./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/chl/sre-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8c2bbc92 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/chl/sre-subst.wvr.c -s /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-2/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 21e468193d51a604c07114712590b5a7925fd0ec ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-04 18:39:17,878 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-04 18:39:17,882 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-04 18:39:17,956 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-04 18:39:17,956 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-04 18:39:17,961 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-04 18:39:17,964 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-04 18:39:17,969 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-04 18:39:17,973 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-04 18:39:17,979 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-04 18:39:17,981 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-04 18:39:17,987 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-04 18:39:17,988 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-04 18:39:17,991 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-04 18:39:17,997 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-04 18:39:18,002 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-04 18:39:18,004 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-04 18:39:18,005 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-04 18:39:18,008 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-04 18:39:18,017 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-04 18:39:18,019 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-04 18:39:18,020 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-04 18:39:18,022 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-04 18:39:18,024 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-04 18:39:18,034 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-04 18:39:18,035 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-04 18:39:18,035 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-04 18:39:18,037 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-04 18:39:18,038 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-04 18:39:18,040 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-04 18:39:18,040 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-04 18:39:18,041 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-04 18:39:18,043 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-04 18:39:18,044 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-04 18:39:18,046 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-04 18:39:18,047 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-04 18:39:18,048 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-04 18:39:18,048 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-04 18:39:18,048 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-04 18:39:18,051 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-04 18:39:18,051 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-04 18:39:18,059 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-04 18:39:18,106 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-04 18:39:18,107 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-04 18:39:18,107 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-04 18:39:18,108 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-04 18:39:18,111 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-04 18:39:18,111 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-04 18:39:18,112 INFO L138 SettingsManager]: * Use SBE=true [2021-10-04 18:39:18,112 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-04 18:39:18,112 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-04 18:39:18,112 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-04 18:39:18,114 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-04 18:39:18,114 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-04 18:39:18,114 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-04 18:39:18,115 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-04 18:39:18,115 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-04 18:39:18,115 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-04 18:39:18,116 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-04 18:39:18,116 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-04 18:39:18,116 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-04 18:39:18,117 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-04 18:39:18,117 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-04 18:39:18,117 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-04 18:39:18,118 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-04 18:39:18,118 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-04 18:39:18,118 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-04 18:39:18,119 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-04 18:39:18,119 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-04 18:39:18,119 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-04 18:39:18,120 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-04 18:39:18,120 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-04 18:39:18,120 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-2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 21e468193d51a604c07114712590b5a7925fd0ec [2021-10-04 18:39:18,633 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-04 18:39:18,666 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-04 18:39:18,670 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-04 18:39:18,672 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-04 18:39:18,673 INFO L275 PluginConnector]: CDTParser initialized [2021-10-04 18:39:18,674 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl/sre-subst.wvr.c [2021-10-04 18:39:18,758 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/61cf1f1b9/28a8983124ef468780f43b99723604c4/FLAG41fd26dde [2021-10-04 18:39:19,387 INFO L306 CDTParser]: Found 1 translation units. [2021-10-04 18:39:19,387 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/chl/sre-subst.wvr.c [2021-10-04 18:39:19,388 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2021-10-04 18:39:19,388 WARN L117 ultiparseSymbolTable]: System include assert.h could not be resolved by CDT -- only built-in system includes are available. [2021-10-04 18:39:19,396 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/61cf1f1b9/28a8983124ef468780f43b99723604c4/FLAG41fd26dde [2021-10-04 18:39:19,772 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/61cf1f1b9/28a8983124ef468780f43b99723604c4 [2021-10-04 18:39:19,778 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-04 18:39:19,786 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-04 18:39:19,787 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-04 18:39:19,788 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-04 18:39:19,792 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-04 18:39:19,793 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.10 06:39:19" (1/1) ... [2021-10-04 18:39:19,794 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31b16dd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.10 06:39:19, skipping insertion in model container [2021-10-04 18:39:19,795 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.10 06:39:19" (1/1) ... [2021-10-04 18:39:19,805 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-04 18:39:19,836 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-04 18:39:20,018 WARN L612 FunctionHandler]: implicit declaration of function assert [2021-10-04 18:39:20,090 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/chl/sre-subst.wvr.c[1282,1295] [2021-10-04 18:39:20,095 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-04 18:39:20,104 INFO L203 MainTranslator]: Completed pre-run [2021-10-04 18:39:20,116 WARN L612 FunctionHandler]: implicit declaration of function assert [2021-10-04 18:39:20,129 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/chl/sre-subst.wvr.c[1282,1295] [2021-10-04 18:39:20,130 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-04 18:39:20,146 INFO L208 MainTranslator]: Completed translation [2021-10-04 18:39:20,147 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.10 06:39:20 WrapperNode [2021-10-04 18:39:20,147 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-04 18:39:20,149 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-04 18:39:20,149 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-04 18:39:20,149 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-04 18:39:20,158 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.10 06:39:20" (1/1) ... [2021-10-04 18:39:20,165 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.10 06:39:20" (1/1) ... [2021-10-04 18:39:20,194 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-04 18:39:20,195 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-04 18:39:20,195 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-04 18:39:20,195 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-04 18:39:20,205 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.10 06:39:20" (1/1) ... [2021-10-04 18:39:20,206 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.10 06:39:20" (1/1) ... [2021-10-04 18:39:20,208 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.10 06:39:20" (1/1) ... [2021-10-04 18:39:20,209 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.10 06:39:20" (1/1) ... [2021-10-04 18:39:20,215 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.10 06:39:20" (1/1) ... [2021-10-04 18:39:20,218 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.10 06:39:20" (1/1) ... [2021-10-04 18:39:20,220 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.10 06:39:20" (1/1) ... [2021-10-04 18:39:20,222 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-04 18:39:20,224 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-04 18:39:20,224 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-04 18:39:20,224 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-04 18:39:20,225 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.10 06:39:20" (1/1) ... [2021-10-04 18:39:20,236 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-04 18:39:20,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-04 18:39:20,265 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-04 18:39:20,281 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-04 18:39:20,334 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-04 18:39:20,334 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-04 18:39:20,334 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-04 18:39:20,334 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-04 18:39:20,335 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-10-04 18:39:20,335 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-10-04 18:39:20,335 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-04 18:39:20,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-04 18:39:20,336 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-04 18:39:20,336 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-04 18:39:20,336 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-04 18:39:20,336 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-04 18:39:20,338 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-04 18:39:20,682 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-04 18:39:20,682 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-10-04 18:39:20,686 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.10 06:39:20 BoogieIcfgContainer [2021-10-04 18:39:20,686 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-04 18:39:20,688 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-04 18:39:20,688 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-04 18:39:20,692 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-04 18:39:20,693 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.10 06:39:19" (1/3) ... [2021-10-04 18:39:20,694 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73c3515d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.10 06:39:20, skipping insertion in model container [2021-10-04 18:39:20,694 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.10 06:39:20" (2/3) ... [2021-10-04 18:39:20,695 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73c3515d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.10 06:39:20, skipping insertion in model container [2021-10-04 18:39:20,695 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.10 06:39:20" (3/3) ... [2021-10-04 18:39:20,697 INFO L111 eAbstractionObserver]: Analyzing ICFG sre-subst.wvr.c [2021-10-04 18:39:20,704 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-04 18:39:20,705 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-04 18:39:20,705 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-04 18:39:20,705 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-04 18:39:20,752 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:39:20,753 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:39:20,754 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:39:20,754 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:39:20,755 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:39:20,755 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:39:20,755 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:39:20,756 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:39:20,756 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:39:20,757 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:39:20,757 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:39:20,757 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:39:20,757 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:39:20,758 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:39:20,758 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:39:20,758 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:39:20,760 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:39:20,760 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:39:20,761 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:39:20,762 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:39:20,762 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:39:20,762 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:39:20,763 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:39:20,763 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:39:20,763 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:39:20,764 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:39:20,764 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:39:20,764 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:39:20,765 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:39:20,765 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:39:20,765 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:39:20,766 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:39:20,767 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:39:20,768 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:39:20,769 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:39:20,769 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:39:20,769 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:39:20,770 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:39:20,770 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:39:20,770 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:39:20,771 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:39:20,771 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:39:20,772 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:39:20,772 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:39:20,772 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:39:20,773 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:39:20,773 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:39:20,773 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:39:20,777 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:39:20,778 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:39:20,778 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:39:20,778 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:39:20,789 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:39:20,789 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:39:20,789 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:39:20,790 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:39:20,795 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:39:20,795 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:39:20,798 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:39:20,798 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:39:20,824 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-10-04 18:39:20,901 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-04 18:39:20,910 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, mConcurrency=FINITE_AUTOMATA, 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 [2021-10-04 18:39:20,910 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-10-04 18:39:20,930 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-04 18:39:20,959 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 108 places, 106 transitions, 236 flow [2021-10-04 18:39:20,963 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 108 places, 106 transitions, 236 flow [2021-10-04 18:39:20,965 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 108 places, 106 transitions, 236 flow [2021-10-04 18:39:21,030 INFO L129 PetriNetUnfolder]: 8/103 cut-off events. [2021-10-04 18:39:21,031 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-10-04 18:39:21,037 INFO L84 FinitePrefix]: Finished finitePrefix Result has 116 conditions, 103 events. 8/103 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 97 event pairs, 0 based on Foata normal form. 0/94 useless extension candidates. Maximal degree in co-relation 62. Up to 2 conditions per place. [2021-10-04 18:39:21,042 INFO L116 LiptonReduction]: Number of co-enabled transitions 1728 [2021-10-04 18:39:24,407 INFO L131 LiptonReduction]: Checked pairs total: 1811 [2021-10-04 18:39:24,407 INFO L133 LiptonReduction]: Total number of compositions: 109 [2021-10-04 18:39:24,419 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 30 places, 20 transitions, 64 flow [2021-10-04 18:39:24,431 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 44 states, 43 states have (on average 1.8604651162790697) internal successors, (80), 43 states have internal predecessors, (80), 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) [2021-10-04 18:39:24,434 INFO L276 IsEmpty]: Start isEmpty. Operand has 44 states, 43 states have (on average 1.8604651162790697) internal successors, (80), 43 states have internal predecessors, (80), 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) [2021-10-04 18:39:24,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-04 18:39:24,441 INFO L504 BasicCegarLoop]: Found error trace [2021-10-04 18:39:24,441 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-04 18:39:24,442 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-04 18:39:24,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-04 18:39:24,448 INFO L82 PathProgramCache]: Analyzing trace with hash -1344579908, now seen corresponding path program 1 times [2021-10-04 18:39:24,457 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-04 18:39:24,458 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985769007] [2021-10-04 18:39:24,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-04 18:39:24,460 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-04 18:39:24,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-04 18:39:25,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-04 18:39:25,445 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-04 18:39:25,445 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985769007] [2021-10-04 18:39:25,446 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985769007] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-04 18:39:25,447 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-04 18:39:25,447 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-04 18:39:25,449 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536498759] [2021-10-04 18:39:25,454 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-04 18:39:25,454 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-04 18:39:25,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-04 18:39:25,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-04 18:39:25,473 INFO L87 Difference]: Start difference. First operand has 44 states, 43 states have (on average 1.8604651162790697) internal successors, (80), 43 states have internal predecessors, (80), 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) Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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) [2021-10-04 18:39:25,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-04 18:39:25,897 INFO L93 Difference]: Finished difference Result 67 states and 106 transitions. [2021-10-04 18:39:25,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-04 18:39:25,899 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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) Word has length 16 [2021-10-04 18:39:25,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-04 18:39:25,914 INFO L225 Difference]: With dead ends: 67 [2021-10-04 18:39:25,915 INFO L226 Difference]: Without dead ends: 52 [2021-10-04 18:39:25,916 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 457.0ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-04 18:39:25,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-10-04 18:39:25,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 44. [2021-10-04 18:39:25,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.7209302325581395) internal successors, (74), 43 states have internal predecessors, (74), 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) [2021-10-04 18:39:25,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 74 transitions. [2021-10-04 18:39:25,956 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 74 transitions. Word has length 16 [2021-10-04 18:39:25,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-04 18:39:25,956 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 74 transitions. [2021-10-04 18:39:25,957 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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) [2021-10-04 18:39:25,957 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 74 transitions. [2021-10-04 18:39:25,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-04 18:39:25,958 INFO L504 BasicCegarLoop]: Found error trace [2021-10-04 18:39:25,959 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-04 18:39:25,959 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-04 18:39:25,959 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-04 18:39:25,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-04 18:39:25,961 INFO L82 PathProgramCache]: Analyzing trace with hash -830195432, now seen corresponding path program 2 times [2021-10-04 18:39:25,961 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-04 18:39:25,961 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87128631] [2021-10-04 18:39:25,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-04 18:39:25,962 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-04 18:39:26,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-04 18:39:26,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-04 18:39:26,330 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-04 18:39:26,330 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87128631] [2021-10-04 18:39:26,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87128631] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-04 18:39:26,332 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-04 18:39:26,332 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-04 18:39:26,332 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470644866] [2021-10-04 18:39:26,333 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-04 18:39:26,334 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-04 18:39:26,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-04 18:39:26,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-04 18:39:26,337 INFO L87 Difference]: Start difference. First operand 44 states and 74 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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) [2021-10-04 18:39:26,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-04 18:39:26,530 INFO L93 Difference]: Finished difference Result 63 states and 94 transitions. [2021-10-04 18:39:26,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-04 18:39:26,531 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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) Word has length 16 [2021-10-04 18:39:26,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-04 18:39:26,532 INFO L225 Difference]: With dead ends: 63 [2021-10-04 18:39:26,532 INFO L226 Difference]: Without dead ends: 44 [2021-10-04 18:39:26,533 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 213.8ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-04 18:39:26,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-10-04 18:39:26,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 36. [2021-10-04 18:39:26,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.6285714285714286) internal successors, (57), 35 states have internal predecessors, (57), 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) [2021-10-04 18:39:26,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 57 transitions. [2021-10-04 18:39:26,540 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 57 transitions. Word has length 16 [2021-10-04 18:39:26,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-04 18:39:26,541 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 57 transitions. [2021-10-04 18:39:26,541 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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) [2021-10-04 18:39:26,542 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 57 transitions. [2021-10-04 18:39:26,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-04 18:39:26,543 INFO L504 BasicCegarLoop]: Found error trace [2021-10-04 18:39:26,543 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-04 18:39:26,543 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-04 18:39:26,544 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-04 18:39:26,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-04 18:39:26,544 INFO L82 PathProgramCache]: Analyzing trace with hash 2108734152, now seen corresponding path program 3 times [2021-10-04 18:39:26,545 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-04 18:39:26,545 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33603399] [2021-10-04 18:39:26,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-04 18:39:26,546 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-04 18:39:26,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-04 18:39:27,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-04 18:39:27,035 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-04 18:39:27,036 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33603399] [2021-10-04 18:39:27,036 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33603399] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-04 18:39:27,037 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-04 18:39:27,037 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-04 18:39:27,037 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296620330] [2021-10-04 18:39:27,038 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-04 18:39:27,038 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-04 18:39:27,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-04 18:39:27,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-04 18:39:27,040 INFO L87 Difference]: Start difference. First operand 36 states and 57 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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) [2021-10-04 18:39:27,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-04 18:39:27,432 INFO L93 Difference]: Finished difference Result 51 states and 70 transitions. [2021-10-04 18:39:27,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-04 18:39:27,433 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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) Word has length 16 [2021-10-04 18:39:27,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-04 18:39:27,434 INFO L225 Difference]: With dead ends: 51 [2021-10-04 18:39:27,435 INFO L226 Difference]: Without dead ends: 36 [2021-10-04 18:39:27,435 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 429.9ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-04 18:39:27,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-10-04 18:39:27,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 28. [2021-10-04 18:39:27,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.4814814814814814) internal successors, (40), 27 states have internal predecessors, (40), 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) [2021-10-04 18:39:27,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 40 transitions. [2021-10-04 18:39:27,440 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 40 transitions. Word has length 16 [2021-10-04 18:39:27,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-04 18:39:27,441 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 40 transitions. [2021-10-04 18:39:27,441 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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) [2021-10-04 18:39:27,442 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 40 transitions. [2021-10-04 18:39:27,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-04 18:39:27,442 INFO L504 BasicCegarLoop]: Found error trace [2021-10-04 18:39:27,443 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-04 18:39:27,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-04 18:39:27,443 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-04 18:39:27,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-04 18:39:27,444 INFO L82 PathProgramCache]: Analyzing trace with hash -161437464, now seen corresponding path program 4 times [2021-10-04 18:39:27,445 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-04 18:39:27,445 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572617106] [2021-10-04 18:39:27,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-04 18:39:27,445 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-04 18:39:27,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-04 18:39:27,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-04 18:39:27,999 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-04 18:39:27,999 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572617106] [2021-10-04 18:39:28,000 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572617106] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-04 18:39:28,000 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-04 18:39:28,000 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-04 18:39:28,001 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871514227] [2021-10-04 18:39:28,001 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-04 18:39:28,001 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-04 18:39:28,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-04 18:39:28,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-04 18:39:28,003 INFO L87 Difference]: Start difference. First operand 28 states and 40 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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) [2021-10-04 18:39:28,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-04 18:39:28,690 INFO L93 Difference]: Finished difference Result 37 states and 49 transitions. [2021-10-04 18:39:28,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-04 18:39:28,691 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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) Word has length 16 [2021-10-04 18:39:28,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-04 18:39:28,692 INFO L225 Difference]: With dead ends: 37 [2021-10-04 18:39:28,692 INFO L226 Difference]: Without dead ends: 24 [2021-10-04 18:39:28,693 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 757.0ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-04 18:39:28,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-10-04 18:39:28,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2021-10-04 18:39:28,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.3478260869565217) internal successors, (31), 23 states have internal predecessors, (31), 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) [2021-10-04 18:39:28,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 31 transitions. [2021-10-04 18:39:28,697 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 31 transitions. Word has length 16 [2021-10-04 18:39:28,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-04 18:39:28,697 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 31 transitions. [2021-10-04 18:39:28,698 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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) [2021-10-04 18:39:28,698 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 31 transitions. [2021-10-04 18:39:28,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-04 18:39:28,699 INFO L504 BasicCegarLoop]: Found error trace [2021-10-04 18:39:28,699 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-04 18:39:28,699 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-04 18:39:28,699 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-04 18:39:28,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-04 18:39:28,700 INFO L82 PathProgramCache]: Analyzing trace with hash 1410174408, now seen corresponding path program 5 times [2021-10-04 18:39:28,700 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-04 18:39:28,701 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314298573] [2021-10-04 18:39:28,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-04 18:39:28,701 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-04 18:39:28,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-04 18:39:29,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-04 18:39:29,087 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-04 18:39:29,087 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314298573] [2021-10-04 18:39:29,087 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314298573] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-04 18:39:29,088 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-04 18:39:29,088 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-04 18:39:29,089 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475065440] [2021-10-04 18:39:29,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-04 18:39:29,090 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-04 18:39:29,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-04 18:39:29,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-04 18:39:29,092 INFO L87 Difference]: Start difference. First operand 24 states and 31 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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) [2021-10-04 18:39:29,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-04 18:39:29,481 INFO L93 Difference]: Finished difference Result 31 states and 37 transitions. [2021-10-04 18:39:29,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-04 18:39:29,482 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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) Word has length 16 [2021-10-04 18:39:29,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-04 18:39:29,483 INFO L225 Difference]: With dead ends: 31 [2021-10-04 18:39:29,483 INFO L226 Difference]: Without dead ends: 20 [2021-10-04 18:39:29,483 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 457.9ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-04 18:39:29,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-10-04 18:39:29,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2021-10-04 18:39:29,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 19 states have internal predecessors, (22), 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) [2021-10-04 18:39:29,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2021-10-04 18:39:29,487 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 16 [2021-10-04 18:39:29,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-04 18:39:29,487 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2021-10-04 18:39:29,488 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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) [2021-10-04 18:39:29,488 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2021-10-04 18:39:29,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-04 18:39:29,489 INFO L504 BasicCegarLoop]: Found error trace [2021-10-04 18:39:29,489 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-04 18:39:29,489 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-04 18:39:29,490 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-04 18:39:29,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-04 18:39:29,490 INFO L82 PathProgramCache]: Analyzing trace with hash -1395387892, now seen corresponding path program 6 times [2021-10-04 18:39:29,491 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-04 18:39:29,491 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065166784] [2021-10-04 18:39:29,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-04 18:39:29,491 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-04 18:39:29,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-04 18:39:29,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-04 18:39:29,966 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-04 18:39:29,969 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065166784] [2021-10-04 18:39:29,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065166784] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-04 18:39:29,969 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-04 18:39:29,969 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-04 18:39:29,970 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688511699] [2021-10-04 18:39:29,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-04 18:39:29,970 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-04 18:39:29,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-04 18:39:29,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-04 18:39:29,971 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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) [2021-10-04 18:39:30,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-04 18:39:30,233 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2021-10-04 18:39:30,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-04 18:39:30,234 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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) Word has length 16 [2021-10-04 18:39:30,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-04 18:39:30,234 INFO L225 Difference]: With dead ends: 19 [2021-10-04 18:39:30,234 INFO L226 Difference]: Without dead ends: 0 [2021-10-04 18:39:30,234 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 320.9ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-04 18:39:30,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-04 18:39:30,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-04 18:39:30,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2021-10-04 18:39:30,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-04 18:39:30,235 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2021-10-04 18:39:30,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-04 18:39:30,236 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-04 18:39:30,236 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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) [2021-10-04 18:39:30,236 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-04 18:39:30,236 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-04 18:39:30,238 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-04 18:39:30,239 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-04 18:39:30,239 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-04 18:39:30,239 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-04 18:39:30,240 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-04 18:39:30,245 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-04 18:39:30,245 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-04 18:39:30,247 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.10 06:39:30 BasicIcfg [2021-10-04 18:39:30,247 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-04 18:39:30,248 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-04 18:39:30,248 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-04 18:39:30,248 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-04 18:39:30,249 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.10 06:39:20" (3/4) ... [2021-10-04 18:39:30,253 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-04 18:39:30,260 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2021-10-04 18:39:30,261 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2021-10-04 18:39:30,261 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2021-10-04 18:39:30,266 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2021-10-04 18:39:30,266 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-10-04 18:39:30,267 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-04 18:39:30,311 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-10-04 18:39:30,315 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-04 18:39:30,318 INFO L168 Benchmark]: Toolchain (without parser) took 10536.06 ms. Allocated memory was 48.2 MB in the beginning and 111.1 MB in the end (delta: 62.9 MB). Free memory was 24.1 MB in the beginning and 79.5 MB in the end (delta: -55.4 MB). Peak memory consumption was 10.7 MB. Max. memory is 16.1 GB. [2021-10-04 18:39:30,320 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 48.2 MB. Free memory was 31.0 MB in the beginning and 31.0 MB in the end (delta: 33.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-04 18:39:30,321 INFO L168 Benchmark]: CACSL2BoogieTranslator took 360.51 ms. Allocated memory was 48.2 MB in the beginning and 62.9 MB in the end (delta: 14.7 MB). Free memory was 23.8 MB in the beginning and 39.7 MB in the end (delta: -15.9 MB). Peak memory consumption was 3.3 MB. Max. memory is 16.1 GB. [2021-10-04 18:39:30,323 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.47 ms. Allocated memory is still 62.9 MB. Free memory was 39.7 MB in the beginning and 38.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-04 18:39:30,324 INFO L168 Benchmark]: Boogie Preprocessor took 27.83 ms. Allocated memory is still 62.9 MB. Free memory was 38.2 MB in the beginning and 37.0 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-04 18:39:30,324 INFO L168 Benchmark]: RCFGBuilder took 462.39 ms. Allocated memory is still 62.9 MB. Free memory was 37.0 MB in the beginning and 40.3 MB in the end (delta: -3.3 MB). Peak memory consumption was 10.2 MB. Max. memory is 16.1 GB. [2021-10-04 18:39:30,328 INFO L168 Benchmark]: TraceAbstraction took 9559.78 ms. Allocated memory was 62.9 MB in the beginning and 111.1 MB in the end (delta: 48.2 MB). Free memory was 39.8 MB in the beginning and 82.6 MB in the end (delta: -42.9 MB). Peak memory consumption was 3.5 MB. Max. memory is 16.1 GB. [2021-10-04 18:39:30,330 INFO L168 Benchmark]: Witness Printer took 67.20 ms. Allocated memory is still 111.1 MB. Free memory was 82.6 MB in the beginning and 79.5 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-04 18:39:30,335 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 48.2 MB. Free memory was 31.0 MB in the beginning and 31.0 MB in the end (delta: 33.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 360.51 ms. Allocated memory was 48.2 MB in the beginning and 62.9 MB in the end (delta: 14.7 MB). Free memory was 23.8 MB in the beginning and 39.7 MB in the end (delta: -15.9 MB). Peak memory consumption was 3.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 45.47 ms. Allocated memory is still 62.9 MB. Free memory was 39.7 MB in the beginning and 38.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 27.83 ms. Allocated memory is still 62.9 MB. Free memory was 38.2 MB in the beginning and 37.0 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 462.39 ms. Allocated memory is still 62.9 MB. Free memory was 37.0 MB in the beginning and 40.3 MB in the end (delta: -3.3 MB). Peak memory consumption was 10.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 9559.78 ms. Allocated memory was 62.9 MB in the beginning and 111.1 MB in the end (delta: 48.2 MB). Free memory was 39.8 MB in the beginning and 82.6 MB in the end (delta: -42.9 MB). Peak memory consumption was 3.5 MB. Max. memory is 16.1 GB. * Witness Printer took 67.20 ms. Allocated memory is still 111.1 MB. Free memory was 82.6 MB in the beginning and 79.5 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3445.2ms, 108 PlacesBefore, 30 PlacesAfterwards, 106 TransitionsBefore, 20 TransitionsAfterwards, 1728 CoEnabledTransitionPairs, 6 FixpointIterations, 42 TrivialSequentialCompositions, 36 ConcurrentSequentialCompositions, 3 TrivialYvCompositions, 20 ConcurrentYvCompositions, 8 ChoiceCompositions, 109 TotalNumberOfCompositions, 1811 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1811, positive: 1811, positive conditional: 0, positive unconditional: 1811, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1414, positive: 1414, positive conditional: 0, positive unconditional: 1414, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1414, positive: 1414, positive conditional: 0, positive unconditional: 1414, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1811, positive: 397, positive conditional: 0, positive unconditional: 397, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 1414, unknown conditional: 0, unknown unconditional: 1414] , Statistics on independence cache: Total cache size (in pairs): 30, Positive cache size: 30, Positive conditional cache size: 0, Positive unconditional cache size: 30, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 50]: 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, 135 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 9345.4ms, OverallIterations: 6, TraceHistogramMax: 1, EmptinessCheckTime: 13.7ms, AutomataDifference: 2405.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 3521.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 136 SDtfs, 178 SDslu, 167 SDs, 0 SdLazy, 93 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 170.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 40 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 2636.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred in iteration=0, InterpolantAutomatonStates: 36, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 42.6ms AutomataMinimizationTime, 6 MinimizatonAttempts, 24 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 20.9ms SsaConstructionTime, 428.6ms SatisfiabilityAnalysisTime, 2706.0ms InterpolantComputationTime, 96 NumberOfCodeBlocks, 96 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 90 ConstructedInterpolants, 0 QuantifiedInterpolants, 3310 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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! [2021-10-04 18:39:30,390 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...