./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-regression/test22-2.c --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_71f0d349-5add-40ab-8bdc-9d09d06406b8/bin/uautomizer-WNIpwEf4Nt/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71f0d349-5add-40ab-8bdc-9d09d06406b8/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_71f0d349-5add-40ab-8bdc-9d09d06406b8/bin/uautomizer-WNIpwEf4Nt/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71f0d349-5add-40ab-8bdc-9d09d06406b8/bin/uautomizer-WNIpwEf4Nt/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-regression/test22-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71f0d349-5add-40ab-8bdc-9d09d06406b8/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_71f0d349-5add-40ab-8bdc-9d09d06406b8/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 a615535fdf39447351d30c32f7932e942abe07a9 ........................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 01:22:24,935 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 01:22:24,938 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 01:22:24,998 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 01:22:24,999 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 01:22:25,000 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 01:22:25,003 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 01:22:25,006 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 01:22:25,008 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 01:22:25,010 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 01:22:25,012 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 01:22:25,013 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 01:22:25,014 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 01:22:25,016 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 01:22:25,018 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 01:22:25,020 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 01:22:25,022 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 01:22:25,023 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 01:22:25,025 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 01:22:25,028 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 01:22:25,031 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 01:22:25,033 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 01:22:25,035 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 01:22:25,036 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 01:22:25,041 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 01:22:25,042 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 01:22:25,042 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 01:22:25,044 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 01:22:25,045 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 01:22:25,046 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 01:22:25,047 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 01:22:25,048 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 01:22:25,049 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 01:22:25,051 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 01:22:25,052 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 01:22:25,053 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 01:22:25,054 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 01:22:25,054 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 01:22:25,055 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 01:22:25,056 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 01:22:25,058 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 01:22:25,060 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71f0d349-5add-40ab-8bdc-9d09d06406b8/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-13 01:22:25,114 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 01:22:25,114 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 01:22:25,115 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 01:22:25,116 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 01:22:25,124 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 01:22:25,126 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 01:22:25,126 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 01:22:25,126 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 01:22:25,126 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 01:22:25,127 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 01:22:25,128 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 01:22:25,128 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 01:22:25,129 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 01:22:25,129 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 01:22:25,129 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 01:22:25,129 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 01:22:25,130 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 01:22:25,130 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 01:22:25,130 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 01:22:25,130 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 01:22:25,131 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 01:22:25,131 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 01:22:25,131 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 01:22:25,132 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 01:22:25,132 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 01:22:25,132 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 01:22:25,132 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-13 01:22:25,133 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 01:22:25,133 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 01:22:25,135 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 01:22:25,135 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_71f0d349-5add-40ab-8bdc-9d09d06406b8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71f0d349-5add-40ab-8bdc-9d09d06406b8/bin/uautomizer-WNIpwEf4Nt Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a615535fdf39447351d30c32f7932e942abe07a9 [2021-10-13 01:22:25,561 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 01:22:25,588 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 01:22:25,591 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 01:22:25,593 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 01:22:25,594 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 01:22:25,595 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71f0d349-5add-40ab-8bdc-9d09d06406b8/bin/uautomizer-WNIpwEf4Nt/../../sv-benchmarks/c/ldv-regression/test22-2.c [2021-10-13 01:22:25,695 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71f0d349-5add-40ab-8bdc-9d09d06406b8/bin/uautomizer-WNIpwEf4Nt/data/2f3d9e31c/012c49c426ea4b44b3bc81cb3c2ba5de/FLAGa1c70580b [2021-10-13 01:22:26,353 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 01:22:26,354 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71f0d349-5add-40ab-8bdc-9d09d06406b8/sv-benchmarks/c/ldv-regression/test22-2.c [2021-10-13 01:22:26,369 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71f0d349-5add-40ab-8bdc-9d09d06406b8/bin/uautomizer-WNIpwEf4Nt/data/2f3d9e31c/012c49c426ea4b44b3bc81cb3c2ba5de/FLAGa1c70580b [2021-10-13 01:22:26,691 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71f0d349-5add-40ab-8bdc-9d09d06406b8/bin/uautomizer-WNIpwEf4Nt/data/2f3d9e31c/012c49c426ea4b44b3bc81cb3c2ba5de [2021-10-13 01:22:26,695 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 01:22:26,696 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 01:22:26,701 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 01:22:26,701 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 01:22:26,706 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 01:22:26,707 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:22:26" (1/1) ... [2021-10-13 01:22:26,708 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@599c127 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:22:26, skipping insertion in model container [2021-10-13 01:22:26,709 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:22:26" (1/1) ... [2021-10-13 01:22:26,718 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 01:22:26,736 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 01:22:26,957 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_71f0d349-5add-40ab-8bdc-9d09d06406b8/sv-benchmarks/c/ldv-regression/test22-2.c[1029,1042] [2021-10-13 01:22:26,961 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 01:22:26,976 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 01:22:27,024 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_71f0d349-5add-40ab-8bdc-9d09d06406b8/sv-benchmarks/c/ldv-regression/test22-2.c[1029,1042] [2021-10-13 01:22:27,026 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 01:22:27,053 INFO L208 MainTranslator]: Completed translation [2021-10-13 01:22:27,054 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:22:27 WrapperNode [2021-10-13 01:22:27,054 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 01:22:27,056 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 01:22:27,056 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 01:22:27,056 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 01:22:27,064 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:22:27" (1/1) ... [2021-10-13 01:22:27,074 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:22:27" (1/1) ... [2021-10-13 01:22:27,102 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 01:22:27,103 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 01:22:27,104 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 01:22:27,104 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 01:22:27,114 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:22:27" (1/1) ... [2021-10-13 01:22:27,115 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:22:27" (1/1) ... [2021-10-13 01:22:27,118 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:22:27" (1/1) ... [2021-10-13 01:22:27,119 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:22:27" (1/1) ... [2021-10-13 01:22:27,127 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:22:27" (1/1) ... [2021-10-13 01:22:27,132 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:22:27" (1/1) ... [2021-10-13 01:22:27,133 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:22:27" (1/1) ... [2021-10-13 01:22:27,137 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 01:22:27,138 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 01:22:27,138 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 01:22:27,138 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 01:22:27,139 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:22:27" (1/1) ... [2021-10-13 01:22:27,149 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 01:22:27,164 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71f0d349-5add-40ab-8bdc-9d09d06406b8/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:22:27,180 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71f0d349-5add-40ab-8bdc-9d09d06406b8/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 01:22:27,211 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71f0d349-5add-40ab-8bdc-9d09d06406b8/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 01:22:27,245 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 01:22:27,247 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 01:22:27,248 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-13 01:22:27,248 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 01:22:27,248 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 01:22:27,248 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-13 01:22:27,663 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 01:22:27,664 INFO L299 CfgBuilder]: Removed 15 assume(true) statements. [2021-10-13 01:22:27,666 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:22:27 BoogieIcfgContainer [2021-10-13 01:22:27,666 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 01:22:27,668 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 01:22:27,684 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 01:22:27,689 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 01:22:27,689 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 01:22:26" (1/3) ... [2021-10-13 01:22:27,690 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f67f25a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:22:27, skipping insertion in model container [2021-10-13 01:22:27,690 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:22:27" (2/3) ... [2021-10-13 01:22:27,691 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f67f25a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:22:27, skipping insertion in model container [2021-10-13 01:22:27,691 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:22:27" (3/3) ... [2021-10-13 01:22:27,693 INFO L111 eAbstractionObserver]: Analyzing ICFG test22-2.c [2021-10-13 01:22:27,699 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 01:22:27,699 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 01:22:27,820 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 01:22:27,834 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 01:22:27,835 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-13 01:22:27,857 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 23 states have (on average 1.391304347826087) internal successors, (32), 24 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 01:22:27,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-13 01:22:27,870 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:22:27,871 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:22:27,871 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 01:22:27,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:22:27,892 INFO L82 PathProgramCache]: Analyzing trace with hash 164664103, now seen corresponding path program 1 times [2021-10-13 01:22:27,904 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:22:27,905 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246060610] [2021-10-13 01:22:27,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:22:27,908 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:22:28,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:22:28,260 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 01:22:28,261 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:22:28,262 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246060610] [2021-10-13 01:22:28,263 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246060610] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 01:22:28,263 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:22:28,263 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 01:22:28,275 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492151128] [2021-10-13 01:22:28,282 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-13 01:22:28,282 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:22:28,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-13 01:22:28,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 01:22:28,311 INFO L87 Difference]: Start difference. First operand has 25 states, 23 states have (on average 1.391304347826087) internal successors, (32), 24 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) Second operand has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 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 01:22:28,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:22:28,337 INFO L93 Difference]: Finished difference Result 34 states and 41 transitions. [2021-10-13 01:22:28,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-13 01:22:28,340 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 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 19 [2021-10-13 01:22:28,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:22:28,350 INFO L225 Difference]: With dead ends: 34 [2021-10-13 01:22:28,350 INFO L226 Difference]: Without dead ends: 21 [2021-10-13 01:22:28,354 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 01:22:28,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-10-13 01:22:28,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2021-10-13 01:22:28,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.25) internal successors, (25), 20 states have internal predecessors, (25), 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 01:22:28,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2021-10-13 01:22:28,403 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 19 [2021-10-13 01:22:28,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:22:28,406 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2021-10-13 01:22:28,407 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 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 01:22:28,407 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2021-10-13 01:22:28,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-13 01:22:28,409 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:22:28,409 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] [2021-10-13 01:22:28,410 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 01:22:28,410 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 01:22:28,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:22:28,418 INFO L82 PathProgramCache]: Analyzing trace with hash 603612068, now seen corresponding path program 1 times [2021-10-13 01:22:28,418 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:22:28,419 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436156877] [2021-10-13 01:22:28,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:22:28,419 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:22:28,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:22:28,836 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 01:22:28,836 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:22:28,836 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436156877] [2021-10-13 01:22:28,837 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436156877] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 01:22:28,837 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:22:28,837 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-13 01:22:28,838 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782691184] [2021-10-13 01:22:28,841 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 01:22:28,842 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:22:28,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 01:22:28,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-10-13 01:22:28,847 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 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 01:22:29,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:22:29,359 INFO L93 Difference]: Finished difference Result 71 states and 80 transitions. [2021-10-13 01:22:29,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-13 01:22:29,361 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 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 20 [2021-10-13 01:22:29,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:22:29,365 INFO L225 Difference]: With dead ends: 71 [2021-10-13 01:22:29,365 INFO L226 Difference]: Without dead ends: 66 [2021-10-13 01:22:29,369 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 365.7ms TimeCoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2021-10-13 01:22:29,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-10-13 01:22:29,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 33. [2021-10-13 01:22:29,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.25) internal successors, (40), 32 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:22:29,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 40 transitions. [2021-10-13 01:22:29,389 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 40 transitions. Word has length 20 [2021-10-13 01:22:29,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:22:29,391 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 40 transitions. [2021-10-13 01:22:29,392 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 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 01:22:29,392 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 40 transitions. [2021-10-13 01:22:29,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-13 01:22:29,395 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:22:29,396 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] [2021-10-13 01:22:29,396 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-13 01:22:29,398 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 01:22:29,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:22:29,412 INFO L82 PathProgramCache]: Analyzing trace with hash 1304676646, now seen corresponding path program 1 times [2021-10-13 01:22:29,412 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:22:29,413 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716718658] [2021-10-13 01:22:29,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:22:29,413 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:22:29,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:22:29,496 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 01:22:29,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:22:29,651 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 01:22:29,652 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-13 01:22:29,654 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 01:22:29,656 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-13 01:22:29,664 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 01:22:29,721 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 01:22:29 BoogieIcfgContainer [2021-10-13 01:22:29,722 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 01:22:29,722 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 01:22:29,723 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 01:22:29,723 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 01:22:29,723 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:22:27" (3/4) ... [2021-10-13 01:22:29,726 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-13 01:22:29,814 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71f0d349-5add-40ab-8bdc-9d09d06406b8/bin/uautomizer-WNIpwEf4Nt/witness.graphml [2021-10-13 01:22:29,814 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 01:22:29,816 INFO L168 Benchmark]: Toolchain (without parser) took 3118.85 ms. Allocated memory is still 130.0 MB. Free memory was 95.6 MB in the beginning and 97.1 MB in the end (delta: -1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 01:22:29,817 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 130.0 MB. Free memory was 104.4 MB in the beginning and 104.4 MB in the end (delta: 31.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 01:22:29,817 INFO L168 Benchmark]: CACSL2BoogieTranslator took 353.90 ms. Allocated memory is still 130.0 MB. Free memory was 95.3 MB in the beginning and 105.0 MB in the end (delta: -9.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 01:22:29,818 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.10 ms. Allocated memory is still 130.0 MB. Free memory was 104.4 MB in the beginning and 103.0 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 01:22:29,819 INFO L168 Benchmark]: Boogie Preprocessor took 33.51 ms. Allocated memory is still 130.0 MB. Free memory was 103.0 MB in the beginning and 101.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 01:22:29,819 INFO L168 Benchmark]: RCFGBuilder took 528.49 ms. Allocated memory is still 130.0 MB. Free memory was 101.6 MB in the beginning and 89.7 MB in the end (delta: 11.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-13 01:22:29,820 INFO L168 Benchmark]: TraceAbstraction took 2053.75 ms. Allocated memory is still 130.0 MB. Free memory was 89.0 MB in the beginning and 100.0 MB in the end (delta: -11.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 01:22:29,821 INFO L168 Benchmark]: Witness Printer took 91.92 ms. Allocated memory is still 130.0 MB. Free memory was 100.0 MB in the beginning and 97.1 MB in the end (delta: 3.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-13 01:22:29,824 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 130.0 MB. Free memory was 104.4 MB in the beginning and 104.4 MB in the end (delta: 31.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 353.90 ms. Allocated memory is still 130.0 MB. Free memory was 95.3 MB in the beginning and 105.0 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 47.10 ms. Allocated memory is still 130.0 MB. Free memory was 104.4 MB in the beginning and 103.0 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 33.51 ms. Allocated memory is still 130.0 MB. Free memory was 103.0 MB in the beginning and 101.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 528.49 ms. Allocated memory is still 130.0 MB. Free memory was 101.6 MB in the beginning and 89.7 MB in the end (delta: 11.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2053.75 ms. Allocated memory is still 130.0 MB. Free memory was 89.0 MB in the beginning and 100.0 MB in the end (delta: -11.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 91.92 ms. Allocated memory is still 130.0 MB. Free memory was 100.0 MB in the beginning and 97.1 MB in the end (delta: 3.0 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: 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 - CounterExampleResult [Line: 50]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L11] struct dummy d1, d2; VAL [d1={6:0}, d2={7:0}] [L15] d1.a = __VERIFIER_nondet_int() [L16] d1.b = __VERIFIER_nondet_int() [L18] d2.a = __VERIFIER_nondet_int() [L19] d2.b = __VERIFIER_nondet_int() [L24] EXPR __VERIFIER_nondet_bool() ? &d1 : &d2 VAL [d1={6:0}, d2={7:0}] [L24] return (__VERIFIER_nondet_bool() ? &d1 : &d2); [L35] struct dummy *pd1 = get_dummy(), *pd2 = get_dummy(), *pd3 = get_dummy(); [L24] EXPR __VERIFIER_nondet_bool() ? &d1 : &d2 VAL [d1={6:0}, d2={7:0}] [L24] return (__VERIFIER_nondet_bool() ? &d1 : &d2); [L35] struct dummy *pd1 = get_dummy(), *pd2 = get_dummy(), *pd3 = get_dummy(); [L24] EXPR __VERIFIER_nondet_bool() ? &d1 : &d2 VAL [d1={6:0}, d2={7:0}] [L24] return (__VERIFIER_nondet_bool() ? &d1 : &d2); [L35] struct dummy *pd1 = get_dummy(), *pd2 = get_dummy(), *pd3 = get_dummy(); [L36] int i = __VERIFIER_nondet_int(); [L37] pd1 != 0 && pd1 == pd2 && (*pd2).a > 0 [L37] EXPR (*pd2).a [L37] pd1 != 0 && pd1 == pd2 && (*pd2).a > 0 VAL [d1={6:0}, d2={7:0}] [L37] COND TRUE pd1 != 0 && pd1 == pd2 && (*pd2).a > 0 [L38] int *pa = &pd1->a; [L39] EXPR pd3->a [L39] i = pd3->a - 10 [L40] EXPR \read(*pa) VAL [d1={6:0}, d2={7:0}] [L40] COND FALSE !(i < *pa) [L29] EXPR s1->a [L29] return s1->a == i; [L43] COND TRUE !check(pd2, i) [L50] reach_error() VAL [d1={6:0}, d2={7:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1844.2ms, OverallIterations: 3, TraceHistogramMax: 1, EmptinessCheckTime: 21.6ms, AutomataDifference: 594.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 16.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 54 SDtfs, 59 SDslu, 139 SDs, 0 SdLazy, 138 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 161.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 365.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=2, InterpolantAutomatonStates: 12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 48.0ms AutomataMinimizationTime, 2 MinimizatonAttempts, 33 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 40.1ms SsaConstructionTime, 241.1ms SatisfiabilityAnalysisTime, 467.1ms InterpolantComputationTime, 59 NumberOfCodeBlocks, 59 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 37 ConstructedInterpolants, 0 QuantifiedInterpolants, 109 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-10-13 01:22:29,866 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71f0d349-5add-40ab-8bdc-9d09d06406b8/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...