./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/parallel-simple-equiv.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ae007674 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/parallel-simple-equiv.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 6e064514c886eab27bff1253cfa87b1ac324d3dc8890599c3d4384e987c0d244 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-28 03:03:40,784 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 03:03:40,787 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 03:03:40,830 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 03:03:40,831 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 03:03:40,834 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 03:03:40,835 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 03:03:40,840 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 03:03:40,842 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 03:03:40,847 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 03:03:40,848 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 03:03:40,850 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 03:03:40,850 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 03:03:40,852 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 03:03:40,854 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 03:03:40,859 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 03:03:40,860 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 03:03:40,860 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 03:03:40,863 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 03:03:40,868 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 03:03:40,869 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 03:03:40,870 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 03:03:40,871 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 03:03:40,873 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 03:03:40,878 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 03:03:40,879 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 03:03:40,879 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 03:03:40,881 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 03:03:40,881 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 03:03:40,882 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 03:03:40,882 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 03:03:40,883 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 03:03:40,884 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 03:03:40,885 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 03:03:40,887 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 03:03:40,887 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 03:03:40,888 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 03:03:40,888 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 03:03:40,888 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 03:03:40,889 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 03:03:40,890 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 03:03:40,894 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-28 03:03:40,929 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 03:03:40,929 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 03:03:40,930 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 03:03:40,931 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 03:03:40,932 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-28 03:03:40,932 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-28 03:03:40,933 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 03:03:40,933 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 03:03:40,933 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 03:03:40,934 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 03:03:40,934 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-28 03:03:40,935 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 03:03:40,935 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-28 03:03:40,935 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 03:03:40,935 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-28 03:03:40,935 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-28 03:03:40,936 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-28 03:03:40,936 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-28 03:03:40,936 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 03:03:40,936 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 03:03:40,936 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-28 03:03:40,937 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 03:03:40,937 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 03:03:40,937 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-28 03:03:40,937 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 03:03:40,938 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 03:03:40,944 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-28 03:03:40,945 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-28 03:03:40,945 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 03:03:40,945 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-28 03:03:40,945 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-28 03:03:40,946 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-28 03:03:40,946 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-28 03:03:40,946 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6e064514c886eab27bff1253cfa87b1ac324d3dc8890599c3d4384e987c0d244 [2021-12-28 03:03:41,299 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 03:03:41,322 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 03:03:41,325 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 03:03:41,326 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 03:03:41,327 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 03:03:41,328 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel-simple-equiv.wvr.c [2021-12-28 03:03:41,389 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2003bf324/a3c62e99520f4ec7b0079b687bb6586a/FLAG922a81480 [2021-12-28 03:03:41,788 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 03:03:41,789 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-simple-equiv.wvr.c [2021-12-28 03:03:41,796 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2003bf324/a3c62e99520f4ec7b0079b687bb6586a/FLAG922a81480 [2021-12-28 03:03:41,812 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2003bf324/a3c62e99520f4ec7b0079b687bb6586a [2021-12-28 03:03:41,814 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 03:03:41,816 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 03:03:41,820 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 03:03:41,820 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 03:03:41,823 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 03:03:41,824 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 03:03:41" (1/1) ... [2021-12-28 03:03:41,825 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ddbdd2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:03:41, skipping insertion in model container [2021-12-28 03:03:41,825 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 03:03:41" (1/1) ... [2021-12-28 03:03:41,830 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 03:03:41,845 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 03:03:42,017 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/parallel-simple-equiv.wvr.c[2212,2225] [2021-12-28 03:03:42,021 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 03:03:42,030 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 03:03:42,052 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/parallel-simple-equiv.wvr.c[2212,2225] [2021-12-28 03:03:42,053 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 03:03:42,081 INFO L208 MainTranslator]: Completed translation [2021-12-28 03:03:42,081 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:03:42 WrapperNode [2021-12-28 03:03:42,081 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 03:03:42,083 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 03:03:42,083 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 03:03:42,083 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 03:03:42,089 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:03:42" (1/1) ... [2021-12-28 03:03:42,097 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:03:42" (1/1) ... [2021-12-28 03:03:42,128 INFO L137 Inliner]: procedures = 22, calls = 30, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 71 [2021-12-28 03:03:42,128 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 03:03:42,129 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 03:03:42,130 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 03:03:42,130 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 03:03:42,137 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:03:42" (1/1) ... [2021-12-28 03:03:42,137 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:03:42" (1/1) ... [2021-12-28 03:03:42,148 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:03:42" (1/1) ... [2021-12-28 03:03:42,149 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:03:42" (1/1) ... [2021-12-28 03:03:42,157 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:03:42" (1/1) ... [2021-12-28 03:03:42,162 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:03:42" (1/1) ... [2021-12-28 03:03:42,163 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:03:42" (1/1) ... [2021-12-28 03:03:42,168 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 03:03:42,171 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 03:03:42,172 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 03:03:42,173 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 03:03:42,174 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:03:42" (1/1) ... [2021-12-28 03:03:42,179 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 03:03:42,188 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:03:42,202 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) [2021-12-28 03:03:42,227 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 [2021-12-28 03:03:42,246 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-28 03:03:42,247 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-12-28 03:03:42,247 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-12-28 03:03:42,247 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-12-28 03:03:42,247 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-12-28 03:03:42,247 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-12-28 03:03:42,248 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-12-28 03:03:42,248 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-28 03:03:42,248 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-28 03:03:42,248 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-28 03:03:42,248 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-12-28 03:03:42,248 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-12-28 03:03:42,249 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 03:03:42,249 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 03:03:42,249 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-28 03:03:42,249 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-28 03:03:42,251 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-12-28 03:03:42,315 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 03:03:42,316 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 03:03:42,509 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 03:03:42,545 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 03:03:42,545 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-28 03:03:42,547 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 03:03:42 BoogieIcfgContainer [2021-12-28 03:03:42,547 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 03:03:42,549 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-28 03:03:42,549 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-28 03:03:42,551 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-28 03:03:42,552 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.12 03:03:41" (1/3) ... [2021-12-28 03:03:42,552 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ac01d15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 03:03:42, skipping insertion in model container [2021-12-28 03:03:42,552 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:03:42" (2/3) ... [2021-12-28 03:03:42,553 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ac01d15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 03:03:42, skipping insertion in model container [2021-12-28 03:03:42,553 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 03:03:42" (3/3) ... [2021-12-28 03:03:42,562 INFO L111 eAbstractionObserver]: Analyzing ICFG parallel-simple-equiv.wvr.c [2021-12-28 03:03:42,566 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-12-28 03:03:42,567 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-28 03:03:42,567 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-28 03:03:42,567 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-12-28 03:03:42,623 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:03:42,624 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:03:42,624 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:03:42,624 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:03:42,624 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:03:42,639 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:03:42,640 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:03:42,640 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:03:42,641 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:03:42,641 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:03:42,641 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:03:42,641 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:03:42,643 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:03:42,643 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:03:42,643 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:03:42,643 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:03:42,646 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:03:42,646 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:03:42,648 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:03:42,648 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:03:42,648 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:03:42,649 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:03:42,649 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:03:42,649 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:03:42,656 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-12-28 03:03:42,701 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-28 03:03:42,707 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-28 03:03:42,711 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-12-28 03:03:42,722 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 102 places, 94 transitions, 212 flow [2021-12-28 03:03:42,799 INFO L129 PetriNetUnfolder]: 2/91 cut-off events. [2021-12-28 03:03:42,799 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-12-28 03:03:42,802 INFO L84 FinitePrefix]: Finished finitePrefix Result has 104 conditions, 91 events. 2/91 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 25 event pairs, 0 based on Foata normal form. 0/88 useless extension candidates. Maximal degree in co-relation 57. Up to 2 conditions per place. [2021-12-28 03:03:42,802 INFO L82 GeneralOperation]: Start removeDead. Operand has 102 places, 94 transitions, 212 flow [2021-12-28 03:03:42,808 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 88 places, 80 transitions, 178 flow [2021-12-28 03:03:42,859 INFO L129 PetriNetUnfolder]: 2/79 cut-off events. [2021-12-28 03:03:42,859 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-12-28 03:03:42,859 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-28 03:03:42,860 INFO L254 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] [2021-12-28 03:03:42,860 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-28 03:03:42,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:03:42,865 INFO L85 PathProgramCache]: Analyzing trace with hash 1985561410, now seen corresponding path program 1 times [2021-12-28 03:03:42,873 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:03:42,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168269464] [2021-12-28 03:03:42,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:03:42,876 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:03:43,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:03:43,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 03:03:43,726 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:03:43,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168269464] [2021-12-28 03:03:43,728 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168269464] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:03:43,728 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:03:43,728 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-28 03:03:43,730 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389907972] [2021-12-28 03:03:43,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:03:43,738 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-28 03:03:43,739 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:03:43,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-28 03:03:43,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-12-28 03:03:43,775 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 94 [2021-12-28 03:03:43,780 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 80 transitions, 178 flow. Second operand has 11 states, 11 states have (on average 65.36363636363636) internal successors, (719), 11 states have internal predecessors, (719), 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) [2021-12-28 03:03:43,780 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-28 03:03:43,780 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 94 [2021-12-28 03:03:43,782 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-28 03:03:44,533 INFO L129 PetriNetUnfolder]: 47/216 cut-off events. [2021-12-28 03:03:44,534 INFO L130 PetriNetUnfolder]: For 79/85 co-relation queries the response was YES. [2021-12-28 03:03:44,535 INFO L84 FinitePrefix]: Finished finitePrefix Result has 379 conditions, 216 events. 47/216 cut-off events. For 79/85 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 693 event pairs, 23 based on Foata normal form. 6/213 useless extension candidates. Maximal degree in co-relation 246. Up to 85 conditions per place. [2021-12-28 03:03:44,538 INFO L132 encePairwiseOnDemand]: 78/94 looper letters, 27 selfloop transitions, 15 changer transitions 13/105 dead transitions. [2021-12-28 03:03:44,538 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 105 transitions, 359 flow [2021-12-28 03:03:44,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-28 03:03:44,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-12-28 03:03:44,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 878 transitions. [2021-12-28 03:03:44,554 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7184942716857611 [2021-12-28 03:03:44,554 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 878 transitions. [2021-12-28 03:03:44,555 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 878 transitions. [2021-12-28 03:03:44,557 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 03:03:44,559 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 878 transitions. [2021-12-28 03:03:44,568 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 67.53846153846153) internal successors, (878), 13 states have internal predecessors, (878), 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) [2021-12-28 03:03:44,576 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 94.0) internal successors, (1316), 14 states have internal predecessors, (1316), 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) [2021-12-28 03:03:44,577 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 94.0) internal successors, (1316), 14 states have internal predecessors, (1316), 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) [2021-12-28 03:03:44,579 INFO L186 Difference]: Start difference. First operand has 88 places, 80 transitions, 178 flow. Second operand 13 states and 878 transitions. [2021-12-28 03:03:44,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 105 transitions, 359 flow [2021-12-28 03:03:44,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 105 transitions, 333 flow, removed 0 selfloop flow, removed 6 redundant places. [2021-12-28 03:03:44,586 INFO L242 Difference]: Finished difference. Result has 99 places, 88 transitions, 249 flow [2021-12-28 03:03:44,588 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=249, PETRI_PLACES=99, PETRI_TRANSITIONS=88} [2021-12-28 03:03:44,591 INFO L334 CegarLoopForPetriNet]: 88 programPoint places, 11 predicate places. [2021-12-28 03:03:44,591 INFO L470 AbstractCegarLoop]: Abstraction has has 99 places, 88 transitions, 249 flow [2021-12-28 03:03:44,592 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 65.36363636363636) internal successors, (719), 11 states have internal predecessors, (719), 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) [2021-12-28 03:03:44,592 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-28 03:03:44,592 INFO L254 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] [2021-12-28 03:03:44,592 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-28 03:03:44,593 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-28 03:03:44,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:03:44,594 INFO L85 PathProgramCache]: Analyzing trace with hash 653009678, now seen corresponding path program 2 times [2021-12-28 03:03:44,594 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:03:44,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160250204] [2021-12-28 03:03:44,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:03:44,594 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:03:44,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:03:44,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 03:03:44,910 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:03:44,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160250204] [2021-12-28 03:03:44,911 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160250204] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:03:44,911 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:03:44,911 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-28 03:03:44,911 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836884152] [2021-12-28 03:03:44,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:03:44,912 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-28 03:03:44,913 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:03:44,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-28 03:03:44,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-12-28 03:03:44,915 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 94 [2021-12-28 03:03:44,916 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 88 transitions, 249 flow. Second operand has 11 states, 11 states have (on average 65.36363636363636) internal successors, (719), 11 states have internal predecessors, (719), 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) [2021-12-28 03:03:44,916 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-28 03:03:44,916 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 94 [2021-12-28 03:03:44,917 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-28 03:03:45,337 INFO L129 PetriNetUnfolder]: 61/265 cut-off events. [2021-12-28 03:03:45,337 INFO L130 PetriNetUnfolder]: For 97/97 co-relation queries the response was YES. [2021-12-28 03:03:45,339 INFO L84 FinitePrefix]: Finished finitePrefix Result has 567 conditions, 265 events. 61/265 cut-off events. For 97/97 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1017 event pairs, 1 based on Foata normal form. 1/265 useless extension candidates. Maximal degree in co-relation 554. Up to 71 conditions per place. [2021-12-28 03:03:45,340 INFO L132 encePairwiseOnDemand]: 82/94 looper letters, 41 selfloop transitions, 19 changer transitions 19/129 dead transitions. [2021-12-28 03:03:45,340 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 129 transitions, 562 flow [2021-12-28 03:03:45,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-28 03:03:45,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-12-28 03:03:45,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 885 transitions. [2021-12-28 03:03:45,343 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7242225859247136 [2021-12-28 03:03:45,344 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 885 transitions. [2021-12-28 03:03:45,344 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 885 transitions. [2021-12-28 03:03:45,344 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 03:03:45,344 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 885 transitions. [2021-12-28 03:03:45,346 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 68.07692307692308) internal successors, (885), 13 states have internal predecessors, (885), 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) [2021-12-28 03:03:45,349 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 94.0) internal successors, (1316), 14 states have internal predecessors, (1316), 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) [2021-12-28 03:03:45,350 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 94.0) internal successors, (1316), 14 states have internal predecessors, (1316), 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) [2021-12-28 03:03:45,350 INFO L186 Difference]: Start difference. First operand has 99 places, 88 transitions, 249 flow. Second operand 13 states and 885 transitions. [2021-12-28 03:03:45,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 129 transitions, 562 flow [2021-12-28 03:03:45,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 129 transitions, 548 flow, removed 5 selfloop flow, removed 4 redundant places. [2021-12-28 03:03:45,356 INFO L242 Difference]: Finished difference. Result has 105 places, 101 transitions, 373 flow [2021-12-28 03:03:45,356 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=239, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=373, PETRI_PLACES=105, PETRI_TRANSITIONS=101} [2021-12-28 03:03:45,357 INFO L334 CegarLoopForPetriNet]: 88 programPoint places, 17 predicate places. [2021-12-28 03:03:45,357 INFO L470 AbstractCegarLoop]: Abstraction has has 105 places, 101 transitions, 373 flow [2021-12-28 03:03:45,358 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 65.36363636363636) internal successors, (719), 11 states have internal predecessors, (719), 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) [2021-12-28 03:03:45,358 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-28 03:03:45,358 INFO L254 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] [2021-12-28 03:03:45,358 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-28 03:03:45,358 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-28 03:03:45,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:03:45,359 INFO L85 PathProgramCache]: Analyzing trace with hash -2028188250, now seen corresponding path program 3 times [2021-12-28 03:03:45,359 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:03:45,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203385257] [2021-12-28 03:03:45,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:03:45,360 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:03:45,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:03:45,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 03:03:45,684 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:03:45,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203385257] [2021-12-28 03:03:45,684 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203385257] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:03:45,684 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:03:45,684 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-28 03:03:45,685 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733093729] [2021-12-28 03:03:45,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:03:45,685 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-28 03:03:45,685 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:03:45,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-28 03:03:45,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-12-28 03:03:45,688 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 94 [2021-12-28 03:03:45,689 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 101 transitions, 373 flow. Second operand has 11 states, 11 states have (on average 65.36363636363636) internal successors, (719), 11 states have internal predecessors, (719), 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) [2021-12-28 03:03:45,689 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-28 03:03:45,689 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 94 [2021-12-28 03:03:45,690 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-28 03:03:46,089 INFO L129 PetriNetUnfolder]: 53/276 cut-off events. [2021-12-28 03:03:46,090 INFO L130 PetriNetUnfolder]: For 212/220 co-relation queries the response was YES. [2021-12-28 03:03:46,091 INFO L84 FinitePrefix]: Finished finitePrefix Result has 683 conditions, 276 events. 53/276 cut-off events. For 212/220 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1173 event pairs, 4 based on Foata normal form. 4/278 useless extension candidates. Maximal degree in co-relation 666. Up to 49 conditions per place. [2021-12-28 03:03:46,092 INFO L132 encePairwiseOnDemand]: 82/94 looper letters, 24 selfloop transitions, 15 changer transitions 41/130 dead transitions. [2021-12-28 03:03:46,092 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 130 transitions, 672 flow [2021-12-28 03:03:46,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-28 03:03:46,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-12-28 03:03:46,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 883 transitions. [2021-12-28 03:03:46,095 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7225859247135843 [2021-12-28 03:03:46,095 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 883 transitions. [2021-12-28 03:03:46,096 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 883 transitions. [2021-12-28 03:03:46,096 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 03:03:46,096 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 883 transitions. [2021-12-28 03:03:46,098 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 67.92307692307692) internal successors, (883), 13 states have internal predecessors, (883), 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) [2021-12-28 03:03:46,100 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 94.0) internal successors, (1316), 14 states have internal predecessors, (1316), 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) [2021-12-28 03:03:46,101 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 94.0) internal successors, (1316), 14 states have internal predecessors, (1316), 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) [2021-12-28 03:03:46,101 INFO L186 Difference]: Start difference. First operand has 105 places, 101 transitions, 373 flow. Second operand 13 states and 883 transitions. [2021-12-28 03:03:46,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 130 transitions, 672 flow [2021-12-28 03:03:46,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 130 transitions, 619 flow, removed 20 selfloop flow, removed 6 redundant places. [2021-12-28 03:03:46,107 INFO L242 Difference]: Finished difference. Result has 113 places, 85 transitions, 302 flow [2021-12-28 03:03:46,108 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=332, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=302, PETRI_PLACES=113, PETRI_TRANSITIONS=85} [2021-12-28 03:03:46,109 INFO L334 CegarLoopForPetriNet]: 88 programPoint places, 25 predicate places. [2021-12-28 03:03:46,109 INFO L470 AbstractCegarLoop]: Abstraction has has 113 places, 85 transitions, 302 flow [2021-12-28 03:03:46,109 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 65.36363636363636) internal successors, (719), 11 states have internal predecessors, (719), 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) [2021-12-28 03:03:46,110 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-28 03:03:46,110 INFO L254 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] [2021-12-28 03:03:46,110 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-28 03:03:46,110 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-28 03:03:46,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:03:46,111 INFO L85 PathProgramCache]: Analyzing trace with hash -203117776, now seen corresponding path program 4 times [2021-12-28 03:03:46,111 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:03:46,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60494321] [2021-12-28 03:03:46,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:03:46,112 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:03:46,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:03:46,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 03:03:46,338 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:03:46,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60494321] [2021-12-28 03:03:46,338 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60494321] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:03:46,338 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:03:46,338 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-28 03:03:46,338 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473574889] [2021-12-28 03:03:46,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:03:46,339 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-28 03:03:46,339 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:03:46,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-28 03:03:46,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-12-28 03:03:46,341 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 94 [2021-12-28 03:03:46,342 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 85 transitions, 302 flow. Second operand has 11 states, 11 states have (on average 65.36363636363636) internal successors, (719), 11 states have internal predecessors, (719), 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) [2021-12-28 03:03:46,342 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-28 03:03:46,342 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 94 [2021-12-28 03:03:46,342 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-28 03:03:46,661 INFO L129 PetriNetUnfolder]: 12/139 cut-off events. [2021-12-28 03:03:46,661 INFO L130 PetriNetUnfolder]: For 130/130 co-relation queries the response was YES. [2021-12-28 03:03:46,662 INFO L84 FinitePrefix]: Finished finitePrefix Result has 325 conditions, 139 events. 12/139 cut-off events. For 130/130 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 343 event pairs, 2 based on Foata normal form. 1/138 useless extension candidates. Maximal degree in co-relation 305. Up to 26 conditions per place. [2021-12-28 03:03:46,662 INFO L132 encePairwiseOnDemand]: 82/94 looper letters, 22 selfloop transitions, 6 changer transitions 19/97 dead transitions. [2021-12-28 03:03:46,662 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 97 transitions, 433 flow [2021-12-28 03:03:46,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-28 03:03:46,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-12-28 03:03:46,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 865 transitions. [2021-12-28 03:03:46,666 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7078559738134206 [2021-12-28 03:03:46,667 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 865 transitions. [2021-12-28 03:03:46,667 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 865 transitions. [2021-12-28 03:03:46,667 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 03:03:46,667 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 865 transitions. [2021-12-28 03:03:46,669 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 66.53846153846153) internal successors, (865), 13 states have internal predecessors, (865), 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) [2021-12-28 03:03:46,671 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 94.0) internal successors, (1316), 14 states have internal predecessors, (1316), 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) [2021-12-28 03:03:46,672 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 94.0) internal successors, (1316), 14 states have internal predecessors, (1316), 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) [2021-12-28 03:03:46,673 INFO L186 Difference]: Start difference. First operand has 113 places, 85 transitions, 302 flow. Second operand 13 states and 865 transitions. [2021-12-28 03:03:46,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 97 transitions, 433 flow [2021-12-28 03:03:46,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 97 transitions, 368 flow, removed 14 selfloop flow, removed 16 redundant places. [2021-12-28 03:03:46,687 INFO L242 Difference]: Finished difference. Result has 107 places, 78 transitions, 221 flow [2021-12-28 03:03:46,688 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=241, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=221, PETRI_PLACES=107, PETRI_TRANSITIONS=78} [2021-12-28 03:03:46,688 INFO L334 CegarLoopForPetriNet]: 88 programPoint places, 19 predicate places. [2021-12-28 03:03:46,688 INFO L470 AbstractCegarLoop]: Abstraction has has 107 places, 78 transitions, 221 flow [2021-12-28 03:03:46,689 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 65.36363636363636) internal successors, (719), 11 states have internal predecessors, (719), 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) [2021-12-28 03:03:46,689 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-28 03:03:46,689 INFO L254 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] [2021-12-28 03:03:46,690 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-28 03:03:46,690 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-28 03:03:46,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:03:46,691 INFO L85 PathProgramCache]: Analyzing trace with hash 1982401284, now seen corresponding path program 5 times [2021-12-28 03:03:46,691 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:03:46,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070714093] [2021-12-28 03:03:46,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:03:46,691 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:03:46,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:03:46,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 03:03:46,921 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:03:46,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070714093] [2021-12-28 03:03:46,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070714093] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:03:46,921 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:03:46,921 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-28 03:03:46,921 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134883918] [2021-12-28 03:03:46,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:03:46,922 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-28 03:03:46,922 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:03:46,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-28 03:03:46,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-12-28 03:03:46,923 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 94 [2021-12-28 03:03:46,924 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 78 transitions, 221 flow. Second operand has 11 states, 11 states have (on average 65.36363636363636) internal successors, (719), 11 states have internal predecessors, (719), 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) [2021-12-28 03:03:46,924 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-28 03:03:46,924 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 94 [2021-12-28 03:03:46,925 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-28 03:03:47,214 INFO L129 PetriNetUnfolder]: 4/89 cut-off events. [2021-12-28 03:03:47,215 INFO L130 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2021-12-28 03:03:47,215 INFO L84 FinitePrefix]: Finished finitePrefix Result has 171 conditions, 89 events. 4/89 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 69 event pairs, 0 based on Foata normal form. 1/90 useless extension candidates. Maximal degree in co-relation 160. Up to 7 conditions per place. [2021-12-28 03:03:47,215 INFO L132 encePairwiseOnDemand]: 82/94 looper letters, 0 selfloop transitions, 0 changer transitions 78/78 dead transitions. [2021-12-28 03:03:47,215 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 78 transitions, 282 flow [2021-12-28 03:03:47,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-28 03:03:47,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-12-28 03:03:47,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 787 transitions. [2021-12-28 03:03:47,218 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6976950354609929 [2021-12-28 03:03:47,218 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 787 transitions. [2021-12-28 03:03:47,218 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 787 transitions. [2021-12-28 03:03:47,218 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 03:03:47,218 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 787 transitions. [2021-12-28 03:03:47,220 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 65.58333333333333) internal successors, (787), 12 states have internal predecessors, (787), 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) [2021-12-28 03:03:47,222 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 94.0) internal successors, (1222), 13 states have internal predecessors, (1222), 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) [2021-12-28 03:03:47,222 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 94.0) internal successors, (1222), 13 states have internal predecessors, (1222), 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) [2021-12-28 03:03:47,222 INFO L186 Difference]: Start difference. First operand has 107 places, 78 transitions, 221 flow. Second operand 12 states and 787 transitions. [2021-12-28 03:03:47,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 78 transitions, 282 flow [2021-12-28 03:03:47,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 78 transitions, 247 flow, removed 2 selfloop flow, removed 14 redundant places. [2021-12-28 03:03:47,224 INFO L242 Difference]: Finished difference. Result has 93 places, 0 transitions, 0 flow [2021-12-28 03:03:47,225 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=0, PETRI_PLACES=93, PETRI_TRANSITIONS=0} [2021-12-28 03:03:47,225 INFO L334 CegarLoopForPetriNet]: 88 programPoint places, 5 predicate places. [2021-12-28 03:03:47,226 INFO L470 AbstractCegarLoop]: Abstraction has has 93 places, 0 transitions, 0 flow [2021-12-28 03:03:47,226 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 65.36363636363636) internal successors, (719), 11 states have internal predecessors, (719), 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) [2021-12-28 03:03:47,228 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2021-12-28 03:03:47,229 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 4 remaining) [2021-12-28 03:03:47,229 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (1 of 4 remaining) [2021-12-28 03:03:47,229 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION (0 of 4 remaining) [2021-12-28 03:03:47,229 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-28 03:03:47,233 INFO L732 BasicCegarLoop]: Path program histogram: [5] [2021-12-28 03:03:47,234 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-12-28 03:03:47,234 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-28 03:03:47,237 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.12 03:03:47 BasicIcfg [2021-12-28 03:03:47,237 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-28 03:03:47,238 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-28 03:03:47,238 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-28 03:03:47,238 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-28 03:03:47,239 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 03:03:42" (3/4) ... [2021-12-28 03:03:47,241 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-12-28 03:03:47,246 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2021-12-28 03:03:47,246 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2021-12-28 03:03:47,246 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2021-12-28 03:03:47,249 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2021-12-28 03:03:47,249 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-12-28 03:03:47,250 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-12-28 03:03:47,250 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-12-28 03:03:47,279 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-28 03:03:47,279 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-28 03:03:47,280 INFO L158 Benchmark]: Toolchain (without parser) took 5463.98ms. Allocated memory was 50.3MB in the beginning and 107.0MB in the end (delta: 56.6MB). Free memory was 27.5MB in the beginning and 28.5MB in the end (delta: -931.6kB). Peak memory consumption was 55.0MB. Max. memory is 16.1GB. [2021-12-28 03:03:47,280 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 50.3MB. Free memory was 32.8MB in the beginning and 32.8MB in the end (delta: 38.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-28 03:03:47,281 INFO L158 Benchmark]: CACSL2BoogieTranslator took 262.21ms. Allocated memory was 50.3MB in the beginning and 62.9MB in the end (delta: 12.6MB). Free memory was 27.4MB in the beginning and 46.9MB in the end (delta: -19.5MB). Peak memory consumption was 5.4MB. Max. memory is 16.1GB. [2021-12-28 03:03:47,281 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.97ms. Allocated memory is still 62.9MB. Free memory was 46.9MB in the beginning and 45.2MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-28 03:03:47,281 INFO L158 Benchmark]: Boogie Preprocessor took 41.36ms. Allocated memory is still 62.9MB. Free memory was 45.2MB in the beginning and 44.1MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-28 03:03:47,282 INFO L158 Benchmark]: RCFGBuilder took 376.12ms. Allocated memory is still 62.9MB. Free memory was 44.1MB in the beginning and 31.7MB in the end (delta: 12.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-28 03:03:47,282 INFO L158 Benchmark]: TraceAbstraction took 4688.67ms. Allocated memory was 62.9MB in the beginning and 107.0MB in the end (delta: 44.0MB). Free memory was 31.2MB in the beginning and 30.6MB in the end (delta: 632.4kB). Peak memory consumption was 47.5MB. Max. memory is 16.1GB. [2021-12-28 03:03:47,283 INFO L158 Benchmark]: Witness Printer took 41.47ms. Allocated memory is still 107.0MB. Free memory was 30.6MB in the beginning and 28.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-28 03:03:47,285 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 50.3MB. Free memory was 32.8MB in the beginning and 32.8MB in the end (delta: 38.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 262.21ms. Allocated memory was 50.3MB in the beginning and 62.9MB in the end (delta: 12.6MB). Free memory was 27.4MB in the beginning and 46.9MB in the end (delta: -19.5MB). Peak memory consumption was 5.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 45.97ms. Allocated memory is still 62.9MB. Free memory was 46.9MB in the beginning and 45.2MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 41.36ms. Allocated memory is still 62.9MB. Free memory was 45.2MB in the beginning and 44.1MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 376.12ms. Allocated memory is still 62.9MB. Free memory was 44.1MB in the beginning and 31.7MB in the end (delta: 12.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 4688.67ms. Allocated memory was 62.9MB in the beginning and 107.0MB in the end (delta: 44.0MB). Free memory was 31.2MB in the beginning and 30.6MB in the end (delta: 632.4kB). Peak memory consumption was 47.5MB. Max. memory is 16.1GB. * Witness Printer took 41.47ms. Allocated memory is still 107.0MB. Free memory was 30.6MB in the beginning and 28.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 82]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 111 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.1s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 4.5s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 2.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 204 SdHoareTripleChecker+Valid, 1.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 204 mSDsluCounter, 254 SdHoareTripleChecker+Invalid, 1.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 564 mSDsCounter, 92 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1278 IncrementalHoareTripleChecker+Invalid, 1370 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 92 mSolverCounterUnsat, 57 mSDtfsCounter, 1278 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 101 GetRequests, 11 SyntacticMatches, 9 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=373occurred in iteration=2, InterpolantAutomatonStates: 64, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 380 NumberOfCodeBlocks, 380 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 375 ConstructedInterpolants, 0 QuantifiedInterpolants, 6464 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-12-28 03:03:47,307 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE