./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/popl20-simple-array-sum.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c503be2a 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/popl20-simple-array-sum.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 47ce31104b9946da66b850f3990d7dc0a7e46191 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-c503be2 [2021-10-13 18:35:22,933 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 18:35:22,936 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 18:35:22,968 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 18:35:22,969 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 18:35:22,971 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 18:35:22,972 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 18:35:22,975 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 18:35:22,977 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 18:35:22,978 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 18:35:22,979 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 18:35:22,980 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 18:35:22,981 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 18:35:22,982 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 18:35:22,983 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 18:35:22,985 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 18:35:22,986 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 18:35:22,987 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 18:35:22,989 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 18:35:22,991 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 18:35:22,993 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 18:35:22,994 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 18:35:22,996 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 18:35:22,997 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 18:35:23,000 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 18:35:23,000 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 18:35:23,001 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 18:35:23,002 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 18:35:23,002 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 18:35:23,004 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 18:35:23,004 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 18:35:23,005 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 18:35:23,006 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 18:35:23,007 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 18:35:23,008 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 18:35:23,008 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 18:35:23,009 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 18:35:23,010 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 18:35:23,010 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 18:35:23,011 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 18:35:23,012 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 18:35:23,015 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-13 18:35:23,055 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 18:35:23,055 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 18:35:23,056 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 18:35:23,056 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 18:35:23,058 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 18:35:23,059 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 18:35:23,059 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 18:35:23,059 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 18:35:23,060 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 18:35:23,060 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 18:35:23,061 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 18:35:23,061 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 18:35:23,061 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 18:35:23,062 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 18:35:23,062 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 18:35:23,062 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 18:35:23,062 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 18:35:23,063 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 18:35:23,063 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 18:35:23,063 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 18:35:23,063 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 18:35:23,063 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 18:35:23,064 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 18:35:23,064 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 18:35:23,064 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 18:35:23,064 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 18:35:23,065 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-13 18:35:23,065 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 18:35:23,065 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 18:35:23,065 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 18:35:23,071 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 47ce31104b9946da66b850f3990d7dc0a7e46191 [2021-10-13 18:35:23,439 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 18:35:23,467 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 18:35:23,471 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 18:35:23,472 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 18:35:23,473 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 18:35:23,474 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-simple-array-sum.wvr.c [2021-10-13 18:35:23,556 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b9978af95/7a95a904de414f23b5f0db1ccc8efb42/FLAG6de27dcc1 [2021-10-13 18:35:24,201 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 18:35:24,202 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/popl20-simple-array-sum.wvr.c [2021-10-13 18:35:24,213 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b9978af95/7a95a904de414f23b5f0db1ccc8efb42/FLAG6de27dcc1 [2021-10-13 18:35:24,548 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b9978af95/7a95a904de414f23b5f0db1ccc8efb42 [2021-10-13 18:35:24,551 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 18:35:24,558 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 18:35:24,560 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 18:35:24,560 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 18:35:24,564 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 18:35:24,565 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:35:24" (1/1) ... [2021-10-13 18:35:24,566 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4732ce8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:35:24, skipping insertion in model container [2021-10-13 18:35:24,567 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:35:24" (1/1) ... [2021-10-13 18:35:24,575 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 18:35:24,595 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 18:35:24,778 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/popl20-simple-array-sum.wvr.c[2423,2436] [2021-10-13 18:35:24,788 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 18:35:24,798 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 18:35:24,824 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/popl20-simple-array-sum.wvr.c[2423,2436] [2021-10-13 18:35:24,829 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 18:35:24,847 INFO L208 MainTranslator]: Completed translation [2021-10-13 18:35:24,848 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:35:24 WrapperNode [2021-10-13 18:35:24,849 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 18:35:24,850 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 18:35:24,850 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 18:35:24,851 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 18:35:24,860 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:35:24" (1/1) ... [2021-10-13 18:35:24,872 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:35:24" (1/1) ... [2021-10-13 18:35:24,902 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 18:35:24,903 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 18:35:24,903 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 18:35:24,904 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 18:35:24,915 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:35:24" (1/1) ... [2021-10-13 18:35:24,916 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:35:24" (1/1) ... [2021-10-13 18:35:24,919 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:35:24" (1/1) ... [2021-10-13 18:35:24,920 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:35:24" (1/1) ... [2021-10-13 18:35:24,929 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:35:24" (1/1) ... [2021-10-13 18:35:24,935 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:35:24" (1/1) ... [2021-10-13 18:35:24,937 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:35:24" (1/1) ... [2021-10-13 18:35:24,941 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 18:35:24,943 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 18:35:24,943 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 18:35:24,943 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 18:35:24,944 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:35:24" (1/1) ... [2021-10-13 18:35:24,954 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 18:35:24,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 18:35:25,003 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) [2021-10-13 18:35:25,027 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 [2021-10-13 18:35:25,073 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 18:35:25,073 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-13 18:35:25,075 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-13 18:35:25,075 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-13 18:35:25,075 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-13 18:35:25,075 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-13 18:35:25,075 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-13 18:35:25,076 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-10-13 18:35:25,076 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-10-13 18:35:25,076 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 18:35:25,076 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-13 18:35:25,076 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 18:35:25,077 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 18:35:25,077 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 18:35:25,079 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-13 18:35:25,599 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 18:35:25,599 INFO L299 CfgBuilder]: Removed 23 assume(true) statements. [2021-10-13 18:35:25,602 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:35:25 BoogieIcfgContainer [2021-10-13 18:35:25,602 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 18:35:25,604 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 18:35:25,604 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 18:35:25,611 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 18:35:25,611 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 06:35:24" (1/3) ... [2021-10-13 18:35:25,612 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f5e9778 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:35:25, skipping insertion in model container [2021-10-13 18:35:25,612 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:35:24" (2/3) ... [2021-10-13 18:35:25,613 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f5e9778 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:35:25, skipping insertion in model container [2021-10-13 18:35:25,613 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:35:25" (3/3) ... [2021-10-13 18:35:25,620 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-simple-array-sum.wvr.c [2021-10-13 18:35:25,626 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-13 18:35:25,626 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 18:35:25,626 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 18:35:25,626 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-13 18:35:25,713 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:35:25,714 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:35:25,714 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:35:25,715 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:35:25,715 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:35:25,716 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:35:25,716 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:35:25,716 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:35:25,729 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:35:25,729 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:35:25,732 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:35:25,732 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:35:25,733 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:35:25,733 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:35:25,733 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:35:25,734 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:35:25,735 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:35:25,735 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:35:25,736 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:35:25,736 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:35:25,736 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:35:25,736 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:35:25,737 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:35:25,737 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:35:25,738 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:35:25,738 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:35:25,738 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:35:25,739 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:35:25,740 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:35:25,741 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:35:25,741 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:35:25,743 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:35:25,743 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:35:25,744 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:35:25,744 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:35:25,744 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:35:25,745 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:35:25,745 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:35:25,745 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:35:25,745 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:35:25,746 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:35:25,746 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:35:25,746 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:35:25,746 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:35:25,747 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:35:25,747 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:35:25,747 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:35:25,748 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:35:25,748 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:35:25,748 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:35:25,749 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:35:25,749 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:35:25,751 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:35:25,751 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:35:25,752 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:35:25,753 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:35:25,753 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:35:25,753 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:35:25,753 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:35:25,754 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:35:25,754 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:35:25,754 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:35:25,758 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:35:25,758 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:35:25,758 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:35:25,758 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:35:25,759 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:35:25,759 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:35:25,759 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:35:25,759 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:35:25,759 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:35:25,760 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:35:25,760 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:35:25,760 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:35:25,760 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:35:25,760 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:35:25,761 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:35:25,761 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:35:25,761 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:35:25,761 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:35:25,761 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:35:25,762 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:35:25,762 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:35:25,762 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:35:25,762 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:35:25,762 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:35:25,762 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:35:25,763 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:35:25,766 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:35:25,766 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:35:25,767 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:35:25,767 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:35:25,773 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:35:25,774 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:35:25,775 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:35:25,776 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:35:25,776 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:35:25,791 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:35:25,791 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:35:25,791 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:35:25,792 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:35:25,792 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:35:25,794 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:35:25,795 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:35:25,798 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:35:25,798 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:35:25,799 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 18:35:25,821 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-10-13 18:35:25,902 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 18:35:25,915 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 [2021-10-13 18:35:25,916 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-10-13 18:35:25,948 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-13 18:35:25,973 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 165 places, 171 transitions, 366 flow [2021-10-13 18:35:25,977 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 165 places, 171 transitions, 366 flow [2021-10-13 18:35:25,980 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 165 places, 171 transitions, 366 flow [2021-10-13 18:35:26,143 INFO L129 PetriNetUnfolder]: 16/168 cut-off events. [2021-10-13 18:35:26,143 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-10-13 18:35:26,149 INFO L84 FinitePrefix]: Finished finitePrefix Result has 181 conditions, 168 events. 16/168 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 124 event pairs, 0 based on Foata normal form. 0/151 useless extension candidates. Maximal degree in co-relation 129. Up to 3 conditions per place. [2021-10-13 18:35:26,157 INFO L116 LiptonReduction]: Number of co-enabled transitions 1936 [2021-10-13 18:35:32,909 INFO L131 LiptonReduction]: Checked pairs total: 2894 [2021-10-13 18:35:32,909 INFO L133 LiptonReduction]: Total number of compositions: 163 [2021-10-13 18:35:32,918 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 38 places, 34 transitions, 92 flow [2021-10-13 18:35:32,950 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 210 states, 209 states have (on average 3.38755980861244) internal successors, (708), 209 states have internal predecessors, (708), 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) [2021-10-13 18:35:32,954 INFO L276 IsEmpty]: Start isEmpty. Operand has 210 states, 209 states have (on average 3.38755980861244) internal successors, (708), 209 states have internal predecessors, (708), 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) [2021-10-13 18:35:32,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-13 18:35:32,977 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 18:35:32,977 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 18:35:32,978 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-13 18:35:32,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 18:35:32,984 INFO L82 PathProgramCache]: Analyzing trace with hash -1425720937, now seen corresponding path program 1 times [2021-10-13 18:35:32,994 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 18:35:32,995 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290160970] [2021-10-13 18:35:32,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 18:35:32,996 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 18:35:33,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 18:35:33,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 18:35:33,693 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 18:35:33,693 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290160970] [2021-10-13 18:35:33,694 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290160970] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 18:35:33,694 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 18:35:33,695 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 18:35:33,697 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749275951] [2021-10-13 18:35:33,702 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 18:35:33,703 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 18:35:33,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 18:35:33,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 18:35:33,727 INFO L87 Difference]: Start difference. First operand has 210 states, 209 states have (on average 3.38755980861244) internal successors, (708), 209 states have internal predecessors, (708), 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 4 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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) [2021-10-13 18:35:33,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 18:35:33,879 INFO L93 Difference]: Finished difference Result 418 states and 1414 transitions. [2021-10-13 18:35:33,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 18:35:33,881 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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 21 [2021-10-13 18:35:33,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 18:35:33,911 INFO L225 Difference]: With dead ends: 418 [2021-10-13 18:35:33,912 INFO L226 Difference]: Without dead ends: 395 [2021-10-13 18:35:33,913 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 43.1ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 18:35:33,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2021-10-13 18:35:33,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 353. [2021-10-13 18:35:34,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353 states, 352 states have (on average 3.4232954545454546) internal successors, (1205), 352 states have internal predecessors, (1205), 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) [2021-10-13 18:35:34,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 1205 transitions. [2021-10-13 18:35:34,006 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 1205 transitions. Word has length 21 [2021-10-13 18:35:34,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 18:35:34,008 INFO L470 AbstractCegarLoop]: Abstraction has 353 states and 1205 transitions. [2021-10-13 18:35:34,008 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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) [2021-10-13 18:35:34,008 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 1205 transitions. [2021-10-13 18:35:34,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 18:35:34,016 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 18:35:34,016 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 18:35:34,017 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 18:35:34,017 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-13 18:35:34,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 18:35:34,018 INFO L82 PathProgramCache]: Analyzing trace with hash 822789419, now seen corresponding path program 1 times [2021-10-13 18:35:34,018 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 18:35:34,018 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302691747] [2021-10-13 18:35:34,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 18:35:34,019 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 18:35:34,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 18:35:34,089 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 18:35:34,090 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 18:35:34,090 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302691747] [2021-10-13 18:35:34,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302691747] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 18:35:34,091 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 18:35:34,091 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 18:35:34,092 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449779440] [2021-10-13 18:35:34,093 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 18:35:34,093 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 18:35:34,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 18:35:34,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 18:35:34,094 INFO L87 Difference]: Start difference. First operand 353 states and 1205 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 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) [2021-10-13 18:35:34,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 18:35:34,205 INFO L93 Difference]: Finished difference Result 561 states and 1816 transitions. [2021-10-13 18:35:34,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 18:35:34,206 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 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) Word has length 22 [2021-10-13 18:35:34,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 18:35:34,215 INFO L225 Difference]: With dead ends: 561 [2021-10-13 18:35:34,215 INFO L226 Difference]: Without dead ends: 541 [2021-10-13 18:35:34,216 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20.0ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-13 18:35:34,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2021-10-13 18:35:34,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 439. [2021-10-13 18:35:34,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 439 states, 438 states have (on average 3.365296803652968) internal successors, (1474), 438 states have internal predecessors, (1474), 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) [2021-10-13 18:35:34,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 1474 transitions. [2021-10-13 18:35:34,260 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 1474 transitions. Word has length 22 [2021-10-13 18:35:34,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 18:35:34,261 INFO L470 AbstractCegarLoop]: Abstraction has 439 states and 1474 transitions. [2021-10-13 18:35:34,261 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 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) [2021-10-13 18:35:34,261 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 1474 transitions. [2021-10-13 18:35:34,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 18:35:34,272 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 18:35:34,272 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 18:35:34,272 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-13 18:35:34,273 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-13 18:35:34,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 18:35:34,273 INFO L82 PathProgramCache]: Analyzing trace with hash 2099785473, now seen corresponding path program 1 times [2021-10-13 18:35:34,274 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 18:35:34,274 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670911752] [2021-10-13 18:35:34,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 18:35:34,275 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 18:35:34,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 18:35:34,397 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 18:35:34,398 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 18:35:34,399 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670911752] [2021-10-13 18:35:34,401 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670911752] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 18:35:34,402 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1592787213] [2021-10-13 18:35:34,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 18:35:34,402 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 18:35:34,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 18:35:34,410 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 18:35:34,436 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-13 18:35:34,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 18:35:34,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-13 18:35:34,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 18:35:34,649 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 18:35:34,651 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1592787213] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 18:35:34,651 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 18:35:34,652 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-10-13 18:35:34,652 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188905890] [2021-10-13 18:35:34,653 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 18:35:34,655 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 18:35:34,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 18:35:34,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-13 18:35:34,656 INFO L87 Difference]: Start difference. First operand 439 states and 1474 transitions. Second operand has 8 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 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) [2021-10-13 18:35:34,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 18:35:34,811 INFO L93 Difference]: Finished difference Result 644 states and 2158 transitions. [2021-10-13 18:35:34,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 18:35:34,812 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 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 22 [2021-10-13 18:35:34,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 18:35:34,819 INFO L225 Difference]: With dead ends: 644 [2021-10-13 18:35:34,819 INFO L226 Difference]: Without dead ends: 644 [2021-10-13 18:35:34,819 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 49.9ms TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-10-13 18:35:34,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 644 states. [2021-10-13 18:35:34,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 644 to 394. [2021-10-13 18:35:34,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 393 states have (on average 3.3944020356234095) internal successors, (1334), 393 states have internal predecessors, (1334), 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) [2021-10-13 18:35:34,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 1334 transitions. [2021-10-13 18:35:34,846 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 1334 transitions. Word has length 22 [2021-10-13 18:35:34,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 18:35:34,846 INFO L470 AbstractCegarLoop]: Abstraction has 394 states and 1334 transitions. [2021-10-13 18:35:34,847 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 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) [2021-10-13 18:35:34,847 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 1334 transitions. [2021-10-13 18:35:34,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-13 18:35:34,849 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 18:35:34,849 INFO L512 BasicCegarLoop]: 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] [2021-10-13 18:35:34,892 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-13 18:35:35,052 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 18:35:35,053 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-13 18:35:35,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 18:35:35,055 INFO L82 PathProgramCache]: Analyzing trace with hash -448337160, now seen corresponding path program 1 times [2021-10-13 18:35:35,055 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 18:35:35,056 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340170749] [2021-10-13 18:35:35,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 18:35:35,056 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 18:35:35,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 18:35:35,156 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 18:35:35,157 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 18:35:35,157 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340170749] [2021-10-13 18:35:35,158 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340170749] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 18:35:35,158 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 18:35:35,158 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 18:35:35,158 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662583633] [2021-10-13 18:35:35,159 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 18:35:35,159 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 18:35:35,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 18:35:35,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 18:35:35,163 INFO L87 Difference]: Start difference. First operand 394 states and 1334 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 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) [2021-10-13 18:35:35,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 18:35:35,205 INFO L93 Difference]: Finished difference Result 730 states and 2369 transitions. [2021-10-13 18:35:35,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 18:35:35,206 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 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 23 [2021-10-13 18:35:35,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 18:35:35,213 INFO L225 Difference]: With dead ends: 730 [2021-10-13 18:35:35,213 INFO L226 Difference]: Without dead ends: 694 [2021-10-13 18:35:35,214 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.4ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 18:35:35,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2021-10-13 18:35:35,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 548. [2021-10-13 18:35:35,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 548 states, 547 states have (on average 3.3546617915904937) internal successors, (1835), 547 states have internal predecessors, (1835), 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) [2021-10-13 18:35:35,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 548 states to 548 states and 1835 transitions. [2021-10-13 18:35:35,243 INFO L78 Accepts]: Start accepts. Automaton has 548 states and 1835 transitions. Word has length 23 [2021-10-13 18:35:35,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 18:35:35,244 INFO L470 AbstractCegarLoop]: Abstraction has 548 states and 1835 transitions. [2021-10-13 18:35:35,244 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 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) [2021-10-13 18:35:35,244 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states and 1835 transitions. [2021-10-13 18:35:35,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-13 18:35:35,248 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 18:35:35,248 INFO L512 BasicCegarLoop]: 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] [2021-10-13 18:35:35,249 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-13 18:35:35,249 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-13 18:35:35,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 18:35:35,250 INFO L82 PathProgramCache]: Analyzing trace with hash 1229985049, now seen corresponding path program 1 times [2021-10-13 18:35:35,250 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 18:35:35,250 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177903943] [2021-10-13 18:35:35,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 18:35:35,251 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 18:35:35,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 18:35:35,368 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 18:35:35,373 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 18:35:35,373 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177903943] [2021-10-13 18:35:35,374 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177903943] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 18:35:35,375 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [442187135] [2021-10-13 18:35:35,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 18:35:35,375 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 18:35:35,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 18:35:35,378 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 18:35:35,398 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-13 18:35:35,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 18:35:35,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 18:35:35,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 18:35:35,586 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 18:35:35,586 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [442187135] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 18:35:35,587 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 18:35:35,587 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 7 [2021-10-13 18:35:35,587 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917979180] [2021-10-13 18:35:35,588 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 18:35:35,588 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 18:35:35,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 18:35:35,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-13 18:35:35,589 INFO L87 Difference]: Start difference. First operand 548 states and 1835 transitions. Second operand has 8 states, 8 states have (on average 3.5) internal successors, (28), 7 states have internal predecessors, (28), 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) [2021-10-13 18:35:35,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 18:35:35,689 INFO L93 Difference]: Finished difference Result 862 states and 2845 transitions. [2021-10-13 18:35:35,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 18:35:35,689 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 7 states have internal predecessors, (28), 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 23 [2021-10-13 18:35:35,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 18:35:35,696 INFO L225 Difference]: With dead ends: 862 [2021-10-13 18:35:35,696 INFO L226 Difference]: Without dead ends: 696 [2021-10-13 18:35:35,697 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 51.2ms TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-10-13 18:35:35,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2021-10-13 18:35:35,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 622. [2021-10-13 18:35:35,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 622 states, 621 states have (on average 3.3768115942028984) internal successors, (2097), 621 states have internal predecessors, (2097), 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) [2021-10-13 18:35:35,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 622 states to 622 states and 2097 transitions. [2021-10-13 18:35:35,728 INFO L78 Accepts]: Start accepts. Automaton has 622 states and 2097 transitions. Word has length 23 [2021-10-13 18:35:35,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 18:35:35,728 INFO L470 AbstractCegarLoop]: Abstraction has 622 states and 2097 transitions. [2021-10-13 18:35:35,729 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 7 states have internal predecessors, (28), 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) [2021-10-13 18:35:35,729 INFO L276 IsEmpty]: Start isEmpty. Operand 622 states and 2097 transitions. [2021-10-13 18:35:35,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-13 18:35:35,732 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 18:35:35,732 INFO L512 BasicCegarLoop]: 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] [2021-10-13 18:35:35,769 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-13 18:35:35,950 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 18:35:35,951 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-13 18:35:35,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 18:35:35,952 INFO L82 PathProgramCache]: Analyzing trace with hash 1545296361, now seen corresponding path program 1 times [2021-10-13 18:35:35,953 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 18:35:35,953 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400039437] [2021-10-13 18:35:35,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 18:35:35,954 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 18:35:35,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 18:35:36,019 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-13 18:35:36,020 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 18:35:36,020 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400039437] [2021-10-13 18:35:36,021 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400039437] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 18:35:36,021 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1998512911] [2021-10-13 18:35:36,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 18:35:36,021 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 18:35:36,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 18:35:36,023 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 18:35:36,054 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-13 18:35:36,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 18:35:36,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 18:35:36,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 18:35:36,231 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-13 18:35:36,231 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1998512911] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 18:35:36,232 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 18:35:36,232 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 7 [2021-10-13 18:35:36,232 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280872649] [2021-10-13 18:35:36,233 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 18:35:36,233 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 18:35:36,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 18:35:36,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-13 18:35:36,234 INFO L87 Difference]: Start difference. First operand 622 states and 2097 transitions. Second operand has 8 states, 8 states have (on average 4.0) internal successors, (32), 7 states have internal predecessors, (32), 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) [2021-10-13 18:35:36,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 18:35:36,393 INFO L93 Difference]: Finished difference Result 954 states and 3227 transitions. [2021-10-13 18:35:36,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 18:35:36,394 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 7 states have internal predecessors, (32), 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 24 [2021-10-13 18:35:36,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 18:35:36,403 INFO L225 Difference]: With dead ends: 954 [2021-10-13 18:35:36,403 INFO L226 Difference]: Without dead ends: 900 [2021-10-13 18:35:36,403 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 61.7ms TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2021-10-13 18:35:36,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 900 states. [2021-10-13 18:35:36,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 900 to 520. [2021-10-13 18:35:36,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 520 states, 519 states have (on average 3.4161849710982657) internal successors, (1773), 519 states have internal predecessors, (1773), 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) [2021-10-13 18:35:36,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520 states to 520 states and 1773 transitions. [2021-10-13 18:35:36,432 INFO L78 Accepts]: Start accepts. Automaton has 520 states and 1773 transitions. Word has length 24 [2021-10-13 18:35:36,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 18:35:36,433 INFO L470 AbstractCegarLoop]: Abstraction has 520 states and 1773 transitions. [2021-10-13 18:35:36,433 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 7 states have internal predecessors, (32), 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) [2021-10-13 18:35:36,434 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 1773 transitions. [2021-10-13 18:35:36,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-13 18:35:36,436 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 18:35:36,437 INFO L512 BasicCegarLoop]: 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] [2021-10-13 18:35:36,478 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-13 18:35:36,650 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 18:35:36,651 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-13 18:35:36,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 18:35:36,652 INFO L82 PathProgramCache]: Analyzing trace with hash 1509475295, now seen corresponding path program 1 times [2021-10-13 18:35:36,653 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 18:35:36,653 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816763947] [2021-10-13 18:35:36,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 18:35:36,653 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 18:35:36,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 18:35:36,701 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 18:35:36,702 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 18:35:36,702 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816763947] [2021-10-13 18:35:36,702 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816763947] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 18:35:36,702 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 18:35:36,703 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 18:35:36,703 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068263669] [2021-10-13 18:35:36,703 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 18:35:36,704 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 18:35:36,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 18:35:36,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 18:35:36,707 INFO L87 Difference]: Start difference. First operand 520 states and 1773 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 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) [2021-10-13 18:35:36,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 18:35:36,784 INFO L93 Difference]: Finished difference Result 422 states and 1373 transitions. [2021-10-13 18:35:36,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 18:35:36,784 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 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 26 [2021-10-13 18:35:36,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 18:35:36,789 INFO L225 Difference]: With dead ends: 422 [2021-10-13 18:35:36,789 INFO L226 Difference]: Without dead ends: 370 [2021-10-13 18:35:36,790 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20.4ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-13 18:35:36,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2021-10-13 18:35:36,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 370. [2021-10-13 18:35:36,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 369 states have (on average 3.3875338753387534) internal successors, (1250), 369 states have internal predecessors, (1250), 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) [2021-10-13 18:35:36,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 1250 transitions. [2021-10-13 18:35:36,807 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 1250 transitions. Word has length 26 [2021-10-13 18:35:36,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 18:35:36,808 INFO L470 AbstractCegarLoop]: Abstraction has 370 states and 1250 transitions. [2021-10-13 18:35:36,808 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 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) [2021-10-13 18:35:36,809 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 1250 transitions. [2021-10-13 18:35:36,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-13 18:35:36,811 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 18:35:36,811 INFO L512 BasicCegarLoop]: 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] [2021-10-13 18:35:36,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-13 18:35:36,812 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-13 18:35:36,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 18:35:36,812 INFO L82 PathProgramCache]: Analyzing trace with hash 25921465, now seen corresponding path program 1 times [2021-10-13 18:35:36,812 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 18:35:36,813 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725525737] [2021-10-13 18:35:36,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 18:35:36,813 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 18:35:36,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 18:35:36,907 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-13 18:35:36,907 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 18:35:36,907 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725525737] [2021-10-13 18:35:36,908 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725525737] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 18:35:36,908 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1258044282] [2021-10-13 18:35:36,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 18:35:36,908 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 18:35:36,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 18:35:36,910 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 18:35:36,913 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-13 18:35:37,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 18:35:37,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 18:35:37,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 18:35:37,133 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 18:35:37,136 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1258044282] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 18:35:37,136 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-13 18:35:37,136 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 12 [2021-10-13 18:35:37,137 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254643425] [2021-10-13 18:35:37,138 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 18:35:37,138 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 18:35:37,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 18:35:37,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-10-13 18:35:37,140 INFO L87 Difference]: Start difference. First operand 370 states and 1250 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 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) [2021-10-13 18:35:37,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 18:35:37,189 INFO L93 Difference]: Finished difference Result 502 states and 1684 transitions. [2021-10-13 18:35:37,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 18:35:37,190 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 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 29 [2021-10-13 18:35:37,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 18:35:37,197 INFO L225 Difference]: With dead ends: 502 [2021-10-13 18:35:37,197 INFO L226 Difference]: Without dead ends: 490 [2021-10-13 18:35:37,198 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 57.9ms TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-10-13 18:35:37,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2021-10-13 18:35:37,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 400. [2021-10-13 18:35:37,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 399 states have (on average 3.388471177944862) internal successors, (1352), 399 states have internal predecessors, (1352), 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) [2021-10-13 18:35:37,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 1352 transitions. [2021-10-13 18:35:37,219 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 1352 transitions. Word has length 29 [2021-10-13 18:35:37,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 18:35:37,220 INFO L470 AbstractCegarLoop]: Abstraction has 400 states and 1352 transitions. [2021-10-13 18:35:37,220 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 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) [2021-10-13 18:35:37,220 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 1352 transitions. [2021-10-13 18:35:37,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-13 18:35:37,222 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 18:35:37,222 INFO L512 BasicCegarLoop]: 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] [2021-10-13 18:35:37,259 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-13 18:35:37,435 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 18:35:37,436 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-13 18:35:37,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 18:35:37,437 INFO L82 PathProgramCache]: Analyzing trace with hash -1547060665, now seen corresponding path program 2 times [2021-10-13 18:35:37,437 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 18:35:37,438 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883724589] [2021-10-13 18:35:37,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 18:35:37,438 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 18:35:37,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 18:35:37,526 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-13 18:35:37,526 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 18:35:37,527 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883724589] [2021-10-13 18:35:37,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883724589] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 18:35:37,527 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [434295383] [2021-10-13 18:35:37,527 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 18:35:37,527 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 18:35:37,528 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 18:35:37,528 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 18:35:37,554 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-13 18:35:37,643 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 18:35:37,643 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 18:35:37,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 18:35:37,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 18:35:37,732 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 18:35:37,733 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [434295383] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 18:35:37,733 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-13 18:35:37,733 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 12 [2021-10-13 18:35:37,733 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867181495] [2021-10-13 18:35:37,734 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 18:35:37,734 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 18:35:37,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 18:35:37,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-10-13 18:35:37,735 INFO L87 Difference]: Start difference. First operand 400 states and 1352 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 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) [2021-10-13 18:35:37,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 18:35:37,792 INFO L93 Difference]: Finished difference Result 576 states and 1920 transitions. [2021-10-13 18:35:37,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 18:35:37,793 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 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 29 [2021-10-13 18:35:37,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 18:35:37,798 INFO L225 Difference]: With dead ends: 576 [2021-10-13 18:35:37,798 INFO L226 Difference]: Without dead ends: 544 [2021-10-13 18:35:37,799 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 69.4ms TimeCoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-10-13 18:35:37,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 544 states. [2021-10-13 18:35:37,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 544 to 454. [2021-10-13 18:35:37,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 454 states, 453 states have (on average 3.368653421633554) internal successors, (1526), 453 states have internal predecessors, (1526), 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) [2021-10-13 18:35:37,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 454 states to 454 states and 1526 transitions. [2021-10-13 18:35:37,821 INFO L78 Accepts]: Start accepts. Automaton has 454 states and 1526 transitions. Word has length 29 [2021-10-13 18:35:37,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 18:35:37,821 INFO L470 AbstractCegarLoop]: Abstraction has 454 states and 1526 transitions. [2021-10-13 18:35:37,822 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 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) [2021-10-13 18:35:37,822 INFO L276 IsEmpty]: Start isEmpty. Operand 454 states and 1526 transitions. [2021-10-13 18:35:37,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-13 18:35:37,831 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 18:35:37,831 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 18:35:37,867 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-13 18:35:38,044 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 18:35:38,045 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-13 18:35:38,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 18:35:38,046 INFO L82 PathProgramCache]: Analyzing trace with hash 1715951556, now seen corresponding path program 3 times [2021-10-13 18:35:38,047 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 18:35:38,047 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449177304] [2021-10-13 18:35:38,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 18:35:38,047 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 18:35:38,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 18:35:38,123 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 18:35:38,123 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 18:35:38,123 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449177304] [2021-10-13 18:35:38,124 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449177304] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 18:35:38,124 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1701736842] [2021-10-13 18:35:38,124 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 18:35:38,124 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 18:35:38,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 18:35:38,126 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 18:35:38,154 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-13 18:35:38,358 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-13 18:35:38,359 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 18:35:38,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-13 18:35:38,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 18:35:38,530 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 18:35:38,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1701736842] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 18:35:38,530 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 18:35:38,530 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-10-13 18:35:38,531 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357239429] [2021-10-13 18:35:38,531 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 18:35:38,531 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 18:35:38,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 18:35:38,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-10-13 18:35:38,532 INFO L87 Difference]: Start difference. First operand 454 states and 1526 transitions. Second operand has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 10 states have internal predecessors, (49), 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) [2021-10-13 18:35:38,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 18:35:38,734 INFO L93 Difference]: Finished difference Result 607 states and 1982 transitions. [2021-10-13 18:35:38,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-13 18:35:38,734 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 10 states have internal predecessors, (49), 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 32 [2021-10-13 18:35:38,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 18:35:38,739 INFO L225 Difference]: With dead ends: 607 [2021-10-13 18:35:38,739 INFO L226 Difference]: Without dead ends: 456 [2021-10-13 18:35:38,740 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 100.7ms TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2021-10-13 18:35:38,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 456 states. [2021-10-13 18:35:38,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 456 to 456. [2021-10-13 18:35:38,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 456 states, 455 states have (on average 3.3582417582417583) internal successors, (1528), 455 states have internal predecessors, (1528), 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) [2021-10-13 18:35:38,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 1528 transitions. [2021-10-13 18:35:38,759 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 1528 transitions. Word has length 32 [2021-10-13 18:35:38,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 18:35:38,760 INFO L470 AbstractCegarLoop]: Abstraction has 456 states and 1528 transitions. [2021-10-13 18:35:38,760 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 10 states have internal predecessors, (49), 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) [2021-10-13 18:35:38,760 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 1528 transitions. [2021-10-13 18:35:38,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-13 18:35:38,763 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 18:35:38,763 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 18:35:38,803 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-13 18:35:38,976 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-10-13 18:35:38,977 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-13 18:35:38,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 18:35:38,978 INFO L82 PathProgramCache]: Analyzing trace with hash -1303075258, now seen corresponding path program 4 times [2021-10-13 18:35:38,978 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 18:35:38,978 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050680250] [2021-10-13 18:35:38,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 18:35:38,979 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 18:35:39,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 18:35:39,073 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-13 18:35:39,074 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 18:35:39,074 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050680250] [2021-10-13 18:35:39,074 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050680250] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 18:35:39,074 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1894649291] [2021-10-13 18:35:39,075 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 18:35:39,075 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 18:35:39,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 18:35:39,076 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 18:35:39,099 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-13 18:35:39,192 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 18:35:39,192 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 18:35:39,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 18:35:39,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 18:35:39,346 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-13 18:35:39,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1894649291] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 18:35:39,347 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 18:35:39,347 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-13 18:35:39,348 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750052714] [2021-10-13 18:35:39,348 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-13 18:35:39,348 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 18:35:39,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-13 18:35:39,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2021-10-13 18:35:39,350 INFO L87 Difference]: Start difference. First operand 456 states and 1528 transitions. Second operand has 13 states, 13 states have (on average 4.076923076923077) internal successors, (53), 13 states have internal predecessors, (53), 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) [2021-10-13 18:35:39,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 18:35:39,586 INFO L93 Difference]: Finished difference Result 716 states and 2440 transitions. [2021-10-13 18:35:39,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-13 18:35:39,586 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.076923076923077) internal successors, (53), 13 states have internal predecessors, (53), 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 34 [2021-10-13 18:35:39,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 18:35:39,593 INFO L225 Difference]: With dead ends: 716 [2021-10-13 18:35:39,593 INFO L226 Difference]: Without dead ends: 716 [2021-10-13 18:35:39,593 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 159.5ms TimeCoverageRelationStatistics Valid=133, Invalid=329, Unknown=0, NotChecked=0, Total=462 [2021-10-13 18:35:39,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 716 states. [2021-10-13 18:35:39,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 716 to 548. [2021-10-13 18:35:39,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 548 states, 547 states have (on average 3.3784277879341866) internal successors, (1848), 547 states have internal predecessors, (1848), 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) [2021-10-13 18:35:39,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 548 states to 548 states and 1848 transitions. [2021-10-13 18:35:39,618 INFO L78 Accepts]: Start accepts. Automaton has 548 states and 1848 transitions. Word has length 34 [2021-10-13 18:35:39,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 18:35:39,620 INFO L470 AbstractCegarLoop]: Abstraction has 548 states and 1848 transitions. [2021-10-13 18:35:39,620 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.076923076923077) internal successors, (53), 13 states have internal predecessors, (53), 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) [2021-10-13 18:35:39,620 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states and 1848 transitions. [2021-10-13 18:35:39,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-13 18:35:39,623 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 18:35:39,624 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 18:35:39,653 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-10-13 18:35:39,837 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 18:35:39,838 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-13 18:35:39,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 18:35:39,839 INFO L82 PathProgramCache]: Analyzing trace with hash 1434151954, now seen corresponding path program 5 times [2021-10-13 18:35:39,840 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 18:35:39,840 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839000466] [2021-10-13 18:35:39,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 18:35:39,841 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 18:35:39,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 18:35:39,951 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-13 18:35:39,952 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 18:35:39,952 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839000466] [2021-10-13 18:35:39,952 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839000466] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 18:35:39,952 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1821044892] [2021-10-13 18:35:39,953 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 18:35:39,953 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 18:35:39,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 18:35:39,954 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 18:35:39,963 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-10-13 18:35:40,073 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 18:35:40,073 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 18:35:40,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 18:35:40,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 18:35:40,169 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-13 18:35:40,169 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1821044892] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 18:35:40,170 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 18:35:40,170 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 6] total 11 [2021-10-13 18:35:40,170 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000231471] [2021-10-13 18:35:40,171 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 18:35:40,171 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 18:35:40,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 18:35:40,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-10-13 18:35:40,172 INFO L87 Difference]: Start difference. First operand 548 states and 1848 transitions. Second operand has 11 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 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) [2021-10-13 18:35:40,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 18:35:40,461 INFO L93 Difference]: Finished difference Result 642 states and 2210 transitions. [2021-10-13 18:35:40,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-13 18:35:40,462 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 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 35 [2021-10-13 18:35:40,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 18:35:40,463 INFO L225 Difference]: With dead ends: 642 [2021-10-13 18:35:40,463 INFO L226 Difference]: Without dead ends: 0 [2021-10-13 18:35:40,463 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 39 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 183.3ms TimeCoverageRelationStatistics Valid=168, Invalid=338, Unknown=0, NotChecked=0, Total=506 [2021-10-13 18:35:40,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-13 18:35:40,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-13 18:35:40,464 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) [2021-10-13 18:35:40,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-13 18:35:40,465 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 35 [2021-10-13 18:35:40,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 18:35:40,465 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 18:35:40,465 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 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) [2021-10-13 18:35:40,465 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-13 18:35:40,465 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-13 18:35:40,469 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 18:35:40,470 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-13 18:35:40,470 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-13 18:35:40,470 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-13 18:35:40,511 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-10-13 18:35:40,683 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-10-13 18:35:40,688 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-13 18:35:40,689 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 18:35:40,691 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 06:35:40 BasicIcfg [2021-10-13 18:35:40,691 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 18:35:40,692 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 18:35:40,692 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 18:35:40,692 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 18:35:40,693 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:35:25" (3/4) ... [2021-10-13 18:35:40,696 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-13 18:35:40,703 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2021-10-13 18:35:40,704 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2021-10-13 18:35:40,704 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2021-10-13 18:35:40,710 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 22 nodes and edges [2021-10-13 18:35:40,710 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-13 18:35:40,711 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 18:35:40,711 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 18:35:40,759 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-10-13 18:35:40,759 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 18:35:40,761 INFO L168 Benchmark]: Toolchain (without parser) took 16206.97 ms. Allocated memory was 54.5 MB in the beginning and 119.5 MB in the end (delta: 65.0 MB). Free memory was 30.5 MB in the beginning and 64.8 MB in the end (delta: -34.2 MB). Peak memory consumption was 33.8 MB. Max. memory is 16.1 GB. [2021-10-13 18:35:40,761 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 44.0 MB. Free memory was 21.2 MB in the beginning and 21.1 MB in the end (delta: 31.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 18:35:40,762 INFO L168 Benchmark]: CACSL2BoogieTranslator took 289.47 ms. Allocated memory is still 54.5 MB. Free memory was 30.3 MB in the beginning and 32.3 MB in the end (delta: -2.0 MB). Peak memory consumption was 7.7 MB. Max. memory is 16.1 GB. [2021-10-13 18:35:40,762 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.42 ms. Allocated memory is still 54.5 MB. Free memory was 32.3 MB in the beginning and 30.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 18:35:40,763 INFO L168 Benchmark]: Boogie Preprocessor took 38.64 ms. Allocated memory is still 54.5 MB. Free memory was 30.6 MB in the beginning and 29.0 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 18:35:40,763 INFO L168 Benchmark]: RCFGBuilder took 659.56 ms. Allocated memory is still 54.5 MB. Free memory was 29.0 MB in the beginning and 27.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 16.1 GB. [2021-10-13 18:35:40,764 INFO L168 Benchmark]: TraceAbstraction took 15087.09 ms. Allocated memory was 54.5 MB in the beginning and 119.5 MB in the end (delta: 65.0 MB). Free memory was 26.6 MB in the beginning and 68.8 MB in the end (delta: -42.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 16.1 GB. [2021-10-13 18:35:40,764 INFO L168 Benchmark]: Witness Printer took 67.43 ms. Allocated memory is still 119.5 MB. Free memory was 68.8 MB in the beginning and 64.8 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-13 18:35:40,766 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 44.0 MB. Free memory was 21.2 MB in the beginning and 21.1 MB in the end (delta: 31.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 289.47 ms. Allocated memory is still 54.5 MB. Free memory was 30.3 MB in the beginning and 32.3 MB in the end (delta: -2.0 MB). Peak memory consumption was 7.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 52.42 ms. Allocated memory is still 54.5 MB. Free memory was 32.3 MB in the beginning and 30.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 38.64 ms. Allocated memory is still 54.5 MB. Free memory was 30.6 MB in the beginning and 29.0 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 659.56 ms. Allocated memory is still 54.5 MB. Free memory was 29.0 MB in the beginning and 27.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 15087.09 ms. Allocated memory was 54.5 MB in the beginning and 119.5 MB in the end (delta: 65.0 MB). Free memory was 26.6 MB in the beginning and 68.8 MB in the end (delta: -42.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 16.1 GB. * Witness Printer took 67.43 ms. Allocated memory is still 119.5 MB. Free memory was 68.8 MB in the beginning and 64.8 MB in the end (delta: 4.0 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: 6932.0ms, 165 PlacesBefore, 38 PlacesAfterwards, 171 TransitionsBefore, 34 TransitionsAfterwards, 1936 CoEnabledTransitionPairs, 7 FixpointIterations, 96 TrivialSequentialCompositions, 33 ConcurrentSequentialCompositions, 18 TrivialYvCompositions, 6 ConcurrentYvCompositions, 10 ChoiceCompositions, 163 TotalNumberOfCompositions, 2894 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2356, positive: 2270, positive conditional: 0, positive unconditional: 2270, negative: 86, negative conditional: 0, negative unconditional: 86, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1316, positive: 1289, positive conditional: 0, positive unconditional: 1289, negative: 27, negative conditional: 0, negative unconditional: 27, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1316, positive: 1289, positive conditional: 0, positive unconditional: 1289, negative: 27, negative conditional: 0, negative unconditional: 27, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 27, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 27, negative conditional: 0, negative unconditional: 27, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 62, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 62, negative conditional: 0, negative unconditional: 62, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 2356, positive: 981, positive conditional: 0, positive unconditional: 981, negative: 59, negative conditional: 0, negative unconditional: 59, unknown: 1316, unknown conditional: 0, unknown unconditional: 1316] , Statistics on independence cache: Total cache size (in pairs): 129, Positive cache size: 120, Positive conditional cache size: 0, Positive unconditional cache size: 120, Negative cache size: 9, Negative conditional cache size: 0, Negative unconditional cache size: 9 - 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: 94]: 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, 194 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 14789.7ms, OverallIterations: 12, TraceHistogramMax: 2, EmptinessCheckTime: 74.5ms, AutomataDifference: 1784.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 7034.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 466 SDtfs, 989 SDslu, 896 SDs, 0 SdLazy, 872 SolverSat, 120 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 747.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 336 GetRequests, 214 SyntacticMatches, 4 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 829.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=622occurred in iteration=5, InterpolantAutomatonStates: 87, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 344.7ms AutomataMinimizationTime, 12 MinimizatonAttempts, 1342 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 146.2ms SsaConstructionTime, 799.7ms SatisfiabilityAnalysisTime, 2074.2ms InterpolantComputationTime, 548 NumberOfCodeBlocks, 529 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 528 ConstructedInterpolants, 0 QuantifiedInterpolants, 1838 SizeOfPredicates, 25 NumberOfNonLiveVariables, 1439 ConjunctsInSsa, 47 ConjunctsInUnsatCore, 20 InterpolantComputations, 6 PerfectInterpolantSequences, 86/110 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! [2021-10-13 18:35:40,817 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...