~ret19#1.offset|))))))))) (not (< ~M~0 c_~N~0)))) is different from false [2022-07-13 22:14:23,781 WARN L833 $PredicateComparison]: unable to prove that (forall ((~M~0 Int)) (or (<= (+ 2 ~M~0) c_~N~0) (not (< ~M~0 c_~N~0)) (and (forall ((v_ArrVal_199 (Array Int Int)) (~B~0.base Int) (v_ArrVal_201 (Array Int Int)) (v_ArrVal_200 (Array Int Int))) (let ((.cse3 (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_199) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_200) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_201))) (let ((.cse0 (select .cse3 ~B~0.base)) (.cse2 (select .cse3 c_~A~0.base))) (<= (let ((.cse1 (* ~M~0 4))) (+ c_~res2~0 (select .cse0 (+ .cse1 |c_ULTIMATE.start_create_fresh_int_array_#res#1.offset|)) (select .cse2 (+ c_~A~0.offset .cse1)))) (+ (select .cse0 |c_ULTIMATE.start_create_fresh_int_array_#res#1.offset|) (select .cse2 c_~A~0.offset) c_~res1~0))))) (forall ((v_ArrVal_199 (Array Int Int)) (~B~0.base Int) (v_ArrVal_201 (Array Int Int)) (v_ArrVal_200 (Array Int Int))) (let ((.cse7 (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_199) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_200) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_201))) (let ((.cse4 (select .cse7 ~B~0.base)) (.cse5 (select .cse7 c_~A~0.base))) (<= (+ (select .cse4 |c_ULTIMATE.start_create_fresh_int_array_#res#1.offset|) (select .cse5 c_~A~0.offset) c_~res1~0) (let ((.cse6 (* ~M~0 4))) (+ c_~res2~0 (select .cse4 (+ .cse6 |c_ULTIMATE.start_create_fresh_int_array_#res#1.offset|)) (select .cse5 (+ c_~A~0.offset .cse6))))))))))) is different from false [2022-07-13 22:14:23,812 WARN L833 $PredicateComparison]: unable to prove that (forall ((~M~0 Int)) (or (<= (+ 2 ~M~0) c_~N~0) (not (< ~M~0 c_~N~0)) (and (forall ((v_ArrVal_199 (Array Int Int)) (~B~0.base Int) (v_ArrVal_201 (Array Int Int)) (v_ArrVal_200 (Array Int Int))) (let ((.cse3 (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_199) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_200) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_201))) (let ((.cse1 (select .cse3 ~B~0.base)) (.cse0 (select .cse3 c_~A~0.base))) (<= (+ (select .cse0 c_~A~0.offset) c_~res1~0 (select .cse1 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (let ((.cse2 (* ~M~0 4))) (+ (select .cse1 (+ .cse2 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) c_~res2~0 (select .cse0 (+ c_~A~0.offset .cse2)))))))) (forall ((v_ArrVal_199 (Array Int Int)) (~B~0.base Int) (v_ArrVal_201 (Array Int Int)) (v_ArrVal_200 (Array Int Int))) (let ((.cse7 (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_199) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_200) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_201))) (let ((.cse6 (select .cse7 c_~A~0.base)) (.cse4 (select .cse7 ~B~0.base))) (<= (let ((.cse5 (* ~M~0 4))) (+ (select .cse4 (+ .cse5 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) c_~res2~0 (select .cse6 (+ c_~A~0.offset .cse5)))) (+ (select .cse6 c_~A~0.offset) c_~res1~0 (select .cse4 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))))))))) is different from false [2022-07-13 22:14:23,962 WARN L833 $PredicateComparison]: unable to prove that (forall ((~M~0 Int) (v_ArrVal_198 (Array Int Int))) (or (<= (+ 2 ~M~0) c_~N~0) (not (< ~M~0 c_~N~0)) (and (forall ((v_ArrVal_199 (Array Int Int)) (~B~0.base Int) (v_ArrVal_201 (Array Int Int)) (v_ArrVal_200 (Array Int Int))) (let ((.cse3 (store (store (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_198) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_199) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_200) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_201))) (let ((.cse1 (select .cse3 ~B~0.base)) (.cse0 (select .cse3 c_~A~0.base))) (<= (+ c_~res1~0 (select .cse0 c_~A~0.offset) (select .cse1 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (let ((.cse2 (* ~M~0 4))) (+ (select .cse1 (+ .cse2 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (select .cse0 (+ c_~A~0.offset .cse2)) c_~res2~0)))))) (forall ((v_ArrVal_199 (Array Int Int)) (~B~0.base Int) (v_ArrVal_201 (Array Int Int)) (v_ArrVal_200 (Array Int Int))) (let ((.cse7 (store (store (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_198) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_199) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_200) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_201))) (let ((.cse6 (select .cse7 c_~A~0.base)) (.cse4 (select .cse7 ~B~0.base))) (<= (let ((.cse5 (* ~M~0 4))) (+ (select .cse4 (+ .cse5 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (select .cse6 (+ c_~A~0.offset .cse5)) c_~res2~0)) (+ c_~res1~0 (select .cse6 c_~A~0.offset) (select .cse4 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))))))))) is different from false [2022-07-13 22:14:24,116 WARN L833 $PredicateComparison]: unable to prove that (forall ((~M~0 Int)) (or (<= (+ 2 ~M~0) c_~N~0) (and (forall ((v_ArrVal_199 (Array Int Int)) (v_ArrVal_198 (Array Int Int)) (~B~0.base Int) (v_ArrVal_201 (Array Int Int)) (v_ArrVal_200 (Array Int Int))) (let ((.cse3 (store (store (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_#t~malloc29#1.base| v_ArrVal_198) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_199) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_200) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_201))) (let ((.cse0 (select .cse3 c_~A~0.base)) (.cse2 (select .cse3 ~B~0.base))) (<= (let ((.cse1 (* ~M~0 4))) (+ c_~res2~0 (select .cse0 (+ c_~A~0.offset .cse1)) (select .cse2 (+ |c_ULTIMATE.start_create_fresh_int_array_#t~malloc29#1.offset| .cse1)))) (+ (select .cse0 c_~A~0.offset) (select .cse2 |c_ULTIMATE.start_create_fresh_int_array_#t~malloc29#1.offset|) c_~res1~0))))) (forall ((v_ArrVal_199 (Array Int Int)) (v_ArrVal_198 (Array Int Int)) (~B~0.base Int) (v_ArrVal_201 (Array Int Int)) (v_ArrVal_200 (Array Int Int))) (let ((.cse7 (store (store (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_#t~malloc29#1.base| v_ArrVal_198) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_199) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_200) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_201))) (let ((.cse4 (select .cse7 c_~A~0.base)) (.cse5 (select .cse7 ~B~0.base))) (<= (+ (select .cse4 c_~A~0.offset) (select .cse5 |c_ULTIMATE.start_create_fresh_int_array_#t~malloc29#1.offset|) c_~res1~0) (let ((.cse6 (* ~M~0 4))) (+ c_~res2~0 (select .cse4 (+ c_~A~0.offset .cse6)) (select .cse5 (+ |c_ULTIMATE.start_create_fresh_int_array_#t~malloc29#1.offset| .cse6))))))))) (not (< ~M~0 c_~N~0)))) is different from false [2022-07-13 22:14:27,789 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-13 22:14:27,790 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 127 treesize of output 92 [2022-07-13 22:14:27,880 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-13 22:14:27,882 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 2195446 treesize of output 2105412 [2022-07-13 22:14:31,923 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-13 22:14:31,925 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 2105334 treesize of output 2048056 [2022-07-13 22:14:36,691 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-13 22:14:36,693 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 2047990 treesize of output 1589304 [2022-07-13 22:14:40,613 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-13 22:14:40,614 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 1589238 treesize of output 1359928 [2022-07-13 22:14:44,416 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-13 22:14:44,418 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 1359862 treesize of output 1245240 [2022-07-13 22:14:59,005 WARN L233 SmtUtils]: Spent 7.34s on a formula simplification that was a NOOP. DAG size: 979 (called from [L 927] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-07-13 22:15:59,324 WARN L233 SmtUtils]: Spent 7.21s on a formula simplification that was a NOOP. DAG size: 975 (called from [L 927] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-07-13 22:17:22,065 WARN L233 SmtUtils]: Spent 17.87s on a formula simplification. DAG size of input: 970 DAG size of output: 970 (called from [L 927] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)