./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-zilu/benchmark34_conjunctive.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82da5675-dd2c-4cd8-8bf5-f0707755fa44/bin/uautomizer-WNIpwEf4Nt/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82da5675-dd2c-4cd8-8bf5-f0707755fa44/bin/uautomizer-WNIpwEf4Nt/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82da5675-dd2c-4cd8-8bf5-f0707755fa44/bin/uautomizer-WNIpwEf4Nt/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82da5675-dd2c-4cd8-8bf5-f0707755fa44/bin/uautomizer-WNIpwEf4Nt/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-zilu/benchmark34_conjunctive.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82da5675-dd2c-4cd8-8bf5-f0707755fa44/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82da5675-dd2c-4cd8-8bf5-f0707755fa44/bin/uautomizer-WNIpwEf4Nt --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 58313a706dc1d8f505ffe0e88ce66e9b5e9ea53a ...................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 01:14:32,933 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 01:14:32,935 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 01:14:32,971 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 01:14:32,971 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 01:14:32,973 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 01:14:32,979 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 01:14:32,982 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 01:14:32,984 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 01:14:32,985 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 01:14:32,987 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 01:14:32,988 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 01:14:32,989 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 01:14:32,990 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 01:14:32,998 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 01:14:33,005 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 01:14:33,007 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 01:14:33,012 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 01:14:33,017 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 01:14:33,024 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 01:14:33,028 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 01:14:33,030 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 01:14:33,031 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 01:14:33,032 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 01:14:33,036 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 01:14:33,036 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 01:14:33,037 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 01:14:33,038 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 01:14:33,038 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 01:14:33,048 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 01:14:33,048 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 01:14:33,049 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 01:14:33,050 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 01:14:33,051 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 01:14:33,052 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 01:14:33,052 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 01:14:33,053 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 01:14:33,053 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 01:14:33,054 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 01:14:33,055 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 01:14:33,056 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 01:14:33,058 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82da5675-dd2c-4cd8-8bf5-f0707755fa44/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-13 01:14:33,110 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 01:14:33,111 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 01:14:33,111 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 01:14:33,111 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 01:14:33,112 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 01:14:33,113 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 01:14:33,113 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 01:14:33,113 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 01:14:33,113 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 01:14:33,113 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 01:14:33,114 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 01:14:33,114 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 01:14:33,114 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 01:14:33,114 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 01:14:33,114 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 01:14:33,115 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 01:14:33,119 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 01:14:33,119 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 01:14:33,120 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 01:14:33,121 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 01:14:33,121 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 01:14:33,126 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 01:14:33,127 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 01:14:33,127 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 01:14:33,128 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 01:14:33,128 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 01:14:33,128 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-13 01:14:33,128 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 01:14:33,129 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 01:14:33,129 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 01:14:33,129 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82da5675-dd2c-4cd8-8bf5-f0707755fa44/bin/uautomizer-WNIpwEf4Nt/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82da5675-dd2c-4cd8-8bf5-f0707755fa44/bin/uautomizer-WNIpwEf4Nt Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 58313a706dc1d8f505ffe0e88ce66e9b5e9ea53a [2021-10-13 01:14:33,382 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 01:14:33,403 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 01:14:33,405 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 01:14:33,407 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 01:14:33,408 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 01:14:33,409 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82da5675-dd2c-4cd8-8bf5-f0707755fa44/bin/uautomizer-WNIpwEf4Nt/../../sv-benchmarks/c/loop-zilu/benchmark34_conjunctive.i [2021-10-13 01:14:33,484 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82da5675-dd2c-4cd8-8bf5-f0707755fa44/bin/uautomizer-WNIpwEf4Nt/data/cff144b42/157db86bb1544f2ea919d160d5ea0525/FLAG05c89cd25 [2021-10-13 01:14:33,934 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 01:14:33,935 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82da5675-dd2c-4cd8-8bf5-f0707755fa44/sv-benchmarks/c/loop-zilu/benchmark34_conjunctive.i [2021-10-13 01:14:33,940 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82da5675-dd2c-4cd8-8bf5-f0707755fa44/bin/uautomizer-WNIpwEf4Nt/data/cff144b42/157db86bb1544f2ea919d160d5ea0525/FLAG05c89cd25 [2021-10-13 01:14:34,320 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82da5675-dd2c-4cd8-8bf5-f0707755fa44/bin/uautomizer-WNIpwEf4Nt/data/cff144b42/157db86bb1544f2ea919d160d5ea0525 [2021-10-13 01:14:34,323 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 01:14:34,324 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 01:14:34,326 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 01:14:34,326 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 01:14:34,339 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 01:14:34,340 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:14:34" (1/1) ... [2021-10-13 01:14:34,341 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9afff90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:14:34, skipping insertion in model container [2021-10-13 01:14:34,341 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:14:34" (1/1) ... [2021-10-13 01:14:34,350 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 01:14:34,367 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 01:14:34,534 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82da5675-dd2c-4cd8-8bf5-f0707755fa44/sv-benchmarks/c/loop-zilu/benchmark34_conjunctive.i[873,886] [2021-10-13 01:14:34,552 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 01:14:34,562 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 01:14:34,582 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82da5675-dd2c-4cd8-8bf5-f0707755fa44/sv-benchmarks/c/loop-zilu/benchmark34_conjunctive.i[873,886] [2021-10-13 01:14:34,587 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 01:14:34,604 INFO L208 MainTranslator]: Completed translation [2021-10-13 01:14:34,605 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:14:34 WrapperNode [2021-10-13 01:14:34,606 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 01:14:34,609 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 01:14:34,610 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 01:14:34,610 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 01:14:34,618 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:14:34" (1/1) ... [2021-10-13 01:14:34,626 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:14:34" (1/1) ... [2021-10-13 01:14:34,645 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 01:14:34,646 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 01:14:34,646 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 01:14:34,646 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 01:14:34,654 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:14:34" (1/1) ... [2021-10-13 01:14:34,655 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:14:34" (1/1) ... [2021-10-13 01:14:34,668 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:14:34" (1/1) ... [2021-10-13 01:14:34,669 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:14:34" (1/1) ... [2021-10-13 01:14:34,672 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:14:34" (1/1) ... [2021-10-13 01:14:34,677 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:14:34" (1/1) ... [2021-10-13 01:14:34,685 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:14:34" (1/1) ... [2021-10-13 01:14:34,686 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 01:14:34,688 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 01:14:34,689 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 01:14:34,689 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 01:14:34,690 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:14:34" (1/1) ... [2021-10-13 01:14:34,698 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 01:14:34,710 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82da5675-dd2c-4cd8-8bf5-f0707755fa44/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:14:34,729 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82da5675-dd2c-4cd8-8bf5-f0707755fa44/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 01:14:34,756 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82da5675-dd2c-4cd8-8bf5-f0707755fa44/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 01:14:34,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 01:14:34,780 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 01:14:34,781 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 01:14:34,781 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 01:14:34,983 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 01:14:34,983 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-13 01:14:34,985 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:14:34 BoogieIcfgContainer [2021-10-13 01:14:34,986 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 01:14:34,988 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 01:14:34,988 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 01:14:34,991 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 01:14:34,992 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 01:14:34" (1/3) ... [2021-10-13 01:14:34,993 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e912106 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:14:34, skipping insertion in model container [2021-10-13 01:14:34,993 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:14:34" (2/3) ... [2021-10-13 01:14:34,993 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e912106 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:14:34, skipping insertion in model container [2021-10-13 01:14:34,994 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:14:34" (3/3) ... [2021-10-13 01:14:34,995 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark34_conjunctive.i [2021-10-13 01:14:35,001 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 01:14:35,001 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 01:14:35,051 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 01:14:35,058 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 01:14:35,059 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-13 01:14:35,073 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 10 states have (on average 1.5) internal successors, (15), 11 states have internal predecessors, (15), 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 01:14:35,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-13 01:14:35,078 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:14:35,078 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:14:35,079 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 01:14:35,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:14:35,085 INFO L82 PathProgramCache]: Analyzing trace with hash 1807089479, now seen corresponding path program 1 times [2021-10-13 01:14:35,093 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:14:35,094 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820667544] [2021-10-13 01:14:35,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:14:35,095 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:14:35,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:14:35,243 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 01:14:35,243 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:14:35,244 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820667544] [2021-10-13 01:14:35,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820667544] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 01:14:35,245 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:14:35,245 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 01:14:35,247 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600200763] [2021-10-13 01:14:35,253 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-13 01:14:35,253 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:14:35,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-13 01:14:35,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 01:14:35,271 INFO L87 Difference]: Start difference. First operand has 12 states, 10 states have (on average 1.5) internal successors, (15), 11 states have internal predecessors, (15), 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 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 01:14:35,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:14:35,287 INFO L93 Difference]: Finished difference Result 20 states and 23 transitions. [2021-10-13 01:14:35,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-13 01:14:35,289 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 7 [2021-10-13 01:14:35,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:14:35,298 INFO L225 Difference]: With dead ends: 20 [2021-10-13 01:14:35,299 INFO L226 Difference]: Without dead ends: 8 [2021-10-13 01:14:35,320 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 01:14:35,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2021-10-13 01:14:35,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2021-10-13 01:14:35,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 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 01:14:35,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2021-10-13 01:14:35,371 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 7 [2021-10-13 01:14:35,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:14:35,372 INFO L470 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2021-10-13 01:14:35,372 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 01:14:35,373 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2021-10-13 01:14:35,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-13 01:14:35,373 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:14:35,373 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:14:35,374 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 01:14:35,374 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 01:14:35,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:14:35,375 INFO L82 PathProgramCache]: Analyzing trace with hash 1806970315, now seen corresponding path program 1 times [2021-10-13 01:14:35,376 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:14:35,376 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715681920] [2021-10-13 01:14:35,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:14:35,377 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:14:35,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:14:35,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:14:35,444 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:14:35,445 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715681920] [2021-10-13 01:14:35,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715681920] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 01:14:35,445 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:14:35,445 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 01:14:35,446 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861230439] [2021-10-13 01:14:35,447 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 01:14:35,448 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:14:35,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 01:14:35,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 01:14:35,450 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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 01:14:35,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:14:35,462 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2021-10-13 01:14:35,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 01:14:35,463 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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 7 [2021-10-13 01:14:35,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:14:35,463 INFO L225 Difference]: With dead ends: 13 [2021-10-13 01:14:35,464 INFO L226 Difference]: Without dead ends: 9 [2021-10-13 01:14:35,465 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 01:14:35,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-10-13 01:14:35,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-10-13 01:14:35,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 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 01:14:35,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2021-10-13 01:14:35,468 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2021-10-13 01:14:35,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:14:35,469 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2021-10-13 01:14:35,469 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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 01:14:35,470 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2021-10-13 01:14:35,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-13 01:14:35,470 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:14:35,471 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:14:35,471 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-13 01:14:35,471 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 01:14:35,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:14:35,472 INFO L82 PathProgramCache]: Analyzing trace with hash 183170323, now seen corresponding path program 1 times [2021-10-13 01:14:35,473 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:14:35,473 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24293097] [2021-10-13 01:14:35,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:14:35,474 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:14:35,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:14:35,670 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 01:14:35,670 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:14:35,671 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24293097] [2021-10-13 01:14:35,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24293097] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:14:35,671 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1776136727] [2021-10-13 01:14:35,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:14:35,672 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:14:35,672 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82da5675-dd2c-4cd8-8bf5-f0707755fa44/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:14:35,676 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82da5675-dd2c-4cd8-8bf5-f0707755fa44/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 01:14:35,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82da5675-dd2c-4cd8-8bf5-f0707755fa44/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-13 01:14:35,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:14:35,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 01:14:35,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:14:35,991 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 01:14:35,996 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1776136727] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:14:35,996 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 01:14:35,996 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2021-10-13 01:14:35,997 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711488957] [2021-10-13 01:14:35,997 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 01:14:35,998 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:14:35,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 01:14:35,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-13 01:14:35,999 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 8 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 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 01:14:36,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:14:36,102 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2021-10-13 01:14:36,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 01:14:36,103 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 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 8 [2021-10-13 01:14:36,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:14:36,104 INFO L225 Difference]: With dead ends: 14 [2021-10-13 01:14:36,104 INFO L226 Difference]: Without dead ends: 10 [2021-10-13 01:14:36,105 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 139.1ms TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-10-13 01:14:36,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2021-10-13 01:14:36,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2021-10-13 01:14:36,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 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 01:14:36,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2021-10-13 01:14:36,110 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2021-10-13 01:14:36,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:14:36,110 INFO L470 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2021-10-13 01:14:36,111 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 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 01:14:36,112 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2021-10-13 01:14:36,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-13 01:14:36,113 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:14:36,113 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:14:36,152 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82da5675-dd2c-4cd8-8bf5-f0707755fa44/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-13 01:14:36,339 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82da5675-dd2c-4cd8-8bf5-f0707755fa44/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:14:36,340 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 01:14:36,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:14:36,340 INFO L82 PathProgramCache]: Analyzing trace with hash 1384978123, now seen corresponding path program 2 times [2021-10-13 01:14:36,340 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:14:36,341 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020793854] [2021-10-13 01:14:36,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:14:36,341 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:14:36,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:14:36,541 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:14:36,542 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:14:36,542 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020793854] [2021-10-13 01:14:36,544 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020793854] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:14:36,545 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [706483539] [2021-10-13 01:14:36,551 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 01:14:36,552 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:14:36,552 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82da5675-dd2c-4cd8-8bf5-f0707755fa44/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:14:36,559 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82da5675-dd2c-4cd8-8bf5-f0707755fa44/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 01:14:36,582 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82da5675-dd2c-4cd8-8bf5-f0707755fa44/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-13 01:14:36,625 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 01:14:36,625 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 01:14:36,626 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 01:14:36,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:14:36,860 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:14:36,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [706483539] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:14:36,860 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 01:14:36,861 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2021-10-13 01:14:36,861 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887984742] [2021-10-13 01:14:36,862 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 01:14:36,863 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:14:36,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 01:14:36,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-10-13 01:14:36,866 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand has 10 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 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 01:14:37,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:14:37,133 INFO L93 Difference]: Finished difference Result 13 states and 14 transitions. [2021-10-13 01:14:37,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-13 01:14:37,134 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 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 9 [2021-10-13 01:14:37,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:14:37,134 INFO L225 Difference]: With dead ends: 13 [2021-10-13 01:14:37,134 INFO L226 Difference]: Without dead ends: 0 [2021-10-13 01:14:37,135 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 293.6ms TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2021-10-13 01:14:37,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-13 01:14:37,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-13 01:14:37,136 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 01:14:37,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-13 01:14:37,136 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 9 [2021-10-13 01:14:37,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:14:37,136 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 01:14:37,137 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 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 01:14:37,137 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-13 01:14:37,137 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-13 01:14:37,144 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 01:14:37,185 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82da5675-dd2c-4cd8-8bf5-f0707755fa44/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-13 01:14:37,355 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82da5675-dd2c-4cd8-8bf5-f0707755fa44/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:14:37,357 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-13 01:14:37,360 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:14:37,371 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:14:37,397 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-13 01:14:37,397 INFO L857 garLoopResultBuilder]: For program point L23(line 23) no Hoare annotation was computed. [2021-10-13 01:14:37,397 INFO L857 garLoopResultBuilder]: For program point L15(lines 15 17) no Hoare annotation was computed. [2021-10-13 01:14:37,397 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-13 01:14:37,397 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-13 01:14:37,398 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-13 01:14:37,398 INFO L860 garLoopResultBuilder]: At program point L28(lines 19 29) the Hoare annotation is: true [2021-10-13 01:14:37,398 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) no Hoare annotation was computed. [2021-10-13 01:14:37,398 INFO L853 garLoopResultBuilder]: At program point L24-2(lines 24 26) the Hoare annotation is: (let ((.cse0 (+ ULTIMATE.start_main_~k~0 ULTIMATE.start_main_~j~0))) (and (< 0 ULTIMATE.start_main_~n~0) (<= ULTIMATE.start_main_~n~0 .cse0) (<= .cse0 ULTIMATE.start_main_~n~0) (< 0 (+ ULTIMATE.start_main_~k~0 1)))) [2021-10-13 01:14:37,399 INFO L857 garLoopResultBuilder]: For program point L24-3(lines 24 26) no Hoare annotation was computed. [2021-10-13 01:14:37,399 INFO L857 garLoopResultBuilder]: For program point L16(line 16) no Hoare annotation was computed. [2021-10-13 01:14:37,399 INFO L857 garLoopResultBuilder]: For program point L14(lines 14 18) no Hoare annotation was computed. [2021-10-13 01:14:37,404 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 01:14:37,417 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 01:14:37 BoogieIcfgContainer [2021-10-13 01:14:37,417 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 01:14:37,418 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 01:14:37,418 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 01:14:37,418 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 01:14:37,419 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:14:34" (3/4) ... [2021-10-13 01:14:37,422 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-13 01:14:37,432 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-10-13 01:14:37,432 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-13 01:14:37,432 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 01:14:37,433 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 01:14:37,468 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82da5675-dd2c-4cd8-8bf5-f0707755fa44/bin/uautomizer-WNIpwEf4Nt/witness.graphml [2021-10-13 01:14:37,468 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 01:14:37,470 INFO L168 Benchmark]: Toolchain (without parser) took 3144.94 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 61.2 MB in the beginning and 59.0 MB in the end (delta: 2.2 MB). Peak memory consumption was 20.4 MB. Max. memory is 16.1 GB. [2021-10-13 01:14:37,471 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 94.4 MB. Free memory is still 46.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 01:14:37,471 INFO L168 Benchmark]: CACSL2BoogieTranslator took 281.65 ms. Allocated memory is still 94.4 MB. Free memory was 61.0 MB in the beginning and 70.7 MB in the end (delta: -9.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 01:14:37,472 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.38 ms. Allocated memory is still 94.4 MB. Free memory was 70.7 MB in the beginning and 69.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 01:14:37,473 INFO L168 Benchmark]: Boogie Preprocessor took 41.36 ms. Allocated memory is still 94.4 MB. Free memory was 69.3 MB in the beginning and 68.3 MB in the end (delta: 986.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 01:14:37,473 INFO L168 Benchmark]: RCFGBuilder took 297.73 ms. Allocated memory is still 94.4 MB. Free memory was 68.3 MB in the beginning and 59.5 MB in the end (delta: 8.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 01:14:37,474 INFO L168 Benchmark]: TraceAbstraction took 2429.76 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 59.1 MB in the beginning and 61.4 MB in the end (delta: -2.3 MB). Peak memory consumption was 17.2 MB. Max. memory is 16.1 GB. [2021-10-13 01:14:37,475 INFO L168 Benchmark]: Witness Printer took 50.76 ms. Allocated memory is still 113.2 MB. Free memory was 61.4 MB in the beginning and 59.0 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 01:14:37,478 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 94.4 MB. Free memory is still 46.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 281.65 ms. Allocated memory is still 94.4 MB. Free memory was 61.0 MB in the beginning and 70.7 MB in the end (delta: -9.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 36.38 ms. Allocated memory is still 94.4 MB. Free memory was 70.7 MB in the beginning and 69.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 41.36 ms. Allocated memory is still 94.4 MB. Free memory was 69.3 MB in the beginning and 68.3 MB in the end (delta: 986.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 297.73 ms. Allocated memory is still 94.4 MB. Free memory was 68.3 MB in the beginning and 59.5 MB in the end (delta: 8.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2429.76 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 59.1 MB in the beginning and 61.4 MB in the end (delta: -2.3 MB). Peak memory consumption was 17.2 MB. Max. memory is 16.1 GB. * Witness Printer took 50.76 ms. Allocated memory is still 113.2 MB. Free memory was 61.4 MB in the beginning and 59.0 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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: 16]: 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 CFG has 1 procedures, 12 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2354.4ms, OverallIterations: 4, TraceHistogramMax: 2, EmptinessCheckTime: 10.4ms, AutomataDifference: 461.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 40.7ms, InitialAbstractionConstructionTime: 10.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 28 SDtfs, 15 SDslu, 31 SDs, 0 SdLazy, 68 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 75.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 41 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 442.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred in iteration=0, InterpolantAutomatonStates: 21, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 43.4ms AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 6 NumberOfFragments, 20 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 12.9ms HoareSimplificationTime, 2 FomulaSimplificationsInter, 46 FormulaSimplificationTreeSizeReductionInter, 22.3ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 24.8ms SsaConstructionTime, 141.6ms SatisfiabilityAnalysisTime, 915.5ms InterpolantComputationTime, 48 NumberOfCodeBlocks, 48 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 42 ConstructedInterpolants, 0 QuantifiedInterpolants, 215 SizeOfPredicates, 8 NumberOfNonLiveVariables, 118 ConjunctsInSsa, 28 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 0/8 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 - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: ((0 < n && n <= k + j) && k + j <= n) && 0 < k + 1 - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-10-13 01:14:37,532 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82da5675-dd2c-4cd8-8bf5-f0707755fa44/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...